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Cisco IOS Software Releases 12.2 SE

Release Notes for Catalyst 3750-X, 3750-E, 3560-X, and 3560-E Switches, Cisco IOS Release 12.2(55)SE and Later

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Table of Contents

Release Notes for Catalyst 3750-X, 3750-E, 3560-X, and 3560-E Switches, Cisco IOS Release 12.2(55)SE and Later

Contents

System Requirements

Supported Hardware

Device Manager System Requirements

Hardware

Software

Cluster Compatibility

CNA Compatibility

Upgrading the Switch Software

Finding the Software Version and Feature Set

Deciding Which Files to Use

Archiving Software Images

Upgrading a Switch by Using the Device Manager or Network Assistant

Upgrading a Switch by Using the CLI

Recovering from a Software Failure

Installation Notes

New Software Features

Minimum Cisco IOS Release for Major Features

Limitations and Restrictions

Cisco IOS Limitations

Access Control List

Address Resolution Protocol

Cisco Redundant Power System 2300

Cisco Transceiver Modules and SFP Modules

Configuration

Diagnostics

EtherChannel

IEEE 802.1x Authentication

Multicasting

PoE or PoE+

QoS

RADIUS

Routing

Smart Install

SPAN and RSPAN

Stacking (only Catalyst 3750-X and Catalyst 3750-E Switch Stack)

Stack Power (Catalyst 3750-X only)

VLANs

Device Manager Limitations

Important Notes

Switch Stack Notes

Cisco IOS Notes

Device Manager Notes

Open Caveats

Resolved Caveats

Caveats Resolved in Cisco IOS Release 12.2(55)SE9

Caveats Resolved in Cisco IOS Release 12.2(55)SE8

Caveats Resolved in Cisco IOS Release 12.2(55)SE7

Caveats Resolved in Cisco IOS Release 12.2(55)SE6

Caveats Resolved in Cisco IOS Release 12.2(55)SE5

Caveats Resolved in Cisco IOS Release 12.2(55)SE4

Caveats Resolved in Cisco IOS Release 12.2(55)SE3

Caveats Resolved in Cisco IOS Release 12.2(55)SE1

Caveats Resolved in Cisco IOS Release 12.2(55)SE

Documentation Updates

Control Plane Protection

Updates to the Software Configuration Guide

Information Added to the “Configuring IEEE 802.1x Port-Based Authentication” Chapter

Information added to the “Configuring IPv6 Unicast Routing” Chapter

Updates to the Catalyst 3750-E and 3560-E Cisco Software Activation and Compatibility Document

Updates to the System Message Guide

New System Messages

Modified System Messages

Update to the Installation Notes for Catalyst 3750-X and 3560-X Switch Power Supply Modules

Installation Guidelines Change

Update to the Catalyst 3750-E and 3560-E Getting Started Guides

Catalyst 3750-E Switch Getting Started Guide

Catalyst 3560-E Switch Getting Started Guide

Update to the Command Reference

Catalyst 3750-E and 3560-E Switch Bootloader Commands

Related Documentation

Obtaining Documentation and Submitting a Service Request

Release Notes for Catalyst 3750-X, 3750-E, 3560-X, and 3560-E Switches, Cisco IOS Release 12.2(55)SE and Later

Revised March 14, 2014

Cisco IOS Release 12.2(55)SE and later runs on Catalyst 3750-X, Catalyst 3750-E, Catalyst 3650-X, and Catalyst 3560-E switches and on Cisco enhanced EtherSwitch service modules.

The Catalyst 3750-X and 3750-E switches support stacking through Cisco StackWise Plus technology. The Catalyst 3750-X also supports StackPower. The Catalyst 3560-X switches, Catalyst 3650-E switches, and the Cisco enhanced EtherSwitch service modules do not support switch stacking.

Unless otherwise noted, the term switch refers to a standalone switch and to a switch stack. Cisco enhanced EtherSwitch service modules and Catalyst 3560-E switches support the same features.

For more information, see the Deciding Which Files to Use and the “Related Documentation” section.

These release notes include important information about Cisco IOS Release 12.2(55)SE and later, and any limitations, restrictions, and caveats that apply to the releases. Verify that these release notes are correct for your switch:

You can download the switch software from this site (registered Cisco.com users with a login password):
http://www.cisco.com/cisco/web/download/index.html


Note Upgrading the software image on a Catalyst 3560-X or 3750-X switch from Cisco IOS Release 12.2(53)SE2 to Cisco IOS Release 12.2(55)SE or 12.2(55)SE1, or upgrading from Cisco IOS Release 12.2(55)SE to 12.2(55)SE1, could take up to 20 minutes.


System Requirements

Supported Hardware

 

Table 1 Catalyst 3750-X and Catalyst 3560-X Supported Hardware

Switch Model
Description
Supported by Minimum Cisco IOS Release

Catalyst 3750-X-24T-L

24 10/100/1000 Ethernet ports, StackWise Plus, 1 network module1 slot, 350 W power supply; LAN Base feature set

Cisco IOS Release 12.2(53)SE2

Catalyst 3750-X-48T-L

48 10/100/1000 Ethernet ports, StackWise Plus, one network module1 slot, 350 W power supply; LAN Base feature set

Cisco IOS Release 12.2(53)SE2

Catalyst 3750-X-24P-L

24 10/100/1000 PoE+ 1 slot, 715 W power supply; LAN Base feature set

Cisco IOS Release 12.2(53)SE2

Catalyst 3750-X-48P-L

48 10/100/1000 PoE+ 2 ports, StackWise Plus, one network module1 slot, 715 W power supply; LAN Base feature set

Cisco IOS Release 12.2(53)SE2

Catalyst 3750-X-48PF-L

48 10/100/1000 PoE+ 2 ports, StackWise Plus, 1 network module1 slot, 1100 W power supply; LAN Base feature set

Cisco IOS Release 12.2(53)SE2

Catalyst 3750-X-24T-S

24 10/100/1000 Ethernet ports, StackWise Plus, StackPower, 1 network module 1 slot, 350 W power supply; IP Base feature set3

Cisco IOS Release 12.2(53)SE2

Catalyst 3750-X-48T-S

48 10/100/1000 Ethernet ports, StackWise Plus, StackPower, 1 network module 1 slot, 350 W power supply; IP Base feature set3

Cisco IOS Release 12.2(53)SE2

Catalyst 3750-X-24P-S

24 10/100/1000 PoE+ 2 ports, StackWise Plus, StackPower, 1 network module 1 slot, 715 W power supply; IP Base feature set3

Cisco IOS Release 12.2(53)SE2

Catalyst 3750-X-48P-S

48 10/100/1000 PoE+2 ports, StackWise Plus, StackPower, 1 network module 1 slot, 715 W power supply; IP Base feature set3

Cisco IOS Release 12.2(53)SE2

Catalyst 3750-X-48PF-S

48 10/100/1000 PoE+2 ports, StackWise Plus, StackPower, 1 network module 1 slot, 1100 W power supply; IP Base feature set3

Cisco IOS Release 12.2(53)SE2

Catalyst 3560-X-24T-L

24 10/100/1000 Ethernet ports, 1 network module 1 slot, 350 W power supply; LAN Base feature set

Cisco IOS Release 12.2(53)SE2

Catalyst 3560-X-48T-L

48 10/100/1000 Ethernet ports, 1 network module1 slot, 350 W power supply; LAN Base feature set

Cisco IOS Release 12.2(53)SE2

Catalyst 3560-X-24P-L

24 10/100/1000 PoE+2 ports, 1 network module 1 slot, 715 W power supply; LAN Base feature set

Cisco IOS Release 12.2(53)SE2

Catalyst 3560-X-48P-L

48 10/100/1000 PoE+2 ports, 1 network module1 slot, 715 W power supply; LAN Base feature set

Cisco IOS Release 12.2(53)SE2

Catalyst 3560-X-48PF-L

48 10/100/1000 PoE+2 ports, 1 network module 1 slot, 1100 W power supply; LAN Base feature set

Cisco IOS Release 12.2(53)SE2

Catalyst 3560-X-24T-S

24 10/100/1000 Ethernet ports, 1 network module 1 slot, 350 W power supply; IP Base feature set3

Cisco IOS Release 12.2(53)SE2

Catalyst 3560-X-48T-S

48 10/100/1000 Ethernet ports, 1 network module 1 slot, 350 W power supply; IP Base feature set3

Cisco IOS Release 12.2(53)SE2

Catalyst 3560-X-24P-S

24 10/100/1000 PoE+2 ports, 1 network module 1 slot, 715 W power supply; IP Base feature set3

Cisco IOS Release 12.2(53)SE2

Catalyst 3560-X-48P-S

48 10/100/1000 PoE+2 ports, 1 network module 1 slot, 715 W power supply; IP Base feature set3

Cisco IOS Release 12.2(53)SE2

Catalyst 3560-X-48PF-S

48 10/100/1000 PoE+2 ports, 1 network module 1 slot, 1100 W power supply; IP Base feature set3

Cisco IOS Release 12.2(53)SE2

SFP Modules

100FX-SFP
GE SFPLX/LH
GE SFP SX

1000BASE-LX/LH
1000BASE-SX
1000BASE-ZX
1000BASE-BX10-D
1000BASE-BX10-U
1000BASE-T
100BASE-FX
CWDM4
DWDM5

Cisco IOS Release 12.2(53)SE2

SFP+ Modules

SFP-10G-SR
SFP-10G-LR
SFP-10G-LRM
SFP-H10GB CU1M
SFP-H10GB CU3M
SFP-H10GB CU5M

Cisco IOS Release 12.2(53)SE2

Support for these SFP+ modules

Only version 02 (or later) of the CX16 cables are supported:

SFP-H10GB-CU1M
SFP-H10GB-CU3M
SFP-H10GB-CU5M

Cisco IOS Release 12.2(53)SE2

SFP module patch cable7

CAB-SFP-50CM

Cisco IOS Release 12.2(53)SE2

Power supply modules

C3KX-PWR-1100WAC
C3KX-PWR-715WAC
C3KX-PWR-350WAC
C3KX-PWR-440WDC
C3KX-PSBAY-BLNK

Note For power supply module descriptions and configurations supported on switch models, see the hardware installation guide.

Cisco IOS Release 12.2(53)SE2

eXpandable power system (XPS)

Cisco XPS 2200

Cisco IOS Release 12.2(55)SE1

Catalyst 3750-X-12S-S

12 SFP module slots, StackWise Plus, StackPower, 1 network module slot, 350-W power supply; IP Base feature set1

Cisco IOS Release 12.2(55)SE5

Catalyst 3750-X-24S-S

24 SFP module slots, StackWise Plus, StackPower, 1 network module slot, 350-W power supply; IP Base feature set1

Cisco IOS Release 12.2(55)SE5

Catalyst 3750-X-12S-E

12 SFP module slots, StackWise Plus, StackPower, 1 network module slot, 350-W power supply; IP Services feature set

Cisco IOS Release 12.2(55)SE5

Catalyst 3750-X-24S-E

24 SFP module slots, StackWise Plus, StackPower, 1 network module slot, 350-W power supply; IP Services feature set

Cisco IOS Release 12.2(55)SE5

1.Available network modules: 10-Gigabit Ethernet network module; 1-Gigabit Ethernet network module; blank module

3.Option to upgrade the IP Base feature set to IP Services feature set is available when ordering the switch

4.CWDM = coarse wavelength-division multiplexer

5.DWDM = dense wavelength-division multiplexer

6.The CX1 cables are used with the OneX converters.

7.Only Catalyst 3560-X switches. The SFP module patch cable is a 0.5-meter, copper, passive cable with SFP module connectors at each end. The patch cable can be used in 1 Gigabit Ethernet SFP ports to connect two Catalyst 3560-X switches in a cascaded configuration. You can use the patch cable with the 10 G network module only on SFP ports 1 and 3 (not on SFP+ ports 2 and 4).

 

Table 2 Catalyst 3750-E and 3560-E Switches and Cisco Enhanced EtherSwitch Service Module Supported Hardware

Switch Hardware
Description
Supported by Minimum Cisco IOS Release

Cisco Catalyst 3750E-24TD

24 10/100/1000 Ethernet ports, 2 10-Gigabit Ethernet X2 module slots

Cisco IOS Release 12.2(35)SE2

Cisco Catalyst 3750E-48TD

48 10/100/1000 Ethernet ports, 2 10-Gigabit Ethernet X2 module slots

Cisco IOS Release 12.2(35)SE2

Cisco Catalyst 3750E-24PD

24 10/100/1000 PoE8 ports, 2 10-Gigabit Ethernet X2 module slots

Cisco IOS Release 12.2(35)SE2

Cisco Catalyst 3750E-48PD

48 10/100/1000 ports with 370 W of PoE, 2 10-Gigabit Ethernet X2 module slots

Cisco IOS Release 12.2(35)SE2

Cisco Catalyst 3750E-48PD
Full Power

48 10/100/1000 ports with 740 W of PoE, 2 10-Gigabit Ethernet X2 module slots

Cisco IOS Release 12.2(35)SE2

Cisco Catalyst 3560E-24TD

24 10/100/1000 Ethernet ports, 2 10-Gigabit Ethernet X2 module slots

Cisco IOS Release 12.2(35)SE2

Cisco Catalyst 3560E-48TD

48 10/100/1000 Ethernet ports, 2 10-Gigabit Ethernet X2 module slots

Cisco IOS Release 12.2(35)SE2

Cisco Catalyst 3560E-24PD

24 10/100/1000 PoE ports, 2 10-Gigabit Ethernet X2 module slots

Cisco IOS Release 12.2(35)SE2

Cisco Catalyst 3560E-48PD

48 10/100/1000 ports with 370 W of PoE, 2 10-Gigabit Ethernet X2 module slots

Cisco IOS Release 12.2(35)SE2

Cisco Catalyst 3560E-48PD
Full Power

48 10/100/1000 ports with 740 W of PoE, 2 10-Gigabit Ethernet X2 module slots

Cisco IOS Release 12.2(35)SE2

Cisco Catalyst 3560E-12D

12 10-Gigabit Ethernet X2 module slots

Cisco IOS Release 12.2(40)EX

Cisco Catalyst 3560E-12SD

12 SFP9 module slots, 2 10-Gigabit Ethernet X2 module slots

Cisco IOS Release 12.2(44)SE

Cisco X2 transceiver modules

X2-10GB-SR V02 or later
X2-10GB-LR V03 or later
X2-10GB-ER V02 or later
X2-10GB-CX4 V03 or later
X2-10GB-LX4 V03 or later

X2-10GB-LRM

10 Gigabit Ethernet X2 ZR optical modules

Cisco IOS Release 12.2(35)SE2





Cisco IOS Release 12.2(40)SE

Cisco IOS Release 12.2(50)SE

Cisco TwinGig Converter Module

Dual SFP X2 converter module to allow the switch to support SFP Gigabit Ethernet modules

Cisco IOS Release 12.2(35)SE2

SFP modules

1000BASE-LX/LH
1000BASE-SX
1000BASE-ZX
1000BASE-BX10-D
1000BASE-BX10-U
1000BASE-T
100BASE-FX
CWDM10SFP-10G-SR
SFP-10G-LR

For a complete list of supported SFPs and part numbers, see the data sheet:
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps7077/product_data_sheet0900aecd805bbe67.html

Cisco IOS Release 12.2(35)SE2






Cisco IOS Release 12.2(53)SE

DOM11 support for these SFP modules.

X2-10GB-ER, X2-10GB-SR, X2-10GB-LR, X2-10GB-LRM, X2-10GB-ZR

GLC-ZX-SM, GLC-BX-D, GLC-BX-U

SFP-GE-S, SFP-GE-L, SFP-GE-Z

All CWDM and DWDM SFP modules

Cisco IOS Release 12.2(46)SE

SFP module patch cable12

CAB-SFP-50CM

Cisco IOS Release 12.2(35)SE2

Supports OneX (CVR-X2-SFP10G) and these SFP+ modules

SFP-10G-SR=

Only version 02 or later CX113 cables support these SFP modules:

SFP-H10GB-CU1M
SFP-H10GB-CU3M
SFP-H10GB-CU5M

12.2(55)SE1

C3K-PWR-1150WAC

1150-W AC power supply module for PoE-capable switches

Supported on all software releases

C3K-PWR-750WAC

750-W AC power supply module for PoE-capable switches

Supported on all software releases

C3K-PWR-265WAC

265-W AC power supply module for nonPoE-capable switches

Supported on all software releases

C3K-PWR-265WDC

265-W DC power supply module for nonPoE-capable switches

Supported on all software releases

C3K-BLWR-60CFM

Fan module

Supported on all software releases

Redundant power system (RPS)

Cisco RPS 2300 RPS

Supported on all software releases

SM-D-ES2-48 7

48 10/100 ports, 2 SFP module slots

12.2(52)EX

SM-D-ES3-48-P 7

48 10/100 ports with PoE, 2 SFP module slots

12.2(52)EX

SM-D-ES3G-48-P 7

48 10/100/1000 with PoE, 2 SFP module slots

12.2(52)EX

SM-ES2-16-P14

15 10/100 ports with PoE, 1 10/100/1000 port with PoE

12.2(52)EX

SM-ES2-24 7

23 10/100 ports, 1 10/100/1000 port

12.2(52)EX

SM-ES2-24-P 7

Layer 2-capable, 23 10/100 ports with PoE, 1 10/100/1000 port with PoE

12.2(52)EX

SM-ES3-16-P 7

15 10/100 ports with PoE, 1 10/100/1000 port with PoE

12.2(52)EX

SM-ES3-24-P 7

23 10/100 ports with PoE, 1 10/100/100 port with PoE

12.2(52)EX

SM-ES3G-16-P 7

16 10/100/1000 ports with PoE

12.2(52)EX

SM-ES3G-24-P 7

24 10/100/1000 ports with PoE

12.2(52)EX

8.PoE = Power over Ethernet.

9.SFP = small form-factor pluggable

10.CWDM = coarse wavelength-division multiplexer

11.DOM = digital optical monitoring

12.Only Catalyst 3560-E switches. The SFP module patch cable is a 0.5-meter, copper, passive cable with SFP module connectors at each end. The patch cable can connect two Catalyst 3560-E switches in a cascaded configuration.

13.The CX1 cables are used with the OneX converter and are supported in Cisco IOS Release 12.2(53)SE and later.

14.Cisco enhanced EtherSwitch service module

Device Manager System Requirements

Hardware

 

Table 3 Minimum Hardware Requirements

Processor Speed
DRAM
Number of Colors
Resolution
Font Size

233 MHz minimum15

512 MB16

256

1024 x 768

Small

15.We recommend 1 GHz.

