[c-nsp] Cisco 7301 running at 99% CPU doing iBGP update

[Marian Durkovic]

On Thu, Jun 29, 2006 at 11:03:54PM -0400, Rodney Dunn wrote:
> I've never yet seen anone put that in the lab and prove there is
> transit packet loss when this happens.
> 
> Traceroutes going to process level is one thing. Packet switched
> under interrupt is another.

Well, not sure about 7301, but on Cat6500 running the -SXF train
during BGP scanner runs the box certainly drops some of the process-switched
packets due to SPD queue overflows. This can be reproduced by e.g.
configuring TTL threshold for IP multicast (which forces multicast packets
to process-switching path) and sending e.g. 8 Mbps video stream.


	With kind regards, 

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----   Marian Durkovic                       network  manager         ----
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----   Slovak Technical University           Tel: +421 2 524 51 301   ----
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----   812 43 Bratislava, Slovak Republic    E-mail/sip: md at bts.sk    ----
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