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Cisco Bug: CSCun29482 - %ROUTING-FIB-5-ROUTE_UPDATE_DROP - LABEL-RECYCLING

Last Modified

May 25, 2020

Products (7)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco ASR 9922 Router
  • Cisco IOS XR Software
  • Cisco ASR 9010 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9001 Router
  • Cisco ASR 9912 Router

Known Affected Releases

5.2.0.BASE

Description (partial)

Symptom:
RP/0/RSP0/CPU0:Mar  3 16:19:10.009 : fib_mgr[221]: %ROUTING-FIB-5-ROUTE_UPDATE_DROP : FIB dropping route update: LABEL-RECYCLING: label=120734 new-prefix=192.0.48.0/24, tbl=red445, old-prefix=202.153.144.26/32, tbl=default,  lcnt=1, rt-src=6

This results in the new-prefix being incorrectly programmed in CEF or missing.

Conditions:
May occur under the following conditions:
- A /32 prefix (mentioned in old-prefix) is present as a result of an attached route in RIB out of a multi-access interface; and
- LDP has advertised the prefix such that a local label has been allocated for it; and
- An RP switchover has happened in the past where after switchover the prefix stopped being advertised for some reason.

Related Community Discussions

atached route
hello experts:   what is the meaning of "Having a  attached route in RIB " ? what is attached route ? does ii mean directly connected ?   Thanks  
Latest activity: Jul 25, 2015
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