Re: Cisco 6500: Show ip traffic output

I just did a "show ip traffic" on one of my 6509's and see a lot of encapsulation failed errors myself

SV-Dist-1#show ip traffic | in encap
  Drop: 19611389 encapsulation failed, 0 unresolved, 0 no adjacency

According to Cisco this usually indicates that the router had no ARP request entry and therefore did not send a datagram

http://www.cisco.com/en/US/docs/ios/12_2/ipaddr/command/reference/1rfip2.html

________________________________
From: ftt <femi0802_at_googlemail.com>
To: ccielab_at_groupstudy.com
Sent: Tue, January 5, 2010 7:48:42 AM
Subject: Cisco 6500: Show ip traffic output

Hi Experts,

Can anyone shed some light as to why I would be experiencing high
"encapsulation failed" from the output below:

Cat6500#sh ip traffic
IP statistics:
  Rcvd: 2965708483 total, 142308047 local destination
         0 format errors, 0 checksum errors, 1382644 bad hop count
         0 unknown protocol, 3 not a gateway
         0 security failures, 4 bad options, 31476 with options
  Opts: 4 end, 4 nop, 0 basic security, 4 loose source route
         0 timestamp, 0 extended security, 4 record route
         0 stream ID, 0 strict source route, 31468 alert, 0 cipso, 0 ump
         0 other
  Frags: 0 reassembled, 0 timeouts, 0 couldn't reassemble
         110 fragmented, 0 couldn't fragment
  Bcast: 563099 received, 0 sent
  Mcast: 69898530 received, 41229188 sent
  Sent: 114776924 generated, 2761575942 forwarded
  *Drop: 33062932 encapsulation failed*, 7488 unresolved, 0 no
adjacency *<---this
value keeps going up which indicates that there could be unresolved routes.
* 5 no route, 0 unicast RPF, 0 forced drop
         0 options denied
  Drop: 0 packets with source IP address zero
  Drop: 0 packets with internal loop back IP address

Regards

FTT

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Received on Tue Jan 05 2010 - 07:55:26 ART