[c-nsp] ISSU on SXF -> SXI

[Randy McAnally]

Thanks for verifying my suspicions... ISSU just seemed 'too good to be true'.
 RPR mode upgrade it is...

--
Randy

---------- Original Message -----------
From: Phil Mayers <p.mayers at imperial.ac.uk>
To: N/A
Cc: "cisco-nsp at puck.nether.net" <cisco-nsp at puck.nether.net>
Sent: Fri, 12 Feb 2010 15:06:36 +0000
Subject: Re: [c-nsp] ISSU on SXF -> SXI

> On 12/02/10 14:47, Rob Shakir wrote:
> >
> > This seems quite accurate to me.
> >
> > Our experience of ISSU has been terrible. We've found multiple bugs
> > related to it, and have found that -- in general -- we're much better
> > off in terms of service disruption with a "classic" upgrade (upgrade
> > secondary, reload peer, force failover, etc).
> >
> > Cisco advised us that it is unlikely that ISSU on 7600/6500 will meet
> > our requirements, and hence we are better off doing classic upgrades.
> > We've taken their advice, and will not be trying it again. I think
> 
> As it happens I just did a "half-test" on one of our boxes where I 
> did the "issu loadversion" so that I could see what it told me about 
> outage times - and all kinds of horrific messages started spraying 
> onto the console about missing ifindex values, IDB failures and so forth.
> 
> I quickly did an "issu abortversion"
> 
> Bah. Thanks a lot Cisco...
> 
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------- End of Original Message -------