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Thursday, September 22, 2011

How to build a stack WS-C3750X-24S-E and WS-C3750X-24T-L?

We have a problem with a stack // two switches.

WS-C3750X-24S-E & WS-C3750X-24T-L

Both switches have the same IOS.


WS-C3750X-24S-E
**********************
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 30 WS-C3750X-24 15.0(1)SE C3750E-UNIVERSALK9-M

WS-C3750X-24T-L
*********************
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 30 WS-C3750X-24S 15.0(1)SE C3750E-UNIVERSALK9-M

The reason for the problem is different major version

*Mar 1 00:00:25.358: %STACKMGR-5-MAJOR_VERSION_MISMATCH: Major Version Mismatch (Local 1 - Received 6) with neighbor-0
*Mar 1 00:00:25.358: %STACKMGR-5-MAJOR_VERSION_MISMATCH: Major Version Mismatch (Local 1 - Received 6) with neighbor-1

WS-C3750X-24S-E
**********************
Switch Master/ Mac Address Version Current
Number Member (maj.min) State
-----------------------------------------------------------
1 Master 0007.7d3c.b280 1.46 Ready

WS-C3750X-24T-L
*********************
Switch Master/ Mac Address Version Current
Number Member (maj.min) State
-----------------------------------------------------------
1 Master 44d3.ca7d.1000 6.46 Ready


How can we upgrade the WS-C3750X-24S-E to the same major version??

We would recommend to stay away from 15.0(1)SE IOS. It's got a memory leak like you can't imagine.

Try to use the 12.2(58)SE2 and see if you have the same issue.

Looks like one of your switch's product code ends with an "L". This model has an IP Base License while the other model with the "E" has a higher license and this could be the issue.


The Cisco Catalyst 3750-X Series Switches with LAN Base feature set can only stack with other Cisco Catalyst 3750-X Series LAN Base switches. A mixed stack of LAN Base switch with IP Base or IP Services features set is not supported.
Please click here for Cisco documentation.

You can upgrade the LAN Base to IP Base on the WS-C3750X-24T-L. it will work. All the other switches in stack should have the same ip base license and IOS. Click here to download the Licensing document from Cisco.


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