Question

Assuming the EIGRP defaults with no configuration changes, how long will a router wait to receive an EIGRP packet from its neighbor on an ATM link before declaring the neighbor unreachable?

10 seconds
15 seconds
60 seconds
180 seconds

Answer 1

The correct answer to the following question will be 15 seconds.

Step-by-step explanation:

EIGRP uses the whole time as long as it is expected to wait for it's neighbor to receive a hello packet (or other EIGRP packets) before declared the Neighbor unattainable.

The holding time is 3 times longer than the hello interval by design. The default time for the hello is 5 seconds on the LAN interfaces and the default holding time is 15 seconds.