16.We recommend 1 GB DRAM.

Software

  • Windows 2000, XP, Vista, and Windows Server 2003.
  • Internet Explorer 5.5, 6.0, 7.0, Firefox 1.5, 2.0 or later.

The device manager verifies the browser version when starting a session, and it does not require a plug-in.

Cluster Compatibility

You cannot create and manage switch clusters through the device manager. To create and manage switch clusters, use the command-line interface (CLI) or the Network Assistant application.

When creating a switch cluster or adding a switch to a cluster, follow these guidelines:

  • When you create a switch cluster, we recommend configuring the highest-end switch in your cluster as the command switch.
  • If you are managing the cluster through Network Assistant, the switch with the latest software should be the command switch.
  • The standby command switch must be the same type as the command switch. For example, if the command switch is a Catalyst 3750-X switch, all standby command switches must be Catalyst 3750-X switches.

For additional information about clustering, see Getting Started with Cisco Network Assistant , Release Notes for Cisco Network Assistant, the Cisco enhanced EtherSwitch service module documentation, the software configuration guide, and the command reference.

CNA Compatibility

Cisco IOS 12.2(55)SE will be supported in a future release of the Cisco Network Assistant. Cisco IOS 12.2(35)SE2 and later is only compatible with Cisco Network Assistant 5.0 and later. You can download Cisco Network Assistant from this URL:
http://www.cisco.com/pcgi-bin/tablebuild.pl/NetworkAssistant

For more information about Cisco Network Assistant, see the Release Notes for Cisco Network Assistant on Cisco.com.

Upgrading the Switch Software

Finding the Software Version and Feature Set

The Cisco IOS image is stored as a bin file in a directory that is named with the Cisco IOS release. A subdirectory contains the files needed for web management. The image is stored on the system board flash device (flash:).

You can use the show version privileged EXEC command to see the software version that is running on your switch. The second line of the display shows the version.


Note Although the show version output always shows the software image running on the switch, the model name shown at the end of this display is the factory configuration and does not change if you upgrade the software license.


You can also use the dir filesystem : privileged EXEC command to see the directory names of other software images that you might have stored in flash memory.

Deciding Which Files to Use

If you have a service support contract and order a software license or if you order a switch, you receive the universal software image and a specific software license. If you do not have a service support contract, such as a SMARTnet contract, download the IP base image from Cisco.com. For Catalyst 3750-X and 3560-X switches, this image has the IP base and LAN base feature sets. For Catalyst 3750-E and 3560-E switches, this image has the IP base feature set.


Note A Catalyst 3750-X or 3560-X switch running the LAN base feature set supports only 255 VLANs.


The switches running the universal software images can use permanent and temporary software licenses. See the “Cisco IOS Software Activation Conceptual Overview” chapter in the Cisco IOS Software Activation Configuration Guide :
http://www.cisco.com/en/US/docs/ios/csa/configuration/guide/12.4T/csa_book.html

The universal software images support multiple feature sets. Use the software activation feature to deploy a software license and to enable a specific feature set.

For information about Catalyst 3750-E and 3560-E software activation, see the Cisco Software Activation and Compatibility Document on Cisco.com:
http://www.cisco.com/en/US/products/ps7077/products_installation_and_configuration_guides_list.html

Catalyst 3750-X and 3560-X switches running payload-encryption images can encrypt management and data traffic. Switches running nonpayload-encryption images can encrypt only management traffic, such as a Secure Shell (SSH) management session.

  • Management traffic is encrypted when SSH, Secure Socket Layer (SSL), Simple Network Management Protocol (SNMP), and other cryptographic-capable applications or protocols are enabled.
  • Data traffic is encrypted when MACsec is enabled.

For more information about Catalyst 3750-X and 3560-X software licenses and available images, see the Cisco IOS Software Installation Document on Cisco.com:
http://www.cisco.com/en/US/products/ps10745/products_installation_and_configuration_guides_list.html

 

Table 4 Software Images

Image
Filename
Description

Catalyst 3750-X and Catalyst 3560-X switches

IP base without payload encryption

c3750e-ipbasek9npe-tar.122-55.SE1.tar

c3560e-ipbasek9npe-tar.122-55.SE1.tar

Layer 2 and basic Layer 3 features, SSH17, SSL18, and SNMPv319, and Kerberos

LAN base image with Layer 2 features

IP base with payload encryption

c3750e-ipbasek9-tar.122-55.SE1.tar

c3560e-ipbasek9-tar.122-55.SE1.tar

Layer 2 and basic Layer 3 features, SSH, SSL, SNMPv3, Kerberos, and MACsec20

LAN base image with Layer 2 features

Universal without payload encryption

c3750e-universalk9npe-tar.122-55.SE1.tar

c3560e-universalk9npe-tar.122-55.SE1.tar

All the supported universal image features, Kerberos, SSH, SSL, and SNMPv3

LAN base, IP base, and IP services software licenses

Universal with payload encryption

c3750e-universalk9-tar.122-55.SE1.tar

c3560e-universalk9-tar.122-55.SE1.tar

All the supported universal image features, Kerberos, SSH, SSL, SNMPv3, and MACsec

LAN base, IP base, and IP services software licenses

Catalyst 3750-E and Catalyst 3560-E switches

IP base image

c3750e-ipbasek9-tar.122-55.SE1.tar

c3560e-ipbasek9-tar.122-55.SE1.tar

Layer 2 and basic Layer 3 features, SSH, SSL, SNMPv3, and Kerberos

Universal image

c3750e-universalk9-tar.122-55.SE1.tar

c3560e-universalk9-tar.122-55.SE1.tar

All the supported universal image features, Kerberos, SSH, SSL, and SNMPv3

IP base and IP services software licenses

Cisco enhanced EtherSwitch service modules

LAN base image

c2960-lanbasek9-tar.122-55.SE1.tar

Layer 2 features, SSH, SNMPv3, and Kerberos

For these service modules: SM-D-ES2-48, SM-ES2-16-P, SM-ES2-24, and SM-ES2-24-P6.

Universal image

c3560e-universalk9-tar.122-55.SE1.tar

All the supported universal image features, Kerberos, SSH, SSL, and SNMPv3

IP base and IP services software licenses

For these service modules: SM-D-ES3-48-P, SM-D-ES3G-48-P, SM-ES3-16-P, SM-ES3-24-P, SM-ES3G-16-P, and SM-ES3G-24-P.

17.SSH = Secure Shell

18.SSL = Secure Socket Layer

19.SNMPv3 = Simple Network Management Protocol Version 3

20.MACsec = MAC security standard

The upgrade procedures in these release notes describe how to perform the upgrade by using a combined tar file. This file contains the Cisco IOS image file and the files needed for the embedded device manager. You must use the combined tar file to upgrade the switch through the device manager. To upgrade the switch through the command-line interface (CLI), use the tar file and the archive download-sw privileged EXEC command.

Archiving Software Images

Before upgrading your switch software, make sure that you have archived copies of the current Cisco IOS release and the Cisco IOS release from which you are upgrading. You should keep these archived images until you have upgraded all devices in the network to the new Cisco IOS image and until you have verified that the new Cisco IOS image works properly in your network.

Cisco routinely removes old Cisco IOS versions from Cisco.com. See Product Bulletin 2863 for more information:
http://www.cisco.com/en/US/prod/collateral/iosswrel/ps8802/ps6969/ps1835/prod_bulletin0900aecd80281c0e.html

You can copy the bin software image file on the flash memory to the appropriate TFTP directory on a host by using the copy flash: tftp: privileged EXEC command.


Note Although you can copy any file on the flash memory to the TFTP server, it is time-consuming to copy all of the HTML files in the tar file. We recommend that you download the tar file from Cisco.com and archive it on an internal host in your network.


You can also configure the switch as a TFTP server to copy files from one switch to another without using an external TFTP server by using the tftp-server global configuration command. For more information about the tftp-server command, see the “Basic File Transfer Services Commands” section of the Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 :
http://www.cisco.com/en/US/docs/ios/fundamentals/command/reference/cf_t1.html

Upgrading a Switch by Using the Device Manager or Network Assistant

You can upgrade switch software by using the device manager or Network Assistant. For detailed instructions, click Help .


Note When using the device manager to upgrade your switch, do not use or close your browser session after the upgrade process begins. Wait until after the upgrade process completes.


Upgrading a Switch by Using the CLI

This procedure is for copying the combined tar file to the switch. You copy the file to the switch from a TFTP server and extract the files. You can download an image file and replace or keep the current image.

To download software, follow these steps:


Step 1 Use Table 4 to identify the file that you want to download.

Step 2 Download the software image file:

a. If you are a registered customer, go to this URL and log in:
http://www.cisco.com/cisco/web/download/index.html

b. Navigate to Switches > LAN Switches - Access

c. Navigate to your switch model.

d. Click IOS Software , then select the latest IOS release.

e. Download the image you identified in Step 1.

Step 3 Copy the image to the appropriate TFTP directory on the workstation, and make sure that the TFTP server is properly configured.

For more information, see Appendix B in the software configuration guide for this release.

Step 4 Log into the switch through the console port or a Telnet session.

Step 5 (Optional) Ensure that you have IP connectivity to the TFTP server by entering this privileged EXEC command:

Switch# ping tftp-server-address
 

For more information about assigning an IP address and default gateway to the switch, see the software configuration guide for this release.

Step 6 Download the image file from the TFTP server to the switch. If you are installing the same version of software that is currently on the switch, overwrite the current image by entering this privileged EXEC command:

Switch# archive download-sw /overwrite /reload tftp:[[//location]/directory]/image-name.tar
 

The /overwrite option overwrites the software image in flash memory with the downloaded one.

The /reload option reloads the system after downloading the image unless the configuration has been changed and not saved.

For // location , specify the IP address of the TFTP server.

For / directory / image-name .tar , specify the directory (optional) and the image to download. Directory and image names are case sensitive.

This example shows how to download an image from a TFTP server at 198.30.20.19 and to overwrite the image on the switch:

Switch# archive download-sw /overwrite tftp://198.30.20.19/c3750x-universal-tar.122-55.SE.tar
 

You can also download the image file from the TFTP server to the switch and keep the current image by replacing the /overwrite option with the /leave-old-sw option.


 

Recovering from a Software Failure

For recovery procedures, see the “Troubleshooting” chapter in the software configuration guide for this release.

Installation Notes

Use these methods to assign IP information to your switch:

  • The Express Setup program , as described in the switch getting started guide.
  • The CLI-based setup program, as described in the switch hardware installation guide.
  • The DHCP-based autoconfiguration, as described in the switch software configuration guide.
  • Manually assigning an IP address, as described in the switch software configuration guide.

New Software Features

  • Support for critical voice VLAN to so that when authentication is enabled and the access control server is not available, traffic from the host tagged with the voice VLAN is put into the configured voice VLAN for the port. (Applicable for Cisco IOS Release 12.2(55)SE5 and higher. Not supported on the Catalyst 3750-X and 3560-X LAN base feature set)

See the “Documentation Updates” section.

  • Auto-QoS enhancements that add automatic configuration classification of traffic flow from video devices, such as the Cisco Telepresence System and Cisco Surveillance Camera.
  • AutoSmartports enhancements, which add support for global macros, last-resort macros, event trigger control, access points, EtherChannels, auto-QoS with Cisco Medianet, and IP phones.
  • Support for CDP and LLDP enhancements for exchanging location information with video end points for dynamic location-based content distribution from servers.
  • Smart Install enhancements supporting client backup files, zero-touch replacement for clients with the same product-ID, automatic generation of the image_list file, configurable file repository, hostname changes, transparent connection of the director to client, USB storage for image and seed configuration, and changes in show command outputs.
  • Support for dynamic creation or attachment of an auth-default ACL on a port that has no static ACLs configured.
  • Support for VLAN assignment on a port configured for multi-auth mode. The RADIUS server assigns a VLAN to the first host to authenticate on the port, and subsequent hosts use the same VLAN. Voice VLAN assignment is supported for one IP phone.
  • Support for the Security Group Tag (SCT) Exchange Protocol (SXP) component of Cisco TrustSec, a security architecture using authentication, encryption, and access control.
  • AAA guarantee-first support for enabling or disabling system accounting as the first record.
  • An option to suppress verbose 802.1x, authentication manager, and MAC authentication bypass syslog messages.
  • Support for Embedded Event Manager (EEM) in the IP base feature set.
  • Support for QoS class-default policy placement.
  • The IP Base feature set supports OSPF for routed access to enable customers to extend Layer 3 routing capabilities to the access or wiring closet. The IP services feature set is required if you need multiple OSPFv2 and OSPFv3 instances without route restrictions.
  • MAC move to allow hosts (including the hosts connected to an IP phone) to move across ports within the same switch without any restrictions to enable mobility. With MAC move, the switch treats the reappearance of the same MAC address on another port as a completely new MAC address.

MAC replace can be configured so that when a host disconnects from a port without ending its session, the session can be ended and the authentication sequence reset when a new MAC address connects to the port.

  • Support for increasing the NVRAM buffer size for saving large configuration files.
  • ARP tracking probe enhancement to specify a source IP address for a VLAN.
  • CISCO-ENERGYWISE-MIB enhancements. See the Release Notes for Cisco EnergyWise, EnergyWise Phase 2 for information. (Only Catalyst 3750-X, 3750-E, 3560-X, and 3560-E switches)
  • Network Edge Access Topology (NEAT) controls the supplicant port during the supplicant authentication period. When you connect a supplicant switch to the authenticator switch, the authenticator port could be error-disabled when receiving Spanning Tree Protocol (STP) bridge protocol data unit (BPDU) packets and the supplicant switch is not authenticated. The NEAT feature is now enhanced to block the supplicant port during authentication, to ensure authentication completes.

Use the dot1x supplicant controlled transient global configuration command to control access to the supplicant port during authentication. Use the no form of this command to provide access to the supplicant port during the authentication period.

Minimum Cisco IOS Release for Major Features

Table 5 lists the minimum software release after the first release of required to support the major features on the switches. The first release of the Catalyst 3750-X sand 3560-X switches was Cisco IOS Release 12.2(53)SE2).

 

Table 5 Features Introduced After the First Release and the Minimum Cisco IOS Release Required

Feature
Minimum Cisco IOS Release Required
Catalyst Switch Support

Auto-QoS enhancements that add automatic configuration classification of traffic flow from video devices.

12.2(55)SE

3750-E, 3560-E
3750-X, 3560-X

AutoSmartports enhancements, which add support for global macros, last-resort macros, event trigger control, access points, EtherChannels, auto-QoS with Cisco Medianet, and IP phones.

12.2(55)SE

3750-E, 3560-E
3750-X, 3560-X

CDP and LLDP enhancements for exchanging location information with video end points.s.

12.2(55)SE

3750-E, 3560-E
3750-X, 3560-X

Smart Install enhancements including client backup files, zero-touch replacement for clients with the same product-ID, and automatic generation of the image_list file.

12.2(55)SE

3750-E, 3560-E
3750-X, 3560-X

Dynamic creation or attachment of an auth-default ACL on a port with no configured static ACLs.

12.2(55)SE

3750-E, 3560-E
3750-X, 3560-X

VLAN assignment on a port configured for multi-auth mode.

12.2(55)SE

3750-E, 3560-E
3750-X, 3560-X

EEM in IP base image.

12.2(55)SE

3750-E, 3560-E
3750-X, 3560-X

IP base support for OSPF routed access.

12.2(55)SE

3750-E, 3560-E
3750-X, 3560-X

Cisco TrustSec SXP.

12.2(55)SE
12.2(53)SE2

3750-E, 3560-E
3750-X, 3560-X

Cisco EnergyWise Phase 2 to manage power usage of EnergyWise-enabled Cisco devices and non-Cisco end points running EnergyWise agents21

12.2(53)SE1

3750-E, 3560-E

AutoSmartports enhancements (macro persistency, LLDP-based triggers, MAC address and OUI-based triggers.

12.2(52)SE

3750-E, 3560-E

EEM 3.2 Neighbor Discovery, Identity, and MAC-Address-Table.

12.2(52)SE

3750-E, 3560-E

Support for IP source guard on static hosts.

12.2(52)SE

3750-E, 3560-E

RADIUS Change of Authorization (CoA).

12.2(52)SE

3750-E, 3560-E

802.1x User Distribution to allow deployments with multiple VLANs.

12.2(52)SE

3750-E, 3560-E

Critical VLAN with multiple-host authentication.

12.2(52)SE

3750-E, 3560-E

Customizable web authentication enhancement.

12.2(52)SE

3750-E, 3560-E

Network Edge Access Topology (NEAT) to change the port host mode and to apply a standard port configuration on the authenticator switch port.

12.2(52)SE

3750-E, 3560-E

VLAN-ID based MAC authentication.

12.2(52)SE

3750-E, 3560-E

MAC move to allow hosts to move across ports within the same switch without any restrictions to enable mobility.

12.2(52)SE

3750-E, 3560-E

SNMPv3 with Triple Data Encryption Standard (3DES) and 128-bit, 192-bit, and 256-bit Advanced Encryption Standard (AES) encryption algorithms.

12.2(52)SE

3750-E, 3560-E

Hostname inclusion in the option 12 field of DHCPDISCOVER packets.

12.2(52)SE

3750-E, 3560-E

DHCP Snooping enhancement to support the circuit-id sub-option of the Option 82 DHCP field.

12.2(52)SE

3750-E, 3560-E

LLPD-MED enhancements to allow the switch to grant power to the power device (PD), based on the power policy TLV request.

12.2(52)SE

3750-E, 3560-E

VTP version 3 support.

12.2(52)SE

3750-E, 3560-E

QoS marking of CPU-generated traffic and queue CPU-generated traffic on egress ports.

12.2(52)SE

3750-E, 3560-E

NEAT with 802.1X switch supplicant, host authorization with CISP, and auto enablement

12.2(52)SE

3750-E, 3560-E

802.1x with open access.

12.2(52)SE

3750-E, 3560-E

802.1x authentication with downloadable ACLs and redirect URLs.

12.2(52)SE

3750-E, 3560-E

Flexible-authentication sequencing to configure the order of authentication methods tried by a port.

12.2(52)SE

3750-E, 3560-E

Multiple-user authentication to allow more than one host to authenticate on an 802.1x-enabled port

12.2(52)SE

3750-E, 3560-E

Supports the LLPD-MED MIB and the CISCO-ADMISSION-POLICY MIB.

12.2(52)SE

3750-E, 3560-E

Full QoS support for IPv6 traffic.

