Stacking 3750 12port and 24 port switch "version mismatch'' Issue

[shanilkumar2003]

Hi

Im facing an issue with stacking two 3750, one 3750-24 port switch and 3750-12 port switches.  I have connected

"sw1-stack1 --> sw2-stack2" and

"sw1-stack2 -->swi2-stack1" 

but when powered on the switches, 3750-12port switch is not adding to stack and it showing "version mismatch" in sh switch output from the console of 3750-24port switch. also im not able to console directly to that switch (3750-12port).

I have verified im having same IOS on both switches.

flash:/update/c3750e-universalk9-mz.122-55.SE5/c3750e-universalk9-mz.122-55.SE5.bin"

flash:/c3750e-universalk9-mz.122-55.SE5/c3750e-universalk9-mz.122-55.SE5.bin"

Kindly help to resolve the issue

Thanks in Advance

Shanil

[Aninda Chatterjee]

Hi Shanil,

Could you post the following outputs please:

1. show version

2. show platform stack-manager all

Could you also specify the exact model of the switches that are being stacked together?

Regards,

Aninda

Message was edited by: Aninda Chatterjee

[shanilkumar2003]

Thank you Aninda.

i have the below model and i will get back to you with the show outputs at the earliest

WS-C3750X-12S-S

WS-C3750X-24T-S

is there any chance for stack protocol version micmatch even if we have same IOS?

Thanks

Shanil

[shanilkumar2003]

Dear Aninda,

There is software version mismatch in switches, please find below.  how can i resolve this issue by connecting from the stack itself and without removing the switches.

Switch Ports Model              SW Version            SW Image                

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

*    1 30    WS-C3750X-24       12.2(55)SE5           C3750E-UNIVERSALK9-M    

     2 0     WS-C3750X-12S      12.2(58)SE2           C3750E-UNIVERSALK9-M    

STACK#sh platform stack manager all
Switch/Stack Mac Address : e4d3.f15b.ee00
                                           H/W   Current
Switch#  Role   Mac Address     Priority Version  State
----------------------------------------------------------
*1       Master e4d3.f15b.ee00     1      1       Ready              
2       Member 10f3.11a7.8e00     1      2       Version Mismatch   

         Stack Port Status             Neighbors    
Switch#  Port 1     Port 2           Port 1   Port 2
--------------------------------------------------------
  1        Ok        Down               2      None
  2       Down        Ok              None       1

               Stack Discovery Protocol View
==============================================================

Switch   Active   Role    Current   Sequence   Dirty
Number                    State     Number     Bit
--------------------------------------------------------------------
--More--         1        TRUE    Master   Ready       025       FALSE
2        TRUE    Member   VerMis      024       FALSE

                 Stack State Machine View
==============================================================

Switch   Master/   Mac Address          Version    Current
Number   Member                          (maj.min)  State  
-----------------------------------------------------------
1        Master    e4d3.f15b.ee00          1.45        Ready    
2        Member    10f3.11a7.8e00          1.46        VerMis   

Last Conflict Parameters

Switch Master/ Cfgd Default Image H/W  # of    Mac Address  
Number Member  Prio Config   Type Prio Members                   
-----------------------------------------------------------------------

            Stack Discovery Protocol Counters
        Messages Sent                  Messages Recvd
        UP       DOWN                  UP        DOWN
--------------------------------------------------------
*1: 0000000290 0000000000          0000000000 0000000000
2: 0000000000 0000000000          0000000201 0000000000
3: 0000000000 0000000000          0000000000 0000000000
4: 0000000000 0000000000          0000000000 0000000000
5: 0000000000 0000000000          0000000000 0000000000
6: 0000000000 0000000000          0000000000 0000000000
7: 0000000000 0000000000          0000000000 0000000000
8: 0000000000 0000000000          0000000000 0000000000
9: 0000000000 0000000000          0000000000 0000000000

