CCNP Day4 EIGRP默认路由二

1、网络拓扑

 

2、第三种方式配置默认路由（接口下汇总的方式）

R3#
R3#config t
Enter configuration commands, one per line.  End with CNTL/Z.        
R3(config)#interface s1/0
R3(config-if)#ip summary-address eigrp 100 0.0.0.0 0.0.0.0
R3(config-if)#end
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 0.0.0.0 to network 0.0.0.0

     1.0.0.0/24 is subnetted, 1 subnets
D       1.1.1.0 [90/2300416] via 192.168.23.1, 00:00:05, Serial1/0
     3.0.0.0/24 is subnetted, 1 subnets
C       3.3.3.0 is directly connected, Loopback0
     172.16.0.0/24 is subnetted, 1 subnets
D       172.16.12.0 [90/2172416] via 192.168.23.1, 00:00:05, Serial1/0
C    192.168.23.0/24 is directly connected, Serial1/0
D*   0.0.0.0/0 is a summary, 00:00:05, Null0
R3#


R2#
R2#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 192.168.23.2 to network 0.0.0.0

     1.0.0.0/24 is subnetted, 1 subnets
D       1.1.1.0 [90/156160] via 172.16.12.1, 02:26:25, FastEthernet0/0
     172.16.0.0/24 is subnetted, 1 subnets
C       172.16.12.0 is directly connected, FastEthernet0/0
C    192.168.23.0/24 is directly connected, Serial1/0
D*   0.0.0.0/0 [90/2297856] via 192.168.23.2, 00:00:26, Serial1/0
R2#


R1#
R1#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 172.16.12.2 to network 0.0.0.0

     1.0.0.0/24 is subnetted, 1 subnets
C       1.1.1.0 is directly connected, Loopback0
     172.16.0.0/24 is subnetted, 1 subnets
C       172.16.12.0 is directly connected, FastEthernet0/0
D    192.168.23.0/24 [90/2172416] via 172.16.12.2, 02:26:47, FastEthernet0/0
D*   0.0.0.0/0 [90/2300416] via 172.16.12.2, 00:00:40, FastEthernet0/0
R1#

3、第四种方式配置默认路由（特定路由的默认路由）

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

     1.0.0.0/24 is subnetted, 1 subnets
D       1.1.1.0 [90/2300416] via 192.168.23.1, 00:00:39, Serial1/0
     3.0.0.0/24 is subnetted, 1 subnets
C       3.3.3.0 is directly connected, Loopback0
     172.16.0.0/24 is subnetted, 1 subnets
D       172.16.12.0 [90/2172416] via 192.168.23.1, 00:00:39, Serial1/0
C    192.168.23.0/24 is directly connected, Serial1/0
R3#config t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#interface loopback 33
R3(config-if)#ip add 33.0.0.33 255.0.0.0
R3(config-if)#no shutdown 
R3(config-if)#exit
R3(config)#router eigrp 100 
R3(config-router)#network 33.0.0.33 0.0.0.0
R3(config-router)#end
R3#show ip
*Nov 25 13:04:08.023: %SYS-5-CONFIG_I: Configured from console by console
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

     1.0.0.0/24 is subnetted, 1 subnets
D       1.1.1.0 [90/2300416] via 192.168.23.1, 00:01:42, Serial1/0
C    33.0.0.0/8 is directly connected, Loopback33
     3.0.0.0/24 is subnetted, 1 subnets
C       3.3.3.0 is directly connected, Loopback0
     172.16.0.0/24 is subnetted, 1 subnets
D       172.16.12.0 [90/2172416] via 192.168.23.1, 00:01:42, Serial1/0
C    192.168.23.0/24 is directly connected, Serial1/0
R3#

R3#config t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#ip default-network 33.0.0.0  
R3(config)#end
R3#shiw
*Nov 25 13:06:15.331: %SYS-5-CONFIG_I: Configured from console by console
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