12.2(50)SE

3750-E, 3560-E

Smart Install to allow a single point of management (director) in a network.

12.2(50)SE

3750-E, 3560-E

Cisco Medianet to enable intelligent services in the network infrastructure for a wide variety of video applications.

12.2(50)SE

3750-E, 3560-E

Support for up to 32 10 Gigabit Ethernet DWDM X2 optical modules.

12.2(52)SE

3750-E, 3560-E

Wired location service.

12.2(50)SE

3750-E, 3560-E

Intermediate System-to-Intermediate System (IS-IS) routing for Connectionless Network Service (CLNS) networks

12.2(50)SE

3750-E, 3560-E

Stack troubleshooting enhancements

12.2(50)SE

3750-E

Support for the Cisco IOS Configuration Engine (previously the Cisco IOS CNS agent)

12.2(50)SE

3750-E, 3560-E

Embedded Event Manager Version 2.4

12.2(50)SE

3750-E, 3560-E

LLDP-MED network-policy profile time, length, value (TLV).

12.2(50)SE

3750-E, 3560-E

RADIUS server load balancing.

12.2(50)SE

3750-E, 3560-E

Auto Smartports Cisco-default and user-defined macros.

12.2(50)SE

3750-E, 3560-E

Support for these MIBs: SCP attribute in the CONFIG_COPY MIB, CISCO-AUTH-FRAMEWORK, CISCO-MAC-AUTH-BYPASS, LLDP

12.2(50)SE

3750-E, 3560-E

IPv6 features supported in the IP services and IP base software images: ACLs; DHCPv6 for the DCHP server, client, and relay device; EIGRPv6; HSRPv6; OSPFv3; RIP; Static routes

12.2(50)SE

3750-E, 3560-E

Generic message authentication support with the SSH Protocol and compliance with RFC 4256

12.2(50)SE

3750-E, 3560-E

Voice aware 802.1x and mac authentication bypass (MAB) security violation

12.2(46)SE

3750-E, 3560-E

Local web authentication banner

12.2(46)SE

3750-E, 3560-E

Support for the CISCO-NAC-NAD and CISCO-PAE MIBs

12.2(46)SE

3750-E, 3560-E

Digital Optical Monitoring (DOM) of connected SFP modules

12.2(46)SE

3750-E, 3560-E

The ability to exclude a port in a VLAN from the SVI line-state calculation

12.2(46)SE

3750-E, 3560-E

HSRP Version 2 (HSRPv2)

12.2(46)SE

3750-E, 3560-E

HSRP for IPv6 (requires the IP services image)

12.2(46)SE

3750-E, 3560-E

Disabling MAC address learning on a VLAN

12.2(46)SE

3750-E, 3560-E

PAgP Interaction with Virtual Switches and Dual-Active Detection

12.2(46)SE

3750-E, 3560-E

Rehosting a software license and using an embedded evaluation software license

12.2(46)SE

3750-E, 3560-E

EOT and IP SLAs EOT static route support

12.2(46)SE

3750-E, 3560-E

DHCP server port-based address allocation

12.2(46)SE

3750-E, 3560-E

DHCP for IPv6 relay, client, server address assignment and prefix delegation (IP services image)

12.2(46)SE

3750-E, 3560-E

IPv6 port-based trust with dual IPv4 and IPv6 SDM templates

12.2(46)SE

3750-E, 3560-E

IPv6 default router preference (DRP)

12.2(46)SE

3750-E, 3560-E

Embedded event manager (EEM) for device and system management
(IP services only)

12.2(46)SE

3750-E, 3560-E

DHCP-based autoconfiguration and image update

12.2(44)SE

3750-E, 3560-E

Configurable small-frame arrival threshold

12.2(44)SE

3750-E, 3560-E

Digital optical monitoring (DOM)

12.2(44)SE

3750-E, 3560-E

Source Specific Multicast (SSM) mapping

12.2(44)SE

3750-E, 3560-E

HTTP and HTTP(s) support over IPV6

12.2(44)SE

3750-E, 3560-E

SNMP configuration over IPv6 transport

12.2(44)SE

3750-E, 3560-E

IPv6 support for stateless autoconfiguration

12.2(44)SE

3750-E, 3560-E

Flex Link Multicast Fast Convergence

12.2(44)SE

3750-E, 3560-E

IEEE 802.1x readiness check

12.2(44)SE

3750-E, 3560-E

/31 bit mask support for multicast traffic

12.2(44)SE

3750-E, 3560-E

Flow-based Switch Port Analyzer (FSPAN)

12.2(44)SE

3750-E, 3560-E

Automatic quality of service (QoS) Voice over IP (VoIP) enhancement

12.2(40)SE

3750-E, 3560-E

Configuration replacement and rollback

12.2(40)SE

3750-E, 3560-E

Dynamic voice virtual LAN (VLAN) for multidomain authentication (MDA)

12.2(40)SE

3750-E, 3560-E

Internet Group Management Protocol (IGMP) Helper

12.2(40)SE

3750-E, 3560-E

IP Service Level Agreements (IP SLAs)

12.2(40)SE

3750-E, 3560-E

IP SLAs EOT

12.2(40)SE

3750-E, 3560-E

Multicast virtual routing and forwarding (VRF) Lite

12.2(40)SE

3750-E, 3560-E

SSM PIM protocol

12.2(40)SE

3750-E, 3560-E

Enhanced Interior Gateway Routing Protocol (EIGRP) IPv6

12.2(40)SE

3750-E, 3560-E

Support for VRF-aware services

12.2(40)SE

3750-E, 3560-E

Support for the Link Layer Discovery Protocol Media Extensions (LLDP-MED) location TLV

12.2(40)SE

3750-E, 3560-E

Support for the CISCO-MAC-NOTIFICATION-MIB

12.2(40)SE

3750-E, 3560-E

Support for the CISCO-POWER-ETHERNET-EXT-MIB

12.2(40)SE

3750-E, 3560-E

DHCP Snooping Statistics show and clear commands

12.2(37)SE

3750-E, 3560-E

IP phone detection enhancement

12.2(37)SE

3750-E, 3560-E

IP unicast reverse path forwarding (unicast RPF)

12.2(37)SE

3750-E, 3560-E

Link Layer Discovery Protocol (LLDP) and LLDP Media Endpoint Discovery (LLDP-MED)

12.2(37)SE

3750-E, 3560-E

PIM stub routing in the IP base image

12.2(37)SE

3750-E, 3560-E

Port security on a PVLAN host

12.2(37)SE

3750-E, 3560-E

VLAN aware port security option

12.2(37)SE

3750-E, 3560-E

Support for auto-rendezvous point (auto-RP) for IP multicast

12.2(37)SE

3750-E, 3560-E

VLAN Flex Link Load Balancing

12.2(37)SE

3750-E, 3560-E

Web Cache Communication Protocol (WCCP)

12.2(37)SE

3750-E, 3560-E

SNMP support for the Port Error Disable MIB

12.2(37)SE

3750-E, 3560-E

Support for the Time Domain Reflectometry MIB

12.2(37)SE

3750-E, 3560-E

21.Cisco enhanced EtherSwitch service modules do not support Cisco EnergyWise.

Limitations and Restrictions

You should review this section before you begin working with the switch. These are known limitations that will not be fixed, and there is not always a workaround. Some features might not work as documented, and some features could be affected by recent changes to the switch hardware or software.

Access Control List

  • The Catalyst 3750-E and Catalyst 3560-E switches have 964 TCAM entries available for ACLs in the default and routing SDM templates instead of the 1024 entries that are available on the Catalyst 3560 and Catalyst 3750 switches.

There is no workaround. (CSCse33114)

  • When a MAC access list is used to block packets from a specific source MAC address, that MAC address is entered in the switch MAC-address table.

The workaround is to block traffic from the specific MAC address by using the mac address-table static mac-addr vlan vlan-id drop global configuration command. (CSCse73823)

Address Resolution Protocol

  • The switch might place a port in an error-disabled state due to an Address Resolution Protocol (ARP) rate limit exception even when the ARP traffic on the port is not exceeding the configured limit. This could happen when the burst interval setting is 1 second, the default.

The workaround is to set the burst interval to more than 1 second. We recommend setting the burst interval to 3 seconds even if you are not experiencing this problem.(CSCse06827))

Cisco Redundant Power System 2300

  • When connecting the RPS cable between the RPS 2300 and the Catalyst 3750-E or 3560-E switch or other supported network devices, this communication error might appear:

PLATFORM_ENV-1-RPS_ACCESS: RPS is not responding

No workaround is required because the problem corrects itself. (CSCsf15170)

Cisco Transceiver Modules and SFP Modules

  • (Catalyst 3750-E or 3560-E switches) Switches with the Cisco X2-10GB-LX4 transceiver modules with a version identification number prior to V03 might intermittently fail. The workaround is to use Cisco X2-10GB-LX4 transceiver modules with a version identification number of V03 or later. (CSCsh60076)
  • Cisco GLC-GE-100FX SFP modules with a serial number between OPC0926xxxx and OPC0945xxxx might show intermittent module not valid , data, status, link-flapping, and FCS errors. The workaround is to use modules with serial numbers that are not in the specified range. (CSCsh59585)

• When switches are installed closely together and the uplink ports of adjacent switches are in use, you might have problems accessing the SFP module bale-clasp latch to remove the SFP module or the SFP cable (Ethernet or fiber). Use one of these workarounds:

Allow space between the switches when installing them.

In a switch stack, plan the SFP module and cable installation so that uplinks in adjacent stack members are not all in use.

Use long, small screwdriver to access the latch then remove the SFP module and cable. (CSCsd57938)

  • (Catalyst 3750-E or 3560-E switches) When a Cisco X2-10GB-CX4 transceiver module is in the X2 transceiver module port and you enter the show controllers ethernet-controller tengigabitethernet privileged EXEC command, the command displays some fields as unspecified. This is the expected behavior based IEEE 802.3ae. (CSCsd47344)
  • The far-end fault optional facility is not supported on the GLC-GE-100FX SFP module. The workaround is to configure aggressive UDLD. (CSCsh70244).

Configuration

  • If a half-duplex port running at 10 Mb/s receives frames with Inter-Packet Gap (IPG) that do not conform to Ethernet specifications, the switch might stop sending packets.

There is no workaround. (CSCec74610) (Catalyst 3750-X switches)

  • When an excessive number (more than 100 packets per second) of Address Resolution Protocol (ARP) packets are sent to a Network Admission Control (NAC) Layer 2 IP-configured member port, a switch might display a message similar to this:

PLATFORM_RPC-3-MSG_THROTTLED: RPC Msg Dropped by throttle mechanism: type 0, class 51, max_msg 128, total throttled 984323

-Traceback= 6625EC 5DB4C0 5DAA98 55CA80 A2F2E0 A268D8

No workaround is necessary. Under normal conditions, the switch generates this notification when snooping the next ARP packet. (CSCse47548)

• When there is a VLAN with protected ports configured in fallback bridge group, packets might not be forwarded between the protected ports.

The workaround is to not configure VLANs with protected ports as part of a fallback bridge group. (CSCsg40322)

When a switch port configuration is set at 10 Mb/s half duplex, sometimes the port does not send in one direction until the port traffic is stopped and then restarted. You can detect the condition by using the show controller ethernet-controller or the show interfaces privileged EXEC commands.

The workaround is to stop the traffic in the direction in which it is not being forwarded, and then restart it after 2 seconds. You can also use the shutdown interface configuration command followed by the no shutdown command on the interface. (CSCsh04301)

  • When line rate traffic is passing through a dynamic port, and you enter the switchport access vlan dynamic interface configuration command for a range of ports, the VLANs might not be assigned correctly. One or more VLANs with a null ID appears in the MAC address table instead.

The workaround is to enter the switchport access vlan dynamic interface configuration command separately on each port. (CSCsi26392)

  • (Catalyst 3750-X or 3750-E switches) If you enter the show tech-support privileged EXEC command after you enter the remote command { all | stack-member-number } privileged EXEC command, the complete output does not appear.

The workaround is to use the session stack-member-number privileged EXEC command. (CSCsz38090)

  • (Catalyst 3750-X or 3560-X switches) When the switch flash memory has less than 6 MB free space, there is not enough space in flash memory to hold temporary files created as part of a microcontroller unit (MCU) image upgrade, and the upgrade fails.

The workaround is to delete any unnecessary files in flash memory, delete the temporary files created as part of the failed upgrade, and try the MCU upgrade again. (CSCtd75400)

Diagnostics

  • (Catalyst 3750-X or 3560-X switches) When you enter the test cable-diagnostics tdr interface or the show cable-diagnostics tdr interface privileged EXEC command on an interface to determine the length of a connected cable, the cable length might be reported as N/A. This can occur when there is no link, a 10 Mb/s link, or a 100 Mb/s link, even though there are no cable faults. Cable length is reported correctly when a 1 Gb/s link is active on the interface.

The workaround to verify the cable length is to enter the commands when a Gigabit link is active on the interface or after disconnecting the far end of the cable. (CSCte43869)

EtherChannel

  • In an EtherChannel running Link Aggregation Control Protocol (LACP), the ports might be put in the suspended or error-disabled state after a stack partitions or a member switch reloads. This occurs when:

The EtherChannel is a cross-stack EtherChannel with a switch stack at one or both ends.

The switch stack partitions because a member reloads. The EtherChannel is divided between the two partitioned stacks, each with a stack master.

The EtherChannel ports are put in the suspended state because each partitioned stack sends LACP packets with different LACP Link Aggregation IDs (the system IDs are different). The ports that receive the packets detect the incompatibility and shut down some of the ports. Use one of these workarounds for ports in this error-disabled state:

Enable the switch to recover from the error-disabled state.

Enter the shutdown and the no shutdown interface configuration commands to enable the port.

The EtherChannel ports are put in the error-disabled state because the switches in the partitioned stacks send STP BPDUs. The switch or stack at the other end of the EtherChannel receiving the multiple BPDUs with different source MAC addresses detects an EtherChannel misconfiguration.

After the partitioned stacks merge, ports in the suspended state should automatically recover. (CSCse33842)

  • When a switch stack is configured with a cross-stack EtherChannel, it might transmit duplicate packets across the EtherChannel when a physical port in the EtherChannel has a link-up or link-down event. This can occur for a few milliseconds while the switch stack adjusts the EtherChannel for the new set of active physical ports and can happen when the cross-stack EtherChannel is configured with either mode ON or LACP. This problem might not occur with all link-up or link-down events.

No workaround is necessary. The problem corrects itself after the link-up or link-down event. (CSCse75508)

  • The switch might display tracebacks similar to this example when an EtherChannel interface port-channel type changes from Layer 2 to Layer 3 or the reverse:

15:50:11: %COMMON_FIB-4-FIBNULLHWIDB: Missing hwidb for fibhwidb Port-channel1 (ifindex 1632) -Traceback= A585C B881B8 B891CC 2F4F70 5550E8 564EAC 851338 84AF0C 4CEB50 859DF4 A7BF28 A98260 882658 879A58

There is no workaround. (CSCsh12472)

IEEE 802.1x Authentication

  • If a supplicant using a Marvel Yukon network interface card (NIC) is connected an IEEE 802.1x-authorized port in multihost mode, the extra MAC address of 0c00.0000.0000 appears in the MAC address table.

Use one of these workarounds (CSCsd90495):

Configure the port for single-host mode to prevent the extra MAC address from appearing in the MAC address table.

Replace the NIC card with a new card.

  • When MAC authentication bypass is configured to use Extensible Authentication Protocol (EAP) for authorization and critical authentication is configured to assign a critical port to an access VLAN:

If the connected device is supposed to be unauthorized, the connected device might be authorized on the VLAN that is assigned to the critical port instead of to a guest VLAN.

If the device is supposed to be authorized, it is authorized on the VLAN that is assigned to the critical port.

Use one of these workarounds (CSCse04534):

Configure MAC authentication bypass to not use EAP.

Define your network access profiles to not use MAC authentication bypass. For more information, see the Cisco Access Control Server (ACS) documentation.

  • When IEEE 802.1x authentication with VLAN assignment is enabled, a CPUHOG message might appear if the switch is authenticating supplicants in a switch stack.

The workaround is not use the VLAN assignment option. (CSCse22791)

Multicasting

• Multicast packets with a time-to-live (TTL) value of 0 or 1 are flooded in the incoming VLAN when all of these conditions are met:

Multicast routing is enabled in the VLAN.

The source IP address of the packet belongs to the directly connected network.

The TTL value is either 0 or 1.

The workaround is to not generate multicast packets with a TTL value of 0 or 1, or disable multicast routing in the VLAN. (CSCeh21660)

  • Multicast packets denied by the multicast boundary access list are flooded in the incoming VLAN when all of these conditions are met:

Multicast routing is enabled in the VLAN.

The source IP address of the multicast packet belongs to a directly connected network.

The packet is denied by the IP multicast boundary access-list configured on the VLAN.

There is no workaround. (CSCei08359)

• Reverse path forwarding (RPF) failed multicast traffic might cause a flood of Protocol Independent Multicast (PIM) messages in the VLAN when a packet source IP address is not reachable.

The workaround is to not send RPF-failed multicast traffic, or make sure that the source IP address of the RPF-failed packet is reachable. (CSCsd28944)

  • If the clear ip mroute privileged EXEC command is used when multicast packets are present, it might cause temporary flooding of incoming multicast traffic in the VLAN.

There is no workaround. (CSCsd45753)

  • When you configure the ip igmp max-groups number and ip igmp max-groups action replace interface configuration commands and the number of reports exceed the configured max-groups value, the number of groups might temporarily exceed the configured max-groups value. No workaround is necessary because the problem corrects itself when the rate or number of IGMP reports are reduced. (CSCse27757)
  • When you configure the IGMP snooping throttle limit by using the ip igmp max-groups number interface configuration on a port-channel interface, the groups learned on the port-channel might exceed the configured throttle limit number, when all of these conditions are true:

The port-channel is configured with member ports across different switches in the stack.

When one of the member switches reloads.

The member switch that is reloading has a high rate of IP IGMP joins arriving on the port-channel member port.

The workaround is to disable the IGMP snooping throttle limit by using the no ip igmp max-groups number interface configuration command and then to reconfigure the same limit again. (CSCse39909)

PoE or PoE+

  • When a loopback cable is connected to a switch PoE port, the show interface status privileged EXEC command shows not connected , and the link remains down. When the same loopback cable is connected to a non-PoE port, the link becomes active and then transitions to the error-disabled state when the keepalive feature is enabled. There is no workaround. (CSCsd60647)
  • The Cisco 7905 IP Phone is error-disabled when the phone is connected to an external power source.

