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Cisco Bug: CSCuq49073 - LDP breaks after defaulting an interface

Last Modified

Aug 14, 2017

Products (24)

  • Cisco IOS
  • Cisco ASR 901-6CZ-FS-D Router
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco ASR 901S-4SG-F-D Router
  • Cisco ASR 901-4C-FT-D Router
  • Cisco ASR 901S-2SG-F-D Router
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901S-2SG-F-AH Router
  • Cisco ASR 901-6CZ-FT-A Router
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Known Affected Releases

15.3(3)S 15.3(3)S3 15.5(1)S

Description (partial)

Symptom:
LDP will not run on Interface with LDP IGP sync enabled after defaulting an interface with the command - "default int <int name>". Debugs will show up packets sent/received but mpls neighbor will NOT be forming.

'sho mpls ldp disc' would NOT show the interface name.

3600X-2(config-if)#do sho mpls ldp disc
Local LDP Identifier:
    1.4.5.6:0
    Discovery Sources: ---<< nothing
    Targeted Hellos:
        1.4.5.6 -> 1.2.1.7 (ldp): active/passive, xmit/recv
            LDP Id: 1.2.1.7:0

Conditions:
LDP IGP sync MUST to be enabled and the trigger should be defaulting an interface config
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Bug Details Include

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