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Cisco Catalyst 3750-E Series Switches

Release Notes for the Catalyst 3750-E and Catalyst 3560-E Switches, Cisco IOS Release 12.2(50)SE and Later

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Release Notes for Catalyst 3750-E and Catalyst 3560-E Switches, Cisco IOS Release 12.2(50)SE and Later

Table Of Contents

Release Notes for Catalyst 3750-E and Catalyst 3560-E Switches, Cisco IOS Release 12.2(50)SE and Later

Contents

System Requirements

Hardware Supported

Device Manager System Requirements

Hardware Requirements

Software Requirements

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 Features

New Hardware Features

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 X2 Transceiver Modules and SFP Modules

Configuration

EtherChannel

IEEE 802.1x Authentication

Multicasting

PoE

QoS

Routing

SPAN and RSPAN

VLANs

Stacking (only Catalyst 3750-E Switch Stack)

Device Manager Limitations

Important Notes

Switch Stack Notes

Cisco IOS Notes

Device Manager Notes

Open Caveats

Resolved Caveats

Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE5

Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE4

Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE3

Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE1

Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE

Documentation Updates

Updates to the Cisco Software Activation and Compatibility Document

Updates to the Software Configuration Guide

Updates to the Command Reference

debug authentication

Updates to the System Message Guide

New System Messages

Deleted System Messages

Update to the Getting Started Guides

Related Documentation

Obtaining Documentation and Submitting a Service Request


Release Notes for Catalyst 3750-E and Catalyst 3560-E Switches, Cisco IOS Release 12.2(50)SE and Later


Revised October 21, 2010

Cisco IOS Release 12.2(50)SE and later runs on all Catalyst 3750-E and Catalyst 3560-E switches.

The Catalyst 3750-E switches support stacking through Cisco StackWise Plus technology. The Catalyst 3560-E switches do not support switch stacking. Unless otherwise noted, the term switch refers to a standalone switch and to a switch stack.

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)SE2and later, the Catalyst 3750-E and 3560-E switches support the universal and IP base software images.

For more information, see the Deciding Which Files to Use and the "Documentation Updates" section.

These release notes include important information about Cisco IOS Release 12.2(50)SE and any limitations, restrictions, and caveats that apply to it. Verify that these release notes are correct for your switch:

If you are installing a new switch, see the Cisco IOS release label on the rear panel of your switch.

If your switch is on, use the show version privileged EXEC command. See the "Finding the Software Version and Feature Set" section.

If you are upgrading to a new release, see the software upgrade filename for the software version. See the "Deciding Which Files to Use" section.

You can download the switch software from this site (registered Cisco.com users with a login password):

http://tools.cisco.com/support/downloads/go/MDFTree.x?butype=switches

This software release is part of a special release of Cisco IOS software that is not released on the same maintenance cycle that is used for other platforms. As maintenance releases and future software releases become available, they will be posted to Cisco.com in the Cisco IOS software area.

For the complete list of Catalyst 3750-E and Catalyst 3560-E switch documentation, see the "Related Documentation" section.

Contents

This information is in the release notes:

"System Requirements" section

"Upgrading the Switch Software" section

"Installation Notes" section

"New Features" section

"Minimum Cisco IOS Release for Major Features" section

"Limitations and Restrictions" section

"Important Notes" section

"Open Caveats" section

"Resolved Caveats" section

"Documentation Updates" section

"Related Documentation" section

"Obtaining Documentation and Submitting a Service Request" section

System Requirements

The system requirements are described in these sections:

"Hardware Supported" section

"Device Manager System Requirements" section

"Cluster Compatibility" section

"CNA Compatibility" section

Hardware Supported

Table 1 lists the hardware supported on this release.

Table 1 Catalyst 3750-E and Catalyst 3560-E Switches 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 PoE1 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 SFP2 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
CWDM3

Cisco IOS Release 12.2(35)SE2







Cisco IOS Release 12.2(50)SE

DOM4 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 cable5

CAB-SFP-50CM

Cisco IOS Release 12.2(35)SE2

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

1 PoE = Power over Ethernet.

2 SFP = small form-factor pluggable

3 CWDM = coarse wavelength-division multiplexer

4 DOM = digital optical monitoring

5 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.


Device Manager System Requirements

These sections describe the hardware and software requirements for using the device manager:

"Hardware Requirements" section

"Software Requirements" section

Hardware Requirements

Table 2 lists the minimum hardware requirements for running the device manager.

Table 2 Minimum Hardware Requirements 

Processor Speed
DRAM
Number of Colors
Resolution
Font Size

233 MHz minimum1

512 MB2

256

1024 x 768

Small

1 We recommend 1 GHz.

2 We recommend 1 GB DRAM.


Software Requirements

These are the supported operating systems and browsers for the device manager:

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-E switch, all standby command switches must be Catalyst 3750-E switches.

For additional information about clustering, see Getting Started with Cisco Network Assistant and Release Notes for Cisco Network Assistant (not orderable but available on Cisco.com), the software configuration guide, and the command reference.

CNA Compatibility

Cisco IOS 12.2(35)SE2 and later is only compatible with Cisco Network Assistant 5.0 and later. You can download 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

These are the procedures for downloading software. Before downloading software, read this section for important information:

"Finding the Software Version and Feature Set" section

"Deciding Which Files to Use" section

"Upgrading a Switch by Using the Device Manager or Network Assistant" section

"Upgrading a Switch by Using the CLI" section

"Recovering from a Software Failure" section

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

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.

Table 3 lists the filenames for this software release.

Table 3 Cisco IOS Software Image Files  

Filename

Description

c3750e-ipbase-tar.122-50.SE4.tar1

Catalyst 3750-E IP base image and device manager files. This image has Layer 2+ and basic Layer 3 routing features.

c3750e-universal-tar.122-50.SE4.tar

Catalyst 3750-E universal image and device manager files. This image has all the supported features that are enabled by the installed software license.

c3750e-ipbasek9-tar.122-50.SE4.tar1

Catalyst 3750-E IP base cryptographic image and device manager files. This image has the Kerberos, SSH, SSL, Layer 2+, and basic Layer 3 routing features.

c3750e-universalk9-tar.122-50.SE4.tar

Catalyst 3750-E universal cryptographic image and device manager files. This image has the Kerberos, SSH, SSL, SNMPv3, and supported universal image features.

c3560e-ipbase-tar.122-50.SE4.tar1

Catalyst 3560-E IP base image and device manager files. This image has Layer 2+ and basic Layer 3 routing features.

c3560e-universal-tar.122-50.SE4.tar

Catalyst 3560-E universal image and device manager files. This image has all the supported features that are enabled by the installed software license.

c3560e-ipbasek9-tar.122-50.SE4.tar1

Catalyst 3560-E IP base cryptographic image and device manager files. This image has the Kerberos, SSH, SSL, Layer 2+, and basic Layer 3 routing features.

c3560e-universalk9-tar.122-50.SE4.tar

Catalyst 3560-E universal cryptographic image and device manager files. This image has the Kerberos, SSH, SSL, and SNMPv3, and supported universal image features.

1 These images are available only for Cisco IOS Release 12.2(50)SE3 and later.


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 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

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/products/sw/iosswrel/ps5187/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, at this URL:

http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_command_reference_book09186a00800811e0.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 3 to identify the file that you want to download.

Step 2 Download the software image file. If you have a SmartNet support contract, go to this URL, and log in to download the appropriate files:

http://www.cisco.com/kobayashi/sw-center/sw-lan.shtml

To download the universal software image files for a Catalyst 3750-E switch, click Catalyst 3750-E software. To obtain authorization and to download the cryptographic software files, click Catalyst 3750-E 3DES Cryptographic Software.

