asked on

CISCO Router - Can't see debug packets

I think this is an easy one.

|PC|-----------E0|router 1|S0------------S1|router 2|S0-------------S0|router 3|E0
I have three routers with a static route between the two end ones. I turn on >debug ip packet and then I do a ping from the PC to E0 on Router 3. The ping works and all four packets are succesfull, but the debug only saw the first packet the first time I did the ping after a reboot on Router 1 and router 2 (router 3 is remote and can't see the console).

Any idea as to what is going on?

Thanks,

Bo

Les Moore

try using debug icmp
I'm assuming you are debugging on R1?

If you can telnet to R3, you can see the debug messages with this command:
router#term mon
This turns your vty sessions into a terminal monitor session and you can see all the debug information.

pedrow

and to turn it off :)

router# term no mon

bohdand

ASKER

Yes I am monitoring on R1 and I did try >debug ip icmp and still do not see the packets (but I do see the packets when I ping the E0 int on R1).

Thanks, I used the >term mon on R3 and I did see the packets there.

So as a recap I can see the ping packets from PC to R3-E0 on R3 but not on R1 or R2 with >debug ip icmp. The IP address I'm using is a private IP 192.168...

I did see it the very first time though.

Thanks Again

Bo

Les Moore

You probably saw the arp request the first time. Once the arp cache had the information, you never saw it again.

bohdand

ASKER

Les Moore

bohdand,
IMPORTANT: Do not use the browser refresh button to reload your question. You will re-post either your question
or your last comments. In the upper left corner of the page, under your login username, you will see a link
"reload this question". Use this link to re-load the Q without creating duplicate posts.

ASKER CERTIFIED SOLUTION

epylko

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

bohdand

ASKER

That was it.

Thanks,

Bo