Scenario
Refer to the topology. Your company has connected the routers R1. R2. and R3 with serial links.
R2 and R3 are connected to the switches SW1 and SW2, respectively. SW1 and SW2 are also
connected to the routers R4 and R5.
The EIGRP routing protocol is configured.
You are required to troubleshoot and resolve the EIGRP issues between the various routers.
Use the appropriate show commands to troubleshoot the issues.
Router R6 does not form an EIGRP neighbor relationship correctly with router R1. What is the
cause for this misconfiguration?
A.
The K values mismatch.
B.
The AS does not match.
C.
The network command is missing.
D.
The passive-interface command is enabled.
From the configuration of R6 we learn that R6 is missing “network 192.168.16.0” command (the network between R1 & R6) under EIGRP so EIGRP neighbor relationship will not be formed between them.
Note: Please check the configuration of R6 carefully. If the “network 192.168.16.0” is not missing on R6 but the “metric weights” is configured like this:
R6:
router eigrp 1
network 10.6.6.6 0.0.0.0
network 192.168.16.0
metric weights 0 0 0 1 1 1
Then you should check if R1 has the same “metric weights” or not. If not then the answer should be “K values are mismatched”.
For your information, EIGRP K values are the scale numbers that EIGRP uses in metric calculation . Mismatched K values can prevent neighbor relationships from being established. The syntax of “metric weights” command is:
metric weights tos k1 k2 k3 k4 k5 (with tos is the type of service and must always be zero)
0
0
R1:
int lo0
ip address 10.1.1.1 255.255.255.255
int e0/0
ip address 192.168.16.1 255.255.255.0
int s1/1
ip address 192.168.13.1 255.255.255.0
bandwidth 1000
int s1/3
ip address 192.168.12.1 255.255.255.0
!
router eigrp 1
network 192.168.12.0
network 192.168.13.0
network 192.168.16.0
0
0