Command
router eigrp <AS>
Use
The router eigrp command is necessary to enable EIGRP (Enhanced Interior Gateway Routing Protocol). EIGRP must be enabled before carrying out any of the EIGRP commands.
Syntax
R1(config)#router eigrp
Example
In this example, EIGRP is configured on R1 using router eigrp. First, we use the show ip route command to help determine the network layout.
| R1#sh ip route Codes: C – connected, S – static, R – RIP, M – mobile, B – BGP D – EIGRP, EX – EIGRP external, O – OSPF, IA – OSPF inter area N1 – OSPF NSSA external type 1, N2 – OSPF NSSA external type 2 E1 – OSPF external type 1, E2 – OSPF external type 2 i – IS-IS, su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS level-2 ia – IS-IS inter area, * – candidate default, U – per-user static route o – ODR, P – periodic downloaded static routeGateway of last resort is not set1.0.0.0/32 is subnetted, 1 subnets C 1.1.1.1 is directly connected, Loopback0 10.0.0.0/24 is subnetted, 2 subnets C 10.1.1.0 is directly connected, FastEthernet0/0 R1#
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Next router eigrp is set on R1.
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R1(config)#router eigrp 101 |
Afterwards, we do the same to R2.
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R2(config)#router eigrp 101 |
Now if we type show ip route, we see that EIGRP is enabled and sending routes
| R1#sh ip route Codes: C – connected, S – static, R – RIP, M – mobile, B – BGP D – EIGRP, EX – EIGRP external, O – OSPF, IA – OSPF inter area N1 – OSPF NSSA external type 1, N2 – OSPF NSSA external type 2 E1 – OSPF external type 1, E2 – OSPF external type 2 i – IS-IS, su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS level-2 ia – IS-IS inter area, * – candidate default, U – per-user static route o – ODR, P – periodic downloaded static routeGateway of last resort is not set1.0.0.0/32 is subnetted, 1 subnets C 1.1.1.1 is directly connected, Loopback0 10.0.0.0/24 is subnetted, 2 subnets D 10.2.2.0 [90/30720] via 10.1.1.2, 18:10:59, FastEthernet0/0 C 10.1.1.0 is directly connected, FastEthernet0/0 R1# |
