[c-nsp] ISSU on VSS

[scott owens]

>
>   8. Re: VSS - Horror stories, show-stoppers,  other personal
>      experience? (Tony Varriale)
>

I am pretty sure Tony that when I took the VSS class at Networkers last June
in Las Vegas one of the benefits of the SXI4 code was that with dual sups
... you got ISSU.

I am so sure of it because that is what we did in the class ( it was held
the day before Networkers started ).

From
http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/vss.html

Quad-supervisor uplink forwarding provides these key features:
•eFSU upgrades— You can upgrade or downgrade your VSS system using ISSU.
See "Upgrading a VSS"
section<http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/vss.html#wp1169328>
for
more information about eFSU upgrades.

scott


> Message: 8
> Date: Fri, 17 Jun 2011 22:32:06 -0500
> From: Tony Varriale <tvarriale at comcast.net>
> To: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] VSS - Horror stories, show-stoppers,       other
>        personal experience?
> Message-ID: <4DFC1C36.2020600 at comcast.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> On 6/17/2011 1:51 PM, Murphy, William wrote:
> > We are running VSS for distribution layer switching in a campus
> environment
> > and have been quite pleased with it...  Benefits for us are
> simplification,
> > faster convergence and better performance (distribution of traffic)...
>  No
> > more STP blocking ports, MCE to access-layer so both links are utilized,
> > faster convergence, no need for HSRP, also our two 10G uplinks are
> > equal-cost even though they are connected to separate chassis...  It's
> > worked quite well except for ISSU...  We have attempted using ISSU to do
> > hitless IOS upgrades with maybe 20% success rate...
> >
> There is no ISSU on the 6500 platform and never will be.
>
> tv
>
>
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> End of cisco-nsp Digest, Vol 103, Issue 52
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