01-05-2009 11:43 PM - edited 03-06-2019 03:15 AM
Hello everyone,
I have successfully upgraded both 6509's, but the mentioned â0 to 3 seconds switchover timeâ (SSO mode) in the âCatalyst 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?
01-06-2009 06:19 AM
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.
HTH,
Mark
01-07-2009 11:29 PM
I already had this information, but I still have no info on what happens with the line cards during a âhigh availability software upgradeââ¦
Do they reboot?
At the same time?
One after the other?
for information, I'm in SSO mode.
Thanks,
01-08-2009 01:29 AM
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.
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