Chapter 8 - EIGRP Advanced Config and Troubleshooting

Question 1

Verify Automatic Summarization is Disabled

Answer 1

show ip protocols

Question 2

Verify Routes are Not Automatically Summarized

Answer 2

show ip route eigrp

Question 3

Automatic Summarization - Configure

Answer 3

#router eigrp 1
#auto-summary

Question 4

Verify Summary Route in Topology Table

Answer 4

show ip eigrp topology all-links

Question 5

Loopback Interfaces

Answer 5

#int lo2
#ip add 192.168.2.1 255.255.255.0

#router eigrp 1
#network 192.168.2.0

Question 6

Calculating a Summary Route

Answer 6

= a /22 or 255.255.252.0 subnet mask.

Question 7

Summary Roue - Configure Interface

Answer 7

#int s0/0/0
#ip summary-address eigrp 1 192.168.0.0 255.255.252.0

Question 8

Static Default Route Configuration and Propagation

Answer 8

#ip route 0.0.0.0 0.0.0.0 s0/1/0
#router eigrp 1
#redistribute static

Question 9

Verify Default Routes

Answer 9

show ip roue (look for ‘D*EX 0.0.0.0/0’)

Question 10

IPv6 Loopback interfaces - Configure

Answer 10

#int lo11
#ipv6 add 2001:db8:acad:1::1/64
#ipv6 eigrp 2
#int lo12
#ipv6 add 2001:db8:acad:2::1/64
#ipv6 eigrp 2

Question 11

IPv6 Manually Summary - Configure

Answer 11

#int s0/0/0
#ipv6 summary-address eigrp 2 2001:db8:acad::/48
#int s0/0/1
#ipv6 summary-address eigrp 2 2001:db8:acad::/48

Question 12

Bandwidth Utilization with EIGRP - Configure

Answer 12

#int s0/0/0
#ip bandwidth-percent eigrp 1 40

Question 13

Hello and Hold Timers with EIGRP - Configure

Answer 13

#int s0/0/0
#ip hello-interval eigrp 1 50
#ip hold-time eigrp 1 150

Question 14

EIGRP Authentication with MD5 - Step 1

Answer 14

Create a Keychain and Key
#key chain REMOVE_BEFORE_FLIGHT
#key 1
#key-string cisco123 ('super secret string' password)

Question 15

EIGRP Authentication with MD5 - Step 2

Answer 15

Configure EIGRP Authentication Using Keychain and Key (install on each interface)
#int s0/0/0
#ip authentication mode eigrp 1 md5
#ip authentication key-chain eigrp 1 REMOVE_BEFORE_FLIGHT

Question 16

Troubeshooting cmds for EIGRP

Answer 16

#show ip protocols
#show ip eigrp neighbors
#show ip eigrp interface
#show ip route eigrp
#show ip interface brief