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Cisco Bug: CSCvu07563 - IPv4 next-hop for IPv6 address-family

Last Modified

Sep 03, 2020

Products (45)

  • Cisco Network Convergence System 5500 Series
  • Cisco Network Convergence System 5504
  • Cisco Network Convergence System 55A2-MOD-HD-S
  • Cisco NCS 540-28Z4C-SYS-A Router
  • Cisco Network Convergence System 1004
  • Cisco Network Convergence System 5001
  • Cisco NCS 540X-ACC-SYS Router
  • Cisco ASR 9910 Router
  • Cisco Network Convergence System 5502-SE
  • Cisco NCS 6008 - 8-Slot Chassis
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Known Affected Releases

7.0.1

Description (partial)

Symptom:
RP/0/RP0/CPU0:Apr 29 15:31:56.829 UTC: rt_check_mgr[1202]: %OS-RT_CHECK-3-INCONSISTENCY_DETECTED : ipv4-mpls detected inconsistency with 7 entries for scan-id 68365
RP/0/RP0/CPU0:Apr 29 15:32:21.835 UTC: rt_check_mgr[1202]: %OS-RT_CHECK-3-INCONSISTENCY_DETECTED : ipv4-mpls detected inconsistency with 1 entries for scan-id 68366
RP/0/RP0/CPU0:Apr 29 15:33:16.832 UTC: rt_check_mgr[1202]: %OS-RT_CHECK-3-INCONSISTENCY_DETECTED : ipv4-mpls detected inconsistency with 7 entries for scan-id 68366

Conditions:
Customer is using IPv4 next-hop for IPv6 address-family which is not supported in IOS-XR. In MPLS and BGP vpn4, the label will get stuck and will constantly try to forward traffic to the stuck label causing traffic blackhole.
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