debug ip icmp-----ping command

Just to clarify, I'm running Dynamips(just in case someone thinks Dynamips is causing the problem)

I'm looking at icmp traffic with the debug ip icmp command, but I never get the assumed output.

For instance...

I ping the neighboring serial interface and only see ICMP echoes received, not ICMP echoes sent. The neighboring interface shows echoes replies sent, which is good.

Also every source on the internet says when you ping your own serial interface the icmp traffic crosses the serial link When I try to ping my own serial interface I only get traffic on my interface, not the neighboring router. I tried debug ip packet and debug ip icmp on the neighboring router and got nothing. I even checked the counters and show ip traffic.

If anyone can clarify this problem let me know...

Thanks, Paul

Reply to
Paul.Parish
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On Sat, 26 May 2007 19:08:11 -0700, Paul.Parish wrote:

This is normal - not sure why.

Works for me, if I turn in process switching on the interface.

Network#sh ip int brief | e down Interface IP-Address OK? Method Status Protocol Ethernet0/0 192.168.88.44 YES NVRAM up up Serial2/0 192.168.44.2 YES NVRAM up up Network# Network#deb ip pa det IP packet debugging is on (detailed) Network# Jun 5 23:27:13.182 AEST: IP: tableid=0, s=192.168.44.1 (Serial2/0), d=192.168.44.1 (Serial2/0), routed via RIB Jun 5 23:27:13.182 AEST: IP: s=192.168.44.1 (Serial2/0), d=192.168.44.1 (Serial2/0), len 100, redirected Jun 5 23:27:13.182 AEST: ICMP type=8, code=0 Jun 5 23:27:13.182 AEST: IP: tableid=0, s=192.168.44.2 (local), d=192.168.44.1 (Serial2/0), routed via RIB Jun 5 23:27:13.182 AEST: IP: s=192.168.44.2 (local), d=192.168.44.1 (Serial2/0), len 56, sending Jun 5 23:27:13.182 AEST: ICMP type=5, code=1 Jun 5 23:27:13.182 AEST: IP: s=192.168.44.1 (Serial2/0), d=192.168.44.1 (Serial2/0), g=192.168.44.1, len 100, forward Jun 5 23:27:13.182 AEST: ICMP type=8, code=0 Jun 5 23:27:13.202 AEST: IP: tableid=0, s=192.168.44.1 (Serial2/0), d=192.168.44.1 (Serial2/0), routed via RIB Jun 5 23:27:13.202 AEST: IP: s=192.168.44.1 (Serial2/0), d=192.168.44.1 (Serial2/0), len 100, redirected Jun 5 23:27:13.202 AEST: ICMP type=0, code=0 Jun 5 23:27:13.202 AEST: IP: s=192.168.44.1 (Serial2/0), d=192.168.44.1 (Serial2/0), g=192.168.44.1, len 100, forward Jun 5 23:27:13.202 AEST: ICMP type=0, code=0 Network#u all All possible debugging has been turned off Network# Network# Network#sh runn int s2/0 Building configuration...

Current configuration : 111 bytes ! interface Serial2/0 ip address 192.168.44.2 255.255.255.252 no ip route-cache serial restart-delay 0 end

Network#

Reply to
Martin Gallagher

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