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New Member

Unable to stack two 3750x

Hi,

In a nutshell:-

I have 2 x 3750x switches both running identical IOS -  12.2(55)SE5 & both connected using stackwise cables.

WS-C3750X-12S is priority 15 & switch number 1

ws-c3750x-24 is priority 1 & is switch number 2

I have enabled each switch stack port via "switch X stack port X enable"

I have replaced the stackwise cables & phsyically checked them to ensure they are tight. Reloaded on numerous occassions but still no sign of the stack appearing?

They appear as seperate Masters....

I'm thinking it maybe something to do with the IOS revision as I've seen a similar post so next step maybe to downgrade/upgrade 12.2(55)SE5.....Any help here would be appreciated?

Everyone's tags (1)
4 REPLIES
Hall of Fame Super Gold

Unable to stack two 3750x

3750X-12S & 3750X-24S are supported from 12.2(55)SE5 so your IOS is good.

Can you post the entire bootup process?

New Member

Unable to stack two 3750x

During POST I get the following:-

*Mar  1 00:00:24.335: %STACKMGR-5-MAJOR_VERSION_MISMATCH: Major Version Mismatch (Local 6 - Received 1) with neighbor-0

*Mar  1 00:00:24.335: %STACKMGR-5-MAJOR_VERSION_MISMATCH: Major Version Mismatch (Local 6 - Received 1) with neighbor-1

Checking the stack versions using “sh platform stack manager all” I notice differences see below:-

Switch#sh platform stack manager all | b Stack State Machine View

Stack State Machine View

==============================================================

         

Switch   Master/   Mac Address          Version    Current

Number   Member                          (maj.min)  State  

-----------------------------------------------------------

2        Master    7cad.74e5.4b80          6.45        Ready

Switch#sh platform stack manager all | b Stack State Machine View

Stack State Machine View

==============================================================

         

Switch   Master/   Mac Address          Version    Current

Number   Member                          (maj.min)  State  

-----------------------------------------------------------

1        Master    c08c.6028.ce80             1.45        Ready

Fibre switch is ipbase & copper switch is lanbase.

According to official Cisco doc I’ve found it states “Switches with different major version numbers are incompatible and cannot exist in the same switch stack

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750x_3560x/software/release/12.2_55_se/configuration/guide/swstack.html#wp1223384.

Now I need to align the stack versions the same…....but how is the question?

Hall of Fame Super Gold

Unable to stack two 3750x

Post the output to the command "sh version" from each switch.

New Member

Unable to stack two 3750x

License features were mis-matched. I quickly upgraded the license on the copper 3750X to ipbase then upon reload the switches formed the stack.

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