IOS Version Compatibility for Stacking

[b.budd]

I have a 3 unit 2960S stack with each member running 12.2(55)SE5

I want to add a 4th unit running 12.2.(55)SE10

Are these considered the same or at least compatible versions (12.2.(55)) as far as stacking goes?  I really just want to be able to wr erase the new member and just pop it in the stack.

Thanks

[balaji.bandi]

All should be running same IOS code.

[b.budd]

So is 12.2.(55) the same as 12.2.(55)?

Does it matter if one is SE5 and the other is SE10?

[Jaderson Pessoa]

No, its run normally, i have an network with this version running..

[b.budd]

For what it's worth, I have another stack where one is running SE3 and the other SE5.  So I'm thinking the "SE" part doesn't matter as long as the IOS base is the same.

WS-C2960S-48FPS-L  12.2(55)SE3
WS-C2960S-48FPS-L  12.2(55)SE5

Thanks

[balaji.bandi]

Can you post the show platform stack manager all

i would suggest to read below document :

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/12-2_55_se/configuration/guide/3750xscg/swstack.html

[Jaderson Pessoa]

They are need has same ios version and same model.

[Dennis Mink]

if you pop that 4th member in, you will get a version mismatch,

if you have access to the existing stack copy the bin file using ftp or tftp and stick it on member 4 before you add it to the stack