High values of CPU on our router.

Hi all,
we have router Cisco 3660 and we observe
last time high values of CPU on our
router. It happens only when we do backups. Maybe once per week.
CPU rises up to 90 % and big traffic is
only on interfaces from and where are
backups transmited. From our monitoring system we see on interfaces cca 30MB load.
So is it possible to tune this load?
Or should we upgrade IOS?
Any suggestions?
BR
jl

hi ali,
CEF is cisco express forwarding...its provide the very high speed switching of data...it maintain the FIB and aducancy table in order to achive the fast data transfer...FIB is same as our routing table and adjucany table havig hardware address binding...in CEF first packe to the destination is forwarded by the layer 3 software base lookup and then all the subsequence packet will send by the rewrite the packet using ASIC which make it faster...its also use full when you are having more cpu usage.. .
hope this will help you
rate this post if it helps
reagrds
Devang

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