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Table Of Contents
Device Manager System Requirements
Finding the Software Version and Feature Set
Upgrading a Switch by Using the Device Manager or Network Assistant
Upgrading a Switch by Using the CLI
Recovering from a Software Failure
Minimum Cisco IOS Release for Major Features
Stacking (Catalyst 3750 switch stack only)
Resolved IOS Caveats in Cisco IOS Release 12.2(25)SEB4
Resolved IOS Caveats in Cisco IOS Release 12.2(25)SEB3
Resolved IOS Caveats in Cisco IOS Release 12.2(25)SEB2
Resolved IOS Caveats in Cisco IOS Release 12.2(25)SEB1
Resolved IOS Caveats in Cisco IOS Release 12.2(25)SEB
Documentation Updates in Cisco IOS Release 12.2(25)SEB
Updates to the Software Configuration Guides
Configuring Interface Characteristics for the Catalyst 3750 Switch
Updates to the Command Reference
ip igmp snooping last-member-query interval
Documentation Updates in Cisco IOS Release 12.2(25)SEA
Correction to the Software Configuration Guides
Updates for the Software Configuration Guides
Updates for the Command Reference
Cisco Product Security Overview
Reporting Security Problems in Cisco Products
Obtaining Technical Assistance
Cisco Technical Support & Documentation Website
Definitions of Service Request Severity
Obtaining Additional Publications and Information
Release Notes for the Catalyst 3750, 3560, and 2970 Switches, Cisco IOS Release 12.2(25)SEB and Later
Revised November 2, 2005
The Cisco IOS Release 12.2(25)SEB and later run on all Catalyst 3750, 3560, and 2970 switches.
The Catalyst 3750 switches support stacking through Cisco StackWise technology. The Catalyst 3560 and 2970 switches do not support switch stacking. Unless otherwise noted, the term switch refers to a standalone switch and to a switch stack.
These release notes include important information about Cisco IOS Release 12.2(25)SEB, Cisco IOS Release 12.2(25)SEB1, Cisco IOS Release 12.2(25)SEB2, Cisco IOS Release 12.2(25)SEB3, and Cisco IOS Release 12.2(25)SEB4, and any limitations, restrictions, and caveats that apply to them. Verify that these release notes are correct for your switch:
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If you are installing a new switch, see the Cisco IOS release label on the rear panel of your switch.
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For the complete list of Catalyst 3750, 3560, and 2970 switch documentation, see the "Related Documentation" section.
You can download the switch software from this site (registered Cisco.com users with a login password):
http://www.cisco.com/public/sw-center/sw-lan.shtml
Note
This software release is part of a special release of Cisco IOS software that is not released on the same 8-week 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.
Cisco IOS Release 12.2(25)SEB and later are based on Cisco IOS Release 12.2(25)S. Open caveats in Cisco IOS Release 12.2(25)S also affect Cisco IOS Release 12.2(25)SEB and later, unless they are listed in the Cisco IOS Release 12.2(25)SEB and later resolved caveats list. The list of open caveats in Cisco IOS Release 12.2(25)S is available at this URL:
/en/US/docs/ios/12_2s/release/notes/122Srn.html#wp2367913
Contents
This information is in the release notes:
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System Requirements
The system requirements are described in these sections:
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Hardware Supported
Table 1 lists the hardware supported on Cisco IOS Release 12.2SE.
Table 1 Catalyst 3750, 3560, and 2970 Supported Hardware
Catalyst 3750-24FS
24 100BASE-FX ports and 2 SFP1 module slots
Cisco IOS Release 12.2(25)SEB
Catalyst 3750-24PS
24 10/100 PoE2 ports and 2 SFP module slots
Cisco IOS Release 12.2(18)SE
Catalyst 3750-24TS
24 10/100 Ethernet ports and 2 SFP module slots
Cisco IOS Release 12.2(18)SE
Catalyst 3750-48PS
48 10/100 PoE ports and 4 SFP module slots
Cisco IOS Release 12.2(18)SE
Catalyst 3750-48TS
48 10/100 Ethernet ports and 4 SFP module slots
Cisco IOS Release 12.2(18)SE
Catalyst 3750G-12S
12 SFP module slots
Cisco IOS Release 12.2(18)SE
Catalyst 3750G-12S-SD
12 SFP module slots
Cisco IOS Release 12.2(25)SEB
Catalyst 3750G-16TD
16 10/100/1000 Ethernet ports and 1 XENPAK 10-Gigabit Ethernet module slot
Cisco IOS Release 12.2(18)SE
Catalyst 3750G-24PS
24 10/100/1000 PoE ports and 4 SFP module slots
Cisco IOS Release 12.2(20)SE3
Catalyst 3750G-24T
24 10/100/1000 Ethernet ports
Cisco IOS Release 12.2(18)SE
Catalyst 3750G-24TS
24 10/100/1000 Ethernet ports and 4 SFP module slots
Cisco IOS Release 12.2(18)SE
Catalyst 3750G-24TS-1U
24 10/100/1000 Ethernet ports and 4 SFP module slots
Cisco IOS Release 12.2(20)SE3
Catalyst 3750G-48PS
48 10/100/1000 PoE ports and 4 SFP module slots
Cisco IOS Release 12.2(20)SE3
Catalyst 3750G-48TS
48 10/100/1000 Ethernet ports and 4 SFP module slots
Cisco IOS Release 12.2(20)SE3
Catalyst 3560-24PS
24 10/100 PoE ports and 2 SFP module slots
Cisco IOS Release 12.2(18)SE
Catalyst 3560-24TS
24 10/100 ports and 2 SFP module slots
Cisco IOS Release 12.2(20)SE3
Catalyst 3560-48PS
48 10/100 PoE ports and 4 SFP module slots
Cisco IOS Release 12.2(18)SE
Catalyst 3560-48TS
48 10/100 ports and 4 SFP module slots
Cisco IOS Release 12.2(20)SE3
Catalyst 3560G-24PS
24 10/100 PoE ports and 4 SFP module slots
Cisco IOS Release 12.2(20)SE3
Catalyst 3560G-24TS
24 10/100/1000 Ethernet ports and 4 SFP module slots
Cisco IOS Release 12.2(20)SE3
Catalyst 3560G-48PS
48 10/100/1000 PoE ports and 4 SFP module slots
Cisco IOS Release 12.2(20)SE3
Catalyst 3560G-48TS
48 10/100/1000 Ethernet ports and 4 SFP module slots
Cisco IOS Release 12.2(20)SE3
Catalyst 2970G-24T
24 10/100/1000 Ethernet ports
Cisco IOS Release 12.2(18)SE
Catalyst 2970G-24TS
24 10/100/1000 Ethernet ports and 4 SFP module slots
Cisco IOS Release 12.2(18)SE
SFP modules
1000BASE-T, 1000BASE-SX
1000BASE-LX, 1000BASE-ZX, and CWDM3
100BASE-FX MMF4
Cisco IOS Release 12.2(18)SE
Cisco IOS Release 12.2(20)SE
XENPAK modules5
XENPAK-10-GB-ER, XENPAK-10-GB-LR, XENPAK-10-GB-LX4, XENPAK-10-GB-SR, and XENPAK-10-GB-CX4
Cisco IOS Release 12.2(18)SE
Redundant power systems
Cisco RPS 675 Redundant Power System
Supported on all software releases
1 SFP = small form-factor pluggable
2 PoE = Power over Ethernet
3 CWDM = coarse wavelength-division multiplexer
4 MMF = multimode fiber
5 XENPAK modules are only supported on the Catalyst 3750G-16TD switches.
Device Manager System Requirements
These sections describes the hardware and software requirements for using the device manager:
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Hardware Requirements
Table 2 lists the minimum hardware requirements for running the device manager.
