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Cisco Bug: CSCur22750 - Asr9k-5.1.3 --BFD in INIT state on BE with mpls ip-ttl-propagate disable

Last Modified

Jul 09, 2020

Products (8)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco IOS XR Software
  • 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 5.2.2.BASE

Description (partial)

Symptom:
BFD stuck in INIT state after upgrade to to SIT image 5.2.2.25I.

With "mpls ip-ttl-propagate disable" ASR9k sends BFD packets with TTL value of 254 instead of 255.

The neighbor devices see bfd packet with invalid TTL and drop it.

F340.03.13-ME-3600X-2#sh bfd drops
BFD Drop Statistics
                        IPV4    IPV6    IPV4-M  IPV6-M  MPLS_PW MPLS_TP_LSP
Invalid TTL             11515    0       0       0       0       0
BFD Not Configured      0        0       0       0       0       0

Conditions:
"mpls ip-ttl-propagate disable" is enabled.

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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