The workaround is to enable PoE and to configure the switch to recover from the PoE error-disabled state. (CSCsf32300)

• The pethPsePortShortCounter MIB object appears as short even though the powered device is powered on after it is connected to the PoE port.

There is no workaround. (CSCsg20629)

  • (Catalyst 3750-X or 3560-X switches) When a powered device (such as an IP phone) connected to a PoE+ port restarts and sends a CDP or LLDP packet with a power TLV, the switch locks to the power-negotiation protocol of that first packet. The switch does not respond to power requests from the other protocol. For example, if the switch is locked to CDP, it does not provide power to devices that send LLDP requests. If CDP is disabled after the switch has locked on it, the switch does not respond to LLDP power requests and can no longer power on any accessories.

The workaround is to turn the powered device off and then on again.

QoS

  • When QoS is enabled and the egress port receives pause frames at the line rate, the port cannot send packets.

There is no workaround. (CSCeh18677)

• Egress shaped round robin (SRR) sharing weights do not work properly with system jumbo MTU frames.

There is no workaround. (CSCsc63334)

  • In a hierarchical policy map, if the VLAN-level policy map is attached to a VLAN interface and the name of the interface-level policy map is the same as that for another VLAN-level policy map, the switch rejects the configuration, and the VLAN-level policy map is removed from the interface.

The workaround is to use a different name for the interface-level policy map. (CSCsd84001)

• If the ingress queue has low buffer settings and the switch sends multiple data streams of system jumbo MTU frames at the same time at the line rate, the frames are dropped at the ingress.

There is no workaround. (CSCsd72001)

  • When you use the srr-queue bandwidth limit interface configuration command to limit port bandwidth, packets that are less than 256 bytes can cause inaccurate port bandwidth readings. The accuracy is improved when the packet size is greater than 512 bytes. There is no workaround. (CSCsg79627)
  • If QoS is enabled on a switch and the switch has a high volume of incoming packets with a maximum transmission unit (MTU) size greater than 1512 bytes, the switch might reload.

Use one of these workarounds:

Use the default buffer size.

Use the mls qos queue-set output qset-id buffers allocation1 ... allocation4 global configuration command to allocate the buffer size. The buffer space for each queue must be at least 10 percent. (CSCsx69718) (Catalyst 3750-X switches)

  • If you configure a large number of input interface VLANs in a class map, a traceback message similar to this might appear:
01:01:32: %BIT-4-OUTOFRANGE: bit 1321 is not in the expected range of 0 to 1024
 

There is no impact to switch functionality.

There is no workaround. (CSCtg32101)

RADIUS

• RADIUS change of authorization (COA) reauthorization is not supported on the critical auth VLAN.

There is no workaround. (CSCta05071)

Routing

• The switch stack might reload if the switch runs with this configuration for several hours, depleting the switch memory and causing the switch to fail:

The switch has 400 Open Shortest Path First (OSPF) neighbors.

The switch has thousands of OSPF routes.

The workaround is to reduce the number of OSPF neighbors to 200 or less. (CSCse65252)

  • When the PBR is enabled and QoS is enabled with DSCP settings, the CPU utilization might be high if traffic is sent to unknown destinations.

The workaround is to not send traffic to unknown destinations. (CSCse97660)

Smart Install

  • When upgrading switches in a stack, the director cannot send the correct image and configuration to the stack if all switches in the stack do not start at the same time. A switch in the stack could then receive an incorrect image or configuration.

The workaround is to use an on-demand upgrade to upgrade switches in a stack by entering the vstack download config and vstack download image commands. (CSCta64962)

  • When you upgrade a Smart Install director to Cisco IOS Release 12.2(55)SE but do not upgrade the director configuration, the director cannot upgrade client switches.

When you upgrade the director to Cisco IOS Release 12.2(55)SE, the workaround is to also modify the configuration to include all built-in, custom, and default groups. You should also configure the tar image name instead of the image-list file name in the stored images. (CSCte07949)

  • Backing up a Smart Install configuration could fail if the backup repository is a Windows server and the backup file already exists in the server.

The workaround is to use the TFTP utility of another server instead of a Windows server or to manually delete the existing backup file before backing up again. (CSCte53737)

  • In a Smart Install network with the backup feature enabled (the default), the director sends the backup configuration file to the client during zero-touch replacement. However, when the client is a switch in a stack, the client receives the seed file from the director instead of receiving the backup configuration file.

The workaround, if you need to configure a switch in a stack with the backup configuration, is to use the vstack download config privileged EXEC command so that the director performs an on-demand upgrade on the client.

When the backup configuration is stored in a remote repository, enter the location of the repository.

When the backup file is stored in the director flash memory, you must manually set the permissions for the file before you enter the vstack download config command. (CSCtf18775)

SPAN and RSPAN

• When egress SPAN is running on a 10-Gigabit Ethernet port, only about 12 percent of the egress traffic is monitored.

There is no workaround. This is a hardware limitation. (CSCei10129)

• (Catalyst 3750-E or 3560-E switches) The far-end fault optional facility is not supported on the GLC-GE-100FX SFP module.

The workaround is to configure aggressive UDLD. (CSCsh70244).

Stacking (only Catalyst 3750-X and Catalyst 3750-E Switch Stack)

  • When a switch stack is running 802.1x single host mode authentication and has filter-ID or per-user policy maps applied to an interface, these policies are removed if a master switchover occurs. Even though the output from the show ip access-list privileged EXEC command includes these ACLs, the policies are not applied.

The workaround it to enter a shutdown and then a no shutdown interface configuration command on the interface. (CSCsx70643)

• Where there is a mixed hardware stack with Catalyst 3750-X or Catalyst 3750-E and 3750 switches as stack members, when you change the configuration and enter the write memory privileged EXEC command, the unable to read config message appears.

The workaround is to wait a few seconds and then to reenter the write memory privileged EXEC command. (CSCsd66272)

  • When using the logging console global configuration command, low-level messages appear on both the stack master and the stack member consoles.

The workaround is to use the logging monitor global configuration command to set the severity level to block the low-level messages on the stack member consoles. (CSCsd79037)

• In a mixed stack which consists of Catalyst 3750 switches along with Catalyst 3750-X or Catalyst 3750-E switches, when the stack ring is congested with approximately 40 Gb/s of traffic, some of the local traffic from one port to another on a Catalyst 3750-X or 3750-E member might be dropped.

The workaround is to avoid traffic congestion on the stack ring. (CSCsd87538)

  • If a new member switch joins a switch stack within 30 seconds of a command to copy the switch configuration to the running configuration of the stack master, the new member might not get the latest running configuration and might not operate properly.

The workaround is to reboot the new member switch. Use the remote command all show run privileged EXEC command to compare the running configurations of the stack members. (CSCsf31301)

  • When the flash memory of a stack member is almost full, it might take longer to start up than other member switches. This might cause that switch to miss the stack-master election window. As a result, the switch might fail to become the stack master even though it has the highest priority.

The workaround is to delete files in the flash memory to create more free space. (CSCsg30073)

  • In a mixed stack of Catalyst 3750 switches and Catalyst 3750-X or 3750-E switches, when the stack reloads, the Catalyst 3750-X or Catalyst 3750-E might not become stack master, even it has a higher switch priority set.

The workaround is to check the flash. If it contains many files, remove the unnecessary ones. Check the lost and found directory in flash and if there are many files, delete them. To check the number of files use the fsck flash: command. (CSCsi69447)

  • A stack member switch might fail to bundle Layer 2 protocol tunnel ports into a port channel when you have followed these steps:

1. You configure a Layer 2 protocol tunnel port on the master switch.

2. You configure a Layer 2 protocol tunnel port on the member switch.

3. You add the port channel to the Layer 2 protocol tunnel port on the master switch.

4. You add the port channel to the Layer 2 protocol tunnel port on the member switch.

After this sequence of steps, the member port might stay suspended.

The workaround is to configure the port on the member switch as a Layer 2 protocol tunnel and at the same time also as a port channel. For example:

Switch(config)# interface fastethernet1/0/11
Switch(config-if)# l2protocol-tunnel cdp
Switch(config-if)# channel-group 1 mode on (CSCsk96058)
 
  • After a stack bootup, the spanning tree state of a port that has IEEE 802.1x enabled might be blocked, even when the port is in the authenticated state. This can occur on a voice port where the Port Fast feature is enabled.

The workaround is to enter a shutdown interface configuration command followed by a no shutdown command on the port in the blocked state. (CSCsl64124)

  • When the switch stack is in the HSRP active state and a master changeover occurs, you cannot ping the stack by using an HSRP virtual IP address.

There is no workaround. (CSCth00938)

Stack Power (Catalyst 3750-X only)

  • When a power stack has been configured in redundant mode, which is not the default, and then split by either removing cables or disabling StackPower ports, the newly created power stack has the same mode as the former power stack, but this is not shown in the configuration file.

The workaround when you are forming power stack topologies if the power stack mode is not the default (power sharing), you should also configure the power stack mode on the new power stacks by entering the mode redundant power-stack configuration command. (CSCte33875)

  • If you upgrade the Cisco Catalyst 3750-X switch in Cisco StackPower mode from Release 12.2(55)SE to Release 12.2(58)SE, the switch may repeatedly report under-budgeted power messages. This issue is caused by a change in the minimum power budget values.

The workaround is to perform a one-time power cycle by removing the power supplies and the Cisco StackPower cables after the upgrade to ensure a complete power down. On power up, the switch is programmed with the new minimum power budget values, which prevents these messages from occurring unless a valid under-budgeted power situation arises. (CSCtt70484)

VLANs

  • When the domain is authorized in the guest VLAN on a member switch port without link loss and an Extensible Authentication Protocol over LAN (EAPOL) is sent to an IEEE 802.1x supplicant to authenticate, the authentication fails. This problem happens intermittently with certain stacking configurations and only occurs on the member switches.

The workaround is to enter the shut and no shut interface configuration commands on the port to reset the authentication status. (CSCsf98557)

• The error message %DOT1X_SWITCH-5-ERR_VLAN_NOT_FOUND might appear for a switch stack under these conditions:

IEEE 802.1 is enabled.

A supplicant is authenticated on at least one port.

A new member joins a switch stack.

You can use one of these workarounds:

Enter the shutdown and the no shutdown interface configuration commands to reset the port.

Remove and reconfigure the VLAN. (CSCsi26444)

• When you enter the boot host retry timeout global configuration command to specify the amount of time that the client should keep trying to download the configuration and you do not enter a timeout value, the default value is zero, which should mean that the client keeps trying indefinitely. However, the client does not keep trying to download the configuration.

The workaround is to always enter a non zero value for the timeout value when you enter the boot host retry timeout timeout-value command. (CSCsk65142)

Device Manager Limitations

• When you are prompted to accept the security certificate and you click No , you only see a blank screen, and the device manager does not launch.

The workaround is to click Yes when you are prompted to accept the certificate. (CSCef45718)

Important Notes

Switch Stack Notes

  • Always power off a switch before adding or removing it from a switch stack.
  • The Catalyst 3560-X and Catalyst 3560-E switches do not support switch stacking. However, the show processes privileged EXEC command still lists stack-related processes. This occurs because these switches share common code with other switches that do support stacking.
  • Catalyst 3750-E switches running Cisco IOS Release 12.2(35)SE2 are compatible with Catalyst 3750 switches and Cisco EtherSwitch service modules running Cisco IOS Release 12.2(35)SE. Catalyst 3750-E switches, Catalyst 3750 switches, and Cisco EtherSwitch service modules can be in the same switch stack. In this switch stack, we recommend that the Catalyst 3750-E switch be the stack master.

Cisco IOS Notes

• Unlike other platforms, the response to an Energywise query on a Catalyst 3750-X or 3560-X is the actual switch power consumption and not a fixed number.

• If the switch requests information from the Cisco Secure Access Control Server (ACS) and the message exchange times out because the server does not respond, a message similar to this appears:

00:02:57: %RADIUS-4-RADIUS_DEAD: RADIUS server 172.20.246.206:1645,1646 is not responding.
 

If this message appears, make sure that there is network connectivity between the switch and the ACS. You should also make sure that the switch has been properly configured as an AAA client on the ACS.

• If the switch has interfaces with automatic QoS for voice over IP (VoIP) configured and you upgrade the switch software, when you enter the auto qos voip cisco-phone interface configuration command on another interface, you might see this message:

AutoQoS Error: ciscophone input service policy was not properly applied
policy map AutoQoS-Police-CiscoPhone not configured
 

If this happens, enter the no auto qos voip cisco-phone interface command on all interface with this configuration to delete it. Then enter the auto qos voip cisco-phone command on each of these interfaces to reapply the configuration.

Device Manager Notes

• You cannot create and manage switch clusters through the device manager. To create and manage switch clusters, use the CLI or Cisco Network Assistant.

  • When the switch is running a localized version of the device manager, the switch displays settings and status only in English letters. Input entries on the switch can only be in English letters.
  • For device manager session on Internet Explorer, popup messages in Japanese or in simplified Chinese can appear as garbled text. These messages appear properly if your operating system is in Japanese or Chinese.
  • We recommend this browser setting to speed up the time needed to display the device manager from Microsoft Internet Explorer.

From Microsoft Internet Explorer:

1. Choose Tools > Internet Options .

2. Click Settings in the “Temporary Internet files” area.

3. From the Settings window, choose Automatically .

4. Click OK .

5. Click OK to exit the Internet Options window.

  • The HTTP server interface must be enabled to display the device manager. By default, the HTTP server is enabled on the switch. Use the show running-config privileged EXEC command to see if the HTTP server is enabled or disabled.

If you are not using the default method of authentication (the enable password), you need to configure the HTTP server interface with the method of authentication used on the switch

Beginning in privileged EXEC mode, follow these steps to configure the HTTP server interface:

 

Command
Purpose

Step 1

configure terminal

Enter global configuration mode.

Step 2

ip http authentication { aaa | enable | local}

Configure the HTTP server interface for the type of authentication that you want to use.

  • aaa —Enable the authentication, authorization, and accounting feature. You must enter the aaa new-model interface configuration command for the aaa keyword to appear.
  • enable—Enable password, which is the default method of HTTP server user authentication, is used.
  • local—Local user database, as defined on the Cisco router or access server, is used.

Step 3

end

Return to privileged EXEC mode.

Step 4

show running-config

Verify your entries.

The device manager uses the HTTP protocol (the default is port 80) and the default method of authentication (the enable password) to communicate with the switch through any of its Ethernet ports and to allow switch management from a standard web browser.

If you change the HTTP port, you must include the new port number when you enter the IP address in the browser Location or Address field (for example, http://10.1.126.45:184 where 184 is the new HTTP port number). You should write down the port number through which you are connected. Use care when changing the switch IP information.

  • If you use Internet Explorer Version 5.5 and select a URL with a nonstandard port at the end of the address (for example, www . cisco.com:84 ), you must enter http:// as the URL prefix. Otherwise, you cannot launch the device manager.

Open Caveats

Unless otherwise noted, these caveats apply to Catalyst 3750-X, 3750-E, 3560-X, and 3560-E switches:

• CSCte99366

In a Smart Install network, when the director is connected between the client and the DHCP server and the server has options configured for image and configuration, then the client does not receive the image and configuration files sent by the DHCP server during an automatic upgrade. Instead the files are overwritten by the director and the client receives the image and configuration that the director sends.

Use one of these workarounds:

If client needs to upgrade using an image and configuration file configured in the DHCP server options, you should remove the client from the Smart Install network during the upgrade.

In a network using Smart Install, you should not configure options for image and configuration in the DHCP server. For clients to upgrade using Smart Install, you should configure product-id specific image and configuration files in the director.

• CSCtf79259 (Catalyst 3750-X or 3560-X switches)

If you install 10/100/1000BASE-TX or 100BASE-FX SFPs in the SFP+ module ports (port 2 or port 4), the ports are put in an error disabled state. These SFPs are not supported in the SFP+ ports.

There is no workaround.

• CSCtg35226 (Catalyst 3750-X or 3750-E switches)

Cisco Network Assistant displays the LED ports with a light blue color for all switches in a stack that have the Catalyst 3750G-48PS switch as part of the stack.

There is no workaround.

  • CSCtl77011

When port security is enabled on the port, problems arise during web authentication. If the port security violation is set to shutdown mode, the port is error disabled. If the port security violation is set to restrict mode, packets are dropped and an AUTHMGR-5-SECURITY_VIOLATION error is displayed. If the port security violation is set to protect mode, packets are dropped.

The workaround is to disable port security.

  • CSCtn94724 (Catalyst 3750-X switch)

When you remotely configure a macro on a PC running the Microsoft Windows environment, an extra space is introduced in the macro description interface configuration command that is applied on the interface. When the switch receives a Cisco Discovery Protocol (CDP) packet containing the macro, the description derived from the packet does not match the existing macro description applied on the interface. The CPU usage reaches 100 percent.

Use one of these workarounds:

Use a PC running the UNIX Common Deskotp Environment (CDE) to remotely configure the macro.

Use the macro auto execute global configuration command to directly configure the macro.

  • CSCto06796

When you disable an interface and configure voice and data on the same VLAN and enable the interface:

It causes a security violation but voice and data is authorized.

The configuration for the data VLAN policy changes after authentication. Use the show run interface interface configuration command to see this.

When you configure voice and data on the same VLAN on an enabled interface, it causes a security violation and an error message is displayed.

In both cases the workaround is to configure voice and data on separate VLANs.

  • CSCto25228 (Catalyst 3750-E switch)

When the show authentication sessions int interface interface command is entered, the VLAN policy and group information is not displayed. This happens when Open1x is configured on the interface and the DHCP IP address is obtained prior to authentication.

The workaround is to remove the Open1x configuration.

  • CSCto99322

If the switch is in multidomain authorization (MDA) mode and it receives three or more MAC addresses simultaneously or if the switch is in single-host mode and it receives two or more MAC addresses simultaneously, a security violation trap occurs in the shutdown and protect violation modes.

The workaround is to connect one device at a time.

  • CSCtq06316

If you configure multidomain authentication (MDA) with Open1x authentication and the restrict violation mode, a security violation occurs if the MAC address on the voice LAN is the last MAC address that the switch receives. However, the MAC address is added to the table as a dynamic MAC address and the connected data VLANs continue to access the interface.

The workaround is to connect the voice device first.

  • CSCtq06842

In the multidomain authentication (MDA) mode, if you configure the network-policy profile global configuration command and you remove a voice VLAN at the interface level after authentication, tracebacks and error messages are generated.

There is no workaround.