To download the universal software image files for a Catalyst 3560-E switch, click Catalyst 3560-E software. To obtain authorization and to download the cryptographic software files, click Catalyst 3560-E 3DES Cryptographic Software.

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/c3750e-universal-tar.122-50.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 additional recovery procedures, see the "Troubleshooting" chapter in the software configuration guide for this release.

Installation Notes

You can assign IP information to your switch by using these methods:

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 Features

These sections describe the new supported hardware and the new and updated software features provided in this release:

"New Hardware Features" section

"New Software Features" section

New Hardware Features

For a list of all supported hardware, see the "Hardware Supported" section.

New Software Features

These are the new software features for this release:

Network Edge Access Topology (NEAT) with 802.1X switch supplicant, host authorization with CISP, and auto enablement to authenticate a switch outside a wiring closet as a supplicant to another switch.

The command `ip tcp adjust-mss' is not supported on the 3560G platform.

IEEE 802.1x with open access to allow a host to access the network before being authenticated.

IEEE 802.1x authentication with downloadable ACLs and redirect URLs to allow per-user ACL downloads from a Cisco Secure ACS server to an authenticated switch.

Flexible-authentication sequencing to configure the order of the authentication methods that a port tries when authenticating a new host.

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

Cisco EnergyWise manages the energy usage of power over Ethernet (PoE) entities.

Wired location service sends location and attachment tracking information for connected devices to a Cisco Mobility Services Engine (MSE).

Intermediate System-to-Intermediate System (IS-IS) routing supports dynamic routing protocols for Connectionless Network Service (CLNS) networks.

Stack troubleshooting enhancements.

CPU utilization threshold trap monitors CPU utilization.

Support for the Cisco IOS Configuration Engine, previously referred to as the Cisco IOS CNS agent.

Support for Embedded Event Manager Version 2.4.

LLDP-MED network-policy profile time, length, value (TLV) for creating a profile for voice and voice-signalling by specifying the values for VLAN, class of service (CoS), differentiated services code point (DSCP), and tagging mode.

RADIUS server load balancing to allow access and authentication requests to be distributed evenly across a server group.

Auto Smartports Cisco-default and user-defined macros for dynamic port configuration based on the device type detected on the port.

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

These IPv6 features are now supported in the IP services software license and IP base image:

Feature
Releases Earlier Than Cisco IOS Release 12.2(50)SE
Cisco IOS Release 12.2(50)SE and Later

Access control lists (ACLs)

Advanced IP services

IP base

DHCP for IPv6 (DHCPv6) for the DCHP server, client, and relay device

Advanced IP services

IP base

Enhanced Interior Gateway Routing Protocol for IPv6 (EIGRPv6)

Advanced IP services

IP services

Hot Standby Router Protocol for IPv6 (HSRPv6)

Advanced IP services

IP services

Open Shortest Path First Version 3 (OSPFv3)

Advanced IP services

IP services

Routing Information Protocol (RIP)

Advanced IP services

IP base

Static routes

Advanced IP services

IP base


The advanced IP services software license is now end-of-sale (EOS) and end-of-life (EOL). For more information, see http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps7077/eol_c51_519629.html

Minimum Cisco IOS Release for Major Features

Table 4 lists the minimum software release (after the first release) required to support the major features of the Catalyst 3750-E and Catalyst 3560-E switches. Features not listed are supported in all releases.

Table 4 Features Introduced After the First Release and the Minimum Cisco IOS Release Required 

Feature
Minimum Cisco IOS Release Required
Catalyst Switch Support

Network Edge Access Topology (NEAT) with 802.1X switch supplicant, host authorization with CISP, and auto enablement to authenticate a switch outside a wiring closet as a supplicant to another switch

12.2(50)SE

3750-E, 3560-E

IEEE 802.1x with open access to allow a host to access the network before being authenticated

12.2(50)SE

3750-E, 3560-E

IEEE 802.1x authentication with downloadable ACLs and redirect URLs to allow per-user ACL downloads from a Cisco Secure ACS server to an authenticated switch

12.2(50)SE

3750-E, 3560-E

Flexible-authentication sequencing to configure the order of the authentication methods that a port tries when authenticating a new host

12.2(50)SE

3750-E, 3560-E

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

12.2(50)SE

3750-E, 3560-E

Cisco EnergyWise manages the energy usage of power over Ethernet (PoE) entities

12.2(50)SE

3750-E, 3560-E

Wired location service sends location and attachment tracking information for connected devices to a Cisco Mobility Services Engine (MSE)

12.2(50)SE

3750-E, 3560-E

Intermediate System-to-Intermediate System (IS-IS) routing supports dynamic routing protocols 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 referred to as the Cisco IOS CNS agent

12.2(50)SE

3750-E, 3560-E

Support for Embedded Event Manager Version 2.4

12.2(50)SE

3750-E, 3560-E

LLDP-MED network-policy profile time, length, value (TLV) for creating a profile for voice and voice-signalling by specifying the values for VLAN, class of service (CoS), differentiated services code point (DSCP), and tagging mode

12.2(50)SE

3750-E, 3560-E

RADIUS server load balancing to allow access and authentication requests to be distributed evenly across a server group

12.2(50)SE

3750-E, 3560-E

Auto Smartports Cisco-default and user-defined macros for dynamic port configuration based on the device type detected on the port

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

These IPv6 features are now 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(46)SE

3750-E, 3560-E

Voice aware IEEE 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 up or down calculation

12.2(46)SE

3750-E, 3560-E

Support for 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

Support for rehosting a software license and for 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 (requires the 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

Simple Network and Management Protocol (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


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.

This section contains these limitations:

"Cisco IOS Limitations" section

"Device Manager Limitations" section

Cisco IOS Limitations

Unless otherwise noted, these limitations apply to the Catalyst 3750-E and 3560-E switches:

"Access Control List" section

"Address Resolution Protocol" section

"Cisco Redundant Power System 2300" section

"Cisco X2 Transceiver Modules and SFP Modules" section

"Configuration" section

"EtherChannel" section

"IEEE 802.1x Authentication" section

"Multicasting" section

"PoE" section

"QoS" section

"Routing" section

"SPAN and RSPAN" section

"Stacking (only Catalyst 3750-E Switch Stack)" section

Access Control List

These are the access control list (ACL) limitations:

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

This is an Address Resolution Protocol limitation:

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

This is the Cisco Redundant Power System (RPS) 2300 limitation:

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 X2 Transceiver Modules and SFP Modules

These are the Cisco X2 transceiver module and SFP module limitations:

Cisco X2-10GB-CX4 transceiver modules with a version identification number lower than V03 might be difficult to insert because of a dimensional tolerance discrepancy. The workaround is to use modules with a version identification number of V03 or later. (CSCsg28558)

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)

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

These are the configuration limitations:

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-E 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)

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-E switches)

EtherChannel

These are the EtherChannel limitations:

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

These are the IEEE 802.1x authentication limitations:

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

These are the multicasting limitations:

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

These are the power-over-Ethernet (PoE) limitations:

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)

QoS

These are the quality of service (QoS) limitations:

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-E switches)

Routing

These are the routing limitations:

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)

SPAN and RSPAN

This is the SPAN and Remote SPAN (RSPAN) limitation.

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)

The far-end fault optional facility is not supported on the GLC-GE-100FX SFP module.

