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Cisco Bug: CSCur26119 - EIGRP prefixes missing after interface flap

Last Modified

Sep 11, 2019

Products (8)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7700 6-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7700 18-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch
  • Cisco Nexus 7700 10-Slot Switch

Known Affected Releases


Description (partial)

EIGRP interface/adjacency flap may cause some EIGRP prefixes not to be sent. You should typically be able to see such an occurrence via syslog. One example is below.

%EIGRP-5-NBRCHANGE_DUAL:  eigrp-1 [pid x] (default-base) IP-EIGRP(0) 9: Neighbor x.x.x.x (Vlan x) is down: holding time expired.

Once this occurs, EIGRP route's may be missing from the EIGRP table.

- This has been seen with when using route tagging with distribute list, however this is not an absolute cause and effect.
- Occurrence of the issue is unpredictable given it also requires rare internal EIGRP condition when forming route-update packets.
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Bug Details Include

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