are noticing a fairly high CPU load compared what we were used to on the older
3550's.
It looks like we are punting packets like crazy...
cpu-queue-frames retrieved dropped invalid hol-block stray
----------------- ---------- ---------- ---------- ---------- ----------
rpc 0 0 0 0 0
stp 234154 0 0 0 0
ipc 0 0 0 0 0
routing protocol 1871818 0 0 0 0
L2 protocol 208159 0 0 0 0
remote console 0 0 0 0 0
sw forwarding 14959846 0 0 0 0
host 305132 0 0 0 0
broadcast 1754197 0 0 0 0
cbt-to-spt 0 0 0 0 0
igmp snooping 369150 0 0 0 0
icmp 731133339 0 0 4 0
logging 0 0 0 0 0
rpf-fail 0 0 0 0 0
dstats 0 0 0 0 0
cpu heartbeat 2320747 0 0 0 0
I think crazy punting would go into the "sw forwarding" line (and
deliver high latency to your customers), but you appear to have a big
"icmp" line. Maybe you are just generating a lot of ICMP unreachables
for the usual reasons, and maybe this is more difficult for a 3400 than
it is for a 3550.
I would try to "deb plat cpu-queues software-fwd-q" (this is guaranteed
to be a heavy debug for your CPU) to see what kind of packets the CPU is
transmitting/receiving.
I know this is not much but hope this helps somehow.
Bergonz
--
Ing. Michele Bergonzoni - Laboratori Guglielmo Marconi S.p.a.
Phone:+39-051-6781926 e-mail: [email protected]
alt.advanced.networks.design.configure.operate
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