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

VLANs

These are the VLAN limitations:

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)

Stacking (only Catalyst 3750-E Switch Stack)

These are the Catalyst 3750-E switch stack limitations:

Where there is a mixed hardware stack with 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-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-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-E switches, when the stack reloads, the 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)

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)

Device Manager Limitations

This is the device manager limitation:

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

These sections describe the important notes related to this software release for the Catalyst 3750-E and 3560-E switches:

"Switch Stack Notes" section

"Cisco IOS Notes" section

"Device Manager Notes" section

Switch Stack Notes

These notes apply to switch stacks:

Always power off a switch before adding or removing it from a switch stack.

The 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

These notes apply to Cisco IOS software:

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 to Cisco IOS Release 12.2(40)SE (or later), 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

These notes apply to the device manager:

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

This section describes the open caveats with possible unexpected activity in this software release. Unless otherwise noted, these severity 3 Cisco IOS configuration caveats apply to the Catalyst 3750-E and 3560-E switches:

CSCsk96058 (Catalyst 3750-E switches)

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
 
   

CSCsl02680

When the configuration file is removed from the switch and the switch is rebooted, port status for VLAN 1 and the management port (Fast Ethernet 0) is sometimes reported as up and sometimes as down, resulting in conflicts. This status depends on when you respond to the reboot query:

Would you like to enter the initial configuration dialog?

After a reboot if you wait until the Line Protocol status of VLAN 1 appears on the console before responding, VLAN 1 line status is always shown as down. This is the correct state.

The problem (VLAN 1 reporting up) occurs if you respond to the query before VLAN 1 line status appears on the console.

The workaround is to wait for approximately 1 minute after rebooting and until the VLAN 1 interface line status appears on the console before you respond to the query.

CSCso96778

When you use the ipv6 address dhcp interface configuration command on an interface that is configured in router mode, other addresses on the prefix associated with the new address might not be accessible.

The workaround is to use the ipv6 address dhcp interface configuration command on an interface that is configured in host mode, or configure a static route to the prefix through the interface.

CSCsw68528

On switches running Cisco IOS Release 12.2(44)SE or 12.2(46)SE, when you enter the show mvr interface interface-id members privileged EXEC command to see status of an MVR port, an MVR member port that is not connected always shows as ACTIVE.

The workaround is to use the show mvr interface interface-id or the show mvr members privileged EXEC command. These command outputs show the correct status of an MVR port.

CSCsw69006 (Catalyst 3750-E switches)

The show mvr members privileged EXEC command output does not include STATIC INACTIVE members. When a static port becomes ACTIVE, it appears in the output as expected.

There is no workaround.

CSCsw69015

When you enter the mvr vlan vlan-id global configuration command to create an MVR VLAN and enable MVR on the switch by entering the mvr global configuration command, if you enter the show mvr interface interface-id members privileged EXEC command, the output shows the MVR groups on the interface. However, if you enable MVR first and then create the MVR VLAN, the MVR groups are not displayed correctly.

The workaround, if the groups are not displaying correctly, is to create the MVR VLAN before enabling MVR. The configuration then displays correctly.

CSCsw96933 (Catalyst 3750-E switches)

A switch running Cisco IOS Release 12.2(46)SE might lose packets for up to 30 seconds when a link fails. This occurs in some multiple spanning-tree (MST) topologies.

There is no workaround.

CSCsx25276 (Catalyst 3750-E switches)

When software is reloaded on a switch stack master that has port security enabled, the switch stack might crash.

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.

CSCsx51098 (Catalyst 3750-E switches)

If the switch stack software is reloaded while the ACS is unreachable, a port configured with a critical VLAN might become error disabled, and a message similar to the one shown below appears on the switch console:

*Mar 3 01:10:13.423: %PM-4-ERR_DISABLE_VP: security-violation error detected on 
Fa8/0/7, vlan 3000. 
 
   

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

CSCsx56941 (Catalyst 3750-E switches)

After a PC connected to a switch in a stack is awakened by a Wake-on-LAN packet and authorized by MAC authentication bypass, a traceback message appears indicating a VLAN error.

No workaround is necessary because the message does not affect switch functionality.

CSCsx65958 (Catalyst 3750-E switches)

Following a stack reload, a port that is configured for single-host mode and is connected to a PC and an IP phone becomes error-disabled on the access VLAN.

There is no workaround.

CSCsx67722 (Catalyst 3750-E switches)

When EnergyWise is enabled and you reload member switches while leaving the stack master up, you might see a console traceback message similar to this:

Feb 12 22:08:45: %INTERFACE_API-3-NOADDSUBBLOCK: The HWIDB subblock named ENERGYWISE 
was not added to GigabitEthernet4/0/49
-Traceback= F943C8 F94B14 344E08 17D97E0 668798 A736B0 A73FB8 A743C8 BBAC28 BB16F8. 
 
   

This message is benign and does not cause any issues other than traceback.

No workaround is required because the message does not affect functionality, but you can avoid console messages by reloading the master switch as well as the member switches.

CSCsx70643 (Catalyst 3750-E switches)

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.

CSCsz88857 (Catalyst 3750E switches)

When an interface on the stack master is a member of an EtherChannel and the channel group number is removed before a master switch changeover, you can not use the same group number when you recreate the EtherChannel after the changeover.

These are possible workarounds:

Reload the switches in the EtherChannel into the channel group that you were not able to create.

Use a new channel group number to bundle the physical interfaces in an EtherChannel.

Reconfigure the EtherChannel before the master switch changeover.

CSCta57846

The switch unexpectedly reloads when copying a configuration file from a remote server or from flash memory containing logging file flash:

The workaround is to enter the logging file flash:filename global configuration command to configure logging to flash instead of copying to flash.

CSCtb55994

When EnergyWise Phase 1 is enabled on a switch that has unconnected interfaces, a memory leak might occur over several days. To verify this, use the show process memory sorted holding | i energy wise privileged EXEC command.

The workaround is to disable EnergyWise on the switch.

CSCtf35960

When periodic port-based reauthentication is enabled and a new stack master is elected, the stack does not reauthenticate a connected client.

The workaround is to enter the dot1x re-authenticate interface interface-id privileged EXEC command to reauthenticate the client.

CSCti79385

When a redirect URL is configured for a client on the authentication server and a large number of clients are authenticated, high CPU usage could occur on the switch.

There is no workaround.

Resolved Caveats

Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE5

Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE4

Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE3

Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE1

Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE

Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE5

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

Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE4

CSCsh59019

Authentication, authorization, and accounting (AAA) fails, preventing authentication and requiring you to recover your password. For example, when you enter the aaa authentication login default group tacacs line global configuration command, AAA fails.

There is no workaround.

CSCsk85192

When you use an access control server (ACS) to enable command authorization, the ACS does not process a copy command ending with a colon (for example, scp:, ftp:, tftp:, flash:).

This problem affects authentication, authorization, and accounting (AAA) authorization:

If the ACS denies a copy command ending with a colon, you can use that command on a switch.

If the ACS permits a copy command ending with a colon, you cannot use that command on a switch.

To workaround is to either deny or permit the copy command without entering any arguments on the ACS.

CSCsx97605

The CISCO-RTTMON-MIB is not correctly implemented in this release.

There is no workaround.

CSCsy37362 (Catalyst 3750-E switches)

After you have entered the snmp-server ifindex persist global configuration command on a stacked Catalyst 3750 switch that is running Cisco IOS Release 12.2.(50)SE, the switch fails and sends this error message:

platform assert failure: hwidb->snmp_if_index == ifIndex: ../src-hulc/src-common/hpm_idbman.c: 1772: hpm_register_idb_with_snmp (Switch-4)

-Traceback=

There is no workaround. A Catalyst 3750 switch that is running Cisco IOS Release 12.2.(50)SE does not support the snmp-server ifindex persist global configuration command.

