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New Member

Nexus-7000 and Cisco 6500 EIGRP neighboor issue


We are trying to connect Nexus-7k to our Environment Cisco 6500. we are having issue forming EIGRP relation between switches and getting error like below.

2012 Jul  8 21:22:44.359 E2-N7K-01 %EIGRP-5-NBRCHANGE_DUAL:  eigrp-30 [6949] (de

fault-base) IP-EIGRP(0) 30: Neighbor 172.16.x.x (Vlanxxx) is down: Interface G

oodbye received.

verified both K values are same in the switches (default)s.

please let us know how to fix this issue

Everyone's tags (3)
Cisco Employee

Re: Nexus-7000 and Cisco 6500 EIGRP neighboor issue

Hello Mohan,

It's a totally blind shot but try to verify the EIGRP Router IDs (they are displayed in the show ip eigrp topology output like "EIGRP-IPv4 Topology Table for AS(1)/ID(" ). It is theoretically possible that these two EIGRP speakers happen to have the same RouterID. Although in my experience, an identical EIGRP RID has not caused the EIGRP adjacency to flap or to emit Goodbye messages, I nevertheless suggest checking it.

Also make sure that the K-values are not all set to 255 - that is precisely the Goodbye message your Nexus is complaining about. By the way, is there any logging message recorded on the 6500?

Best regards,


New Member

Re: Nexus-7000 and Cisco 6500 EIGRP neighboor issue

Are  you peering over a VPC VLAN? IF so that is your issue.