Table 2 Minimum Hardware Requirements
Intel Pentium II1
64 MB2
256
1024 x 768
Small
1 We recommend Intel Pentium 4.
2 We recommend 256-MB DRAM.
Software Requirements
Table 3 lists the supported operating systems and browsers for using the device manager. The device manager verifies the browser version when starting a session to ensure that the browser is supported.
Note
Table 3 Supported Operating Systems and Browsers
Windows 98
None
5.5 or 6.0
7.1
Windows NT 4.0
Service Pack 6 or later
5.5 or 6.0
7.1
Windows 2000
None
5.5 or 6.0
7.1
Windows XP
None
5.5 or 6.0
7.1
1 Service Pack 1 or higher is required for Internet Explorer 5.5.
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:
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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.
Upgrading the Switch Software
These are the procedures for downloading software. Before downloading software, read this section for important information:
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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
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.
For the Catalyst 3750 and 3560 switches, Cisco IOS Release 12.2(25)SEA and earlier referred to the image that provides Layer 2+ features and basic Layer 3 routing as the standard multilayer image (SMI). The image that provides full Layer 3 routing and advanced services was referred to as the enhanced multilayer image (EMI).
Cisco IOS Release 12.2(25)SEB and later refers to the SMI as the IP base image and the EMI as the IP services image.
Cisco IOS Release 12.2(25)SEB and later refers to the Catalyst 2970 image as the LAN base image.
Table 4 lists the different file-naming conventions before and after Cisco IOS Release 12.2(25)SEB.
Table 4 Cisco IOS Image File Naming Convention
c3750-i9-mz (SMI1 )
c3750-ipbase-mz
c3750-i9k91-mz (SMI)
c3750-ipbasek9-mz
c3750-i5-mz (EMI2 )
c3750-ipservices-mz
c3750-i5k91-mz (EMI)
c3750-ipservicesk9-mz
c3560-i9-mz (SMI)
c3560-ipbase-mz
c3560-i9k91-mz (SMI)
c3560-ipbasek9-mz
c3560-i5-mz (EMI)
c3560-ipservices-mz
c3560-i5k91-mz (EMI)
c3560-ipservicesk9-mz
c2970-i6l2-mz
c2970-lanbase-mz
c2970-i6k91l2-mz
c2970-lanbasek9-mz
1 SMI = standard multilayer image
2 EMI = enhanced multilayer image
Table 5 lists the filenames for this software release.
Note
Table 5 Cisco IOS Software Image Files
Filename
c3750-ipbase-tar.122-25.SEB4.tar
Catalyst 3750 IP base image and device manager files.
This image has Layer 2+ and basic Layer 3 routing features.c3750-ipservices-tar.122-25.SEB4.tar
Catalyst 3750 IP services image and device manager files.
This image has both Layer 2+ and full Layer 3 routing features.c3750-ipbasek9-tar.122-25.SEB4.tar
Catalyst 3750 IP base cryptographic image and device manager files.
This image has the Kerberos, SSH1 , Layer 2+, and basic Layer 3 routing features.c3750-ipservicesk9-tar.122-25.SEB4.tar
Catalyst 3750 IP services cryptographic image and device manager files.
This image has the Kerberos, SSH, Layer 2+, and full Layer 3 features.c3750-advipservicesk9-tar.122-25.SEB4.tar
Catalyst 3750 advanced IP services image, cryptographic file, and device manager files.
This image has all the IP services image (formerly known as the EMI) features and the capability for unicast routing of IPv6 packets.c3560-ipbase-tar.122-25.SEB4.tar
Catalyst 3560 IP base image file and device manager files.
This image has Layer 2+ and basic Layer 3 routing features.c3560-ipservices-tar.122-25.SEB4.tar
Catalyst 3560 IP services image and device manager files.
This image has both Layer 2+ and full Layer 3 routing features.c3560-ipbasek9-tar.122-25.SEB4.tar
Catalyst 3560 IP base cryptographic image and device manager files.
This image has the Kerberos, SSH, and Layer 2+, and basic Layer 3 routing features.c3560-ipservicesk9-tar.122-25.SEB4.tar
Catalyst 3560 IP services cryptographic image and device manager files. This image has the Kerberos, SSH, Layer 2+, and full Layer 3 features.
c3560-advipservicesk9-tar.122-25.SEB4.tar
Catalyst 3560 advanced IP services image, cryptographic file, and device manager files.
This image has all the IP services image (formerly known as the EMI) features and the capability for unicast routing of IPv6 packets.c2970-lanbase-tar.122-25.SEB4.tar
Catalyst 2970 image file and device manager files.
This image has Layer 2+ features.c2970-lanbasek9-tar.122-25.SEB4.tar
Catalyst 2970 cryptographic image file and device manager files.
This image has the Kerberos and SSH features.
1 SSH = Secure Shell
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
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
Step 2
http://www.cisco.com/public/sw-center/sw-lan.shtml
To download the image for a Catalyst 2970 switch, click Catalyst 2970 software. To obtain authorization and to download the cryptographic software files, click Catalyst 2970 3DES Cryptographic Software.
To download the IP services image (formerly known as the EMI) or IP base image (formerly known as the SMI) files for a Catalyst 3560 switch, click Catalyst 3560 software. To obtain authorization and to download the cryptographic software files, click Catalyst 3560 3DES Cryptographic Software.
To download the IP services image (formerly known as the EMI) or IP base image (formerly known as the SMI) files for a Catalyst 3750 switch, click Catalyst 3750 software. To obtain authorization and to download the cryptographic software files, click Catalyst 3750 3DES Cryptographic Software.
Caution
to 1 minute to upgrade the first time that the new software is loaded. Do not power cycle the switch during the bootloader upgrade.
Step 3
For more information, refer to Appendix B in the software configuration guide for this release.
Step 4
Step 5
Switch# ping tftp-server-addressFor more information about assigning an IP address and default gateway to the switch, refer to the software configuration guide for this release.
