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CPU IP INPUT %

Mavrick25
Level 1
Level 1

‎12-19-2007 11:37 AM - edited ‎03-03-2019 08:00 PM

Question:

I have a router that has received a spike in CPU% 74%.

it's a layer 2/3 switch to a L3 router with 1 1GB connection.

I am saying it has something to do with the routers routing configuration..

problem with static routes could this be the problem??

PR

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5 Replies 5

trueposmis
Level 1
Level 1

‎12-19-2007 12:13 PM

Do you have cef enabled?

0 Helpful

Mavrick25
Level 1
Level 1
In response to trueposmis

‎12-19-2007 01:45 PM

No, cef is not enabled.

why?

0 Helpful

mounir.mohamed
Level 7
Level 7

‎12-19-2007 12:15 PM

PUNT packets, process switching packets, Access-lists with LOG or log-input keyword can cause high utlization by IP INPUT process.

0 Helpful

Mavrick25
Level 1
Level 1
In response to mounir.mohamed

‎12-19-2007 01:48 PM

I was leaning towards that answer as well, but my colleagues are saying that there is something wrong with the routers routing config, something to do with Static routes..

they are wrong.. right?

0 Helpful

Danilo Dy
VIP Alumni
VIP Alumni
In response to Mavrick25

‎12-19-2007 06:21 PM

Hi,

Routing loop, too many ACL (also two ACL accidentally configured in one interface) are some factors that will cause high cpu util. Can you post the config and "show proc cpu"?

Regards,

Dandy

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