Which commands would be used to enable Enhanced Interior Gateway Routing Protocol (EIGRP) on a router,
and configure the IP addresses 10.2.2.2 and 192.168.1.1 as a part of complete EIGRP configuration? (Choose
three.)
A.
router eigrp 10
B.
router eigrp
C.
network 10.2.2.2
D.
network 10.0.0.0
E.
network 192.168.1.0
F.
network 192.168.1.1
Explanation:
The router eigrp 10 command is used to enable EIGRP on a router. The network 10.0.0.0 and network
192.168.1.0 commands are used to activate EIGRP over the interfaces configured with IP addresses 10.2.2.2
and 192.168.1.1. If we were given the subnet mask for the two interfaces, we could include that in the network
command as well.
The following command sequence is used to configure EIGRP on a router:
router(config) # router eigrp [autonomous-system]
router (config-router) # network x.x.x.x [wildcard-mask]
router (config-router) # network y.y.y.y [wildcard-mask]
The autonomous-system parameter of the router eigrp command specifies the autonomous system number. To
ensure that all the routers in a network can communicate with each other, you should specify the same
autonomous system number on all the routers.
The parameters of the network command are:
x.x.x.x – This is the major (classful) network number connected to the router.
y.y.y.y – This is the other major (classful) network number connected to the router.
If either the AS numbers do not match between two EIGRP routers or one end is not configured with EIGRP, no
EIGRP routes will appear in the routing table of either router, because they will not have formed an EIGRP
neighbor relationship. In this situation you will be able ping between the routers, but you will not be able to ping
LANs attached to the other router.
The router eigrp command is incorrect because you need to specify the autonomous system number after the
command to enable EIGRP in a network. The router eigrp 10 command includes the autonomous-system
parameter.
The network 192.168.1.1 and network 10.2.2.2 commands are incorrect because the command must be in
terms of the network or subnet ID of the network in which the interfaces reside. It is not entered in terms of the
address of the interfaces.
Objective:
Routing Fundamentals
Sub-Objective:
Configure, verify, and troubleshoot EIGRP for IPv4 (excluding authentication, filtering, manual summarization,
redistribution, stub)Cisco > Support > Cisco IOS Software > Configuring EIGRP > Enabling EIGRP