Step 6
Switch# archive download-sw /overwrite /reload tftp:[[//location]/directory]/image-name.tarThe /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/c3750-ipservices-tar.122-25.SEB.tarYou can also download the image file from the TFTP server to the switch and keep the current image by replacing the /overwrite option with the /leave-old-sw option.
Recovering from a Software Failure
For recovery procedures, see the "Troubleshooting" chapter in the software configuration guide for this release.
Installation Notes
You can assign IP information to your switch by using these methods:
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Note
Note
New Features
These sections describe the new supported hardware and the new software features provided in this release:
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New Hardware Features
There are no new hardware features for this release. For a list of all supported hardware, see the "Hardware Supported" section.
New Software Features
This release contains these new Catalyst 3750, 3560, and 2970 switch features or enhancements (available in all software images):
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This release contains these new Catalyst 3750 and 3560 switch features or enhancements (available in all software images):
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Minimum Cisco IOS Release for Major Features
Table 6 lists the minimum software release required to support the major features of the Catalyst 3750, 3560, and 2970 switches.
Table 6 Catalyst 3750, 3560, and 2970 Switch Features and the Minimum Cisco IOS Release Required
Support for configuring private-VLAN ports on interfaces that are configured for dynamic ARP inspection (IP base image [formerly known as the SMI] only)
12.2(25)SEB
3750, 3560, 2970
Support for IP source guard on private VLANs (IP base image [formerly known as the SMI] only)
12.2(25)SEB
3750 and 3560
IGMP leave timer
12.2(25)SEB
3750, 3560, 2970
IGMP snooping querier
12.2(25)SEA
3750, 3560, 2970
Advanced IP services
12.2(25)SEA
3750, 3560
Support for DSCP transparency
12.2(25)SE
3750, 3560, 2970
Support for VLAN-based QoS1 and hierarchical policy maps on SVIs2
12.2(25)SE
3750, 3560, 2970
Device manager
12.2(25)SE
3750, 3560, 2970
IEEE 802.1Q tunneling and Layer 2 protocol tunneling
12.2(25)SE
3750, 3560
Layer 2 point-to-point tunneling and Layer 2 point-to-point tunneling bypass
12.2(25)SE
3750, 3560
Support for SSL version 3.0 for secure HTTP communication (cryptographic images only)
12.2(25)SE
3750, 3560, 2970
Support for configuring private-VLAN ports on interfaces that are configured for dynamic ARP inspection (IP services image [formerly known as the EMI] only)
12.2(25)SE
3750 and 3560
Support for IP source guard on private VLANs (IP services image [formerly known as the EMI] only)
12.2(25)SE
3750 and 3560
Cisco intelligent power management to limit the power allowed on a port, or pre-allocate (reserve) power for a port.
12.2(25)SE
3750 and 3560
IEEE 802.1x accounting and MIBs (IEEE 8021-PAE-MIB and CISCO-PAE-MIB)
12.2(20)SE
3750, 3560, 2970
Dynamic ARP inspection (IP services image [formerly known as the EMI] only)
12.2(20)SE
3750, 3560
Flex Links
12.2(20)SE
3750, 3560, 2970
Software upgrade (device manager or Network Assistant only)
12.2(20)SE
3750, 3560, 2970
IP source guard (IP services image [formerly known as the EMI] only)
12.2(20)SE
3750, 3560
Private VLAN (IP services image [formerly known as the EMI] only)
12.2(20)SE
3750, 3560
SFP module diagnostic management interface
12.2(20)SE
3750, 3560, 2970
Switch stack offline configuration
12.2(20)SE
3750
Stack-ring activity statistics
12.2(20)SE
3750
Smartports macros
12.2(18)SE
3750, 3560, 2970
1 QoS = quality of service
2 SVIs = switched virtual interfaces
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:
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Cisco IOS Limitations
Unless otherwise noted, these limitations apply to the Catalyst 3750, 3560, and 2970 switches:
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Configuration
These are the configuration limitations:
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This problem occurs under these conditions:
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The workaround is to reconfigure the static IP address. (CSCea71176 and CSCdz11708)
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1.
2.
3.
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No workaround is necessary; these are the designed behaviors. (CSCed50819)
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However, when dynamic ARP inspection is not enabled and a jumbo MTU is configured, ARP and RARP packets are correctly bridged in hardware. (CSCed79734)
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The workaround is to configure the port for 10 Mbps and half duplex or to connect a hub or a nonaffected device to the switch. (CSCed39091)
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When you enter the show ip arp inspection log privileged EXEC command, the log entries from all switches in the stack are moved to the switch on which you entered the command.
There is no workaround. (CSCed95822)
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The workaround is to enter the no switchport block unicast interface configuration command on that specific interface. (CSCee93822)
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There is no workaround. This is a cosmetic error and does not affect the functionality of the switch. (CSCef59331)
Ethernet
These are the Ethernet limitations:
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These are the workarounds:
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For more information, enter CSCea77032 in the Bug Toolkit at this URL:
http://www.cisco.com/pcgi-bin/Support/Bugtool/home.pl
Fallback Bridging
These are the fallback bridging limitations:
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HSRP
This is the Hot Standby Routing Protocol (HSRP) limitation:
When the active switch fails in a switch cluster that uses HSRP redundancy, the new active switch might not contain a full cluster member list. The workaround is to ensure that the ports on the standby cluster members are not in the spanning-tree blocking state. To verify that these ports are not in the blocking state, see the "Configuring STP" chapter in the software configuration guide. (CSCec76893)
IP
These are the IP limitations:
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IP Telephony
These are the IP telephony limitations:
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The workaround for networks with pre-standard powered devices is to leave the maximum wattage set at the default value (15.4 W). You can also configure the maximum wattage for the port for no less than the value the powered device reports as the power consumption through CDP messages. For networks with IEEE Class 0, 3, or 4 devices, do not configure the maximum wattage for the port at less than the default 15.4 W (15,400 milliwatts). (CSCee80668)
Management
CiscoWorks is not supported on the Catalyst 3750-24FS switch at this time.
MAC Addressing
This is the MAC addressing limitation:
(Catalyst 3750 or 3560 switches) When a MAC address is configured for filtering on the internal VLAN of a routed port, incoming packets from the MAC address to the routed port are not dropped. (CSCeb67937)
Multicasting
These are the multicasting limitations:
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There is no workaround. (CSCec20128)
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The switchport block multicast interface configuration command is only applicable to non-IP multicast traffic.
