EIGRP includes a special type of hello packet, known as a “goodbye.” Goodbyes are transmitted by an EIGRP router to its peer whenever a neighbor adjacency fails but the interface to reach that neighbor is still up. … The goodbye packet itself is actually a hello packet with all its K values set to 255.

What is graceful shutdown and goodbye message in EIGRP?

Graceful shutdown allows your neighbors to quickly convergence when your router stops running EIGRP globally or on a specific interface. Above you can see that the hold time is currently 14 seconds. If R1 doesn’t receive a hello packet from R2 within 14 seconds, it will drop the neighbor adjacency.

What is Q CNT in EIGRP?

Your first neighbor will have a value of 0, the second neighbor a value of 1 and so on. Hold: (sec): this is the holddown timer per EIGRP neighbor. Once this timer expires we will drop the neighbor adjacency. The default holddown timer is 15 seconds.