要求：
1、配置R1、R2为边界路由，其中R1/R3/R2跑在eigrp 100中，R1/R2/R4跑在eigrp 10中
2、在R1、R2上进行重分布，使得R3可以访问R4
步骤：
1、配置各个路由器的端口ip地址：
R1
int lo 0
ip add 1.1.1.1 255.255.255.0
no shu
int g1/0
ip add 13.0.0.1 255.255.255.0
no shu
int g0/0
ip add 12.0.0.1 255.255.255.0
no shu
int g2/0
ip add 14.0.0.1 255.255.255.0
no shu
R2
int lo 0
ip add 2.2.2.2 255.255.255.0
no shu
int g1/0
ip add 12.0.0.2 255.255.255.0
no shu
int g2/0
ip add 23.0.0.2 255.255.255.0
no shu
int g3/0
ip add 24.0.0.2 255.255.255.0
no shu
R3
int lo 0
ip add 3.3.3.3 255.255.255.0
no shu
int g1/0
ip add 13.0.0.3 255.255.255.0
no shu
int g2/0
ip add 23.0.0.3 255.255.255.0
no shu
R4
int lo 0
ip add 4.4.4.4 255.255.255.0
no shu
int g1/0
ip add 14.0.0.4 255.255.255.0
no shu
int g2/0
ip add 24.0.0.4 255.255.255.0
no shu
2、运行eigrp
R1
router eigrp 100
net 12.0.0.0 0.0.0.255
net 13.0.0.0 0.0.0.255
net 1.1.1.0 0.0.0.255
router eigrp 10
net 14.0.0.0 0.0.0.255
R2
router eigrp 100
net 12.0.0.0 0.0.0.255
net 23.0.0.0 0.0.0.255
net 2.2.2.0 0.0.0.255
router eigrp 10
net 24.0.0.0 0.0.0.255
R3
router eigrp 100
net 13.0.0.0 0.0.0.255
net 23.0.0.0 0.0.0.255
net 3.3.3.3.0 0.0.0.255
3、在R1/R2上设置重分布
R1
router eigrp 100
redistribute eigrp 10
router eigrp 10
redistribute eigrp 100
R2
router eigrp 100
redistribute eigrp 10
router eigrp 10
redistribute eigrp 100
4、在R3上查询路由表
R3#show 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 route
Gateway of last resort is not set
D 1.0.0.0/8 [90/130816] via 13.0.0.1, 01:24:09, GigabitEthernet1/0
D 2.0.0.0/8 [90/130816] via 23.0.0.2, 01:24:01, GigabitEthernet2/0
3.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 3.3.3.0/24 is directly connected, Loopback3
D 3.0.0.0/8 is a summary, 01:23:47, Null0
D EX 4.0.0.0/8 [170/131072] via 23.0.0.2, 00:50:08, GigabitEthernet2/0
23.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 23.0.0.0/24 is directly connected, GigabitEthernet2/0
D 23.0.0.0/8 is a summary, 01:24:44, Null0
24.0.0.0/24 is subnetted, 1 subnets
D EX 24.0.0.0 [170/3072] via 23.0.0.2, 00:50:08, GigabitEthernet2/0
D 12.0.0.0/8 [90/3072] via 23.0.0.2, 01:24:42, GigabitEthernet2/0
[90/3072] via 13.0.0.1, 01:24:42, GigabitEthernet1/0
13.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 13.0.0.0/24 is directly connected, GigabitEthernet1/0
D 13.0.0.0/8 is a summary, 01:24:46, Null0
14.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
D EX 14.0.0.0/24 [170/3072] via 13.0.0.1, 00:50:40, GigabitEthernet1/0
D EX 14.0.0.0/8 [170/3328] via 23.0.0.2, 00:50:10, GigabitEthernet2/0
R3#
5、R3 ping R4
R3#ping 4.4.4.4
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds:
!!!.!
Success rate is 80 percent (4/5), round-trip min/avg/max = 16/39/80 ms
R3#
