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How to debug ICMP-Echo?

I really only see echo replies but no echos if I do a "debug ip icmp".

  • Other Network Infrastructure Subjects
2 REPLIES
Anonymous
N/A

Re: How to debug ICMP-Echo?

You would need "debug ip packet detail"

to see all ICMP messages. Careful,

this can be very verbose output.

Cisco Employee

Re: How to debug ICMP-Echo?

"debug ip packet detail" will kill the router if it is in production and traffic load.

I would recommend to create an extended access-list for source/destination you are pinging.

eg;

access-list 101 permit icmp host 11.11.11.11 host 22.22.22.22

debug ip packet 101 detail

The above will only show detailed ICMP debugging between the 2 hosts specified in the ACL.

HTH

R/Yusuf

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