There is no workaround. (CSCee16865)
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The workaround is to enter the clear ip mroute privileged EXEC command on the interface. (CSCef42436)
QoS
These are the quality of service (QoS) limitations:
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Routing
These are the routing limitations:
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%SYS-2-MALLOCFAIL: Memory allocation of 4252 bytes failed from 0x179C80, alignment 0Pool: I/O Free: 77124 Cause: Memory fragmentationAlternate Pool: None Free: 0 Cause: No Alternate poolThis error message means there is a temporary memory shortage that normally recovers by itself. You can verify that the switch stack has recovered by entering the show cef line user EXEC command and verifying that the line card states are up and sync. No workaround is required because the problem is self-correcting. (CSCea71611)
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The workaround is to change any one of the listed conditions. (CSCed53633)
SPAN and RSPAN
These are the SPAN and Remote SPAN (RSPAN) limitations.
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This is a hardware limitation and only applies to these switches (CSCdy72835):
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This is a hardware limitation and only applies to these switches (CSCdy81521):
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This is a hardware limitation and only applies to these switches (CSCea72326):
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Stacking (Catalyst 3750 switch stack only)
These are the Catalyst 3750 switch stack limitations:
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There is no workaround. (CSCed54150)
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The workaround is to complete the MAC address update by entering the clear arp privileged EXEC command. (CSCed62409)
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Private VLAN is enabled or disabled on a switch stack, depending on whether or not the stack master is running the IP services image (formerly known as the EMI) or the IP base image (formerly known as the SMI):
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This occurs after a stack master re-election when the previous stack master was running the IP services image (formerly known as the EMI) and the new stack master is running the IP base image (formerly known as the SMI). The stack members are configured with private VLAN, but any new switch that joins the stack will have private VLAN disabled.
These are the workarounds. Only one of these is necessary:
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This is the expected behavior of the offline configuration (provisioning) feature. There is no workaround. (CSCee12431)
Trunking
These are the trunking limitations:
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VLAN
These are the VLAN limitations:
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The workaround is to reduce the number of VLANs or trunks. (CSCeb31087)
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There is no workaround. (CSCed71422)
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The workaround is to define another policy-map name for the second-level policy-map with the same configuration to be used for another policy-map. (CSCef47377)
Device Manager Limitations
When you are prompted to accept the security certificate and you click No, you only see a blank screen, and the device manager does not launch.
The workaround is to click Yes when you are prompted to accept the certificate. (CSCef45718)
Important Notes
These sections describe the important notes related to this software release for the Catalyst 3750, 3560, and 2970 switches:
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Switch Stack Notes
These notes apply to switch stacks:
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Cisco IOS Notes
These notes apply to Cisco IOS software:
•
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In Cisco IOS Release 12.2(18)SE and later, you can only use the logging on and then the no logging console global configuration commands to disable logging to the console. (CSCec71490)
Device Manager Notes
These notes apply to the device manager:
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From Microsoft Internet Explorer:
1.
2.
3.
4.
5.
•
Beginning in privileged EXEC mode, follow these steps to configure the HTTP server interface:
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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 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:
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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, 3560, and 2970 switches:
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You cannot ping a Layer 3 interface that has a Network Address Translation (NAT) configuration.
There is no workaround.
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Disabling OSPFv3 causes a memory leak.
There is no workaround.
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If the per-VLAN QoS per-port policer policy-map is already attached to a VLAN switched virtual interface (SVI), do not modify the second level (port-level) policy-map. If you modify the policy-map by removing the policer while it is still attached, an error message appears, and the policy-map is detached by the switch. The policer cannot be re-applied back to that policy-map.
The workaround is to redefine the second-level (port level) policy map if the policy map has already been detached by the system.
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When IEEE 802.1x is enabled on one or more ports of a member switch and you enter the show dot1x all privileged EXEC command, the command output does not have IEEE 802.1x information about ports on the member switches.
The workaround is to use the show dot1x interface privileged EXEC command to display the information for a specific interface.
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In a switch stack with Catalyst 3750 switches running Cisco IOS Release 12.2(20)SE4 or Cisco IOS Release 12.2(25)SEA, if the main power supply of a member switch or a redundant power system (RPS) connected to the member switch fails, the switch stack does not generate a ciscoEnvMonMIBNotificationPrefix trap.
However, if the internal power supply of the stack master fails or the RPS status changes, the stack master sends the appropriate trap. If a power supply fails on a member switch, the stack master sends a trap that the RPS is not available. You can use the show env all privileged EXEC command to determine if the power supply of the member switch or the RPS has failed.
The workaround is to configure the trap in CLI using the snmp-server enable traps envmon supply privileged EXEC command. Reboot the slave switch by using the reload slot switch number privileged EXEC command.
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In an multiple spanning-tree (MST) region in which Switch 1 is connected to Switch 2 and
Switch 2 is connected to Switch 3, if Switch 2 has a root port and a designated port in MST
instance 2, the root port flaps. The designated port is not synchronized with the other switches in the MST region, and the convergence of the port from the blocking state to the learning state is slow.The workaround is to modify the switch priority to a lower value so that the Switch 2 becomes the root switch for the MST instances 0 and 2.
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If an IEEE 802.1x client configured for both machine and user authentication is connected to a Catalyst 3750, 3560, 3550, or 2970 switch running Cisco IOS Release 12.2(25)SE and RADIUS VLAN assignment is used only for the machine authentication, the user might take 2 to 5 minutes to authenticate.
Use one of these workarounds:
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Resolved Caveats
These sections describe the caveats have been resolved in this release. Unless otherwise noted, these resolved caveats apply to the Catalyst 3750, 3560, and 2970 switches:
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Resolved IOS Caveats in Cisco IOS Release 12.2(25)SEB4
These Cisco IOS caveats were resolved:
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Cisco IOS may permit arbitrary code execution after exploitation of a heap-based buffer overflow vulnerability. Cisco has included additional integrity checks in its software, as further described below, that are intended to reduce the likelihood of arbitrary code execution.
Cisco has made free software available that includes the additional integrity checks for affected customers.
This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20051102-timers.shtml.
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Through normal software maintenance processes, Cisco is removing deprecated functionality. These changes have no impact on system operation or feature availability.
Resolved IOS Caveats in Cisco IOS Release 12.2(25)SEB3
This caveat was resolved:
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Cisco Internetwork Operating System (IOS) software is vulnerable to a Denial of Service (DoS) and potentially an arbitrary code execution attack from a specifically crafted IPv6 packet. The packet must be sent from a local network segment. Only devices that have been explicitly configured to process IPv6 traffic are affected. Upon successful exploitation, the device may reload or be open to further exploitation.
Cisco has made free software available to address this vulnerability for all affected customers.
More details can be found in the security advisory that is posted at http://www.cisco.com/warp/public/707/cisco-sa-20050729-ipv6.shtml.
Resolved IOS Caveats in Cisco IOS Release 12.2(25)SEB2
These Cisco IOS caveats were resolved:
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Remote Authentication Dial In User Service (RADIUS) authentication on a device that is running certain versions of Cisco Internetworking Operating System (IOS) and configured with a fallback method to none can be bypassed.
