EIGRP Cheat Sheet

Question 1

What type of protocol is EIGRP?

Answer 1

Distance Vector

Question 2

What type of algorithm does EIGRP use?

Answer 2

Diffusing update algorithm (DUAL)

Question 3

Summary AD of EIGRP

Answer 3

5

Question 4

What type of standard is EIGRP

Answer 4

It is Cisco proprietary

Question 5

What type of authentication does EIGRP use

Answer 5

MD5

Question 6

What is the multicast IP address of EIGRP

Answer 6

224.0.0.10

Question 7

Hello & Hold timers for high bandwidth multipoint links and low bandwidth multipoint links

Answer 7

Hello Timers: 5(high), 60(low)
Hold: 15(High), 180(low)
in seconds

Sends hello packets every __ sec. (hello timers)

Question 8

K defaults for EIGRP

K1 K2 K3 K4 K5

Answer 8

1 0 1 0 0

Question 9

What is feasible distance and advertised/reported distance for EIGRP?

Answer 9

Feasible distance is the total distance to get to destination.

Advertised/reported is how far destination is based on what neighbor says(basically, not including the cost it takes to get to the neighbor)

Question 10

What do you call the best path and the backup path in EIGRP

Answer 10

Best: successor
Backup: feasible successor

Question 11

What are the metrics for EIGRP, which are static/dynamic and which are enabled by default

Answer 11

Bandwidth, delay, load and reliability

Bandwidth/delay are static and are also enabled by default

Load/reliability are dynamic and are disabled by default.

Question 12

What needs to be correct (with successor, feasible successor, the feasible distance and multiplier) for load-balance to work

Answer 12

The feasible successor needs to have a lower advertised distance than the (successor x multiplier/variance)

Question 13

What does each K-value stand for?

Answer 13

K1: Bandwidth
K2: Load
K3: Delay
K4: Reliability
K5: MTU