CSCsy83366

On a switch that is configured for quality of service (QoS), a memory leak occurs when a small portion (about 90 bytes) of the processor memory is not released by the HRPC QoS request handler process.

There is no workaround.

CSCsz63465

When an RPS 2300 redundant power supply is connected to a Catalyst3750-E or 3560-E switch and the switch boots up, these messages might appear:

00:01:08: %PLATFORM_ENV-1-RPS_PS_THERMAL_CRITICAL: RPS power supply A temperature has reached critical threshold

00:01:08: %PLATFORM_ENV-1-RPS_PS_THERMAL_CRITICAL: RPS power supply B temperature has reached critical threshold

The root cause of the problem is that when a switch connected to the RPS 2300 is powered up, voltage changes on the switch to RPS communication bus could cause the RPS to erroneously accept commands as data to be written, which corrupts internal data and causes false alarms.

The workaround is to reset the RPS by entering this command sequence:

Switch# configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Switch(config)# service internal

Switch(config)# end

Switch# test rps reset

Are you sure you want to reset the system? [yes/no]: yes

Switch# configure terminal

Switch(config)# no service internal

CSCta09189

Packet loss and output drops occur on the egress interface for routed multicast traffic.

This problem occurs when multiple S,G entries time out at the same time and then are re-established at the same time, when multiple Protocol Independent Multicast (PIM) neighbors time out at the same time and then are re-established at the same time, or when multiple high-volume multicast streams are routed through multiple Layer-3 interfaces.

Use one of these workarounds:

Enter the clear ip mroute * EXEC command.

Enter the shutdown interface configuration command followed by the no shutdown interface configuration command on the egress interface.

CSCta87523

When you use Auto Smartports macros on an interface that is connected to an Cisco IP phone, the the quality of service (QoS) configuration for that interface is not completed.

The workaround is to enter the no mls qos vlan-based interface configuration command, and then enable QoS for voice over IP (VoIP) by entering the auto qos voip cisco-phone interface configuration command.

CSCtb08426 (Catalyst 3750-E switches)

When two switch stacks are connected, when the stack master fails, and when another switch becomes the stack master, convergence is delayed under these conditions:

The stack master has an active EtherChannel in Link Aggregation Control Protocol (LACP) mode.

The EtherChannel is cross-stacked.

There are two or more switches in each stack.

The workaround is to not use the EtherChannel LACP mode. Use the EtherChannel on mode to force ports to join an EtherChannel without negotiations.

CSCtb10158

A switch can fail when an SNMP process attempts to configure dot1x authentication when it is already configured.

There is no workaround.

CSCtb25230

When a switch stack is configured with DHCP snooping enabled on the host VLAN, hosts connected to the stack master receive bootp packets, but the a packet might not be forwarded to the end hosts connected to stack member switches. The behavior depends on which interface in the stack received the packet.

The workaround is to disable DHCP snooping for the affected VLAN.

CSCtb56844

After you have entered the authentication control-direction in interface configuration command on an authenticator switch port, authentication is successful and the port is in the authorized state. However, another switch that functions as the supplicant cannot pass any traffic over the trunk except for traffic on the native VLAN.

The workaround is to enter the no authentication control-direction interface configuration command on the authenticator port, and then enter the shutdown interface configuration command followed by the no shutdown interface configuration command to trigger a new authentication.

CSCtb57486

After you have entered the authentication host-mode multi-auth interface configuration command and have changed the access VLAN, MAC authentication bypass (MAB) does not work and authentication fails.

The workaround is to enter the shutdown interface configuration command followed by the no shutdown interface configuration command.

CSCtb58779

When the system memory is low, a watchdog timeout occurs, and the switch fails.

The workaround is to enter the show memory privileged EXEC command or show processes memory privileged EXEC command and stop any memory leaks.

CSCtb77378

When you use IEEE 802.1x authentication with web authentication and an HTTP page opens, the switch redirects the user to an HTTP login page, not a HTTPS login page.

The workaround is to remove the custom banner.

CSCtb84303 (Catalyst 3750-E switches)

In a switch stack, when the SNMP vlan change (vmMembershipEntry) MIB is sent to a member switch other than the stack master, line protocol and notification flapping occurs.

There is no workaround.

CSCtb91572

A switch enters a loop in which it continues to fail after it first has failed while starting, and then has failed again while attempting to recover. This failure loop occurs only after you have entered the archive upload-sw privileged EXEC command to write the configuration to a remote server using Secure Copy Protocol (SCP) and when the connection to the remote server is configured for spanning-tree PortFast.

The workaround is to not use SCP to write to the remote server. Use File Transfer Protocol (FTP) or Trivial File Transfer Protocol (TFTP).

CSCtc39809

A memory leak occurs when there is a stuck in active (SIA) state condition for an Enhanced Interior Gateway Routing Protocol (EIGRP) route.

There is no workaround.

CSCtc43231

A switch does not receive SNMP trap and inform messages from the correct interface after you have entered the snmp-server trap-source loopback0 and snmp-server source-interface informs loopback0 global configuration commands.

There is no workaround.

CSCtc57809

When the no mac address-table static mac-addr vlan vlan-id interface interface-id global configuration command is used to remove a dynamically learned MAC address, the switch fails under these conditions:

The physical interface is in a no shut state.

The MAC address is first dynamically learned and then changed to static.

There is no workaround.

CSCtc70571

When you have configured an output service policy, performing an SNMPWALK on cportQosStatistics causes loops.

There is no workaround.

CSCtc71798 (Catalyst 3750-E switches)

Traffic received on a member interface of a cross-stack EtherChannel is dropped from a switch stack. This intermittently occurred in previous releases after a stack reloaded.

There is no workaround.

CSCtc81879

After all member ports are brought up on a switch stack, MAC authentication bypass (MAB) authenticates the stack master ports but not any member switch ports. The symptom occurs after you have entered both the switchport port-security interface configuration command and the dot1x control-direction interface configuration command on the stack interfaces.

The workaround is to enter either the no switchport port-security interface configuration command or the no dot1x control-direction interface configuration command on the stack interfaces.

CSCtc90039

A memory leak occurs on a device that uses Enhanced Interior Gateway Routing Protocol (EIGRP) when the external routes are being exchanged.

The workaround is to stabilize the network to minimize the impact of external route advertisement.

CSCtd17296

When you enter the dot1x pae interface configuration command on a switch access port and then enable an access list in the inbound direction on an ingress switched virtual interface (SVI), the access list does not work, allowing all packets to pass.

The workaround is to enable the access list in the outbound direction on the egress SVI.

CSCtd30053

When you enter the no spanning-tree etherchannel guard misconfig global configuration command, enter the write memory privileged EXEC command, and then restart the switch, the spanning-tree etherchannel guard misconfig global configuration command is saved instead of the no form of this command.

There is no workaround.

CSCtd31242

An IP phone loses network connectivity under these conditions:

The IP phone is authenticated by MAB (in Open1x mode) on a supplicant switch.

The supplicant switch is connected to an authenticator switch through the NEAT protocol.

A call is placed using the IP phone. After approximately 5 minutes, network connectivity to the phone is lost.

The workaround is to statically configure the MAC address of the IP phone on the authenticator switch.

CSCtd72456

After you have entered the snmp-server host informs global configuration command to enable SNMP informs on a switch, the switch might fail if you enter the show snmp pending user EXEC command.

