It's true. Bad things can happen. Primary one is buss stall. They are not supposed to happen anymore but there are bugIDs out there that prove they do. During buss stall we can't do forwarding lookups to PFC (pretty sure DFC lookups still work). Even worse is that during buss stall interrupts are disabled so packets can't be punted to the control plane and BFD packets which are generated in interrupt context can't be sent.

Usually these things happen for a short enough period of time that the effects are minor or completely unnoticed unless you are running some things with tight timers like BFD tuned down, OSPF fast hellos, etc

-Ben


On Nov 10, 2010, at 5:06 PM, Seth Mattinen wrote:

On 11/10/2010 14:01, John Neiberger wrote:
I'm just curious to hear your thoughts on OIR on this platform. Is
this something that you prefer to avoid? Do you have any OIR-related
horror stories you'd like to share?

Also known as "online insert and reboot". Anything can happen and
frequently does, so it's best to assume there will be downtime and plan
a maintenance window.

~Seth
_______________________________________________
cisco-nsp mailing list  [email protected]
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/

_______________________________________________
cisco-nsp mailing list  [email protected]
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/

Reply via email to