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• Building one Marketing on the subnet192.168.20.0 /27 Sales on the subnet192.168.20.32 /27 Building two Marketing on the subnet192.168.20.96 /27 Sales on the subnet192.168.20.128 /27 The WAN link on the subnet192.168.10.4 /30 However you discover that the two building has lost the connectivity Here is [output cut] from R1 R1# show ip interface brief Serial0/0192.168.10.5 YES manual up up FastEthernet1/0192.168.20.1 YES manual up up FastEthernet2/0192.168.20.33 YES manual up up R1# show running-config router eigrp10 network192.168.10.4 ,0.0.0.3 network192.168.20.0 ,0.0.0.31 network192.168.20.32 ,0.0.0.31 neighbor192.168.10.6 Serial0/0 no auto-summary R1# show ip protocols Routing Protocol is "eigrp10" Outgoing update filter list for all interfaces is not set Incoming update filter list for all interfaces is not set EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0 [output cut] from R2 R2# show ip interface brief Serial0/0192 .168 .10.6 yes manual up up FastEthernet1/0192.168.20.97 YES manual up up FastEthernet2/0192.168.20.129 YES manual up up R2# show running-config router eigrp10 network192.168.10.4 ,0.0.0.3 network192.168.20.96 ,0.0.0.31 network192.168.20.128 ,0.0.0.31 neighbor192.168.10.5 Serial0/0 no auto-summary R2#show ip protocols Routing Protocol is "eigrp10" Outgoing update filter list for all interfaces is not set Incoming update filter list for all interfaces is not set EIGRP metric weight K1=1, K2=1, K3=0, K4=0, K5=0 Based on this information what is the problem that make the two building lost the connection between each other and how to solve it
the K values in ROUTER2 is misconfigured and can be fixed by issue the command :
R2(config-router)#metric weights10100
The K values on the second router is not matching with first router ,which is set to default as below.
By setting K value to default as below, neigborship will come up
Default values,
K1=K3=1
K2=K4=K5=0
R2(config-router)#metric weights10100
metric weight configuration
Try matching the metric weights by changing the metric weight of router2 to10110. I hope this will solve the problem of connectivity
The K values should be matching on both ends. We see here that K2=1 on second router. Kindly set K2=0 and on2nd router and it should be fine.
There are many things here needs to be modified, if you are looking for better and easier learning, more than only troubleshooting the neighbor relationship problem which can be solved by matching the k-values on both routers.
To enable EIGRP on the router interfaces, simply, you can use these network commands on both routers without using the wildcard mask:
Router(config-router)#network192.168.10.0
Router(config-router)#network192.168.20.0
If there are interfaces that you don't need EIGRP to be enabled on, simply, use the passive interface command.
There is no need for the static neighbor EIGRP command on both routers, as both routers will be EIGRP neighbors using dynamic neighbor discovery.
You will need change the Metric
Its pretty simple.Just change the metric
