Cisco Cat4500 Quad Sup VSS ISSU IOS Upgrade

[Eli Kagan]

Hi all,

I have a rather old Cat4507R+E pair, running on four Sup7e as a VSS, IOS-XE version 3.8.8E.

I'd like to understand what's the right way of doing an ISSU on a quad sup system. I am planing to go to version 3.8.10E unless someone has a better suggestion.

Sharing your first hand experience would be greatly appreciated.

Thanks,

Eli

[Reza Sharifi]

Hi,

Have a look at this document. It has a step-by-step procedure for VSS upgrades on the 4500 series.

http://www.firewall.cx/cisco-technical-knowledgebase/cisco-switches/952-cisco-switches-4500-supervisor-engine-ios-upgrade.html

HTH

[Eli Kagan]

Reza, the document you suggest doesn't talk about quad-sup VSS system nor does it talk about Cisco ISSU process. So no, not very helpful. But thanks anyway.

Cheers

-- ek

[balaji.bandi]

here is the issu upgrade :(in general) - dual or quad not much difference:

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/XE3-8-0E/15-24E/configuration/guide/xe-380-configuration/vss.html#40730

Guidelines :

1. read the release notes. understand the caveats.

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/release/note/ol-38xe-4500e.html#pgfId-1374012

2. Copy the configuration out of the box.

3. get consoled to sup cards in case if you require any logs and look at the process

4. upgrade in maintenance window - plan also backup and revovery plan.