There is no workaround. Do not enter the show command when SNMP informs are enabled.

CSCtd72626

A Remote Switched Port Analyzer (RSPAN) does not detect IPv6 multicast packets on an RSPAN destination port.

There is no workaround.

CSCtd73256

A switch fails when you enter the show ip ospf interface user EXEC command and then stop the command output at the this line:

Backup Designated router (ID) xx.x.x.x, Interface address xx.x.x.x

The failure occurs when the Backup Designated Router (BDR) neighbor of the switch is shut down while you press Enter or the spacebar to advance the command output.

When the switch fails, it sends this error message:

Unexpected exception to CPUvector 2000, PC = 261FC60

There is no workaround.

CSCte00827

On a switch that has one port configured as a Switched Port Analyzer (SPAN) source port, a memory leak occurs when a Power-over-Ethernet (PoE) port link goes up and down.

There is no workaround.

CSCte67201

On a switch that is configured for IP routing and that is running Cisco IOS Release 12.2(50)SE or later, Cisco Express Forwarding (CEF) can use a large amount of memory. The IP RIB Update process uses about 2000 bytes for each prefix that CEF uses.

There is no workaround. You can reduce the memory use by reducing the number of routes the switch processes.

CSCte81321

After you have entered the logging filter global configuration command on a switch to specify a syslog filter module to be used by the Embedded Syslog Manager (ESM), processes logging many system messages retain increasing amounts of processor memory.

The workaround is to enter the no logging filter global configuration command.

Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE3

CSCsl72774

Memory allocation errors no longer occur when the Cisco Express Forwarding (CEF) consistency checkers have been enabled. The CEF consistency checkers have been enabled by default. They can also be enabled by using these global configuration commands:

cef table consistency-check ipv4

cef table consistency-check ipv6

CSCso57496

A switch no longer fails when you enter the configure replace privileged EXEC command, and a banner is already present in the switch configuration.

CSCso90107

You can now query the bgpPeerTable MIB for VPN/VRF interfaces.

CSCsq24002

Cisco IOS Software contains a vulnerability that could allow an attacker to cause a Cisco IOS device to reload by remotely sending a crafted encryption packet. Cisco has released free software updates that address this vulnerability. This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20090923-tls.shtml.

CSCsq51052

The output of the show ip ssh privileged EXEC command no longer displays SSH Enabled - version 2.99. Instead, a correct SSH version (1.5, 1.99 or 2.0) now appears.

CSCta32597

A switch no longer fails when a host moves from a dynamically assigned VLAN to a configured VLAN.

CSCta36155

A switch configured with 802.1x and port security on the same ports no longer might inappropriately put the ports into an error-disabled state.

CSCta56469

Moving a PC between two IP Phones without disconnecting either phone from the switch no longer triggers a port-security violation.

CSCta67777

A port security violation error no longer occurs when MAC address sticky learning is enabled on a port and a CDP is enabled on a connected IP Phone.

CSCsv32556 (Catalyst 3750E switches)

A Telnet, Secure Shell (SSH), or console session on the switch no longer fails when you use the show file systems EXEC command or when you access the remote file system, flashn: (where n is the switch number).

CSCsw45277

Third-party IP phones now automatically power up when reconnected to enabled PoE ports on the switch.

CSCsx36608 (Catalyst 3750E switches)

If a large number of clients in a switch stack use MAC authentication bypass to authenticate at the same time, the clients are no longer in the unauthorized state when

The stack members start at the same time because the stack reloaded or powered up.

The RADIUS server is down, the re-authentication timer expires, all the ports become unauthorized, and the RADIUS restarts.

All the ports on stack members are disabled and then re-enabled with the shutdown and no shutdown interface configuration commands at the same time.

The wake-on-LAN (WoL) feature is enabled and a large number of clients try to authenticate.

CSCsx49718

Re-authentication now occurs on a port under these conditions:

The port is in single-host mode.

The port is configured with the authentication event no-response action authorize vlan vlan-number command.

An EAPOL start packet is sent to the port.

CSCsx70889

Cisco devices running affected versions of Cisco IOS Software are vulnerable to a denial of service (DoS) attack if configured for IP tunnels and Cisco Express Forwarding.

Cisco has released free software updates that address this vulnerability.

This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20090923-tunnels.shtml.

CSCsy07555

Cisco IOS devices that are configured for Internet Key Exchange (IKE) protocol and certificate based authentication are vulnerable to a resource exhaustion attack. Successful exploitation of this vulnerability may result in the allocation of all available Phase 1 security associations (SA) and prevent the establishment of new IPsec sessions.

Cisco has released free software updates that address this vulnerability.

This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20090923-ipsec.shtml

CSCsy15227

Cisco IOS Software configured with Authentication Proxy for HTTP(S), Web Authentication or the consent feature, contains a vulnerability that may allow an unauthenticated session to bypass the authentication proxy server or bypass the consent webpage.

There are no workarounds that mitigate this vulnerability.

This advisory is posted at the following link:

http://www.cisco.com/warp/public/707/cisco-sa-20090923-auth-proxy.shtml

CSCsy27389

The switch now changes the time in an EnergyWise recurrence event when the local time changes to daylight saving time.

CSCsy48370

The switch no longer fails when you use the vacant-message line configuration command.

CSCsy57970

When IEEE 802.1x multiple authentication mode is configured on a port, two PCs have been authenticated, and the first PC is disconnected, the second PC now receives and forwards traffic on the port.

CSCsy72669

If a link failure occurs on a secondary edge port, preemption now occurs after the link comes up.

CSCsy72726

A switch running Cisco IOS Release 12.2(50)SE or later no longer might unexpectedly restart when Auto Smart Ports is enabled and the switch is configured for SSH or the HTTP secure server is enabled by entering the ip http secure-server global configuration command.

CSCsy92762

For Catalyst 3750-E and 3560-E switches and power supplies, the show env all command output no longer shows Failure-Fan after you upgrade your software from Cisco IOS Release 12.2(46)SE to Cisco IOS Release 12.2(50)SE3.

CSCsz12381

When open1x authentication and MAC authentication bypass are enabled on a port, an IP phone is connected to the port, and DHCP snooping is enabled on the switch, DHCP traffic is now forwarded on the voice VLAN before open 1x authentication times out and the switch uses MAC authentication bypass to authorize the port.

CSCsz13490

The switch no longer reloads when you enter several key strokes while in interface-range configuration mode.

CSCsz14369

If MAC authentication bypass is enabled and the RADIUS server is not available, the switch now tries to re-authenticate a port after a server becomes available.

CSCsz79293 (Catalyst 3750E switches)

When VPN routing and forwarding (VRF) is configured on the stack master, communication no longer fails after the stack master has shut down.

CSCsz79652

A memory leak no longer occurs when Cisco Network Assistant is polling the switch and the ip http server or ip http-secure-server global configuration command is enabled.

CSCsz77920

If you are configuring Flexible Authentication Ordering with web authentication on a switch port and the switch uses 802.1x to authenticate the host, Address Resolution Protocol (ARP) now works properly.

CSCsy34739

A trunk port no longer goes into the error-disabled state when the trunk port's native VLAN is in a suspended state or is not configured on the switch itself.

CSCsy71842 (Catalyst 3750E switches)

The Layer 2 Protocol Tunneling (L2PT) drop-threshold protocol no longer continues to drop traffic after it is removed from the switch configuration.

CSCsz81762

If you enable automatic server testing through the radius-server host ip-address [test username name] global configuration command, the switch no longer sends requests to the RADIUS server if the server is not available.

