RE: Ping encapsulation failed

From: Scott Vermillion (scott_ccie_list@it-ag.com)
Date: Thu Nov 22 2007 - 17:49:10 ART


Hey Julio,

I personally would check the arp cache and focus on any problems found
there...

Regards,

Scott

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Julio Carrasco
Sent: Thursday, November 22, 2007 1:20 PM
To: ccielab@groupstudy.com
Subject: Ping encapsulation failed

Hello group,

I am pinging a directly connected IP address from Rack1R2, but I don4t reach
that address.
I have tried to do a debug ip packet, and this is the output.
the strange thing is that I am receiving RIP updates from 204.12.1.6, but I
cannot ping it due to a failed encapsulation.

Could anyone help e ?

thanks
julio

Rack1R2(config-router)#do ping 204.12.1.6

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 204.12.1.6, timeout is 2 seconds:

*Mar 1 00:17:07.651: IP: tableid=0, s=204.12.1.2 (local), d=204.12.1.6
(FastEthernet0/0), routed via RIB
*Mar 1 00:17:07.651: IP: s=204.12.1.2 (local), d=204.12.1.6
(FastEthernet0/0), len 100, sending
*Mar 1 00:17:07.651: IP: s=204.12.1.2 (local), d=204.12.1.6
(FastEthernet0/0), len 100, encapsulation failed.
*Mar 1 00:17:09.531: IP: s=204.12.1.2 (local), d=224.0.0.9
(FastEthernet0/0),
len 52, sending broad/multicast
*Mar 1 00:17:09.651: IP: tableid=0, s=204.12.1.2 (local), d=204.12.1.6
(FastEthernet0/0), routed via RIB
*Mar 1 00:17:09.651: IP: s=204.12.1.2 (local), d=204.12.1.6
(FastEthernet0/0), len 100, sending
*Mar 1 00:17:09.651: IP: s=204.12.1.2 (local), d=204.12.1.6
(FastEthernet0/0), len 100, encapsulation failed.
*Mar 1 00:17:11.651: IP: tableid=0, s=204.12.1.2 (local), d=204.12.1.6
(FastEthernet0/0), routed via RIB
*Mar 1 00:17:11.651: IP: s=204.12.1.2 (local), d=204.12.1.6
(FastEthernet0/0), len 100, sending
*Mar 1 00:17:11.651: IP: s=204.12.1.2 (local), d=204.12.1.6
(FastEthernet0/0), len 100, encapsulation failed.
*Mar 1 00:17:13.651: IP: tableid=0, s=204.12.1.2 (local), d=204.12.1.6
(FastEthernet0/0), routed via RIB
*Mar 1 00:17:13.651: IP: s=204.12.1.2 (local), d=204.12.1.6
(FastEthernet0/0), len 100, sending
*Mar 1 00:17:13.651: IP: s=204.12.1.2 (local), d=204.12.1.6
(FastEthernet0/0), len 100, encapsulation failed.
*Mar 1 00:17:15.651: IP: tableid=0, s=204.12.1.2 (local), d=204.12.1.6
(FastEthernet0/0), routed via RIB
*Mar 1 00:17:15.651: IP: s=204.12.1.2 (local), d=204.12.1.6
(FastEthernet0/0), len 100, sending
*Mar 1 00:17:15.651: IP: s=204.12.1.2 (local), d=204.12.1.6
(FastEthernet0/0), len 100, encapsulation failed.



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