[c-nsp] Upgrading IOS core on a 3750 Stack

[Peter Rathlev]

On Sun, 2009-08-02 at 06:18 -0700, Bill Blackford wrote:
> The subject line says it all.
> 
> I have some questions regarding how the upgrade works.
>  
>   1. Do I only upgrade the master?

Technically no, but the master might be able to auto-upgrade the
members.

>   2. If not, how do I upgrade the other switches in the stack?

You can upload software to flash1:, flash2: etc. and set the boot
variables with "boot system switch 2 flash:/asdf.bin". Remember that
each switch sees the flash as just "flash:" when booting, so set the
boot variable accordingly.

>   3. Should everything be running the same exact code(base vs.
>      ipservices)?
> 
> <snip>
> Switch  Ports  Model          SW Version      SW Image
> ------  -----  -----          ----------      ----------
> *    1  52     WS-C3750-48P   12.2(25)SEE1    C3750-IPSERVICESK9-M
>      2  52     WS-C3750-48P   12.2(25)SEE1    C3750-IPBASEK9-M
>      3  52     WS-C3750-48P   12.2(25)SEE1    C3750-IPBASEK9-M
>      4  52     WS-C3750-48P   12.2(25)SEE1    C3750-IPSERVICESK9-M
> </snip>

I actually thought potential members with another feature set than the
master wouldn't become active, but if that's part of a "show version" it
seems they can.

I would recommend running the same feature set on all switches. I don't
know how different feature sets handle a master failover, but only
problems come to mind when looking at it.

Regards,
Peter