  • CSCtq12146

When MAC authentication bypass (MAB) is configured in single-host mode on the first port and multidomain authentication (MDA) is configured in open authentication mode on the second port, if the MAC Move feature is disabled on the switch, a security violation does not occur when the switch detects the same MAC address on both ports.

The workaround is to manually clear the MAC address table on the second port.

  • CSCtu37997

The PLATFORM_STACKPOWER-4-REDUNDANCY_LOSS message is displayed even though the power supply capacity is adequate.

There is no workaround.

  • CSCtx37129 (Catalyst 3750-E and 3750-X switches)

If you enter the shutdown interface configuration command on the the Fast Ethernet 0 router interface and VLAN 1 client switch interface, and then restart the master switch, the shutdown status of these two interfaces are not shown correctly. If you check their status with the show running-config privileged EXEC command, these interfaces are shown as up..

There is no workaround.

  • CSCty02174 (Catalyst 3750-X)

A stack power member switch that does not have a PSU connected in Slot A or Slot B might fail during a Cisco IOS upgrade.

The workaround is to ensure that each stack member has at least one PSU connected. Alternatively, you can download and install the Cisco IOS image using the archive download-sw /force-ucode-reload privileged EXEC command.

Resolved Caveats

Caveats Resolved in Cisco IOS Release 12.2(55)SE9

Caveats Resolved in Cisco IOS Release 12.2(55)SE8

Caveats Resolved in Cisco IOS Release 12.2(55)SE7

Caveats Resolved in Cisco IOS Release 12.2(55)SE6

Caveats Resolved in Cisco IOS Release 12.2(55)SE5

Caveats Resolved in Cisco IOS Release 12.2(55)SE4

Caveats Resolved in Cisco IOS Release 12.2(55)SE3

Caveats Resolved in Cisco IOS Release 12.2(55)SE1

Caveats Resolved in Cisco IOS Release 12.2(55)SE

Caveats Resolved in Cisco IOS Release 12.2(55)SE9

  • CSCsh15817

IP Service Level Agreement operations on a router that also has a response time reporter (RTR) enabled on it, fails at the source. This happens because the RTR responder does not receive the UPD socket events when a UDP packet is routed through a VRF.

The workaround is to use IP SLA operations without VRFs.

  • CSCtq91847

The switch fails while running 802.1X configuration.

There is no workaround.

  • CSCtr38563

Switch fails when a secondary IP address is configured on a VLAN interface.

There is no workaround.

  • CSCtr16643

Access Control List (ACL) with deny access control entries appear on the switch virtual interface even though the switch does not deny traffic.

The workaround is to remove the no ip unreachables command from the switch virtual interface to stop the messages.

  • CSCua32401

In a stack, switches fail while running Cisco IOS Release 15.0(1)SE2.

There is no workaround.

  • CSCuc63146

Port-channel interface flaps while adding or removing a VLAN from the trunk on a port-channel interface if one or more port members are not in P or D states.

The workaround is to shut down the port members which are not in P or D states and make the VLAN changes.

  • CSCuh43252

After upgrading to Cisco IOS Release 15.0(2)SE3, the switch does not authenticate using TACACS. The TPLUS process on the switch pushes the CPU usage up to 99%.

The workaround is to downgrade the switch software to a version prior to Cisco IOS Release 15.0(2)SE3.

  • CSCui13971 (Catalyst 3750-X and 3750-E switches)

When 802.1X protocol is configured on a switch stack, the authentication protocol works on master switch but does not work on the stack members.

The workaround is to run the show command followed by the no show command on the switch.

  • CSCui38106 (Catalyst 3750-X and 3560-X switches)

When two switches are connected through 10x 1G link using front-end ports and Cisco TrustSec (CTS) is configured on them, the traffic drops periodically across the Media Access Security (MACsec) link. The late packet counter increments at random intervals which leads to packet drops.

There is no workaround.

  • CSCui65252

When Dynamic ARP Inspection (DAI) is enabled over port channel, it stops processing the Address Resolution Protocol (ARP) packets.

The workaround is to set up a direct link between the access switch and the DHCP server.

  • CSCuj77254

Access Control List (ACL) configured on guest VLAN interface for 802.1X unauthenticated clients do not get applied.

The workaround is to configure the ACL on the dot1x port itself instead of the guest VLAN interface.

  • CSCuj77426 (Catalyst 3750-E switch)

After running the shutdown command followed by the no shutdown command on the switch, few ports go into not connected state even though these are connected to a remote device.

The workaround is to run the shutdown command followed by the no shutdown command on the affected ports.

  • CSCtx37546

After stack switchover length 0 automatically gets set to line vty on stack master or member.

There is no workaround.

  • CSCsv29870

When Routing Information Protocol (RIP) is configured and clear ip route* command is run on the switch, the RIP sends multiple requests for each interface instead of one request.

There is no workaround.

  • CSCue92168

When Quality of Service (QoS) is enabled in a switch stack, the traffic is disrupted.

The workaround is to reload the switch.

  • CSCue94493

When Cisco IP Communicator (CIPC) is turned on and the Cisco Discovery Protocol (CDP) is enabled on the switch, the MAC address of CIPC incorrectly appears in the voice VLAN.

The workaround is to disable CDP on Cisco IP Communicator.

  • CSCug51225 (Catalyst 3750-X and 3750-E switches)

When a new member is added to the switch stack, it triggers a Topology Change Notification (TCN) flood over the network.

There is no workaround.

  • CSCuh80308

When Access Control List (ACL) entries are applied to the switch interface using copy tftp: running-config command, it stops forwarding fragmented traffic.

Use one of the following workarounds:

Apply the ACL configuration through CLI.

Remove the ACL from the interface and apply again through the CLI.

In the ACL specify the traffic using IP addresses.

  • CSCsw43080

For Cisco IOS Releases earlier than 12.4(24)T, traceback and %DATACORRUPTION-1-DATAINCONSISTENCY errors are observed in the log.

There is no workaround.

  • CSCuh72558

In a switch stack, if a stack member is connected to a Meru access point that requires 802.3at or 29.5W POE+ inline power, connection over 802.3at POE+ fails.

The workaround is to move all affected POE+ devices to the stack master.

  • CSCui56736

This issue is seen on Cisco IOS Releases 12.2(55)SE and later, 12.2(58)SE and later, and 15.0(2)SE and later. When the switch stack is reloaded, configuration is initialized, the vlan.dat file is deleted, and VTP version 3 is configured, the show vtp status command gives inconsistent results on the stack master and member switches. When the command is run on the stack master, the stack master is shown as server in the VLAN and transparent in the Multiple Spanning Tree (MST) instance. But when the command is run on a member switch, the member switch is shown as the primary server for both the VLAN and the MST instance. When the vtp mode transparent mst command is entered, the Device mode already VTP Transparent for MST message is displayed. Now if the master switch is reloaded, the whole stack is shown as the primary server for both the VLAN and the MST.

The workaround is to change the VTP version to 2 and then change it back again to 3.

  • CSCtd62339

The following error is seen when EIGRP is enabled on the switch: %EIGRP: Failed to get client handle from BFD

There is no workaround.

  • CSCti88809

If Smart Install is enabled and the shutdown command is entered on a range of interfaces followed by the no shutdown command, a traceback is seen due to data corruption.

The workaround is to disable Smart Install by entering the no vstack global configuration command.

  • CSCtr24525

The value of the logmessageperiod command in the Precision Time Protocol (PTP) announce packet shows the erroneous value of 127.

There is no workaround.

Caveats Resolved in Cisco IOS Release 12.2(55)SE8

  • CSCtf23298

When a Terminal Access Controller Access Control System (TACACS) server is configured with a single connection, the CPU usage is high.

The workaround is to remove the single connection option.

  • CSCtt19737

Cisco IOS IP SLAs probes fail because the control message is blocked. The firewalls block the control message when a response packet is not returned to the originating port.

The workaround is to disable IP SLAs control messages for this probe instance.

  • CSCty66157

The snmp-server group command does not associate both IPv6 and IPv4 ACLs simultaneously with an SNMP group.

The workaround is to use the snmp-server user command, which associates both IPv4 and IPv6 ACLs with an SNMP user.

  • CSCub93357

After configuring switch port security using the switchport port-security maximum 1 vlan access command, if an IP phone with a personal computer connected to it is connected to the same access port, the switch displays the following error message:

%PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address XXXX.XXXX.XXXX on port <interface>

There is no workaround.

  • CSCuc10143

In the event of a power supply failure in the Redundant Power System (RPS) 2300 connected to a switch, the switch sends continuous traps with RPS states alternating between RPS unknown and RPS normal.

The workaround is to disconnect the RPS from the switch in the event of a power failure. This helps to prevent the traps.

  • CSCuc95754

Port ASIC's TCAM test fails when executing on-demand diagnostic tests using the diagnostic start command.

The workaround is to ignore the results of on-demand diagnostic tests, if Power-On Self-Test (POST) at bootup succeeds.

  • CSCud79753

When a switch is configured with Cisco IOS IP SLAs FTP GET operation and if the target file is unavailable, the switch experiences a memory leak and may become unresponsive if it runs out of memory.

The workaround is to configure the Cisco IOS IP SLAs FTP GET operation only after verifying the availability of the remote target file and setting the permissions for the file, as appropriate. This allows the switch to retrieve the file and not experience a memory leak.

  • CSCud96215 (Catalyst Switches 3750-E and 3560-E)

Link State Group (LSG) downstream interfaces flap continuously without an upstream interface flap. LSG downlink port flaps when SFP+ is used as an uplink port. This issue also appears if SFP+ is configured in a flexlink configuration.

There is no workaround. The configuration recovers automatically.

  • CSCue07405

When manually running on-demand diagnostic tests on a stack member using the diagnostic start switch number test all interface configuration command, the test TestPortAsicRingLoopback fails arbitrarily.

The workaround is to run only the TestPortAsicRingLoopback test ( diagnostic start switch number test 4 interface configuration command) on the stack member. Isolate the stack member and then run the diagnostic start switch number test all interface configuration command on the rest of the stack.

Caveats Resolved in Cisco IOS Release 12.2(55)SE7

  • CSCtg52885

The Hot Standby Router Protocol (HSRP) on dot1q sub-interfaces remains in INIT state after a physical link flap on the trunk port.

The workaround is to enter the shutdown and no shutdown command on the interface.

  • CSCtx02214 (Cisco Catalyst Switch 3750-X-48P)

When an IP phone is connected to a switch port in which trust is configured with the mls qos trust dhcp interface configuration command and service-policy is enabled on all of the interfaces, the switch fails.

There is no workaround.

  • CSCty79665 (Cisco Catalyst Switch 3750-E)

In a switch stack with more than 5 switches, if there are more than 200 voice clients connected to the switch, several ports on the switch become error-disabled. The PLATFORM_PM-3-HOSTACCESSFAIL message is displayed when a new user is being authorized on the switch.

The workaround is to run the errdisable recovery cause port-mode-failure privileged EXEC command on each switch.

  • CSCtz96168

IPv6 packets travel randomly between two isolated ports that are in the same VLAN.

There is no workaround.

  • CSCua54224 (Cisco Catalyst Switches 3750-E and 3750-X)

If several interfaces on the stack (35 to 40 or more) flap at the same time, loop guard is activated and the root port is blocked and unblocked. The following error message is displayed:

%SPANTREE-2-LOOPGUARD_BLOCK: Loop guard blocking port GigabitEthernet1/0/1 on MST0.

%SPANTREE-2-LOOPGUARD_UNBLOCK: Loop guard unblocking port GigabitEthernet1/0/1 on MST0.

There is no workaround.

• CSCub55790

The Smart Install client feature in Cisco IOS Software contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

Affected devices that are configured as Smart Install clients are vulnerable.

Cisco has released free software updates that address this vulnerability. There are no workarounds for devices that have the Smart Install client feature enabled.

This advisory is available at the following link:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130327-smartinstall

  • CSCub92642

If the switch is configured with Multicast Distributed Switching (MDS), memory leaks if the multicast-routing distributed command is toggled repeatedly.

  • CSCuc85964 (Cisco Catalyst Switches 3560-E and 3560-X)

If a mixed switch stack is reloaded, the MAC address table does not synchronize between the master and the member switches.

The workaround is to run the clear mac address-table dynamic privileged EXEC command when the switch is reloaded and traffic starts flowing.

  • CSCud17778

Memory leaks (due to SNMP traps) cause the switch to respond slowly to commands; eventually the switch fails. This is observed when more than one SNMP server host is configured, one of the host broadcasts SNMP traps, or the snmp-server enable traps snmp authentication coldstart warmstart command is configured.

The workaround is to disable the snmp-server enable traps snmp authentication coldstart warmstart command and reload the switch.

  • CSCud21309

In a private VLAN, isolated ports leak ARP packets when port-based authentication is enabled.

There is no workaround.

Caveats Resolved in Cisco IOS Release 12.2(55)SE6

  • CSCef01541

The switch processes data packets that are sent to the network address of an interface if the layer-2 frame encapsulating that packet is specifically crafted to target layer-2 address of the interface or a broadcast layer-2 address.

The workaround is to use Cisco Express Forwarding (CEF).

  • CSCtk18810

High memory usage is seen with the 'Virtual Exec" process.

There is no workaround.

• CSCto57723

Cisco IOS Software and Cisco IOS XE Software contain a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. An attacker could exploit this vulnerability by sending a crafted request to an affected device that has the DHCP version 6 (DHCPv6) server feature enabled, causing a reload.

Cisco has released free software updates that address this vulnerability. This advisory is available at the following link:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-dhcpv6

  • CSCtt31901

The sh udld neighbor command does not work.

The workaround is to enable the udld port aggressive command on the interface level once.

  • CSCtw58495

The switch stops working when you enter the show epm session summary privileged EXEC command.

There is no workaround.

  • CSCtx20903

In a single connection-enabled Terminal Access Controller Access Control System (TACACS) server, when the primary TACACS server goes down , the authentication fallback to the secondary server fails.

The workaround is to disable the single connection.

  • CSCtx47330 (Catalyst Switch 3750-X)

The Gigabit Ethernet port on the switch stack does not work when several ports are in the link up state.

There is no workaround.

  • CSCtx61557

The switch stops working even after a successful 802.1x authentication of the client.

There is no workaround.

  • CSCtx96491

A port configured and authenticated with 802.1x security may not correctly detect a loop even if the Bridge Protocol Data Unit (BPDU) guard is configured on the interface. This may result in 100 percent CPU utilization because of the Spanning Tree Protocol (STP) process of the switch.

The workaround is to configure the switch with the authentication open or authentication mac-move permit command.

  • CSCtx99483

The switch reloads unexpectedly due to segV exception while making PBR configuration changes.

There is no workaround.

  • CSCty93544

Traffic that should be dropped or denied by an Access Control List (ACL) is permitted by the switch.

The workaround is to remove and reapply the ACL.

  • CSCtz27507

When a switch is configured for SNMP and receives SNMP packets from an authenticated user, a successful exploitation causes the affected device to reload. This vulnerability could be exploited repeatedly to cause an extended Denial of Service (DoS) condition.

There is no workaround.

  • CSCtz54899 (Catalyst Switch 3750-E)

GLC-T in 12.2(55)SE5/ WS-C3750X-24S does not link up.

There is no workaround.

  • CSCtz92782

Advanced Access Control List (dACL) does not get applied to a switch interface configured for Multi-Domain Authentication (MDA).

The workaround is to modify the dACL name and configuration.

  • CSCua09639

ARP is blocked with open authentication-enabled switchports.

The workaround is to run the command clear authentication session.

Caveats Resolved in Cisco IOS Release 12.2(55)SE5

  • CSCsy43147

During a Telnet session, the router crashes when the TACACS+ server is configured or unconfigured ( tacacs-server host command) using the single-connection keyword.

The workaround is to not use the single-connection keyword.

  • CSCtb35715

When you enter the show running-config interface configuration command, IP Service Level Agreement notifications are shown as enabled even when you have not enabled this configuration using the ip sla enable reaction-alerts interface configuration command.

There is no workaround.

  • CSCtc18841

If local proxy Address Resolution Protocol (ARP) is configured on the VLAN interface, the ARP entry for the Hot Standby Router Protocol (HSRP) enters into an incomplete state.

The workaround is to remove the proxy ARP feature on the VLAN interface (by using the no ip local-proxy-arp interface configuration command) and restart the interface.

  • CSCtg38468

When AAA authorization is used with TACACS+, an error is displayed if the banner message ( banner exec global configuration command) starts with a blank character.

The workaround is to not start the banner message with a blank character.

  • CSCth00398

If the no vtp VLAN configuration command is used on a port that receives VTP updates, the switch does not process Layer 2 control traffic (STP and CDP) after some time.

The workaround is to configure VTP on the port or to not use the no vtp command.

  • CSCtj22354

The switch fails when LLDP data units with Type Length Value (TLV) of more than 10 management addresses (MA) are received.

The workaround is to disable the sending of LLDP MA TLVs on peer hosts.

  • CSCtj89743

CPU usage is high when a device connected to the switch is accessed using the https://IP_address command on the router.

The workaround is to reload the device.

  • CSCtj95182

If a network scanner is used to check the network components, a memory leak occurs in the SMI IBC/IBD server process, and the CPU load is unusually high.

There is no workaround.

  • CSCtn10697?

The switch crashes when DCHP snooping is enabled with value 125 and an offer packet is received.

There is no workaround.

  • CSCtn11683 (Catalyst 3560-X and 3750-X switches)

The port stops forwarding traffic. The packets sent counter increments but the receive counter does not increment.

The workaround is to save the configuration and restart the switch.

  • CSCto72927

If a Tcl policy is copied to the router, the router fails when an event manager policy is configured.

There is no workaround.

  • CSCtq09233

If a CLI configuration text file is copied from a Windows system to the switch, a space is appended to the end of the macro description command when the file is read from the flash of the switch. This leads to errors resulting in high CPU utilization on the switch. Another possible issue is that the macro is not removed when the link goes down or the connected device is removed from the switch.

The workaround is to copy the configuration file from a non-Windows system (like UNIX or Linux) or convert the file to an appropriate UNIX format before copying.

  • CSCtq82410 (Catalyst 3560-E switches)

The switch crashes whenthe port is created with a 10-Gb Ethernet channel on the other end.

The workaround is to downgrade to a Cisco IOS release earlier than 12.2(55)SE.

  • CSCtr28857

The router crashes when Multicast Source Discovery Protocol (MSDP) multicast routing is enabled.

The workaround is to use the no ip sap listen and no ip igmp join-group group-address interface configuration commands.

