16.0.0/16 is variably subnetted, 2 subnets, 2 masks
D 172.16.31.0/24 [90/40640000] via 10.140.1.1, 00:01:09, Serial0/0/0
O 172.16.31.100/32 [110/1563] via 10.140.1.1, 00:26:55, Serial0/0/0
10.0.0.0/8 is variably subnetted, 7 subnets, 2 masks
C 10.23.23.0/24 is directly connected, Serial0/0/1
D EX 10.3.3.0/24 [170/40514560] via 10.23.23.2, 00:01:09, Serial0/0/1
C 10.2.2.0/24 is directly connected, FastEthernet0/0
Troubleshoot
EIGRP Neighbor
Relationships
Troubleshoot
EIGRP Routing
Table Issues
Troubleshoot
EIGRP
Authentication
Are all
required EIGRP
networks being
advertised?
Are there
any route filters
that block EIGRP
networks?
Are there
duplicate EIGRP
router IDs?
Is there
a discontiguous
network?
Troubleshooting EIGRP 197
The show ip eigrp topology command displays the EIGRP router ID. The EIGRP router ID comes
from the highest IP address assigned to a loopback interface. If no loopback interfaces are
con?¬?gured, the highest IP address assigned to any other active interface is chosen as the router ID.
No two EIGRP routers can have the same EIGRP router ID. If they do, you will experience
problems exchanging routes between the two routers with equal router IDs.
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