CSCsz89393 (Catalyst 3750E switches)

SNMP queries to the Bridge-MIB now operate on switch stacks with five or more stack members and a large number of active ports.

Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE1

CSCsb46724

If the connection to a primary AAA server fails, the backup server is now queried for login access.

CSCsr92741

When a TCP packet with all flags set to zero (at the TCP level) is sent to a remote router, the remote (destination) router no longer returns an ACK/RST packet back to the source of the TCP segment.

CSCsy24510

The switch now accepts an encrypted secret password.

CSCsy41470

The switch no longer runs out of memory when an smnpwalk, snmpget, or snmpbulkwalk is run on the CISCO-ENERGYWISE-MIB.

Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE

CSCsr65689 (Catalyst 3750-E switches)

When loopback interfaces are configured, this error message no longer appears when a stack member is loading:

%COMMON_FIB-3-FIBIDBINCONS2
 
   

CSCso53157 (Catalyst 3750-E switches)

When STP is disabled on the stack, the Hot Standby Router Protocol (HSRP) hello packets now pass through the switch stack when the stack is connected to two routers through cross-stack EtherChannels.

CSCsq26873

The server no longer attempts re-authentication every ten minutes when a switch is configured with the dot1x timeout reauth-period server interface configuration command.

CSCsq63926

The following message no longer appears when configuring an access list with large logical operation units (LOUs):

*Mar 1 00:10:29.296 UTC: %ACLMGR-2-NOVMR: Cannot create VMR data structures for access
list aclvlan42out
 
   

Additionally tracebacks are no longer seen when applying some ACLs.

CSCsq67398

Traffic is now forwarded to the interfaces that are configured with static multicast MAC addresses after the switch is reloaded.


Note You cannot configure the static MAC address (unicast or multicast) entries on EtherChannel member interfaces, or add an interface into the EtherChannel if that interface is associated with a static MAC address entry.


CSCsq89564

If the switch uses 802.1x authentication with VLAN assignment, it no longer uses the VLAN assignment with different authorization attempts, such as user authentication or re-authentication.

CSCsr50766

When keepalive is disabled on an interface, the interface is no longer put in an error-disabled state when it receives keepalive packets.

CSCsr64007

The Switched Port Analyzer (SPAN) destination port no longer detects IPv6 multicast packets from a VLAN that is not being monitored by SPAN.

CSCsr65689

This message no longer appears in the log during the system bootup on a switch that is running
Cisco IOS 12.2(50)SE:

%COMMON_FIB-3-FIBIDBINCONS2
 
   

CSCsu06485 (Catalyst 3750-E switches)

A switch stack is connected to Switch 1 and Switch 1 in the spanning-tree topology:

Stack member 1 is connected to Switch 1 through the port 1/0/1.

Switch 1 is the root bridge.

Port 1/0/1 is in the forwarding state.

Stack member 3 is connected to Switch 2 through the port 3/0/1.

Port 3/0/1 is in the blocking state.

If you enter the stack-mac persistent timer 5 global configuration command to set the time period to 5 minutes before the stack MAC address changes to that of the new stack master and then power off Switch 1, port 3/0/1 no longer takes 5 minutes to move from the blocking state to the forwarding state.

CSCsu10065

When SFP ports are configured as status multicast router ports, IPv6 Multicast Listener Discovery (MLD) snooping now works after the switch reloads.

CSCsu59214

The Set TxPortFifo SRR Failed message no longer appears when you enter both the srr-queue bandwidth shape 200 0 2 200 and the priority-queue out interface configuration commands on the same interface.

CSCsu88168

The switch no longer reloads when the Forwarding Information Base (FIB) adjacency table is added.

CSCsu98032 (Catalyst 3560-E switches)

A DHCP client connected to 10 Gigabit ports 0/5-9 or Gigabit Ethernet ports 0/9-16 on a Catalyst 3650 switch model WS-C3560-12D can now get an IP address when DHCP snooping is enabled on both the switch and the client VLAN.

CSCsv04836

Multiple Cisco products are affected by denial of service (DoS) vulnerabilities that manipulate the state of Transmission Control Protocol (TCP) connections. By manipulating the state of a TCP connection, an attacker could force the TCP connection to remain in a long-lived state, possibly indefinitely. If enough TCP connections are forced into a long-lived or indefinite state, resources on a system under attack may be consumed, preventing new TCP connections from being accepted. In some cases, a system reboot may be necessary to recover normal system operation. To exploit these vulnerabilities, an attacker must be able to complete a TCP three-way handshake with a vulnerable system.

In addition to these vulnerabilities, Cisco Nexus 5000 devices contain a TCP DoS vulnerability that may result in a system crash. This additional vulnerability was found as a result of testing the TCP state manipulation vulnerabilities.

Cisco has released free software updates for download from the Cisco website that address these vulnerabilities. Workarounds that mitigate these vulnerabilities are available.

This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20090908-tcp24.shtml.

CSCsv13625 (Catalyst 3560-E switches)

If a TwinGig Converter Module is removed from the switch, the link state of unconnected X2 ports that belong to the same port ASIC no longer are reported as Up.

CSCsv16740

After upgrading the switch software from IOS Release 12.2(25) SED1 to IOS Release 12.2(25) SEE4, you can now ping a switch virtual interface (SVI) from an isolated VLAN.

CSCsv30429

A Cisco IP Phone connected to a Catalyst switch no longer becomes unauthorized when it transitions from the data authorization domain to the voice authorization domain.

CSCsv37696

A switch running SNMP no longer fails after a reload when interface fa0 is assigned a DHCP address.

CSCsv64023

A switch port configured for IGMP snooping no longer loses its group membership when the port receives a query comes from an upstream device that is not configured for IGMP snooping.

CSCsv89005

A switch configured with class-based policies that are applied and active on at least one interface no longer might reload or display CPU hog messages during SNMP polling for the ciscoCBQosMIB.

CSCsv91358

When you have entered the vlan dot1q tag native global configuration command to configure a switch to tag native VLAN frames on 802.1Q trunk ports, and you configure a new voice VLAN on an access port, the MAC address of a connected PC is now correctly relearned.

CSCsw17270 (Catalyst 3750-E switches)

You no longer see this message on a stack when spanning-tree loopguard is globally enabled: %SPANTREE-2-LOOPGUARD_BLOCK: Loop guard blocking port StackPort1 on VLAN0001.

CSCsw29555

When monitoring a 10 Gb/s interface or a port channel with a 10 Gb/s interface, the SNMP counters ifHCInOctets and ifHCOutOctets no longer randomly increase by a large amount.

CSCsw30249

When a switch virtual interface (SVI) is configured as unnumbered and is pointing to a loopback interface, the switch no longer fails when the SVI receives a packet.

CSCsw45337

When LLDP is enabled and a voice VLAN is configured, the L2 Priority and DSCP Value fields in the LLDP type, length, and value descriptions (TLVs) are now correctly marked to give the voice traffic the correct DSCP and Layer 2 priority.

CSCsw65548

Switch ports no longer attempt authentication at the interval configured for the port security timer instead of the configured IEEE 802.1x timer.

CSCsw85180

The switch now performs unequal-cost load balancing.

CSCsu93869 (Catalyst 3750-E switches)

When the master switch in a Catalyst 3750 switch stack initiates an auto-copy process to automatically upgrade member switch images, the upgrade now succeeds when a member switch is in a version mismatch state.

Documentation Updates

These sections provide updates to the product documentation:

"Updates to the Cisco Software Activation and Compatibility Document" section

"Updates to the Software Configuration Guide" section

"Updates to the System Message Guide" section

"Update to the Getting Started Guides" section

Updates to the 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.

