Hi all,
i have 2911 router, the problem is that since few months we are noticing that the cpu load increases suddenly from 40-50 percent to 90-99 percent. we have around 120 ipsec tunnels from the branches to this router and one by one many tunnels starts flapping during that time. i have checked also that there is no outstanding traffic from the branches and if i count that it does hardly reaches to 2Mbps, but the uplink between our router and ISP shows traffic more then 11Mbps, so during that time what i usually do i put limit on that link and the things settle for sometime and cpu load decreases. but after applying limits the cpu load decreases but still randomly branches start flapping. so who is consuming that extra 7-8Mbps of bandwidth during that time? how we can trace that which link is causing problem for us? and is there any permanent solution for that? do we have to upgrade our hardware as there are many tunnels?
the following two process are consuming cpu but it does not sums upto 90 percents as others are in .01
174 181960280 152713972 1191 13.59% 12.51% 10.69% 0 IP Input
325 63963084 56403152 1134 4.63% 4.72% 4.60% 0 Crypto IKEv2
