[c-nsp] c3560 L3 throughput with BGP
lukasz at bromirski.net
Tue Oct 30 16:06:54 EDT 2007
Adrian Minta wrote:
> On 3550 average CPU load was below 1%. On 3560 the load was always above
> 5% with spikes up to 60%.
> After some googling I change the sdm template. The load went down, but
> above 5%. I put extensive ACL's on all the routed port and finally CPU
> stabilized to around 5%. The load is caused by "IP Input" and "HL3U bkgrd".
IP Input as always is responsible for processing traffic that
hardware/CEF isn't capable of processing.
'HL3U bkgrd' is actually managing a bunch of things (hardware ARP
throttling, proxy ARP, ICMP redirect, TTL ICMP error generation, etc).
So, I really suspect You did change switches but in meantime Your
network also changed traffic characteristics and that's why You see
the change in load.
"I am a part of everything that I have | Łukasz Bromirski
read." -- Theodore Roosevelt | http://lukasz.bromirski.net
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