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 Software Configuration Guide

Unsupported Embedded Event Manager Commands

Privileged EXEC

event manager scheduler clear

event manager update user policy

show event manager detector

show event manager version

Global Configuration

event manager detector rpc

event manager directory user repository

Applet Configuration (config-applet)

event rpc

event snmp-notification

trigger (EEM)

Trigger Applet Configuration (config-applet-trigger)

attribute (EEM)

correlate

Event Trigger Configuration (config-event-trigger)

event owner

In the "Configuring Interface Characteristics" chapter.

This information is removed from the "Configuring the Cisco Redundant Power System 2300" section.


Note The Catalyst 3750 and 3560 switches do not support the power rps user EXEC command. You cannot configure the redundant power system (RPS) name, RPS port name, or RPS port priority on these switches.


This information is modified in the "Monitoring Interface Status" section.

In the "Show Commands for Interfaces" table, the purpose of the show env rps privileged EXEC command is to display whether a redundant power system (RPS) is connected to the switch as follows:

Catalyst 3750-E or 3560-E switch—Cisco Redundant Power System 2300, also referred to as the RPS 2300.

Catalyst 3750v2 or 3560v2 switch—Cisco Redundant Power System 2300.

Catalyst 3750, 3560, 2970, or 2960 switches—RPS 2300 or Cisco RPS 675 Redundant Power System, also referred to as the RPS 675.

Updates to the Command Reference

debug authentication

Use the debug authentication privileged EXEC command to enable debugging of the authentication settings on an interface. Use the no form of this command to disable debugging.

debug authentication {all | errors | events | sync | feature [all] [acct] [auth_fail_vlan] [auth_policy] [autocfg] [critical] [dhcp] [guest_vlan] [mab_pm] [mda] [multi_auth] [switch_pm] [switch_sync] [vlan_assign] [voice] [webauth] [all | errors | events]}

no debug authentication {all | errors | events | sync | feature [all] [acct] [auth_fail_vlan] [auth_policy] [autocfg] [critical] [dhcp] [guest_vlan] [mab_pm] [mda] [multi_auth] [switch_pm] [switch_sync] [vlan_assign] [voice] [webauth] [all | errors | events]}

Syntax Description

acct

(Optional) Display authentication manager accounting information.

all

(Optional) Display all authentication manager debug messages.

auth_fail_vlan

(Optional) Display authentication manager errors for the restricted VLAN.

auth_policy

(Optional) Display authentication policy messages.

autocfg

(Optional) Display autoconfiguration authentication manager debug messages.

critical

(Optional) Display the inaccessible authentication bypass messages.

Note The inaccessible authentication bypass feature is also referred to as critical authentication or the authentication, authorization, and accounting (AAA) fail policy.

dhcp

(Optional) Display authentication manager debug messages on DHCP dynamic address-enable interfaces.

errors

(Optional) Display all authentication manager error debug messages.

events

(Optional) Display all authentication manager event debug messages, including registry and miscellaneous events.

feature

(Optional) Display authentication manager feature debug messages

guest_vlan

(Optional) Display guest VLAN authentication manager messages.

mab_pm

(Optional) Display MAC authentication manager bypass authentication debug messages.

mda

(Optional) Display multidomain authentication manager debug messages.

multi_auth

(Optional) Display multi-authentication manager debug authentication messages.

switch_pm

(Optional) Display switch port manager messages.

switch_sync

(Optional) Display synchronization messages between the switch, the authentication server, and the connected devices.

sync

(Optional) Display operational synchronization authentication manager debug messages.

vlan_assign

(Optional) Display the VLAN-assignment debug messages.

voice

(Optional) Display the voice-VLAN debug messages.

webauth

(Optional) Display web authentication manager debug messages.


Defaults

Authentication debugging is disabled.

Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(50)SE

This command was introduced.


Usage Guidelines

The undebug authentication command is the same as the no debug authentication command.

On stacking switches, when you enable debugging, it is enabled only on the stack master.

To enable debugging on a stack member, you can start a session from the stack master by using the session switch-number privileged EXEC command and then entering the debug authentication command at the command-line prompt of the stack member. You also can use the remote command stack-member-number line privileged EXEC command on the stack master switch to enable debugging on a stack member.

Related Commands

Command
Description

authentication control-direction

Configures the port mode as unidirectional or bidirectional.

authentication event

Sets the action for specific authentication events.

authentication fallback

Configures a port to use web authentication as a fallback method for clients that do not support IEEE 802.1x authentication.

authentication host-mode

Sets the authorization manager mode on a port.

authentication open

Enables or disables open access on a port.

authentication order

Sets the order of authentication methods used on a port.

authentication periodic

Enables or disables reauthentication on a port.

authentication port-control

Enables manual control of the port authorization state.

authentication priority

Adds an authentication method to the port-priority list.

authentication violation

Configures the violation modes that occur when a new device connects to a port or when a new device connects to a port after the maximum number of devices are connected to that port.

show authentication

Displays information about authentication manager events on the switch.


Updates to the System Message Guide

This section contains the system message guide updates.

New System Messages

These messages were added to the system message guide:

Error Message    ACLMGR-2-NOVMR: Cannot generate hardware representation of access list 
[chars] 

Explanation    There are insufficient resources available to create a hardware representation of the ACL. A lack of available logical operation units or specialized hardware resources can cause this problem. Logical operation units are needed for a TCP flag match or a test other than eq (ne, gt, lt, or range) on TCP, UDP, or SCTP port numbers.

Recommended Action    Modify the ACL configuration to use fewer resources, or rename the ACL with a name or number that alphanumerically precedes the other ACL names or numbers.

Error Message    ACLMGR-4-UNLOADINGFSPAN Unloading[chars]session[dec][chars]feature

Explanation    The access control list (ACL) manager is unable to store the flow-based SPAN (FSPAN) configuration, and this feature has been temporarily disabled for the specified session. The first [chars] is the type of FSPAN session: either vlan-based FSPAN for a VLAN FSPAN session or port-based FSPAN for a port FSPAN session. [dec] is the session number, and the second [chars] is the type of traffic being filtered: MAC, IPv4, or IPv6.

Recommended Action    Specify an SDM template that allocates more system resources for ACLs, simplify the ACL, or use the same ACLs on multiple interfaces.

Error Message    ACLMGR-4-RELOADEDFSPAN Reloading [chars] session [dec] [chars] feature

Explanation    The access control list (ACL) manager can store the flow-based SPAN configuration for the specified session. One or more ACLs had previously been unloaded because of lack of hardware memory. The first [chars] is the type of FSPAN session: either vlan-based FSPAN for a VLAN FSPAN session or port-based FSPAN for a port FSPAN session. [dec] is the session number, and the second [chars] is the type of traffic being filtered: MAC, IPv4, or IPv6.

Recommended Action    No action is required.

Error Message    DOT1X_SWITCH-5-ERR_ADDING_ADDRESS: Unable to add address [enet] on 
[chars]

Explanation    The client MAC address could not be added to the MAC address table because the hardware memory is full or the address is a secure address on another port. [enet] is the supplicant MAC address, and [chars] is the interface. This message might appear if the IEEE 802.1x feature is enabled.

Recommended Action    If the hardware memory is full, remove some of the dynamic MAC addresses. If the client address is on another port, manually remove it from that port.

Error Message    EC-5-CANNOT_BUNDLE1: Port-channel [chars] is down, port [chars] will 
remain stand-alone. 