     1.0.0.0/24 is subnetted, 1 subnets
D       1.1.1.0 [90/2300416] via 192.168.23.1, 00:03:49, Serial1/0
C*   33.0.0.0/8 is directly connected, Loopback33
     3.0.0.0/24 is subnetted, 1 subnets
C       3.3.3.0 is directly connected, Loopback0
     172.16.0.0/24 is subnetted, 1 subnets
D       172.16.12.0 [90/2172416] via 192.168.23.1, 00:03:49, Serial1/0
C    192.168.23.0/24 is directly connected, Serial1/0
R3#



R2#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

     1.0.0.0/24 is subnetted, 1 subnets
D       1.1.1.0 [90/156160] via 172.16.12.1, 02:41:09, FastEthernet0/0
D    33.0.0.0/8 [90/2297856] via 192.168.23.2, 00:00:19, Serial1/0
     3.0.0.0/24 is subnetted, 1 subnets
D       3.3.3.0 [90/2297856] via 192.168.23.2, 00:01:53, Serial1/0
     172.16.0.0/24 is subnetted, 1 subnets
C       172.16.12.0 is directly connected, FastEthernet0/0
C    192.168.23.0/24 is directly connected, Serial1/0
R2#
R2#
R2#
R2#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 192.168.23.2 to network 33.0.0.0

     1.0.0.0/24 is subnetted, 1 subnets
D       1.1.1.0 [90/156160] via 172.16.12.1, 02:43:41, FastEthernet0/0
D*   33.0.0.0/8 [90/2297856] via 192.168.23.2, 00:00:42, Serial1/0
     3.0.0.0/24 is subnetted, 1 subnets
D       3.3.3.0 [90/2297856] via 192.168.23.2, 00:04:24, Serial1/0
     172.16.0.0/24 is subnetted, 1 subnets
C       172.16.12.0 is directly connected, FastEthernet0/0
C    192.168.23.0/24 is directly connected, Serial1/0
R2#


R1#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

     1.0.0.0/24 is subnetted, 1 subnets
C       1.1.1.0 is directly connected, Loopback0
     3.0.0.0/24 is subnetted, 1 subnets
D       3.3.3.0 [90/2300416] via 172.16.12.2, 00:00:03, FastEthernet0/0
     172.16.0.0/24 is subnetted, 1 subnets
C       172.16.12.0 is directly connected, FastEthernet0/0
D    192.168.23.0/24 [90/2172416] via 172.16.12.2, 02:39:28, FastEthernet0/0
R1#
R1#
R1#
R1#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 172.16.12.2 to network 33.0.0.0

     1.0.0.0/24 is subnetted, 1 subnets
C       1.1.1.0 is directly connected, Loopback0
D*   33.0.0.0/8 [90/2300416] via 172.16.12.2, 00:01:11, FastEthernet0/0
     3.0.0.0/24 is subnetted, 1 subnets
D       3.3.3.0 [90/2300416] via 172.16.12.2, 00:04:53, FastEthernet0/0
     172.16.0.0/24 is subnetted, 1 subnets
C       172.16.12.0 is directly connected, FastEthernet0/0
D    192.168.23.0/24 [90/2172416] via 172.16.12.2, 02:44:18, FastEthernet0/0
R1#

4、EIGRP　Metric计算

 

 

R1#config t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#interface s1/1
R1(config-if)#ip address 1.1.13.1 255.255.255.0
R1(config-if)#no shutdown 
R1(config-if)#exit
R1(config)#
*Nov 26 01:18:23.764: %LINK-3-UPDOWN: Interface Serial1/1, changed state to up
*Nov 26 01:18:24.764: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/1, changed state to up
R1(config)#router eigrp 100
R1(config-router)#
*Nov 26 01:18:47.228: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/1, changed state to down
R1(config-router)#network 1.1.13.1 0.0.0.0
R1(config-router)#end
R1#
*Nov 26 01:19:00.512: %SYS-5-CONFIG_I: Configured from console by console
R1#
*Nov 26 01:19:27.220: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/1, changed state to up
R1#
*Nov 26 01:19:45.416: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor 1.1.13.2 (Serial1/1) is up: new adjacency
R1#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

