默认路由试验(四)

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EIGRP

 

Eigrp在默认的情况下不重发 0.0.0.0 0.0.0.0 默认路由 但是如果在NETWORK中添加network 0.0.0.0命令 由于ip route 0.0.0.0 0.0.0.0 interface 命令所产生的结果(不是ip route 0.0.0.0 0.0.0.0 add 或ip default-network).他将重分发一条默认路由。实验见：

 

 

方法：一

 

P1R1(config-router)#ip route 0.0.0.0 0.0.0.0 s1/0

P1R1(config)#

*Mar  1 00:00:44.851: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0, changed state to down

P1R1(config)#router eigrp 100y

P1R1(config-router)#network 0.0.0.0

 

P1R1的 路由表：

P1R1#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 0.0.0.0 to network 0.0.0.0

 

     172.31.0.0/16 is variably subnetted, 2 subnets, 2 masks

C       172.31.1.0/24 is directly connected, Serial1/0

D       172.31.0.0/16 is a summary, 00:05:04, Null0

     10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks

D       10.1.2.0/24 [90/2172416] via 10.1.0.2, 00:05:07, Serial1/1

C       10.1.1.0/24 is directly connected, FastEthernet0/0

D       10.0.0.0/8 is a summary, 00:05:04, Null0

C       10.1.0.0/24 is directly connected, Serial1/1

S*   0.0.0.0/0 is directly connected, Serial1/0

P1R1#

*Mar  1 00:06:28.071: %SYS-5-CONFIG_I: Configured from console by console

P1R1#

 

P1R2的

P1R2#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 10.1.0.1 to network 0.0.0.0

 

D    172.31.0.0/16 [90/2681856] via 10.1.0.1, 00:00:02, Serial1/1

     10.0.0.0/24 is subnetted, 3 subnets

C       10.1.2.0 is directly connected, FastEthernet0/0

D       10.1.1.0 [90/2172416] via 10.1.0.1, 00:00:05, Serial1/1

C       10.1.0.0 is directly connected, Serial1/1

D*   0.0.0.0/0 [90/2681856] via 10.1.0.1, 00:00:02, Serial1/1

P1R2#

 

已经传递过来了！