10-07-2010 03:03 AM - edited 03-06-2019 01:22 PM
Dear
We have very high cpu usage in cisco router 2821 which is casued by dyn DNS client service (consumed about 97%)
what do you suggest to reslove this issue identify why it happens
Thanks
Abdul Elah Al Tayeb
10-11-2010 07:09 AM
Hey Abdul,
Can you post a 'show tech' from this device along with 'show stack 51'? This problem can sometimes be caused if 'update dns' is configured and the server is updating at a more frequent pace than the client has requested. In some instances, configuring the following can eliminate the problem -
no ip dhcp update dns
This may require a reload after the command is configured to clear the condition. Thanks.
Brandon
10-12-2010 10:43 PM
Thanks for this information and I have used show stack command and it provide me with below output
This is output :-
Process 51: Dyn DNS Client
Stack segment 0x4399EBA8 - 0x439A0ED0
FP: 0x439A0C38, RA: 0x413A5D10
FP: 0x439A0C60, RA: 0x40B24554
FP: 0x439A0E98, RA: 0x41397304
FP: 0x439A0EB0, RA: 0x413972E8
What does this imply?
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