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Cisco Bug: CSCvv01406 - EIGRP Neighbor flapped when adjust the time to past

Last Modified

Oct 22, 2020

Products (1)

  • Cisco Nexus 9000 Series Switches

Known Affected Releases

9.2(1) 9.3(4)

Description (partial)

Symptom:
# show clock 
09:01:36.172 UTC Wed Jul 15 2020      <<<<<<<<< 
Time source is Hardware Calendar
# clock set 05:00:00 15 july 2020     <<<<<<<< modify the time to the past cause the eigrp neighbor flapping
Wed Jul 15 05:00:00 UTC 2020
# terminal monitor 

2020 Jul 15 05:00:12 SWITCH %EIGRP-5-NBRCHANGE_DUAL:  eigrp-1 [3813] (default-base) IP-EIGRP(0) 1: Neighbor 10.x.x.x (Ethernet1/XX) is down: Interface Goodbye received
2020 Jul 15 05:00:17 SWITCH %EIGRP-5-NBRCHANGE_DUAL:  eigrp-1 [3813] (default-base) IP-EIGRP(0) 1: Neighbor 10.x.x.x (Ethernet1/XX) is up: new adjacency

Conditions:
modify time to past time
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
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