Systems that are configured for other authentication methods or that are not configured with a fallback method to none are not affected.
Only the systems that are running certain versions of Cisco IOS are affected.
Not all configurations using RADIUS and none are vulnerable to this issue. Some configurations using RADIUS, none and an additional method are not affected.
Cisco has made free software available to address this vulnerability. There are workarounds available to mitigate the effects of the vulnerability.
Refer to the Security Advisory at the following URL for more details
http://www.cisco.com/warp/public/707/cisco-sa-20050629-aaa.shtml
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When you use the cns config retrieve global configuration command, the switch now gets the configuration of a routing device.
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When a switch is running Border Gateway Protocol (BGP) and is peering with other Layer 3 devices, the switch no longer causes other peering devices to reset their BGP sessions if the switch sends BGP advertisements with an AS-path length that is 255 or greater.
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While starting, a PoE switch running Cisco IOS Release 12.2(25)SEB1 no longer stops and restarts.
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If a network scanner is connected to a switch and the number of AAA accounting-request and access-request packets received by the switch port exceeds the ingress buffer size, the ingress interface no longer becomes wedged.
Resolved IOS Caveats in Cisco IOS Release 12.2(25)SEB1
These Cisco IOS caveats were resolved:
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If switch stack with more than five switches reloads or RMON is configured on the stack members, the switches now start correctly and no longer remain in the initializing state.
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When you enter the show cdp neighbor detail privileged EXEC command, your switch no longer restarts if it is one of these switches:
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Resolved IOS Caveats in Cisco IOS Release 12.2(25)SEB
These Cisco IOS caveats were resolved:
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After you enable VLAN-based QoS on a physical port, the previous configuration with the mls qos cos override interface configuration command is removed. The setting to override the packet CoS value is still in effect when you disable VLAN-based QoS.
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A document that describes how the Internet Control Message Protocol (ICMP) could be used to perform a number of Denial of Service (DoS) attacks against the Transmission Control Protocol (TCP) has been made publicly available. This document has been published through the Internet Engineering Task Force (IETF) Internet Draft process, and is entitled "CMP Attacks Against TCP" (draft-gont-tcpm-icmp-attacks-03.txt).
These attacks, which only affect sessions terminating or originating on a device itself, can be of three types:
1. Attacks that use ICMP "hard" error messages
2. Attacks that use ICMP "fragmentation needed and Don't Fragment (DF) bit set" messages, also known as Path Maximum Transmission Unit Discovery (PMTUD) attacks
3. Attacks that use ICMP "source quench" messagesSuccessful attacks may cause connection resets or reduction of throughput in existing connections, depending on the attack type.
Multiple Cisco products are affected by the attacks described in this Internet draft.
Cisco has made free software available to address these vulnerabilities. In some cases there are workarounds available to mitigate the effects of the vulnerability.
This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20050412-icmp.shtml.
The disclosure of these vulnerabilities is being coordinated by the Centre for the Protection of National Infrastructure (CPNI). CPNI has been created by the merger of the National Security Advice Centre (NSAC) and the National Infrastructure Security Co-ordination Centre (NISCC). CPNI is working with multiple vendors whose products are potentially affecte. Its posting can be found at:
http://www.cpni.gov.uk/Products/advisories.aspx
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A document that describes how the Internet Control Message Protocol (ICMP) could be used to perform a number of Denial of Service (DoS) attacks against the Transmission Control Protocol (TCP) has been made publicly available. This document has been published through the Internet Engineering Task Force (IETF) Internet Draft process, and is entitled "ICMP Attacks Against TCP" (draft-gont-tcpm-icmp-attacks-03.txt).
These attacks, which only affect sessions terminating or originating on a device itself, can be of three types:
1. Attacks that use ICMP "hard" error messages
2. Attacks that use ICMP "fragmentation needed and Don't Fragment (DF) bit set" messages, also known as Path Maximum Transmission Unit Discovery (PMTUD) attacks
3. Attacks that use ICMP "source quench" messagesSuccessful attacks may cause connection resets or reduction of throughput in existing connections, depending on the attack type.
Multiple Cisco products are affected by the attacks described in this Internet draft.
Cisco has made free software available to address these vulnerabilities. In some cases there are workarounds available to mitigate the effects of the vulnerability.
This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20050412-icmp.shtml.
The disclosure of these vulnerabilities is being coordinated by the National Infrastructure Security Coordination Centre (NISCC), based in the United Kingdom. NISCC is working with multiple vendors whose products are potentially affected. Its posting can be found at: http://www.niscc.gov.uk/niscc/docs/re-20050412-00303.pdf?lang=en.
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When a class map of an attached policy map has its match condition removed and is then re-applied, free memory is no longer lost.
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When QoS is enabled, bursty and TCP-based applications no longer have significant performance degradation due to unexpected packet drops on some of the egress queues.
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Both sides of a link no longer stay in the loop-inconsistent state under these conditions:
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When spanning-tree logging is enabled on a stack of four or more switches, several CPUHOG traceback messages no longer appear if the stack master is reloaded.
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If a combination of VACLs and per-port access control lists (PACLs) are configured in a switch stack such that the TCAM is full and the PACL does not fit into the TCAM, if a master-switch change occurs, an assert message no longer appears stating that the old and new port label for the PACL are the same. A traceback message no longer appears after the assert message.
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A switch stack no longer generates unnecessary topology change notifications (TCNs) under these conditions:
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Documentation Updates in Cisco IOS Release 12.2(25)SEB
These are the updates to the product documentation that occurred in Cisco IOS Release 12.2(25)SEB.
Updates to the Software Configuration Guides
This section contains these updates to the switch software configuration guides:
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Configuring Interface Characteristics for the Catalyst 3750 Switch
This information was added to the "Configuration Guidelines" section of the "Configuring Interface Speed and Duplex Mode" section in the Catalyst 3750 Switch Software Configuration Guide:
100BASE-FX ports operate only at 100 Mbps in either full- or half-duplex mode and do not support autonegotation.
Unsupported CLI Commands
In Cisco IOS Release 12.1(11)AX and later, the transmit-interface type number interface configuration command is not supported.
In Cisco IOS Release 12.2(25)SEA and later, these commands are not supported:
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Supported MIBs
In Appendix A, "Supported MIBs," the "Using FTP to Access the MIB Files" section was revised. This is the correct procedure.
You can obtain each MIB file by using this procedure:
Step 1
Note
Step 2
Step 3
Step 4
Step 5
Step 6
Port Security Updates
The port security section was changed in the "Configuring Port-Based Traffic Control" chapter to include port security on voice VLANs. These sections are revised:
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Port Security Configuration Guidelines
Follow these guidelines when configuring port security:
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Note
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Table 7 summarizes port security compatibility with other port-based features.