  • CSCtr55645

IPv6 multicast packets for routing protocols (such as OSPFv3 hello messages) are not enqueued to CPU queue 3 as expected.

There is no workaround.CSCtr75298 (Catalyst 3750-X switches)

Change of Authorization (CoA) does not work on a switch running the LAN Base feature.

The workaround is to apply a temporary IP base evaluation license so that CoA can work until a Cisco IOS upgrade or a permanent IP base license can be applied.

  • CSCtr87729 (Catalyst 3750-E and 3750-X switches)

The stack member switch MAC address table does not synchronize correctly after reload.

The workaround is to reload the channel interface using the shutdown interface configuration command followed by the no shutdown command. Alternatively, clear the MAC address table.

  • CSCts34688

The switch crashes due to the "HACL Acl Manager" memory fragmentation when a large access control list (ACL) is modified.

The workaround is add or remove ACE entries in sequential order when the ACL is modified.

  • CSCts35746 (Catalyst 3750-E and 3750-X switches)

When a standalone switch is added to an existing switch stack that runs a no payload encryption (NPE) image, the auto-upgrade process fails.

There is no workaround.

  • CSCts56125 (Catalyst 3560-E and 3750-E switches)

When a switch powers on and none of the ports are up, the switch reloads in 15 minutes if it cannot contact the TACACS+ server.

The workaround is to not use the broadcast keyword in the TACACS+ server configuration.

  • CSCts58073

A threshold violation error message is displayed when a X2-10GB-LR module is installed on the switch (with or without a fiber cable). An example error message is:

SFF8472-5-THRESHOLD_VIOLATION: Te1/0/1: Voltage low alarm; Operating value: 0.00 V, Threshold value: 2.96 V

There is no workaround.

  • CSCts75641

Routing Information Protocol (RIP) Version 2 packets egressing an 801.1Q tunnel interface are triplicated.

There is no workaround.

  • CSCtt37202

If a client switch is authorized using MAC Authentication Bypass (MAB), and then by using the 802.1x standard and dynamic VLAN assignment, the MAC address of the switch is not updated in the MAC address table of slave switches.

The workaround is to not use both the 802.1x and dynamic VLAN assignment configurations for the client switch.

  • CSCtu08022 (Catalyst 3750-X switches)

If duplex mode is configured on a WS-C3750X-12S or WS-C3750X-24S stacked switch, the downlink interfaces revert to auto-negotiate mode when the stack is restarted. This issue will not affect ports on the stack master, but all slave switches of type -12S/-24S are affected.

The workaround is to have only one -12S/-24S switch in a stack and make it the stack master.

  • CSCtu17483

The switch crashes when an IP phone that uses LLDP and authenticates itself using MAC Authentication Bypass (MAB) or 802.1x is physically disconnected and reconnected to the switch port.

The workaround is to remove the aaa authorization network default group SG-PBA global configuration command.

Caveats Resolved in Cisco IOS Release 12.2(55)SE4

  • CSCta85026

The Dynamic Host Configuration Protocol (DHCP) CLI does not accept white spaces in raw ASCII option in the DHCP pool configuration submode. This issue is seen in Cisco IOS Release 12.4(24)T1 and later.

There is no workaround.

  • CSCtg11547

In a VPN Routing and Forwarding (VRF) aware setup, messages are not sent to the syslog server. This issue applies to Cisco IOS Release 12.2(53)SE and 12.2(53)SE1. This situation does not occur if system logging is configured in the global table.

This problem has been corrected.

  • CSCth87458

A memory leak occurs in the SSH process, and user authentication is required.

The workaround is to allow SSH connections only from trusted hosts.

  • CSCti37197

If a tunnel interface is configured with Cisco Discovery Protocol (CDP), the switch fails when it receives a CDP packet.

The workaround is to disable CDP on the interface by using the no cdp enable interface configuration command.

  • CSCtj56719

The switch fails when the Differentiated Services Code Point (DSCP) mutation name is longer than 25 characters.

The workaround is to configure DSCP mutation names with fewer than 25 characters.

• CSCtj83964

On a switch running Protocol-Independent Multicast (PIM) and Source Specific Multicast (SSM), multicast traffic might not be sent to the correct port after the switch reloads.

The workaround is to enter the clear ip route privileged EXEC command or reconfigure PIM and SSM after a reload.

  • CSCtl60151

The switch sometimes reloads after a CPU overload, regardless of the process that is overloading the CPU.

This problem has been corrected.

  • CSCtn11259 (Catalyst Switches 3750-E and 3750-X)

If a switch stack is configured with the stack-mac persistent timer value interface configuration command, the switch virtual interface (SVI) should remain in shutdown mode during a switchover. In this case, the SVI is in up mode.

The workaround is to specify the timer value to be long enough so that the stack's MAC address is not changed.

  • CSCtr79386

The switch fails when DHCP snooping is configured and packet data traffic is excessive. The traffic exhausts the I/O memory and triggers the switch to crash.

There is no workaround.

Caveats Resolved in Cisco IOS Release 12.2(55)SE3

  • CSCtn67868 (Catalyst 3650-X and 3750-X switches)

When you enter the show monitor privilege EXEC command the monitor source port does not appear. This happens if the monitor source port is a pluggable module and you set these source port combinations:

Gigabit Ethernet (GE) 1/1 with GE 1/2 or GE 1/4

GE 1/3 with GE 1/2 or GE 1/4

The workaround is to use the show platform monitor session privilege EXEC command to display the source port.

  • CSCto10165

A vulnerability exists in the Smart Install feature of Cisco Catalyst Switches running Cisco IOS Software that could allow an unauthenticated, remote attacker to perform remote code execution on the affected device.

Cisco has released free software updates that address this vulnerability.

There are no workarounds available to mitigate this vulnerability other than disabling the Smart Install feature.

This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20110928-smart-install.shtml .

  • CSCto11146 (Catalyst 3560-X switch)

If a Catalyst 3560-X switch has a C3KX-NM-1 G module and you choose Monitor > Port Statistics in the Embedded Device Manager, the page is blank and no ports appear.

The only workaround is to remove the module if you are not using any of the module ports. Otherwise, there is no workaround.

  • CSCto46868 (Catalyst 2918, 2960, 2960-S, 3560, 3750, 3750-X, 3560-X, 3750-E, 3560-E switches)

If you configure multidomain authentication (MDA) with Open1x authentication and the restrict violation mode, only two MAC addresses are allowed to access the interface. A security violation occurs when a third MAC address on a voice VLAN tries to access the interface. The voice VLAN is not authenticated, and a syslog message is generated. However, the MAC address is not removed from the voice VLAN because Open1x authentication is configured. If you have authorized the voice VLAN with a policy, such as a dynamic VLAN, the policy is not applied.

The workaround is to not configure a voice VLAN on the phone.

  • CSCto55124

When a member switch port security is used with port-based dot1x authentication and the switch MAC address is sticky, a connected device authenticates itself. Its MAC address is added as sticky in the switch configuration and in the port security tables of the stack switches. When the switch is shut down, the device MAC address is removed from the master switch, but it is retained in the member switch security tables. When the interface is re-enabled, the device MAC address is restored to the master switch configuration.

The workaround is to use port security without dot1x authentication.

Caveats Resolved in Cisco IOS Release 12.2(55)SE1

• CSCtb45880 (Catalyst 3750-X or 3560-X switches)

On a 48-port PoE switch with many ports connected to PoE devices, most of which are Cisco + IEEE powered devices, when you apply an Auto Smartports (ASP) global macro to the switch and enter the interface range gigabitethernet 1-48 interface command followed by the shutdown and no shutdown interface commands, the switch remains in a retry loop and fails to bring up all of the PoE devices. The high CPU usage caused by frequently applying and removing ASP macros causes some of the PoE timers to expire during the retry cycle, creating a convergence problem.

Use one of these workarounds:

Reduce the number of Cisco + IEEE powered devices in the system.

Do not use Auto Smartports global macro processing when the system has a significant number of Cisco + IEEE powered devices.

Do not use the interface range interface configuration command with the shutdown and no shutdown interface commands for all 48 ports at the same time when all ports are connected to PoE devices and ASP global macro configuration is applied. Use the interface range command in stages with fewer ports in each range.

• CSCtb77390

The SFP+ module PID appears incorrectly in the show inventory priviledged EXEC command.

The workaround is to get the correct PID from the SFP+ module label.

• CSCtc91312

EnergyWise is enabled and you use the energywise level level recurrence importance importance at minute hour day_of_month month day_of_week interface configuration command to configure a recurring event on a switch. After the time changes from daylight savings time to standard time, the switch might

Restart when it tries to power a PoE device

Power on or off the PoE device at an incorrect time

Fail

This occurs when the time change for the next year occurs after the time change for the current year.

Before the time change occurs, use one of these workarounds:

Remove the recurring events from the EnergyWise configuration, do not use recurring events for a week, and reconfigure them a week after the time change occurs.

Use the energywise level level recurrence importance importance time-range time-range-nam e interface configuration command to reschedule the events.

Use the power inline auto interface configuration command to power on the PoE port.

• CSCtf30566

The switch fails when both voice and data VLAN are statically configured as VLAN 1 and an authentication takes place (phone connection or automatic re-authentication). The switch does not fail if voice and data VLANs are assigned dynamically through the Access Control Server (ACS), even if they are configured as VLAN 1.

There is no workaround.

• CSCtf37591 (Catalyst 3750-X or 3560-X switches)

On a Catalyst 3750-X or 3560-X switch running the LAN base feature set, the Auto Smartports macro commands are accepted, but do not work or have any effect.

The workaround is to upgrade to the IP base or IP services feature set if you want to use Auto Smartports.

• CSCtg04649 (Catalyst 3750-X, 3560-E and 3750-E switches)

When auto negotiation is not used, you cannot manually change the duplex setting on any interface, even if the interface command is successful and the switch enters the command in the configuration. The switch interface continues to operate at the old duplex value.

The workaround is to enable auto negotiation on the switch interface and then manually set the desired duplex value. Alternatively, enter the shutdown and then the no shutdown interface configuration command. This sets the duplex value as specified in the interface configuration.

• CSCth50601 (Catalyst 3570-E switches)

In a mixed stack of Catalyst 3750 and 3750-E switches running Cisco IOS Release 12.2(53)SE, a Catalyst 3750-E switch is not elected as the stack master even if it has a higher priority than a Catalyst 3750 switch.

The workaround is to start the Catalyst 3750-E switch, and after it is up, start the rest of the switches.

• CSCth62692

The ip igmp option is missing in the command line interface subcommand query help, accessed by entering ? after the configure terminal interface interface-id # prompt. When you enter ip ? in interface configuration mode, the igmp keyword does not appear, even though the igmp subcommands and functions, such as ip igmp filter and i igmp snooping, are available on the interface.

There is no workaround.

• CSCth74561 (Catalyst 3750-E, 3560-E switches)

This message might appear when you insert an SFP+ module in the CVR-X2-SFP10G converter module or when you reload the switch with an SFP+ module installed in the CVR-X2-SFP10G converter module:

GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR
 

You could also face intermittent link issues when using the CVR-X2-SFP10G module.

There is no workaround

• CSCth79724 (Catalyst 3560-X switch)

This message appears on a Catalyst 3560-X switch running Cisco IOS Release 12.2(53)SE2 when you remove a hot-swappable C3KX-NM-1 G module and module ports are still connected to the switch:

13:36:22 PDT Mon Jul 12 2010: Unexpected exception to CPUvector 2000, PC = 1B78D28

-Traceback= 1B78D28 10A2ADC 1B83C64 1B5499C 1B25B64 1940694 19408A8 1940B04 1A10478 1A1026C 1A100EC 1A0B4C4 1A0B8EC 1E78B6C 1E6F5F8

There is no workaround.

  • CSCth88306 (Catalyst 3750-E and 3560-E switches)

This message appears after inserting the CVR-X2-SFP converter module and the X2-10GB-SR transceiver modules in the10-Gigabit slots of the Catalyst 3750-E and 3560-E switches:

%GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port Te1/0/1 has bad crc

There is no workaround.

• CSCti21077 (Catalyst 3750-X, and 3560-X switches)

When you use a 10 G SR Agilent/ Avago SFP+ (Cisco PID: SFP-10G-SR VID 02 or earlier) in either or both of the 10 G SFP+ slots of a stacked or stand alone switch that uses a C3KX-NM-10 G Network module, PoE might not supplied when new phones are added. Examples of tracebacks you might see in such cases:

FRNTEND_CTRLR-2-SUB_INACTIVE: The front end controller 2 is inactive
-Traceback= 1D12690 1D12A60 1EE7068 1EDDAD8
%FRNTEND_CTRLR-2-SUB_INACTIVE: The front end controller 0
 

Agilent/Avago brand SFP+ modules have the following serial number prefixes: AGA, AGM, AGC, AGS, AVG.

The workaround is to replace the Avago SFP+ SR module with a different vendor’s part. Contact TAC to process return materials authorization (RMA). If you also have issues with CPU usage, refer to CSCti61764.

• CSCti30070

If the status of the AAA server is DEAD and you configure MAC Authentication Bypass (MAB), the client is authorized in the critical VLAN state but the ARP request for the client gateway is not resolved. To check the status of the AAA server, enter the show aaa servers priviledged EXEC command.

There is no workaround.

• CSCti61070 (Catalyst 3750-E and 3750-X switches)

In a switch stack running Cisco IOS Release 12.2(52)SE, the master switch does not join the stack if there is live traffic between the master and member switches.

There is no workaround.

• CSCti61764 (Catalyst 3750-X and 3560-X switches)

When you use a 10 G SR Agilent/ Avago SFP+ (Cisco PID: SFP-10 G-SR VID 02 or earlier) in either or both of the 10 G SFP+ slots of a stacked or stand alone switch that uses a C3KX-NM-10G Network module, the switch might report a more than 90 percent CPU usage because of internal processes. Sample CPU outputs:

Switch# show process cpu | ex 0.00
3750X_A#show process cpu | ex 0.00
CPU utilization for five seconds: 92%/0%; one minute: 92%; five minutes: 92%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
50 49556124 516496 95946 15.55% 11.86% 11.92% 0 SFF8472
153 192375642 15029102 12800 67.52% 67.91% 67.63% 0 Hulc LED Process
 

Agilent/Avago brand SFP+ modules have the following serial number prefixes: AGA, AGM, AGC, AGS, AVG

The workaround is to replace the Avago SFP+ SR module with a different vendor’s part. Contact TAC to process return materials authorization (RMA).

If you also have PoE issues with the switch or stack, refer to CSCti21077.

• CSCti69845

When MAC Authentication Bypass (MAB) is used in multi-authentication mode, a security violation occurs after successful authentication.

The workaround is to use a different authentication mode (single, multidomain or multihost).

• CSCti72424

When you enter the aaa accounting send stop-record authentication failure global configuration command on the switch to refine authentication and enable the authentication manager process, the switch might experience a memory leak. This can occur on switches when 802.1x and MAC authentication bypass are enabled, and both authentication attempts fail and then succeed. If the client is then removed from the interface when the port shuts down or the client logs off, the memory leak occurs every time the client is reattached.

The workaround is to enter the no aaa accounting send stop-record authentication failure to disable the process.

• CSCtj01638

After you upgrade to Cisco IOS Release 12.2(55)SE, port security might not work properly, and the ports might not come online.

There is no workaround.

• CSCtj03875

When you disconnect the spanning tree protocol (STP) peer link, the STP port path cost configuration changes.

There is no workaround.

• CSCtj30297

In a stacked or standalone switch with 32 switch virtual interfaces (SVIs), the system might reload unexpectedly during a network scan using a third-party tool. This does not happen in a switch with just one SVI.

There is no workaround.

  • CSCtj86299

If a static MAC address entry is configured for an IP address in the global routing table, ping requests are sent through the global context, and replies are sent through Virtual Routing and Forwarding (VRF). This is a VRF leak.

The workaround is to remove the static MAC address entry.

Caveats Resolved in Cisco IOS Release 12.2(55)SE

  • CSCsg28558 (Catalyst 3750-E and 3560-E)

Cisco X2-10GB-CX4 transceiver modules with a version identification number lower than V03 might be difficult to install because of a size discrepancy.

The workaround is to use modules with a version identification number of V03 or later.

  • CSCsu31853

The buffer space of a switch running TCP applications is full while the TCP sessions are in the TIME_WAIT state. Buffer space becomes available after the TCP session the closed.

There is no workaround.

• CSCsx38711 (Catalyst 3750-E switches)

When a port is configured for single host mode, and the re-authentication timer value is less than 100, if the access control server (ACS) is configured with a per-user access control list (ACL), multiple changes to the stack master might cause the display of empty access-lists for the port.

The workaround is to enter a shutdown and then a no shutdown interface configuration command on the interface.

  • CSCsz18634

On a switch running Cisco IOS release 12.2(46)SE, the output of the show interfaces privileged EXEC command shows 0 packets for port channel input and output rates.

The workaround is to reload the switch by entering the reload privileged EXEC command.

  • CSCta78468 (Catalyst 3750-E and 3560-E)

When VLAN Membership Policy Server (VMPS) is used to configure dynamic VLAN membership on a Catalyst 3750-E or 3560-E switch, hosts or PCs connected to IP phones are denied access to the network. The IP phone continues to operate correctly on the voice VLAN. This issue does not occur on Catalyst 3560 or 3750 switches.

The workaround is to manually clear the MAC addresses learned on the interface to force a new VMPS query on the next untagged packet received, which is most likely from the PC. Use the clear mac address-table dynamic interface [ interface-id ] privileged EXEC command.

• CSCtb08823 (Catalyst 3750-E and 3560-E)

SNMP requests on the stpxRSTPPortRoleTable object only return information for the stack master.

There is no workaround.

  • CSCtb12209

When port security is configured to restrict data on a port when a violation occurs, it can interfere with Spanning Tree Protocol (STP) and Link Layer Discovery Protocol (LLDP) control packets, and drop these packets, causing network instability.

The workaround is to configure port security to shut down the port when a violation occurs.

  • CSCtb58779

When a switch is low on memory (less than 256 MB), it can reload and display a SYS-2-WATCHDOG error.

There is no workaround. Enter the show memory debug leak privileged EXEC command to check for signs of a memory leak and address these symptoms.

  • CSCtc57809

Switches running Cisco IOS Release 12.2(52)SE might reload after you enter the no mac address-table static mac-address vlan vlan-id interface interface-id global configuration command if the interface is up and the MAC address was dynamically learned before it was changed to static.

