[c-nsp] Odd behavior: OSPF on a physical port of an SVI

Ross Vandegrift ross at kallisti.us
Fri Mar 5 18:16:16 EST 2010


On Thu, Mar 04, 2010 at 10:25:27AM -0800, Rick Ernst wrote:
> A 7500 attached to one port (jack 6) will only form OSPF associations with
> 1-3 neighbors (out of about 30).

I've run into weird problems like this when module heatsinks failed.
Traffic would pass so long as the overheating hardware didn't mess it
up.  In my case, BGP would establish, but die out after TCP handshake.
I was able to ping with sufficiently small packets, but above a
certain size traffic would drop.

This was on a 6816-GBIC and the heatsink failure only affected one of
the FEs.  If I moved to a port on the other FE, things would work
normally.

Ross

-- 
Ross Vandegrift
ross at kallisti.us

"If the fight gets hot, the songs get hotter.  If the going gets tough,
the songs get tougher."
	--Woody Guthrie
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