Table 7 Port Security Compatibility with Other Switch Features
No
Trunk port
Yes
Dynamic-access port3
No
Routed port (Catalyst 3750 and 3560 only)
No
SPAN source port
Yes
SPAN destination port
No
EtherChannel
No
Tunneling port (Catalyst 3750 and 3560 only)
Yes
Protected port
Yes
IEEE 802.1x port
Yes
Voice VLAN port4
Yes
Private VLAN port (Catalyst 3750 and 3560 only)
Note
No
IP source guard (Catalyst 3750 and 3560 only)
Yes
Dynamic ARP5 inspection (Catalyst 3750 and 3560 only)
Yes
Flex Links
Yes
1 DTP = Dynamic Trunking Protocol
2 A port configured with the switchport mode dynamic interface configuration command.
3 A VLAN Query Protocol (VQP) port configured with the switchport access vlan dynamic interface configuration command.
4 You must set the maximum allowed secure addresses on the port to two plus the maximum number of secure addresses allowed on the access VLAN.
5 ARP = Address Resolution Protocol
Enabling and Configuring Port Security
Beginning in privileged EXEC mode, follow these steps to restrict input to an interface by limiting and identifying MAC addresses of the stations allowed to access the port:
This example shows how to enable sticky port security on a port, to manually configure MAC addresses for data VLAN and voice VLAN, and to set the total maximum number of secure addresses to 20 (10 for data VLAN and 10 for voice VLAN).
Switch(config)# interface FastEthernet1/0/1Switch(config-if)# switchport access vlan 21Switch(config-if)# switchport mode accessSwitch(config-if)# switchport voice vlan 22Switch(config-if)# switchport port-securitySwitch(config-if)# switchport port-security maximum 20Switch(config-if)# switchport port-security violation restrictSwitch(config-if)# switchport port-security mac-address stickySwitch(config-if)# switchport port-security mac-address sticky 0000.0000.0002Switch(config-if)# switchport port-security mac-address 0000.0000.0003Switch(config-if)# switchport port-security mac-address sticky 0000.0000.0001 vlan voiceSwitch(config-if)# switchport port-security mac-address 0000.0000.0004 vlan voiceSwitch(config-if)# switchport port-security maximum 10 vlan accessSwitch(config-if)# switchport port-security maximum 10 vlan voiceIGMP Updates
The configurable IGMP leave timer was added to the "Configuring IGMP Snooping" chapter in this release. These sections describe the timer:
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Understanding the IGMP Configurable-Leave Timer
In Cisco IOS Release 12.2(25)SEA and earlier, the IGMP snooping leave time was fixed at 5 seconds. If membership reports were not received by the switch before the query response time expired, a port was removed from the multicast group membership. However, some applications require a leave latency of less than 5 seconds.
In Cisco IOS Release 12.2(25)SEB and later, you can configure the time that the switch waits after sending a group-specific query to determine if hosts are still interested in a specific multicast group. The IGMP leave response time can be configured from 100 to 5000 milliseconds. The timer can be set either globally or on a per-VLAN basis. The VLAN configuration of the leave time overrides the global configuration.
IGMP Leave Timer Guidelines
Follows these guidelines when configuring the IGMP leave timer:
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Configuring the IGMP Leave Timer
Beginning in privileged EXEC mode, follow these steps to configure the IGMP leave timer:
Use the no ip igmp snooping last-member-query-interval global configuration command to globally reset the IGMP leave timer to the default setting (1000 milliseconds).
Use the no ip igmp snooping vlan vlan-id last-member-query-interval global configuration command to remove the configured IGMP leave-time setting from the specified VLAN.
For more information about commands that support the IGMP configurable leave time, see these sections:
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QoS Updates
The default QoS egress queue settings for Queue 2 changed in Cisco IOS Release 12.2(25)SEB. These are the new settings for Queue 2:
Table 8 Default Egress Queue Configuration
Buffer allocation
25 percent
25 percent
25 percent
25 percent
WTD drop threshold 1
100 percent
200 percent
100 percent
100 percent
WTD drop threshold 2
100 percent
200 percent
100 percent
100 percent
Reserved threshold
50 percent
50 percent
50 percent
50 percent
Maximum threshold
400 percent
400 percent
400 percent
400 percent
SRR shaped weights (absolute) 1
25
0
0
0
SRR shared weights 2
25
25
25
25
1 A shaped weight of zero means that this queue is operating in shared mode.
2 One quarter of the bandwidth is allocated to each queue.
Updates to the Command Reference
These sections describe the commands that were added or updated in the command reference for this release:
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clear port-security
Use the clear port-security privileged EXEC command on the switch stack or on a standalone switch to delete from the MAC address table all secure addresses or all secure addresses of a specific type (configured, dynamic, or sticky) on the switch or on an interface.
clear port-security {all | configured | dynamic | sticky} [[address mac-addr | interface interface-id] [vlan {vlan-id | {access | voice}}]]
Syntax Description
Defaults
No default is defined.
Command Modes
Privileged EXEC
Command History
12.2(25)SEA
This command was introduced.
12.2(25)SEB
The access and voice keywords were added.
Examples
This example shows how to clear all secure addresses from the MAC address table:
Switch# clear port-security allThis example shows how to remove a specific configured secure address from the MAC address table:
Switch# clear port-security configured address 0008.0070.0007This example shows how to remove all the dynamic secure addresses learned on a specific interface:
Switch# clear port-security dynamic interface gigabitethernet1/0/1This example shows how to remove all the dynamic secure addresses from the address table:
Switch# clear port-security dynamicYou can verify that the information was deleted by entering the show port-security privileged EXEC command.
Related Commands
ip igmp snooping last-member-query interval
Use the ip igmp snooping last-member-query-interval global configuration command to enable the Internet Group Management Protocol (IGMP) configurable-leave timer globally or on a per-VLAN basis. Use the no form of this command to return the IGMP configurable-leave timer to the default setting.
ip igmp snooping vlan vlan-id last-member-query-interval time
no ip igmp snooping vlan vlan-id last-member-query-interval
Syntax Description
vlan-id
(Optional) Specify a VLAN; the range is 1 to 4094 (available only in privileged EXEC mode).
time
Interval time out in seconds. The range is 100 to 5000 milliseconds.
t
Defaults
The default timeout setting is 1000 milliseconds.
Command History
Usage Guidelines
When IGMP snooping is globally enabled, IGMP snooping is enabled on all the existing VLAN interfaces. When IGMP snooping is globally disabled, IGMP snooping is disabled on all the existing VLAN interfaces.
Configuring the leave timer on a VLAN overrides the global setting.
The IGMP configurable leave time is only supported on devices running IGMP Version 2.
The configuration is saved in NVRAM.
