02-19-2009 08:20 AM
Hi all,
Currently I am having an issue with 12406.
One of my primary 4 slot RE has failed over to 5 slot RE hot standby. Less 24 hours the 5 slot has switch over back to 4 again. Keep going like that within 3 days twice per day.
My question is when first attempt from 4 to 5, why 5 need to switch back 4 by itself? Is possible certain time frame, slot 5 detect or sense that 4 is stable, it will auto switch over? It doesnt make any sense to me because why switch over since slot 5 is running fine. If switch over 0-3s interrupt services.
I also support Juniper. It will switch over until i perform manual switch by command prompt.
Any ref for SSO behavior? I tried to find..no luck
02-19-2009 02:54 PM
Hi lawwm,
That is not normal behaviour. If the failed RP manages to reboot ok then it becomes the new standby and stays that way until either:
⢠A fault condition that causes the active RP to crash or reboot-automatic switchover
⢠The active RP is declared dead (not responding)-automatic switchover
⢠The CLI is invoked-manual switchover
Check the log. Also checkout "show redundancy" and it's various options.
Check that both RPs are running the same version of IOS.
Here's some further information:
http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/sso120s.html')">http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/sso120s.html
02-19-2009 06:51 PM
Stodd,
Thanks for your information and clarification.
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