     1.0.0.0/24 is subnetted, 2 subnets
C       1.1.1.0 is directly connected, Loopback0
C       1.1.13.0 is directly connected, Serial1/1
     100.0.0.0/24 is subnetted, 4 subnets
C       100.1.1.0 is directly connected, Loopback101
C       100.1.0.0 is directly connected, Loopback100
C       100.1.3.0 is directly connected, Loopback103
C       100.1.2.0 is directly connected, Loopback102
D    33.0.0.0/8 [90/2297856] via 1.1.13.2, 00:01:55, Serial1/1
     3.0.0.0/24 is subnetted, 1 subnets
D       3.3.3.0 [90/2297856] via 1.1.13.2, 00:01:55, Serial1/1
     172.16.0.0/24 is subnetted, 1 subnets
C       172.16.12.0 is directly connected, FastEthernet0/0
D    192.168.23.0/24 [90/2172416] via 172.16.12.2, 00:02:04, FastEthernet0/0
R1#


R3#config t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#interface s1/1
R3(config-if)#ip add 1.1.13.2 255.255.255.0
R3(config-if)#no shutdown 
R3(config-if)#exit
R3(config)#
R3(config)#router eigrp 100
R3(config-router)#network 1.1.13.2 0.0.0.0
R3(config-router)#end
R3#


R2#
R2#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

     1.0.0.0/24 is subnetted, 2 subnets
D       1.1.1.0 [90/156160] via 172.16.12.1, 00:06:14, FastEthernet0/0
D       1.1.13.0 [90/2172416] via 172.16.12.1, 00:06:16, FastEthernet0/0
     100.0.0.0/24 is subnetted, 4 subnets
D       100.1.1.0 [90/156160] via 172.16.12.1, 00:06:14, FastEthernet0/0
D       100.1.0.0 [90/156160] via 172.16.12.1, 00:06:14, FastEthernet0/0
D       100.1.3.0 [90/156160] via 172.16.12.1, 00:06:14, FastEthernet0/0
D       100.1.2.0 [90/156160] via 172.16.12.1, 00:06:14, FastEthernet0/0
D    33.0.0.0/8 [90/2297856] via 192.168.23.2, 00:06:16, Serial1/0
     3.0.0.0/24 is subnetted, 1 subnets
D       3.3.3.0 [90/2297856] via 192.168.23.2, 00:06:16, Serial1/0
     172.16.0.0/24 is subnetted, 1 subnets
C       172.16.12.0 is directly connected, FastEthernet0/0
          
R2#show ip eigrp top
R2#show ip eigrp topology 
IP-EIGRP Topology Table for AS(100)/ID(192.168.23.1)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status 

P 1.1.1.0/24, 1 successors, FD is 156160
        via 172.16.12.1 (156160/128256), FastEthernet0/0
P 3.3.3.0/24, 1 successors, FD is 2297856
        via 192.168.23.2 (2297856/128256), Serial1/0
P 1.1.13.0/24, 1 successors, FD is 2172416
        via 172.16.12.1 (2172416/2169856), FastEthernet0/0
        via 192.168.23.2 (2681856/2169856), Serial1/0
P 33.0.0.0/8, 1 successors, FD is 2297856
        via 192.168.23.2 (2297856/128256), Serial1/0
P 100.1.1.0/24, 1 successors, FD is 156160
        via 172.16.12.1 (156160/128256), FastEthernet0/0
P 100.1.0.0/24, 1 successors, FD is 156160
        via 172.16.12.1 (156160/128256), FastEthernet0/0
P 100.1.3.0/24, 1 successors, FD is 156160
        via 172.16.12.1 (156160/128256), FastEthernet0/0
P 100.1.2.0/24, 1 successors, FD is 156160
        via 172.16.12.1 (156160/128256), FastEthernet0/0
P 192.168.23.0/24, 1 successors, FD is 2169856
          
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status 

        via Connected, Serial1/0
P 172.16.12.0/24, 1 successors, FD is 28160
        via Connected, FastEthernet0/0
R2#