Examples
This example shows how to globally enable the IGMP leave timer for 2000 milliseconds:
Switch# configure terminalSwitch(config)# ip igmp snooping last-member-query-interval 2000Switch(config)# endThis example shows how to configure the IGMP leave timer for 3000 milliseconds on VLAN 1:
Switch# configure terminalSwitch(config)# ip igmp snooping vlan 1 last-member-query-interval 3000Switch(config)# endThis example shows how to globally reset the IGMP leave timer to the default setting:
Switch# configure terminalSwitch(config)# no ip igmp snooping last-member-query-intervalSwitch(config)# endThis example shows how to remove the configured IGMP leave timer on VLAN 1. The globally configured leave timer is then applied to VLAN 1:
Switch# configure terminalSwitch(config)# no ip igmp snooping vlan 1 last-member-query-intervalSwitch(config)# endTo verify your settings, enter the show ip igmp snooping privileged EXEC command.
Related Commands
show ip igmp snooping
Note
Use the show ip igmp snooping user EXEC command to display the Internet Group Management Protocol (IGMP) snooping configuration of the switch or the VLAN.
show ip igmp snooping [groups | mrouter | querier] [vlan vlan-id] [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
User EXEC
The vlan vlan-id keyword is available only in privileged EXEC mode.
Command History
Usage Guidelines
Use this command to display snooping configuration for the switch or for a specific VLAN.
Although visible in the output display, output lines for topology change notification (TCN) and source-only learning are not valid.
Use the show ip igmp snooping querier command to display the IGMP version and IP address of a detected device that sends IGMP query messages, which is also called a querier. A subnet can have multiple multicast routers but has only one IGMP querier. In a subnet running IGMPv2, one of the multicast routers is elected as the querier. The querier can be a Layer 3 switch.
The show ip igmp snooping querier command output also shows the VLAN and interface on which the querier was detected. If the querier is the switch, the output shows the Port field as Router. If the querier is a router, the output shows the port number on which the querier is learned in the Port field.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show ip igmp snooping vlan 1 command. It shows snooping characteristics for a specific VLAN.
This is an example of output from the show ip igmp snooping command:
Switch> show ip igmp snoopingGlobal IGMP Snooping configuration:-----------------------------------IGMP snooping : EnabledIGMPv3 snooping (minimal) : EnabledReport suppression : EnabledTCN solicit query : DisabledTCN flood query count : 2Last member query interval : 100Vlan 1:--------IGMP snooping :EnabledImmediate leave :DisabledMulticast router learning mode :pim-dvmrpSource only learning age timer :10Last member query interval :100CGMP interoperability mode :IGMP_ONLYVlan 2:--------IGMP snooping :EnabledImmediate leave :DisabledMulticast router learning mode :pim-dvmrpSource only learning age timer :10CGMP interoperability mode :IGMP_ONLYLast member query interval : 333<output truncated>This is an example of output from the show ip igmp snooping vlan 1 command:
Switch# show ip igmp snooping vlan 1Global IGMP Snooping configuration:-----------------------------------IGMP snooping : EnabledIGMPv3 snooping (minimal) : EnabledReport suppression : EnabledTCN solicit query : DisabledTCN flood query count : 2Last member query interval : 100Vlan 1:--------IGMP snooping :EnabledImmediate leave :DisabledMulticast router learning mode :pim-dvmrpSource only learning age timer :10Last member query interval : 100CGMP interoperability mode :IGMP_ONLYThis is an example of output from the show ip igmp snooping mrouter vlan 1 command:
Note
Switch# show ip igmp snooping mrouter vlan 1Vlan ports---- -----1 Fa0/2(static), Fa0/3(dynamic)This is an example of output from the show ip igmp snooping group vlan 1 command:
Switch# show ip igmp snooping group vlan 1Vlan Group Version Port List---------------------------------------------------------1 229.2.3.4 v3 fa0/1 fa0/31 224.1.1.1 v2 fa0/8This is an example of output from the show ip igmp snooping querier command:
Switch> show ip igmp snooping querierVlan IP Address IGMP Version Port---------------------------------------------------1 172.20.50.11 v3 fa0/12 172.20.40.20 v2 Router
Related Commands
show version
This note was added to the show version user EXEC command in the switch command reference:
Note
switchport port-security
Use the switchport port-security interface configuration command without keywords on the switch stack or on a standalone switch to enable port security on the interface. Use the keywords to configure secure MAC addresses, sticky MAC address learning, a maximum number of secure MAC addresses, or the violation mode. Use the no form of this command to disable port security or to set the parameters to their default states.
switchport port-security [mac-address mac-address [vlan {vlan-id | {access | voice}}] | mac-address sticky [mac-address | vlan {vlan-id | {access | voice}}]] [maximum value [vlan {vlan-list | {access | voice}}]]
no switchport port-security [mac-address mac-address [vlan {vlan-id | {access | voice}}] | mac-address sticky [mac-address | vlan {vlan-id | {access | voice}}]] [maximum value [vlan {vlan-list | {access | voice}}]]
switchport port-security [aging] [violation {protect | restrict | shutdown}]
no switchport port-security [aging] [violation {protect | restrict | shutdown}]
Syntax Description
Defaults
The default is to disable port security.
When port security is enabled and no keywords are entered, the default maximum number of secure MAC addresses is 1.
The default violation mode is shutdown.
Sticky learning is disabled.
Command Modes
Interface configuration
Command History
Usage Guidelines
A secure port has these limitations:
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A security violation occurs when the maximum number of secure MAC addresses are in the address table and a station whose MAC address is not in the address table attempts to access the interface or when a station whose MAC address is configured as a secure MAC address on another secure port attempts to access the interface.
If you enable port security on a voice VLAN port and if there is a PC connected to the IP phone, you should set the maximum allowed secure addresses on the port to more than 1.
When a secure port is in the error-disabled state, you can bring it out of this state by entering the errdisable recovery cause psecure-violation global configuration command, or you can manually re-enable it by entering the shutdown and no shut down interface configuration commands.
Setting a maximum number of addresses to one and configuring the MAC address of an attached device ensures that the device has the full bandwidth of the port.
When you enter a maximum secure address value for an interface, this occurs:
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Sticky secure MAC addresses have these characteristics:
•
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•
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Examples
This example shows how to enable port security on a port and to set the maximum number of secure addresses to 5. The violation mode is the default, and no secure MAC addresses are configured.
Switch(config)# interface gigabitethernet 2/0/2Switch(config-if)# switchport mode accessSwitch(config-if)# switchport port-securitySwitch(config-if)# switchport port-security maximum 5This example shows how to configure a secure MAC address and a VLAN ID on a port.
Switch(config)# interface gigabitethernet 2/0/2Switch(config-if)# switchport mode trunkSwitch(config-if)# switchport port-securitySwitch(config-if)# switchport port-security mac-address 1000.2000.3000 vlan 3This example shows how to enable sticky learning and to enter two sticky secure MAC addresses on a port:
Switch(config)# interface gigabitethernet 2/0/2Switch(config-if)# switchport port-security mac-address stickySwitch(config-if)# switchport port-security mac-address sticky 0000.0000.4141Switch(config-if)# switchport port-security mac-address sticky 0000.0000.000fYou can verify your settings by using the show port-security privileged EXEC command.
