[c-nsp] Speaking of OIR... what about 6500s?

[Greg Schwimer]

It's pretty good in most cases, so long as you don't insert/remove the 
module too slowly.  I've seen it happen where you begin to unseat the 
module and it gets stuck on some adjacent cabling, forcing you to pause 
during the removal process.  This caused a bus stall event, which 
basically caused the switch to stop forwarding all traffic for 3 
seconds.  This caused spanning tree to go nuts for a few seconds, and 
spiked the processor of the adjacent switches.  Not fun.

Believe it or not, powering the module down prior to this activity did 
not prevent the stall from occurring.

John Neiberger wrote:

>Since I'm coming in this weekend anyway, I offered to install an FWSM in
>our 6513 for someone. As I recall, the 6500s handle OIR a lot better
>than the 7500s. I seem to remember being told that I could go pop that
>blade in right now and I wouldn't run into a problem on the 6500. Is
>that true? What is the consensus regarding OIR with the high end
>Catalyst switches?
>
>Thanks,
>John
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