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Cisco Bug: CSCur21901 - NSR not ready due to BGP AD LDP session not sync'ed

Last Modified

Sep 12, 2019

Products (7)

  • Cisco Carrier Routing System
  • Cisco ASR 9922 Router
  • Cisco ASR 9010 Router
  • Cisco ASR 9904 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9001 Router
  • Cisco ASR 9912 Router

Known Affected Releases

5.1.3.BASE 5.3.0.BASE

Description (partial) 

Symptom:
Customer may not get L2VPN NSR ready post RP failover. This is preventing the entire route to declare NSR readiness.
The problem can also be seen by doing a process restart of mpls_ldp process on standby RP.

Conditions:
The problem is seen with BGP AD with LDP signaling feature where there is only BGP AD PW on corresponding LDP session i.e no extra manual PW is configured over that same LDP session. That LDP session may be shared with L3 features.

The problem may happen on RP Failover or on mpls_ldp process restart on standby RP with above conditions.

Related Community Discussions

5.1.3 Feature Pack (FP) Content discussion board
This community page to share the content, delivery dates and more details on Feature Packs.   FP2 Content All DDTSs tracking changes in FP2. Features: ---------   Features CSCur18267: ASR9k - 512 Bundle Ethernet enhancement   Features CSCun46269: Need changes in LSPV and PI FIB to send engine type for hashing.   Features CSCur74985: BFD on bundle vlan not working on cluster after upgrade to 5.1.3   Features CSCun11455: Need changes in cpp ucode to send eng type for punt pkt.   Features CSCug63470: ...
Latest activity: Mar 15, 2016
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Bug Details Include

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