Related Commands
Documentation Updates in Cisco IOS Release 12.2(25)SEA
These are the updates to the product documentation that occurred in Cisco IOS Release 12.2(25)SEA:
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Correction to the Software Configuration Guides
This is a correction to the software configuration guides for this release:
The "Configuring a System Name and Prompt" section and the "Configuring a System Prompt" section of the "Administering the Switch" chapter incorrectly state that you can manually configure the prompt global configuration command. The switches do not support this command. You should ignore this information in printed and online copies of the software configuration guides.
Updates for the Software Configuration Guides
These are updates to the software configuration guides for this release:
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Use the ip dhcp snooping binding privileged EXEC command when you are testing or debugging the switch.
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To stop using the database agent and bindings file, use the no ip dhcp snooping database global configuration command.
Updates for the Command Reference
The description and usage guidelines for the ip dhcp snooping database global configuration command are incorrect. This is the correct information:
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Related Documentation
These documents provide complete information about the Catalyst 3750, 3560, and 2970 switches and are available at Cisco.com:
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You can order printed copies of documents with a DOC-xxxxxx= number from the Cisco.com sites and from the telephone numbers listed in the "Obtaining Documentation" section.
These documents provide complete information about the Catalyst 3750 switches:
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These documents provide complete information about the Catalyst 3560 switches:
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These documents provide complete information about the Catalyst 2970 switches:
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For other information about related products, see these documents:
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Obtaining Documentation
Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.
Cisco.com
You can access the most current Cisco documentation at this URL:
http://www.cisco.com/techsupport
You can access the Cisco website at this URL:
You can access international Cisco websites at this URL:
http://www.cisco.com/public/countries_languages.shtml
Product Documentation DVD
Cisco documentation and additional literature are available in the Product Documentation DVD package, which may have shipped with your product. The Product Documentation DVD is updated regularly and may be more current than printed documentation.
The Product Documentation DVD is a comprehensive library of technical product documentation on portable media. The DVD enables you to access multiple versions of hardware and software installation, configuration, and command guides for Cisco products and to view technical documentation in HTML. With the DVD, you have access to the same documentation that is found on the Cisco website without being connected to the Internet. Certain products also have .pdf versions of the documentation available.
The Product Documentation DVD is available as a single unit or as a subscription. Registered Cisco.com users (Cisco direct customers) can order a Product Documentation DVD (product number DOC-DOCDVD=) from the Ordering tool or Cisco Marketplace.
Cisco Ordering tool:
http://www.cisco.com/en/US/partner/ordering/
Cisco Marketplace:
http://www.cisco.com/go/marketplace/
Ordering Documentation
Beginning June 30, 2005, registered Cisco.com users may order Cisco documentation at the Product Documentation Store in the Cisco Marketplace at this URL:
http://www.cisco.com/go/marketplace/
Cisco will continue to support documentation orders using the Ordering tool:
•
http://www.cisco.com/en/US/partner/ordering/
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http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm
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Documentation Feedback
You can rate and provide feedback about Cisco technical documents by completing the online feedback form that appears with the technical documents on Cisco.com.
You can send comments about Cisco documentation to bug-doc@cisco.com.
You can submit comments by using the response card (if present) behind the front cover of your document or by writing to the following address:
Cisco Systems
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883We appreciate your comments.
Cisco Product Security Overview
Cisco provides a free online Security Vulnerability Policy portal at this URL:
http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html
From this site, you can perform these tasks:
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A current list of security advisories and notices for Cisco products is available at this URL:
If you prefer to see advisories and notices as they are updated in real time, you can access a Product Security Incident Response Team Really Simple Syndication (PSIRT RSS) feed from this URL:
http://www.cisco.com/en/US/products/products_psirt_rss_feed.html
Reporting Security Problems in Cisco Products
Cisco is committed to delivering secure products. We test our products internally before we release them, and we strive to correct all vulnerabilities quickly. If you think that you might have identified a vulnerability in a Cisco product, contact PSIRT:
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An emergency is either a condition in which a system is under active attack or a condition for which a severe and urgent security vulnerability should be reported. All other conditions are considered nonemergencies.
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In an emergency, you can also reach PSIRT by telephone:
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Tip
Never use a revoked or an expired encryption key. The correct public key to use in your correspondence with PSIRT is the one linked in the Contact Summary section of the Security Vulnerability Policy page at this URL:
http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html
The link on this page has the current PGP key ID in use.
Obtaining Technical Assistance
Cisco Technical Support provides 24-hour-a-day award-winning technical assistance. The Cisco Technical Support & Documentation website on Cisco.com features extensive online support resources. In addition, if you have a valid Cisco service contract, Cisco Technical Assistance Center (TAC) engineers provide telephone support. If you do not have a valid Cisco service contract, contact your reseller.
Cisco Technical Support & Documentation Website
The Cisco Technical Support & Documentation website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies. The website is available 24 hours a day, at this URL:
http://www.cisco.com/techsupport
Access to all tools on the Cisco Technical Support & Documentation website requires a Cisco.com user ID and password. If you have a valid service contract but do not have a user ID or password, you can register at this URL:
http://tools.cisco.com/RPF/register/register.do
Note
Submitting a Service Request
Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3 and S4 service requests are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Service Request Tool provides recommended solutions. If your issue is not resolved using the recommended resources, your service request is assigned to a Cisco engineer. The TAC Service Request Tool is located at this URL:
http://www.cisco.com/techsupport/servicerequest
For S1 or S2 service requests or if you do not have Internet access, contact the Cisco TAC by telephone. (S1 or S2 service requests are those in which your production network is down or severely degraded.) Cisco engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.
To open a service request by telephone, use one of the following numbers:
Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)
EMEA: +32 2 704 55 55
USA: 1 800 553-2447For a complete list of Cisco TAC contacts, go to this URL:
http://www.cisco.com/techsupport/contacts
Definitions of Service Request Severity
To ensure that all service requests are reported in a standard format, Cisco has established severity definitions.
Severity 1 (S1)—Your network is "down," or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.
Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your business operation are negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.
Severity 3 (S3)—Operational performance of your network is impaired, but most business operations remain functional. You and Cisco will commit resources during normal business hours to restore service to satisfactory levels.
Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or configuration. There is little or no effect on your business operations.
Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is available from various online and printed sources.
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http://www.cisco.com/go/marketplace/
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http://www.cisco.com/go/iqmagazine
or view the digital edition at this URL:
http://ciscoiq.texterity.com/ciscoiq/sample/
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http://www.cisco.com/en/US/products/index.html
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http://www.cisco.com/discuss/networking
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http://www.cisco.com/en/US/learning/index.html
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
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