Good day everyone.
I have the problem with high CPU consumption by IP Input process. I have tried to beat this by myself according to troubleshooting high CPU load guide and troubleshooting high CPU load caused by IP Input process guide as well, but unfortunately with no success.
I have a Cisco 881 router (config without sensitive data and unrelated stuff is attached, also I've removed 94 ip dhcp pool entries, used for static DHCP assigning) and two SF-300/48 switches, each of them connected to router via interfaces FA0/0 and FA0/1 respectively. Interface FA0/4 is a WAN interface with 100 Mb/s link to the ISP.
I have tried connecting to the router only via my test notebook. Still, the maximum speed I've got is ~25 Mb/s download and ~65Mb/s upload. At the time of speed testing sh proc cpu command indicates 99%/34% CPU load. At normal (without any significant traffic load) CPU load rests at 16%/5%. I've attached sh proc cpu sorted command listing at the time of speed testing, too.
I am asking for your advice, and waiting for any assistance.
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