Use one of these workarounds:

Clear the dynamic MAC address table when configuring static MAC addresses as in this example:

Switch(config)# no mac address-table learning vlan vlan_id
Switch(config)# clear mac-address-table dynamic address mac_address
Switch(config)# mac address-table static mac_address vlan vlan_id interface interface_id
Switch(config)# mac address-table learning vlan vlan_id
 

Downgrade to Cisco IOS Release 12.2(50)SE.

Upgrade to Cisco IOS Release 12.2(53)SE if available.

• CSCtc77969 (Catalyst 3750-E switches)

When PAgP or LACP EtherChannels are configured on a switch stack and the stack reloads, entering a show interface or show etherchannel summary privileged EXEC command when the stack comes up can cause the console to lock up.

There is no workaround.

  • CSCtd02006 (Catalyst 3750-E and 3560-E switches)

After a 10-Gigabit Ethernet interface in an X2-10GB-SR module is down and the switch is restarted, the show inventory command output shows the module as not present.

The workaround is to reinstall the X2-10GB-SR module or to restart the switch.

  • CSCtd29049 (Catalyst 3750-E and 3560-E)

A switch that has at least one trunk port configured might fail when you configure more than 950 VLANS by using the vlan vlan-id global configuration command.

There is no workaround.

• CSCtd81955

When you configure more than one EnergyWise domain in a Layer 2 broadcast domain, IP connectivity to the switch might be lost, high CPU usage might occur on the switch, and a broadcast storm might occur in the subnet.

The workaround is to configure only a single EnergyWise domain in the Layer 2 broadcast domain.

  • CSCte00827 (Catalyst 3750-E and 3560-E switches)

When a port that is configured for Switched Port Analyzer (SPAN) goes up and down, a memory leak occurs in the ‘hpm main’ process.

There is no workaround.

• CSCte14603

A vulnerability in the Internet Group Management Protocol (IGMP) version 3 implementation of Cisco IOS Software and Cisco IOS XE Software allows a remote unauthenticated attacker to cause a reload of an affected device. Repeated attempts to exploit this vulnerability could result in a sustained denial of service (DoS) condition. Cisco has released free software updates that address this vulnerability.

This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20100922-igmp.shtml .

Note: The September 22, 2010, Cisco IOS Software Security Advisory bundled publication includes six Cisco Security Advisories. Five of the advisories address vulnerabilities in Cisco IOS Software, and one advisory addresses vulnerabilities in Cisco Unified Communications Manager. Each advisory lists the releases that correct the vulnerability or vulnerabilities detailed in the advisory. The table at the following URL lists releases that correct all Cisco IOS Software vulnerabilities that have been published on September 22, 2010, or earlier:

http://www.cisco.com/warp/public/707/cisco-sa-20100922-bundle.shtml

Individual publication links are in “Cisco Event Response: Semiannual Cisco IOS Software Security Advisory Bundled Publication” at the following link:

http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep10.html

  • CSCte72365 (Catalyst 3750-E and 3560-E switches)

After a software upgrade from Cisco IOS Release 12.2(52)SE to Cisco IOS Release 12.2(53)SE, EIGRP hello packets are flooded on access ports belonging to another subnet. The same result occurs when you initiate ping requests to the broadcast address of other subnets. This results in Not on common subnet errors on the other side of the link.

The workaround is to downgrade to Cisco IOS Release 12.2(52)SE.

• CSCte94620

After you apply an ACL, these messages appear:

%IPACCESS-4-INVALIDACL: Invalid ACL field: Acl number is 0
%IPACCESS-4-INVALIDACL: Invalid ACL field: Acl type is 145
 

There is no workaround.

  • CSCtf19991

If the RADIUS authentication server is unavailable and inaccessible authentication bypass is enabled, the switch grants the client access to the network by putting the connected port in the critical-authentication state in the RADIUS-configured or the user-specified access VLAN. After the server is available, the client is not reinitalized and moved out of the critical VLAN.

There is no workaround.

  • CSCtf33948

A PC in 802.1x or multidomain authentication (MDA) mode is connected to an IP phone and connected to a MDA-enabled switch port. After the PC and phone are authenticated on the port, the PC is down. The port does not automatically reauthenticate the PC.

There is no workaround.

• CSCtf78276 (Catalyst 3750-E or 3560-E switches and the Cisco enhanced EtherSwitch service modules)

A switch running Cisco IOS Release 12.2(53)SE1 stops when IEEE 802.1x authentication is enabled.

The workaround is to apply a VLAN that the RADIUS server assigned to the switch.

  • CSCtg19894 (Catalyst 3750-E or 3560-E switches)

When the switch is running PortASIC Port Loopback in POST, the connected switch goes to the up state.

There is no workaround.

  • CSCtg26941

Multidomain authentication (MDA) with guest VLAN or MAC authentication bypass (MAB) as a fallback method is enabled on a switch running Cisco IOS Release 12.2(53)SE. When a non-802.1x client is connected to a IP phone and the phone connected to a switch port shuts down and then restarts, the client MAC address status is drop in the MAC address table. It takes 5 minutes for the client to access the network.

The workaround is to use another software release, such as Cisco IOS Release 12.2(44)SE2.

• CSCtg47738

This error message is displayed after copying a configuration file to the running configuration file fails:

%Error opening system:/running-config (No such file or directory)

The output of the dir system:/ EXEC command also does not show a running configuration file.

The workaround is to reload the switch.

  • CSCth18118 (Catalyst 3750-E)

When VTP pruning is enabled in a VTP domain, the switch in VTP server mode sends advertisements to neighboring switches. If the VTP and VLAN configuration for neighboring ports is not updated, VLANs on those ports can be pruned, causing a network traffic outage.

The workaround is to disable VTP pruning.

  • CSCth76268 (Catalyst 3750-E or 3560-E switches)

When a switch boots up using an RPS 2300 as the power source, power is not supplied to devices connected to switch PoE ports.

There is no workaround.

  • CSCth90466

Support for the Media Access Control Security (MACsec) secure connectivity association key (CAKs) rekey function is not available on the switch.

There is no workaround.

• CSCti04980

After you upgrade the switch software to Cisco IOS Release 12.2(55)SE, enhanced auto-QoS commands are generated when

auto-QoS is enabled on an interface

and

mls qos command is not enabled on the switch

If the mls qos command was already enabled on the switch, enhanced auto-QoS commands are generated only when you configure one of these commands:

auto qos classify [ police ]

auto qos trust { cos | dscp }

auto qos video { cts | ip-camera }

Cisco IOS Release 12.2(55)SE supports implicit and explicit migration to enhanced auto-QoS configurations.

Implicit migration to enhanced auto-QoS occurs on a switch running legacy auto-QoS when you configure the auto qos video , auto qos trust , or auto qos classify command on an interface. Global and interface configurations on the switch migrate to the enhanced video or trust auto-QoS configurations.

Explicit migration to enhanced auto-QoS occurs on a switch when you enable the auto qos srnd4 global configuration command. You can configure the [ no ] form of this command after you remove auto-QoS functionality from all switch interfaces.

Documentation Updates

Control Plane Protection

Updates to the Software Configuration Guide

Updates to the Catalyst 3750-E and 3560-E Cisco Software Activation and Compatibility Document

Updates to the System Message Guide

Update to the Installation Notes for Catalyst 3750-X and 3560-X Switch Power Supply Modules

Update to the Command Reference

Control Plane Protection

Catalyst 3750-X, 3750-E, 3560-X and 3560-E switches internally support up to 16 different control plane queues. Each queue is dedicated to handling specific protocol packets and is assigned a priority level. For example, STP, routed, and logged packets are sent to three different control plane queues, which are prioritized in corresponding order, with STP having the highest priority. Each queue is allocated a certain amount of processing time based on its priority. The processing-time ratio between low-level functions and high-level functions is allocated as 1-to-2. Therefore, the control plane logic dynamically adjusts the CPU utilization to handle high-level management functions as well as punted traffic (up to the maximum CPU processing capacity). Basic control plane functions, such as the CLI, are not overwhelmed by functions such logging or forwarding of packets.

Updates to the Software Configuration Guide

Information Added to the “Configuring IEEE 802.1x Port-Based Authentication” Chapter

Configuring Critical Voice VLAN

When an IP phone connected to a port is authenticated by the access control server (ACS), the phone is put into the voice domain. If the ACS is not reachable, the switch cannot determine if the device is a voice device. If the server is unavailable, the phone cannot access the voice network and therefore cannot operate.

For data traffic, you can configure inaccessible authentication bypass, or critical authentication, to allow traffic to pass through on the native VLAN when the server is not available. If the RADIUS authentication server is unavailable (down) and inaccessible authentication bypass is enabled, the switch grants the client access to the network and puts the port in the critical-authentication state in the RADIUS-configured or the user-specified access VLAN. When the switch cannot reach the configured RADIUS servers and new hosts cannot be authenticated, the switch connects those hosts to critical ports. A new host trying to connect to the critical port is moved to a user-specified access VLAN, the critical VLAN, and granted limited authentication.

With this release, you can enter the authentication event server dead action authorize voic e interface configuration command to configure the critical voice VLAN feature. When the ACS does not respond, the port goes into critical authentication mode. When traffic coming from the host is tagged with the voice VLAN, the connected device (the phone) is put in the configured voice VLAN for the port. The IP phones learn the voice VLAN identification through CDP (Cisco devices) or through LLDP or DHCP.

You can configure the voice VLAN for a port by entering the switchport voice vlan vlan-id interface configuration command.

This feature is supported in multidomain and multi-auth host modes. Although you can enter the command when the switch in single-host or multi-host mode, the command has no effect unless the device changes to multidomain or multi-auth host mode.

Beginning in privileged EXEC mode, follow these steps to configure critical voice VLAN on a port and enable the inaccessible authentication bypass feature.

 

Command
Purpose

Step 1

configure terminal

Enters global configuration mode.

Step 2

radius-server dead-criteria time time tries tries

Sets the conditions that are used to decide when a RADIUS server is considered unavailable or down ( dead) .

  • The range for time is from 1 to 120 seconds. The switch dynamically determines a default seconds value between 10 and 60 seconds.
  • The range for tries is from 1 to 100. The switch dynamically determines a default tries parameter between 10 and 100.

Step 3

radius-server deadtime minutes

(Optional) Sets the number of minutes during which a RADIUS server is not sent requests. The range is from 0 to 1440 minutes (24 hours). The default is 0 minutes.

Step 4

radius-server host ip-address [ acct-port udp-port ] [ auth-port udp-port ] [ test username name [ idle-time time ] [ ignore-acct-port ] [ ignore-auth-port ]] [ key string ]

Configures the RADIUS server parameters:

  • acct-port udp-port— Specifies the UDP port for the RADIUS accounting server. The range for the UDP port number is from 0 to 65536. The default is 1646.
  • auth-port udp-port— Specifies the UDP port for the RADIUS authentication server. The range for the UDP port number is from 0 to 65536. The default is 1645.
Note You should configure the UDP port for the RADIUS accounting server and the UDP port for the RADIUS authentication server to nondefault values.

  • test username name Enables automatic testing of the RADIUS server status, and specifies the username to be used.
  • idle-time time— Sets the interval of time in minutes after which the switch sends test packets to the server. The range is from 1 to 35791 minutes. The default is 60 minutes (1 hour).
  • ignore-acct-port Disables testing on the RADIUS-server accounting port.
  • ignore-auth-port Disables testing on the RADIUS-server authentication port.
  • For key string , specify the authentication and encryption key used between the switch and the RADIUS daemon running on the RADIUS server.
command syntax because leading spaces are ignored, but spaces within and at the end of the key are used. If you use spaces in the key, do not enclose the key in quotation marks unless the quotation marks are part of the key. This key must match the encryption used on the RADIUS daemon.

You can also configure the authentication and encryption key by using the radius-server key { 0 string | 7 string | string } global configuration command.

Step 5

interface interface-id

Specifies the port to be configured and enters interface configuration mode.

Step 6

authentication event server dead action { authorize | reinitialize } vlan vlan-id

Configures a critical VLAN to move hosts on the port if the RADIUS server is unreachable:

  • authorize—Moves any new hosts trying to authenticate to the user-specified critical VLAN.
  • reinitialize—Moves all authorized hosts on the port to the user-specified critical VLAN.

Step 7

switchport voice vlan vlan-id

Specifies the voice VLAN for the port. The voice VLAN cannot be the same as the critical data VLAN configured in Step 6.

Step 8

authentication event server dead action authorize voic e

Configures critical voice VLAN to move data traffic on the port to the voice VLAN if the RADIUS server is unreachable.

Step 9

end

Returns to privileged EXEC mode.

Step 10

show authentication interface interface-id

(Optional) Verifies your entries.

This example shows how to configure the inaccessible authentication bypass feature and configure the critical voice VLAN:

Switch(config)# radius-server dead-criteria time 30 tries 20
Switch(config)# radius-server deadtime 60
Switch(config)# radius-server host 1.1.1.2 acct-port 1550 auth-port 1560 test username user1 idle-time 30 key abc1234
Switch(config)# interface gigabitethernet 1/0/1
Switch(config)# radius-server deadtime 60
Switch(config-if)# authentication event server dead action reinitialicze vlan 20
Switch(config-if)# switchport voice vlan
Switch(config-if)# authentication event server dead action authorize voice
Switch(config-if)# end

Information added to the “Configuring IPv6 Unicast Routing” Chapter

In the “Configuring RIP for IPv6” section in the “Configuring IPv6 Unicast Routing” chapter, the task table is incorrect. This is the correct table:

Command
Purpose

Step 1

configure terminal

Enter global configuration mode.

Step 2

ipv6 router rip name

Configure an IPv6 RIP routing process, and enter router configuration mode for the process.

Step 3

maximum-paths number-paths

(Optional) Define the maximum number of equal-cost routes that IPv6 RIP can support. The range is from 1 to 32, and the default is 16 routes.

Step 4

exit

Return to global configuration mode.

Step 5

interface interface-id

Enter interface configuration mode, and specify the Layer 3 interface to configure.

Step 6

ipv6 rip name enable

Enable the specified IPv6 RIP routing process on the interface.

Step 7

ipv6 rip name default-information { only | originate }

(Optional) Originate the IPv6 default route (::/0) into the RIP routing process updates sent from the specified interface.

Note To avoid routing loops after the IPv6 default route (::/0) is originated from any interface, the routing process ignores all default routes received on any interface.

  • only —Select to originate the default route, but suppress all other routes in the updates sent on this interface.
  • originate —Select to originate the default route in addition to all other routes in the updates sent on this interface.

Step 8

end

Return to privileged EXEC mode.

Step 9

show ipv6 rip [ name ] [ database ] [ next-hops ]

or

show ipv6 route rip [ updated ]

Display information about IPv6 RIP processes.

Display the contents of the IPv6 routing table.

Step 10

copy running-config startup-config

(Optional) Save your entries in the configuration file.

Updates to the Catalyst 3750-E and 3560-E Cisco Software Activation and Compatibility Document

In Cisco IOS Release 12.2(50)SE1 and earlier, the Catalyst 3750-E and 3560-E switches support only the universal software images.

• In Cisco IOS Release 12.2(50)SE2 or later, the Catalyst 3750-E and 3560-E switches support the universal and IP base software images. In the Cisco Software Activation and Compatibility Document:

  • If your switch is running the universal software image, all the sections in the “Software Activation” section apply.
  • If your switch is running the IP base image, only the “Displaying Software License Information” in the “Software Activation” section applies.

Updates to the System Message Guide

This error message that applies to Catalyst 3750-X only, was listed with a severity level of 3 (error). It is now correctly shown with severity 4 (warning):

Error Message PLATFORM_STACKPOWER-4-REDUNDANCY_LOSS: Switch [dec]...[dec] power stack lost redundancy and is now operating in power sharing mode

New System Messages

Error Message AUTHMGR-5-SECURITY_VIOLATION: Security violation on the interface [chars], new MAC address ([enet) is seen. AuditSessionID [chars]

Explanation A host on the interface attempted to gain access to the network or attempted an authentication. The interface mode does not support the number of hosts that are attached to the interface. This is a security violation, and the interface has been error-disabled. The first [chars] is the interface, [enet] is the Ethernet address of the host, and the second [chars] is the session ID.

Recommended Action Make sure that the interface is configured to support the number of hosts that are attached to it. Enter the shutdown interface configuration command followed by no shutdown interface configuration command to restart the interface.

Error Message AUTHMGR-5-VLANASSIGN: VLAN [dec] assigned to Interface [chars] AuditSessionID [chars]

Explanation A VLAN was assigned. [dec] is the VLAN ID, the first [chars] is the interface, and the second [chars] is the session ID.

Recommended Action No action is required.

Error Message AUTHMGR-7-FAILOVER: Failing over from [chars] for client ([chars]) on Interface [chars] AuditSessionID [chars]

Explanation The authorization manager is failing over from the current authentication method to another method. The first [chars] is the current authentication method, the second [chars] is the client ID, the third [chars] is the interface, and the fourth [chars] is the session ID.

Recommended Action No action is required.

Error Message AUTHMGR-7-NOMOREMETHODS: Exhausted all authentication methods for client ([chars]) on Interface [chars] AuditSessionID [chars]

Explanation All available authentication methods have been tried for the client, but authentication has failed. The first [chars] is the client ID, the second [chars] is the interface, and the third [chars] is the session ID.

Recommended Action No action is required. If local authorization has been configured, the port will be authorized based on the local authorization method. Otherwise, authentication will restart according to the configured reauthentication period.

Error Message AUTHMGR-7-RESULT: Authentication result [chars] from [chars] for client [chars] on Interface [chars] AuditSessionID [chars]

Explanation The results of the authentication. The first [chars] is the status of the authentication, the second [chars] is the authentication method, the third [chars] is the client ID, the fourth [chars] is the interface, and the fifth [chars] is the session ID.

Recommended Action No action is required.

Error Message EPM-6-AUTH_ACL: POLICY [chars]| EVENT [chars]

Explanation The switch has sent or received a download request for a downloadable ACL (dACL). The first [chars] is the dACL policy? The second [chars] is the event.

Recommended Action No action is required.

Error Message HARDWARE-3-ASICNUM_ERROR: [traceback] Port-ASIC number [dec] is invalid

Explanation The port ASIC number is invalid. [dec] is the port ASIC number.

Recommended Action Copy the message exactly as it appears on the console or in the system log. Research and attempt to resolve the error by using the Output Interpreter. Use the Bug Toolkit to look for similar reported problems. If you still require assistance, open a case with the TAC, or contact your Cisco technical support representative, and provide the representative with the gathered information.

Error Message HARDWARE-3-PORTNUM_ERROR: [traceback] port number [dec] is invalid

Explanation The port number is out of range. [dec] is the port number.

