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Cisco Bug: CSCuk42211 - Trace doesnt show peer address anymore

Last Modified

Jan 31, 2017

Products (1)

  • Cisco IOS

Known Affected Releases

12.0S

Description (partial)

Symptoms:
An interface may not be able to properly trace its own IP address.

Consider the following topology:
 UUT-(x.x.x.x)----serial----(x.x.x.y)-peer

UUT sends a trace to x.x.x.x (itself)

Expected behaviour 
------------------
UUT#trace x.x.x.x

Type escape sequence to abort.
Tracing the route to x.x.x.x

  1 x.x.x.y 16 msec 16 msec 16 msec
  2 x.x.x.x 40 msec 32 msec *


Incorrect behaviour (Symptom)
-------------------------
UUT#trace x.x.x.x

Type escape sequence to abort.
Tracing the route to x.x.x.x

  1 x.x.x.x 16 msec 16 msec *


Conditions:
This symptom is observed on a point-to-point interface (such as a serial interface, 
Packet-over-SONET [POS] interface, etc.) of a line card or port adapter that is
installed in a Cisco router that is running a recent 12.0S image (more recent that 
120-24.4.S). Tracing its own Serial (or other P2P address) IP address doesn't display 
the peer address anymore.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
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