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New Member

Software upgrade on box-to-box redundant CSS's

I am planning a software upgrade from version 5.00 Build 63 to version 6.1 on a pair of CSS 11150 devices running box-to-box redundancy.

Should both devices be upgraded at the same time, or can I split them and upgrade on consecutive weekends ?

2 REPLIES
Cisco Employee

Re: Software upgrade on box-to-box redundant CSS's

if it was 2 different 5.0 release, I would say ok.

But a 5.0 and a 6.1 release, it could be ok but that's not 100% sure.

Sorry, that's all I can say.

Maybe you could put both images on the CSS, boot the CSS out of 6.1 and configure them to reboot with 5.0 in case something wrong happens.

Gilles.

New Member

Re: Software upgrade on box-to-box redundant CSS's

I am in the same scenario as you describe? Did you ever find an upgrade procedure that minimizes downtime?

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