Recommended Action Copy the message exactly as it appears on the console or in the system log. Research and attempt to resolve the error by using the Output Interpreter. Use the Bug Toolkit to look for similar reported problems. If you still require assistance, open a case with the TAC, or contact your Cisco technical support representative, and provide the representative with the gathered information.

Error Message HULC_LICENSE-1-LICENSE_REGISTER_FAILED: [chars] - rc = [dec]

Explanation The licensing initialization failed. [chars] explains what part of the license registration failed, and [dec] is the type of license initialization error.

Recommended Action Copy the message exactly as it appears on the console or in the system log. Research and attempt to resolve the error by using the Output Interpreter. Use the Bug Toolkit to look for similar reported problems. If you still require assistance, open a case with the TAC, or contact your Cisco technical support representative, and provide the representative with the gathered information.

Error Message IFMGR-3-IFINDEX_PERSIST_ENTRY_CORRUPT: [chars] seems to be corrupted. Trying to read [dec] size

Explanation The ifIndex table is corrupted. [chars] is the path to the IfIndex file, and [dec] is the number of bytes that was being read from the ifIndex table when the corruption was detected.

Recommended Action Delete the ifindex table.

Error Message IFMGR-3-INVALID_PERSISTENT_DATA: Invalid persistent data

Explanation The interface manager attempts to write invalid persistent data.

Recommended Action Copy the message exactly as it appears on the console or in the system log. Research and attempt to resolve the error by using the Output Interpreter. Use the Bug Toolkit to look for similar reported problems. If you still require assistance, open a case with the TAC, or contact your Cisco technical support representative, and provide the representative with the gathered information.

Error Message ILET-1-AUTHENTICATION_FAIL: This Switch may not have been manufactured by Cisco or with Cisco’s authorization. This product may contain software that was copied in violation of Cisco’s license terms. If your use of this product is the cause of a support issue, Cisco may deny operation of the product, support under your warranty or under a Cisco technical support program such as Smartnet. Please contact Cisco’s Technical Assistance Center for more information.

Explanation A license authentication failure occurred for the switch.

Recommended Action Contact your Cisco sales representative for assistance.

Error Message ILET-1-DEVICE_AUTHENTICATION_FAIL: The [chars] inserted in this switch may not have been manufactured by Cisco or with Cisco's authorization. If your use of this product is the cause of a support issue, Cisco may deny operation of the product, support under your warranty or under a Cisco technical support program such as Smartnet. Please contact Cisco's Technical Assistance Center for more information.

Explanation A license authentication failure occurred for a component that was inserted in the switch. [chars] is the component.

Recommended Action Contact your Cisco sales representative for assistance.

Error Message PLATFORM-4-FRULINK_UNSUPPORTED: Unsupported [chars] module inserted [chars]. Remove the unsupported module and insert a supported FRULink module.

Note This message applies only to the Catalyst 3750-X and 3560-X switches.


Explanation The switch has detected an unsupported field replaceable unit (FRU). The first [chars] is the unsupported FRU. The second [chars] is the slot.

Recommended Action Replace the unsupported FRU with a supported one.

Error Message POWERNET_ISSU-4-SM_EW_DOMAIN_MISMATCH: Energywise domain of EtherSwitch is [chars], recommended to have [chars].

Note This message applies only to the Catalyst 3750-X and 3560-X switches.


Explanation The EnergyWise domain of the service module does not match that of the switch. The first [chars] is the EnergyWise domain of the service module. The second [chars] is the EnergyWise domain of the router.

Recommended Action Configure the EnergyWise domain of the service module to match that of the switch. If the message recurs, copy the message exactly as it appears on the console or in the system log. Research and attempt to resolve the error by using the Output Interpreter. Use the Bug Toolkit to look for similar reported problems. If you still require assistance, open a case with the TAC, or contact your Cisco technical support representative, and provide the representative with the gathered information.

Error Message SCHED-3-UNEXPECTEDEVENT: [traceback] [process information] Process received unknown event (maj [hex], min [hex])

Explanation A process did not handle an event. The first [hex] is the major event number, and the second [hex] is the minor event number, both of which allow you to identify the event that occurred.

Recommended Action Copy the message exactly as it appears on the console or in the system log. Research and attempt to resolve the error by using the Output Interpreter. Use the Bug Toolkit to look for similar reported problems. If you still require assistance, open a case with the TAC, or contact your Cisco technical support representative, and provide the representative with the gathered information.

Modified System Messages

Error Message DOT1X-5-RESULT_OVERRIDE: Authentication result overridden for client ([chars]) on Interface [chars] AuditSessionID [chars]

Explanation The authentication result was overridden. The first [chars] is the client ID, the second [chars] is the interface, and the third [chars] is the session ID.

Recommended Action No action is required.

Error Message DOT1X_SWITCH-5-ERR_INVALID_PRIMARY_VLAN: Attempt to assign primary VLAN [dec] to 802.1x port [chars] AuditSessionID [chars]

Explanation An attempt was made to assign a primary VLAN to an 802.1x port, which is not allowed. [dec] is the VLAN, the first [chars] is the port, and the second [chars] is the session ID.

Recommended Action Use a different VLAN.


Note This message applies to switches running the IP base image.


Error Message DOT1X_SWITCH-5-ERR_INVALID_SEC_VLAN: Attempt to assign invalid secondary VLAN [dec] to PVLAN host 802.1x port [chars] AuditSessionID [chars]

Explanation An attempt was made to assign a nonsecondary VLAN to a private VLAN host 802.1x port. [dec] is the VLAN, the first [chars] is the port, and the second [chars] is the session ID.

Recommended Action Change the port mode so that it is no longer a PVLAN host port, or use a valid secondary VLAN.


Note This message applies to switches running the IP base image.


Error Message DOT1X_SWITCH-5-ERR_PRIMARY_VLAN_NOT_FOUND: Attempt to assign VLAN [dec], whose primary VLAN does not exist or is shutdown, to 802.1x port [chars] AuditSessionID [chars]

Explanation An attempt was made to assign a private VLAN whose primary VLAN does not exist or is shut down. [dec] is the VLAN, the first [chars] is the port, and the second [chars] is the session ID.

Recommended Action Make sure that the primary VLAN exists and is not shut down. Verify that the private VLAN is associated with a primary VLAN.


Note This message applies to switches running the IP base image.


Error Message DOT1X_SWITCH-5-ERR_SEC_VLAN_INVALID: Attempt to assign secondary VLAN [dec] to non-PVLAN host 802.1x port [chars] AuditSessionID [chars]

Explanation An attempt was made to assign a secondary VLAN to a port that is not a private VLAN host port, which is not allowed. [dec] is the VLAN, the first [chars] is the port, and the second [chars] is the session ID.

Recommended Action Change the port mode so that it is configured as a private VLAN host port, or use a different VLAN that is not configured as a secondary VLAN.

Error Message DOT1X_SWITCH-5-ERR_SPAN_DST_PORT: Attempt to assign VLAN [dec] to 802.1x port [chars], which is configured as a SPAN destination AuditSessionID [chars]

Explanation An attempt was made to assign a VLAN to an 802.1x port that is configured as a Switched Port Analyzer (SPAN) destination port. [dec] is the VLAN, the first [chars] is the port, and the second [chars] is the session ID.

Recommended Action Change the SPAN configuration so that the port is no longer a SPAN destination port, or change the configuration so that no VLAN is assigned.

Error Message DOT1X_SWITCH-5-ERR_SPAN_DST_PORT: Attempt to assign VLAN [dec] to 802.1x port [chars], which is configured as a SPAN destination AuditSessionID [chars]

Explanation An attempt was made to assign a VLAN to an 802.1x port that is configured as a Switched Port Analyzer (SPAN) destination port. [dec] is the VLAN, the first [chars] is the port, and the second [chars] is the session ID.

Recommended Action Change the SPAN configuration so that the port is no longer a SPAN destination port, or change the configuration so that no VLAN is assigned.

Error Message DOT1X_SWITCH-5-ERR_VLAN_EQ_VVLAN: Data VLAN [dec] on port [chars] cannot be equivalent to the Voice VLAN AuditSessionID [chars]

Explanation An attempt was made to assign a data VLAN to an 802.1x port that is the same as the voice VLAN. [dec] is the VLAN, the first [chars] is the port, and the second [chars] is the session ID.

Recommended Action Change either the voice VLAN or the 802.1x-assigned VLAN on the interface so that they are not the same.

Error Message DOT1X_SWITCH-5-ERR_VLAN_INTERNAL: Attempt to assign internal VLAN [dec] to 802.1x port [chars] AuditSessionID [chars]

Explanation An attempt was made to assign an invalid VLAN to an 802.1x port. The VLAN specified is used internally and cannot be assigned to this port. [dec] is the VLAN, the first [chars] is the port, and the second [chars] is the session ID.

Recommended Action Assign a different VLAN.

Error Message DOT1X_SWITCH-5-ERR_VLAN_INVALID: Attempt to assign invalid VLAN [dec] to 802.1x port [chars] AuditSessionID [chars]

Explanation An attempt was made to assign an invalid VLAN to an 802.1x port. The VLAN specified is out of range. [dec] is the VLAN, the first [chars] is the port, and the second [chars] is the session ID.

Recommended Action Update the configuration to use a valid VLAN.

Error Message DOT1X_SWITCH-5-ERR_VLAN_NOT_FOUND: Attempt to assign non-existent or shutdown VLAN [chars] to 802.1x port [chars] AuditSessionID [chars]

Explanation An attempt was made to assign a VLAN to an 802.1x port, but the VLAN was not found in the VLAN Trunking Protocol (VTP) database. [dec] is the VLAN, the first [chars] is the port, and the second [chars] is the session ID.

Recommended Action Make sure the VLAN exists and is not shut down, or use another VLAN.

Error Message DOT1X_SWITCH-5-ERR_VLAN_ON_ROUTED_PORT: Attempt to assign VLAN [dec] to routed 802.1x port [chars] AuditSessionID [chars]

Explanation An attempt was made to assign a VLAN to a supplicant on a routed port, which is not allowed. [dec] is the VLAN ID, the first [chars] is the port, and the second [chars] is the session ID.

Recommended Action Either disable the VLAN assignment, or change the port type to a nonrouted port.

Error Message DOT1X_SWITCH-5-ERR_VLAN_PROMISC_PORT: Attempt to assign VLAN [dec] to promiscuous 802.1x port [chars] AuditSessionID [chars]

Explanation An attempt was made to assign a VLAN to a promiscuous IEEE 802.1x port, which is not allowed. [dec] is the VLAN, the first [chars] is the port, and the second [chars] is the session ID.

Recommended Action Change the port mode so that it is no longer a promiscuous port, or change the configuration so that no VLAN is assigned.

Error Message DOT1X_SWITCH-5-ERR_VLAN_RESERVED: Attempt to assign reserved VLAN [dec] to 802.1x port [chars] AuditSessionID [chars]

Explanation An attempt was made to assign an invalid VLAN to an IEEE 802.1x port. The VLAN specified is a reserved VLAN and cannot be assigned to this port. [dec] is the VLAN, the first [chars] is the port, and the seconds [chars] is the session ID.

Recommended Action Assign a different VLAN.

Error Message DOT1X_SWITCH-5-ERR_VLAN_RSPAN: Attempt to assign RSPAN VLAN [dec] to 802.1x port [chars]. 802.1x is incompatible with RSPAN AuditSessionID [chars]

Explanation Remote SPAN should not be enabled on a VLAN with IEEE 802.1x-enabled. [dec] is the VLAN, the first [chars] is the port, and the second [chars] is the session ID.

Recommended Action Either disable remote SPAN configuration on the VLAN, or disable IEEE 802.1x on all the ports in this VLAN.

Error Message PLATFORM_ENV-6-FRU_PS_OIR: FRU Power Supply [dec] [chars].

Explanation A power supply is inserted or removed. [dec] is the power supply. [chars] is the power supply status that can be either inserted, removed , powered on , or powered off .

Recommended Action No action is required.

Error Message SPANTREE-2-BLOCK_BPDUGUARD_VP: Received BPDU on port [chars], vlan [dec] with BPDU Guard enabled. Disabling vlan.

Explanation A BPDU was received on the interface and the VLAN specified in the error message. The spanning tree BPDU guard feature was enabled and configured to shut down the VLAN. As a result, the VLAN was placed in the error-disabled state. [chars] is the interface, and [dec] is the VLAN.

Recommended Action Either remove the device sending BPDUs, or disable the BPDU guard feature. The BPDU guard feature can be locally configured on the interface or globally configured on all ports that have Port Fast enabled. Re-enable the interface and vlan by entering the clear errdisable privileged EXEC command.

Update to the Installation Notes for Catalyst 3750-X and 3560-X Switch Power Supply Modules

Installation Guidelines Change

The power supply is hot-swappable. In some configurations, such as full POE+ or power sharing mode, removing a power supply causes the switch to shut down powered devices until the power budget matches the input power of a single power supply. To minimize network interruption, hot swap the power supply under these circumstances:

  • The switch is connected to an XPS-2200 and sufficient power is available.
  • The switch is in StackPower mode and sufficient power is available (Catalyst 3750-X only).
  • The switch is powered by other switches in a power stack, and no active backup is in progress.

Update to the Catalyst 3750-E and 3560-E Getting Started Guides

The warranty section in the Catalyst 3750-E Switch Getting Started Guide and the Catalyst 3560-E Switch Getting Started Guide has changed. These are the updated sections.

Catalyst 3750-E Switch Getting Started Guide

Catalyst 3750-E switches are covered by the Cisco Limited Lifetime Hardware Warranty. For more information, see this document on Cisco.com:
http://www.cisco.com/en/US/docs/general/warranty/English/LH2DEN__.html


Note If you purchased your Catalyst 3750-E switch before May 1, 2009, your switch is covered by the Cisco 90-Day Limited Hardware Warranty. For more information, see this document on Cisco.com:
http://www.cisco.com/en/US/docs/general/warranty/English//901DEN__.html


Catalyst 3560-E Switch Getting Started Guide

Catalyst 3560-E switches are covered by the Cisco Limited Lifetime Hardware Warranty. For more information, see this document on Cisco.com:
http://www.cisco.com/en/US/docs/general/warranty/English/LH2DEN__.html


Note If you purchased your Catalyst 3560-E switch before May 1, 2009, your switch is covered by the Cisco 90-Day Limited Hardware Warranty. For more information, see this document on Cisco.com:
http://www.cisco.com/en/US/docs/general/warranty/English//901DEN__.html


Update to the Command Reference

Catalyst 3750-E and 3560-E Switch Bootloader Commands

In the "Catalyst 3750-E and 3560-E Switch Bootloader Commands" appendix, this information is incorrect:

You can access the boot loader through a switch console connection at 9600 b/s. Unplug the switch power cord, and press the switch Mode button while reconnecting the power cord. You can release the Mode button a second or two after the LED above port 1X goes off. You should then see the boot loader Switch: prompt. The boot loader performs low-level CPU initialization, performs POST, and loads a default operating system image into memory.

This is the correct information:

You can access the boot loader through a switch console connection at 9600 b/s. Unplug the power cord, and press the switch Mode button while plugging in the cord. Release the Mode button when all the LEDs turn off. The switch: prompt appears. The boot loader performs low-level CPU initialization, performs POST, and loads a default operating system image into memory.

Related Documentation

Documents with complete information about the switch are available from these Cisco.com sites:

Catalyst 3750-X
http://www.cisco.com/en/US/products/ps10745/tsd_products_support_series_home.html

Catalyst 3560-X
http://www.cisco.com/en/US/products/ps10744/tsd_products_support_series_home.html

Catalyst 3750-E
http://www.cisco.com/en/US/products/ps7077/tsd_products_support_series_home.html

Catalyst 3560-E
http://www.cisco.com/en/US/products/ps7078/tsd_products_support_series_home.html

These documents provide complete information about the switches:

  • Release Notes for the Catalyst 3750-X. Catalyst 3750-E, Catalyst 3560-X, and 3560-E Switches
  • Catalyst 3750-X and 3560-X Switch Software Configuration Guide
  • Catalyst 3750-X and 3560-X Switch Command Reference
  • Catalyst 3750-X, 3750-E, 3560-X, and 3560-E Switch System Message Guide
  • Cisco IOS Software Installation Document.
  • Catalyst 3750-X and 3560-X Switch Getting Started Guide
  • Catalyst 3750-X and 3560-X Switch Hardware Installation Guide
  • Regulatory Compliance and Safety Information for the Catalyst 3750-X and 3560-X Switch
  • Installation Notes for the Catalyst 3750-X and 3560-X Switch Power Supply Modules
  • Installation Notes for the Catalyst 3750-X and 3560-X Switch Fan Module
  • Installation Notes for the Catalyst 3750-X and 3560-X Switch Network Modules
  • Catalyst 3750-E and Catalyst 3560-E Switch Software Configuration Guide
  • Catalyst 3750-E and Catalyst 3560-E Switch Command Reference
  • Cisco Software Activation and Compatibility Document
  • Auto Smartports Configuration Guide
  • Cisco EnergyWise Configuration Guide
  • Catalyst 3750-E Switch Getting Started Guide
  • Catalyst 3560-E Switch Getting Started Guide
  • Catalyst 3750-E and Catalyst 3560-E Switch Hardware Installation Guide
  • Regulatory Compliance and Safety Information for the Catalyst 3750-E and Catalyst 3560-E Switch
  • Installation Notes for the Catalyst 3750-E, Catalyst 3560-E Switches, and RPS 2300 Power Supply Modules
  • Installation Notes for the Catalyst 3750-E and Catalyst 3560-E Switch Fan Module
  • Installation Notes for the Cisco TwinGig Converter Module
  • Cisco Redundant Power System 2300 Hardware Installation Guide
  • Cisco Redundant Power System 2300 Compatibility Matrix
  • Information about Cisco SFP, SFP+, and GBIC modules is available from this Cisco.com site:
    http://www.cisco.com/en/US/products/hw/modules/ps5455/prod_installation_guides_list.html

SFP compatibility matrix documents are available from this Cisco.com site:
http://www.cisco.com/en/US/products/hw/modules/ps5455/products_device_support_tables_list.html

For other information about related products, see these documents:

  • Getting Started with Cisco Network Assistant
  • Release Notes for Cisco Network Assistant
  • Network Admission Control Software Configuration Guide

These documents have information about the Cisco enhanced EtherSwitch service modules:

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What’s New in Cisco Product Documentation , which also lists all new and revised Cisco technical documentation:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

Subscribe to the What’s New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS version 2.0.