High CPU

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Apr 27th, 2007
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Hi Guys,


Our Customer have one 7600 that is presenting problem of performance. When I type "show proc cpu sorted" in the interface GE-WAn display the process "CEF Scanner" in 60%. What it is this process? which is its affectation?

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Danilo Dy Sun, 04/29/2007 - 07:01
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Hi,


What is your IOS version? Please post "show version" output.


CEF Scanner process computes new L2 adjacency when there is a MAC rewrite.


Dandy

wilsonsant Wed, 05/02/2007 - 04:12
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Hi Dandy,


It follows below the show version


The version is 12.2(18)SXF4


Thank You,


Wilson

guruprasadr Sun, 04/29/2007 - 23:12
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HI Wilson, [Pls Rate if Helps ! !]


We too had the same problem of over loaded CPU of 7206 VXR Router upto 85% in a Site.


After several Investigations, we already had "Netflow" implemented in our Routers. Noticed that Several Client IP's in BO has communicated to single IP in HO for particular service & initiated more than 1000 IP sessions. This made the CPU Load go High upto 85%


So, without any best analyser like "Netflow" you will not be able to Investigate & Identify the Root Cause for this Situation.


Pls Rate If Helps ! !


Best Regards,

Guru Prasad R

mohammedmahmoud Wed, 05/02/2007 - 04:46
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Hi,


I add my voice to Guru, enable Netflow on the interface and try to investigate any malicious traffic.


interface x

ip route-cache flow


and then do "sh ip cache flow".



HTH, please rate if it does help,

Mohammed Mahmoud.

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