Explanation    The aggregation port is down. The port remains standalone until the aggregation port is up. The first [chars] is the EtherChannel. The second [chars] is the port number.

Recommended Action    Ensure that the other ports in the bundle have the same configuration]

Error Message    ILPOWER-3-CONTROLLER_PORT_ERR:Controller port error, Interface 
Fa0/7:Power given, but link is not up.

Explanation    The inline-power-controller reported an error on an interface.

Recommended Action    Enter the shutdown and no shutdown interface configuration commands on the affected interfaces. Upgrade to Cisco IOS Release12.1(14)EA1 or later, which provides an electrostatic discharge (ESD) recovery mechanism.

Error Message    %PAGP_DUAL_ACTIVE-3-OBJECT_CREATE_FAILED: Unable to create [chars] 

Explanation    The switch cannot create the specified managed object. [chars] is the object name.

Recommended Action    No action is required.

Error Message    %PAGP_DUAL_ACTIVE-3-RECOVERY_TRIGGER: PAgP running on [chars] 
informing virtual switches of dual-active: new active id [enet], old id [enet] 

Explanation    Port Aggregation Protocol (PAgP) received a new active ID on the specified interface, which means that all virtual switches are in a dual-active scenario. The interface is informing virtual switches of this, which causes one switch to go into recovery mode. [chars] is the interface. The first [enet] is the new active ID. The second [enet] is the ID that it replaces.

Recommended Action    No action is required.

Error Message    %PAGP_DUAL_ACTIVE-3-REGISTRY_ADD_ERR: Failure in adding to [chars] 
registry 

Explanation    The switch could not add a function to the registry. [chars] is the registry name.

Recommended Action    No action is required.

Error Message    PLATFORM_UCAST-6-PREFIX: One or more, more specific prefixes could not 
be programmed into TCAM and are being covered by a less specific prefix

Explanation    A more specific prefix could not be programmed into Ternary Content Addressable Memory (TCAM) and is covered by a less specific prefix. This could be a temporary condition. The output of the show platform ip unicast failed route privileged EXEC command lists the failed prefixes.

Recommended Action    No action is required.

Error Message    PLATFORM_HCEF-3-ADJ: [chars]

Explanation    This message appears when an unsupported feature is configured on a switch running Cisco IOS Release 12.2(25)SE. [chars] is the error message.

Recommended Action    Determine if a generic routing encapsulation (GRE) tunnel or the ip cef accounting global configuration command are configured. Only Distance Vector Multicast Routing Protocol (DVMRP) tunnels are supported. If the GRE tunnel is configured, remove the tunnel, or upgrade the switch software to a Cisco IOS release when the GRE feature is needed. If the ip cef accounting command is configured, remove it by using the no ip cef accounting global configuration command.


Note Cisco IOS Release12.2(25)SEB2 does not support the ip cef accounting command.


Error Message    PLATFORM_IPv6_UCAST-6-PREFIX: One or more, more specific prefixes 
could not be programmed into TCAM and are being covered by a less specific prefix

Explanation    A more specific prefix could not be programmed into Ternary Content Addressable Memory (TCAM) and is covered by a less specific prefix. This could be a temporary condition. The output of the show platform ipv6 unicast retry route privileged EXEC command lists the failed prefixes.

Recommended Action    No action is required.

Error Message    PLATFORM_SPAN-3-FEATUREMISMATCH:[chars] cannot be supported with the 
image running on switch [dec].

Explanation    A switch stack member software image does not support a specific flow-based SPAN (FSPAN) access control list (ACL) filter. [chars] is the FSPAN ACL filter that is not supported, and [dec] is the stack member number.

Recommended Action    Upgrade to an image that supports the FSPAN ACL filter.

Error Message    %PM-6-EXT_VLAN_ADDITION: Extended VLAN is not allowed to be configured 
in VTP CLIENT mode. 

Explanation    The switch did not add a VLAN in VTP client mode.

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. For more information about these online tools and about contacting Cisco, see the "Error Message Traceback Reports" section in the system message guides.

Error Message    SPANTREE-6-PORTADD_ALL_VLANS: [chars] added to all Vlans

Explanation    The interface has been added to all VLANs. [chars] is the added interface.

Recommended Action    No action is required.

Error Message    SPANTREE-6-PORTDEL_ALL_VLANS: [chars] deleted from all Vlans  

Explanation    The interface has been deleted from all VLANs. [chars] is the deleted interface.

Recommended Action    No action is required.

Error Message    SW_VLAN-6-VTP_DOMAIN_NAME_CHG: VTP domain name changed to [chars]. 

Explanation    The VLAN Trunking Protocol (VTP) domain name was changed through the configuration to the name specified in the message. [chars] is the changed domain name.

Recommended Action    No action is required.

Error Message    VQPCLIENT-2-TOOMANY: Interface [chars] shutdown by active host limit. 

Explanation    The system has shut down the specified interface because too many hosts have requested access to that interface. [chars] is the interface name.

Recommended Action    To enable the interface, remove the excess hosts, and enter the no shutdown interface configuration command.

Error Message    VQPCLIENT-3-VLANNAME: Invalid VLAN [chars] in response. 

Explanation    The VLAN membership policy server (VMPS) has specified a VLAN name that is unknown to the switch. [chars] is the VLAN name.

Recommended Action    Ensure that the VLAN exists on the switch. Verify the VMPS configuration by entering the show vmps privileged EXEC command.

Error Message    WCCP-5-CACHEFOUND: Web Cache [IP_address] acquired. 

Explanation    The switch has acquired the specified web cache. [IP_address] is the web cache IP address.

Recommended Action    No action is required.

Error Message    WCCP-1-CACHELOST: Web Cache [IP_address] lost. 

Explanation    The switch has lost contact with the specified web cache. [IP_address] is the web cache IP address.

Recommended Action    Verify the operation of the web cache by entering the show ip wccp web-cache privileged EXEC command.

Deleted System Messages

These messages were deleted from the system message guide:

Error Message    ACLMGR-2-NOVMR: Cannot create VMR data structures for access list 
[chars]. 
Error Message    %VQPCLIENT-2-INITFAIL: Platform-specific VQP initialization failed. 
Quitting 
Error Message    %VQPCLIENT-2-IPSOCK: Could not obtain IP socket 
Error Message    %VQPCLIENT-7-NEXTSERV: Trying next VMPS [IP_address] 
Error Message    %VQPCLIENT-7-PROBE: Probing primary server [IP_address] 
Error Message    %VQPCLIENT-2-PROCFAIL: Could not create process for VQP. Quitting 
Error Message    %VQPCLIENT-7-RECONF: Reconfirming VMPS responses 
Error Message    %VQPCLIENT-2-SHUTDOWN: Interface [chars] shutdown by VMPS 
Error Message    %VQPCLIENT-3-THROTTLE: Throttling VLAN change on [chars] 

Update to the 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


Related Documentation

These documents provide complete information about the Catalyst 3750-E and Catalyst 3560-E switches and are available on Cisco.com:

http://www.cisco.com/en/US/products/ps7077/tsd_products_support_series_home.html

http://www.cisco.com/en/US/products/ps7078/tsd_products_support_series_home.html

These documents provide complete information about the switches:

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

Release Notes for the Catalyst 3750-E and Catalyst 3560-E Switch

Catalyst 3750-E and Catalyst 3560-E Switch Software Configuration Guide

Catalyst 3750-E and Catalyst 3560-E Switch Command Reference

Catalyst 3750-E and Catalyst 3560-E Switch System Message Guide

Cisco Software Activation and Compatibility Document

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

Device manager online help (available on the switch)

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

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.