Cisco Catalyst 5000 Series Switches

Field Notice: Token Ring Configuration May Be Lost when Upgrading Catalyst 5000 Supervisor Software

November 19, 1999

Products Affected




WS-X5030= WS-X5030

Catalyst 5000 Copper Token Ring Switching Module (16 port)


WS-X5031= WS-X5031

Catalyst 5000 Fiber Token Ring Switching Module (16 port)


Problem Description

When upgrading the Catalyst 5000 Supervisor software, the Token Ring configuration on the Supervisor may be corrupted or lost. This does not affect data integrity, but loss of configuration will cause communication failures.

The Token Ring configuration in the RSM module is not affected by this problem.


When upgrading Catalyst Supervisor software releases 4.5 or 5.x to later software versions, the configuration of the Token Ring environment may be corrupted or deleted. The table below defines the releases that display the symptoms of this problem.

Current version

Upgrade versions that will cause the problem

Problem symptoms

4.5(1), 4.5(2) or 4.5(3)


Loss of configuration

4.5(1), 4.5(2) or 4.5(3)

5.1(x) or 5.2(1)

Corruption of configuration

5.1(x) or 5.2(1)


Loss of configuration

Please see the Catalyst 4000, 5000, and 6000 Family Software Product Bulletin for more information on the release numbering and life cycle.

Problem Symptoms

Corruption or loss of existing token ring configuration. Loss of connectivity from and to token ring devices connected to the Catalyst 5000 undergoing the upgrade.


The workaround for this problem is to save the configuration, prior to the software upgrade, on the Flash card or ono a locally-attached TFTP server. Once the upgrade has been completed, clear the remaining configuration, then re-load the original configuration.

The instructions for copying the configuration to and from the Flash file system or TFTP server are available on CCO at:

The instructions for clearing the existing configuration are available on CCO at \

The solution is to ensure the following upgrade paths are used an upgrade is performed:

Current version

Upgrade release(s) without problem

Any 3.x

Any 3.x, 4.5(5) or higher, 5.2(2) or higher

4.5(1), 4.5(2), or 4.5(3)

4.5(5) or higher, 5.2(2) or higher

5.1(x) or 5.2(1)

5.2(2) or higher

Note:?There will still be a loss of the Token Ring configuration in this case. To perform the upgrade, please follow the workaround provided above.


To follow the bug ID link below and see detailed bug information, you must be a registered user and you must be logged in.




Token Ring config lost when upgrading from 4.5(3) to 4.5(4).

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods: