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Cisco Bug: CSCvv52514 - EIGRP subnet goes SIA if link failover occurs with mix of wide/narrow metric and offset-list

Last Modified

Oct 06, 2020

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases

8.1(1) 8.2(5)

Description (partial)

After primary link goes down and network is converging through backup link, you will see the subnet go stuck-in-active:

switch1(config)# show ip eigrp topology active
A, 1 successors, FD is 103583
    1 replies, active 00:00:16, query-origin: Multiple Origins
        via (154351/154095), Ethernet1/1, serno 25501
      Remaining replies:
         via, r, Ethernet1/2

switch2(config)# show ip eigrp topology active
A, 1 successors, FD is 260584959(2035819)
    1 replies, active 00:00:02, query-origin: Successor Origin
       , via (260584959/259929599), Vlan1
       , via (Infinity/Infinity), r, Ethernet1/1, serno 15218

switch3(config)# show ip eigrp topology active
A, 1 successors, FD is 259929599(2030699)
    1 replies, active 00:00:03, query-origin: Successor Origin
       , via (259929599/259274239), Ethernet1/1
       , via (Infinity/Infinity), r, Vlan1, serno 11719

Mix of wide metric and narrow metric configured in a looped EIGRP network.
Offset-list out configured on a switch with wide metric.
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