Upgrade Cat6500 doc info

hjacquemin · ‎01-05-2009

Hello everyone,

I have successfully upgraded both 6509's, but the mentioned â€œ0 to 3 seconds switchover timeâ€ (SSO mode) in the â€œCatalyst 6000/6500 Series Switches with Redundant Supervisor Engines Software Image Upgrade Configuration Exampleâ€ was a little bit underestimated.

I experienced longer switchover due to a reset of all cards (exept the SUP720). This was a bit unexpected. Can you give any reason for this?

And will this happen again in a future upgrade?

We also wonder if the card rebooted at the same time or one per one?

Someone has a document who explained that?

Mark Yeates · ‎01-06-2009

Herve,

Are you running SSO/NSF? Running NSF along with SSO will dramatically cut down fail over times within your chassis. Please see the following link.

http://www.cisco.com/en/US/docs/solutions/Enterprise/Data_Center/DC_Infra2_5/DCInfra_7.html#wp1136155

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/prod_white_paper0900aecd801c5cd7.html

HTH,

Mark

hjacquemin · ‎01-07-2009

I already had this information, but I still have no info on what happens with the line cards during a â€œhigh availability software upgradeâ€â€¦

Do they reboot?

At the same time?

One after the other?

for information, I'm in SSO mode.

Thanks,

stierb · ‎01-08-2009

Your question is answered in the document you referenced (the document id should be 71585). The explanation is under step 12 of the Software Update/Native Mode section. To summarize, after you upgrade the standby sup, it will come up in RPR mode because the IOS versions don't match.

Will it happen in a future upgrade? Yes.

Also, the linecards all reset at the time the failover occurs.