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Cisco Bug: CSCvt13484 - ASR9K: Bad bgp Received Label seen if injecting same prefix via subscriber first and then via static

Last Modified

Sep 02, 2020

Products (9)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco ASR 9910 Router
  • Cisco ASR 9922 Router
  • Cisco IOS XR Software
  • Cisco ASR 9010 Router
  • Cisco ASR 9904 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9001 Router
  • Cisco ASR 9912 Router

Known Affected Releases

6.4.2.BASE

Description (partial)

Symptom:
Received Label field incorrectly allocated when we redistribute into BGP a prefix via subscriber first and then via static:


show bgp vrf [vrf] [prefix] detail
.
.
Paths: (1 available, best #1)
  Not advertised to any peer
  Path #1: Received by speaker 0
  Flags: 0x4100000005040003, import: 0x80
  Not advertised to any peer
  Local
    10.110.0.230 from 0.0.0.0 (172.23.255.4)
      Received Label 167954720             <<<<<<<<<


The following tracebacks can sometimes appear:


fib_mgr[184]: %ROUTING-FIB-3-PLATF_UPD_FAIL : FIB platform update failed: Obj=DATA_TYPE_LABEL_INFO[ptr=92af0058,refc=0x1,flags=0x8000438] Action=CREATE Proto=mpls. Cerr=Invalid argument  : pkg/bin/fib_mgr : (PID=483436) :  -Traceback= 4eda5a44 40458790 402fe7bc 402ff2dc 40307a5c 401378c0 40138934 4025c6c8 40261a34 4012a3b4 4012c5bc 4013cd60 40159354 4015ade4 402670f8 4025c6c8

Conditions:
Redistribute a prefix into BGP via subscriber first and then static.
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