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Cisco Bug: CSCuj11720 - PE does next-hop-self while sending eBGP route to iBGP vrf-lite CE

Last Modified

Feb 13, 2018

Products (25)

  • Cisco IOS
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco 7206 Router
  • Cisco ASR 901-4C-FT-D Router
  • Cisco 7301 Router
  • Cisco 7204 Router
  • Cisco 7206VXR Router
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901-6CZ-FT-A Router
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Known Affected Releases

12.2(33)SRE5 15.2(4)S3 15.3(1)S1 15.3(2)S1 15.3(3)S 15.4(0.26)T

Description (partial)

Symptom:The next-hop attribute advertised to an iBGP vrf-lite CE peer for a route learned by eBGP vrf-lite CE is overridden to self address.

Conditions:1. This problem only happen when using address-family ipv4 vrf.
2. Both ebgp and ibgp vrf-lite CE must be activated under "address-family ipv4 vrf"
3. Route learnt from ebgp vrf-lite CE is being advertised to iBGP vrf-lite CE.
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