             Misc  Counters
   Counter                      Up          Down
---------------------------------------------------

Wrong Ver Number: Send:    0000000000    0000000000
Wrong Ver Number: Recv:    0000000000    0000000000
Missed Messages:           0000000000    0000000000
Orphaned Messages          0000000000    0000000000
--More--          Suppressed Messages        0000000000    0000000000
No Available Messages      0000000002    0000000000
Link Present               0000000004    0000000000
Link Not Present           0000000004    0000000001
Link RxReset               0000000014    0000000010
Link Sync Stuck Resets     0000000000    0000000000
Duplicates                 0000000153    0000000000
RAC Not OK Resets          0000000000
Switch# of last duplicate  0000000002
Sequence Number Failures   0000000000
RAC Not OK Resets          0000000000
Sync Not OK Resets         0000000000    0000000000
Switch# of last Failure:   256  Last Difference 0
Switch Number Conflicts    0
Stack Changes              8        
Int Stack Link changes     0
Int Stack Link state       0x0
Reciprocal Efficiency Changes: Upgrade 0, Downgrade 0
             Resource Counters
-------------------------------------------
Chunk Alloc's        0000000004
Chunk Free's         0000000003
Enqueue Failures:    0000000000
--More--          Null Queue Failures: 0000000000
Chunk Alloc Errors:  0000000000

           Stack State Machine Counters
   Messages Sent              Messages Recvd
-------------------------------------------------
*1: 0000000001                 0000000001
2: 0000000003                 0000000003
3: 0000000000                 0000000000
4: 0000000000                 0000000000
5: 0000000000                 0000000000
6: 0000000000                 0000000000
7: 0000000000                 0000000000
8: 0000000000                 0000000000
9: 0000000000                 0000000000

Thanks

Shanil

[murugananthamamir]

Hi Kumar,

Switches with the same major version number but a different minor version number are considered partially compatible. When you connect a partially compatible switch to a stack, the new switch might enter version-mismatch mode and not join the stack as a functional member. The current state in this case is also stack protocol versions(minor verson of the member switch is different from the master switch) is differed.

Mismatched or incompatible software license levels might prevent a Catalyst 3750 switch from joining a stack.

Plz check your switches enabled license orelase post the below commands.

show licese all

show version

Regards,

Amir

[shanilkumar2003]

Here issue is ios version
Mismatch. Is there any way to upgrade member switch image from master by retaining the stack. I think the auto upgrade is not hapoening in my case here

Thanks
Shanil

Sent from Cisco Technical Support iPhone App

[murugananthamamir]

Since the IOS both are same in both of the switches, auto upgrade is not an issue here.

I've requested you to check with the licese part on both the switches.

The above logs clearly depict that the problem is stack protocol versions only.

[shanilkumar2003]

Hi Amir,

Actually the IOS versions are not same, from the logs see the SW versions are different this may cause the stack protocol mismatch

Switch Ports Model SW Version SW Image

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

* 1 30 WS-C3750X-24   12.2(55)SE5   C3750E-UNIVERSALK9-M

2 0 WS-C3750X-12S     12.2(58)SE2     C3750E-UNIVERSALK9-M

how can i upgrade the ios by connecting itself in teh stack?

Regards

Shanil

[murugananthamamir]

Dear Kumar,

You can upgrade by the below steps.

Copy the Master IOS to the slave switch internally. this can be possible by,

copy flash:  flash2:

Flash or flash 1 is belongs to master switch's flash and flash2 would be denoting to slave switch.

Once upgradation done, you can verfy the flash checksum by "verify flash2:/md5 IOS file name"

Then set the boot variable by using

boot system switch all flash: command

Regards,

Amir

[shanilkumar2003]

Thank you amir. I will try this

Sent from Cisco Technical Support iPhone App

[shanilkumar2003]

I have disconnected stack and upgrdaed the member switch to the same IOS. and issue resolved.

Thanks

Shanil