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Eli Kagan
Beginner

Cisco Cat4500 Quad Sup VSS ISSU IOS Upgrade

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

3 REPLIES 3
Reza Sharifi
Hall of Fame Expert

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

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
VIP Guru

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.

 

 

 

 

 

BB

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