[c-nsp] upgrading stack of 3750E's

[Tony Varriale]

This is how I normally do it.

1) archive software to first switch /overwrite (from TFTP) without reload.
2) archive software to second switch /overwrite without reload.
3) reload slot 1
4) wait until switch 1 is operational and you are happy
5) reload slot 2

tv
----- Original Message ----- 
From: "Holemans Wim" <wim.holemans at ua.ac.be>
To: <cisco-nsp at puck.nether.net>
Sent: Monday, January 26, 2009 3:48 AM
Subject: [c-nsp] upgrading stack of 3750E's


> We are testing the following setup :
> 
> 65XX-VSS - etherchannel - 3750E stack (2 switches) - teaming enabled
> servers
> 
> 
> 
> This should give maximal uptime, overriding defects on the router or
> 3750E switches. We intend to use these switches in L2 mode only,
> managing them via the mgmt fa0 interface.
> 
> 
> 
> I'm now looking into the upgrading procedure for the stack, but I can't
> seem to find a way to do an upgrade in which at least of the 3750E's
> stays operational, thus minimalizing down time. As far as I can tell
> from the doc, there is no way to upgrade e.g. the master switch, have it
> reload (keeping the second switch operational), and after the master
> becomes operational, (auto-)upgrade the second switch. Am I missing
> something or is this scenario really not possible ?
> 
> 
> 
> Another scenario would be removing the switch from the stack (after
> bringing down all ports first via console), changing the ip address of
> the switch, bringing the mgmt port back online, do the upgrade, bring
> the power down, reconnect it to the stack and the power up it again.
> Given the fact that the stack cables are rather fragile, this doesn't
> seem the right way to do, unless it is possible to shut down the stack
> ports by a CLI command ?
> 
> 
> 
> Anyone suggestions, pointers to alternative upgrade procedures,...
> 
> 
> 
> Thanks,
> 
> 
> 
> Wim Holemans
> 
> 
> 
> Network Services University of Antwerp
> 
> Netwerkdienst Universiteit Antwerpen
> 
> 
> 
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