EIGRP
路由协议的配置
概念：
1.邻居表：直连路由器的地址和与之相连的接口
2.拓扑表：
a.路由状态：P（被动） A（活动）
b.可行距离（FD）:到目的地的最小度量（metric）
c.报告距离（AD）：邻居到达目的网络的开销
d.等价负载均衡：到达同意目的地的两条链路FD值相同时
e.后继路由:主路由的一下跳地址所在路由器(R12是R11的后继路由)
f.可行后继路由：AD2<FD1,即有可行后继路由，主路由发生故障后，可行后继路由马上取而代之
g.不可行后继路由：AD2>FD1,当主路由链路发生故障后，需重新计算路由。
3.路由表：只显示托普表中的最佳路由，即后继路由
4.命令
router eigrp 100 100为自治域系统（AS）号
no auto-summery 关闭自动汇总
network 192.168.1.254 0.0.0.0
network 接口IP地址 通配符
.......
5.查看邻居表、拓扑表、路由表
show ip eigrp nei
show ip eigrp topolopy
show ip route
实验
1.
拓扑图
2.配置
R1
上的
show run
R1#show run
Building configuration...
Current configuration : 745 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R1
!
!
!
no ip domain-lookup
!
!
interface FastEthernet0/0
ip address 172.16.12.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 172.16.14.1 255.255.255.0
duplex auto
speed auto
!
interface Ethernet1/0
ip address 10.10.1.254 255.255.255.0
duplex auto
speed auto
!
interface Vlan1
no ip address
shutdown
!
router eigrp 100
network 10.10.1.254 0.0.0.0
network 172.16.12.1 0.0.0.0
network 172.16.14.1 0.0.0.0
no auto-summary
!
ip classless
!
!
line con 0
exec-timeout 0 0
logging synchronous
line vty 0 4
login
!
!
end
R2
上的
show run
R2#show run
Building configuration...
Current configuration : 709 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R2
!
!
no ip domain-lookup
!
!!
interface Loopback0
ip address 172.16.55.1 255.255.255.0
!
interface FastEthernet0/0
ip address 172.16.12.2 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 172.16.23.2 255.255.255.0
duplex auto
speed auto
!
interface Vlan1
no ip address
shutdown
!
router eigrp 100
network 172.16.12.0 0.0.0.255
network 172.16.23.0 0.0.0.255
no auto-summary
!
ip classless
!
!
line con 0
exec-timeout 0 0
logging synchronous
line vty 0 4
login
!
!
!
end
R3
上的
show run
R2#show run
Building configuration...
Current configuration : 709 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R2
!
!
no ip domain-lookup
!
!
interface Loopback0
ip address 172.16.55.1 255.255.255.0
!
interface FastEthernet0/0
ip address 172.16.12.2 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 172.16.23.2 255.255.255.0
duplex auto
speed auto
!
interface Vlan1
no ip address
shutdown
!
router eigrp 100
network 172.16.12.0 0.0.0.255
network 172.16.23.0 0.0.0.255
network 172.16.0.0
no auto-summary
!
ip classless
!
!
line con 0
exec-timeout 0 0
logging synchronous
line vty 0 4
login
!
!
end
R4
上的
show run
R4#show run
Building configuration...
Current configuration : 625 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R4
!
!
no ip domain-lookup
!
!
interface FastEthernet0/0
ip address 172.16.14.4 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 172.16.34.4 255.255.255.0
duplex auto
speed auto
!
interface Vlan1
no ip address
shutdown
!
router eigrp 100
network 172.16.14.4 0.0.0.0
network 172.16.34.4 0.0.0.0
no auto-summary
!
ip classless
!
!
line con 0
exec-timeout 0 0
logging synchronous
line vty 0 4
login
!
!
end
3.
在各路由器上查看邻居表、拓扑表、路由表
R1#
R1#show ip eigrp nei
IP-EIGRP neighbors for process 100
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 172.16.14.4 Fa0/1 14 00:37:13 40 1000 0 33
1 172.16.12.2 Fa0/0 12 00:11:34 40 1000 0 42
R1#show ip eigrp top
IP-EIGRP Topology Table for AS 100
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - Reply status
P 10.10.1.0/24, 1 successors, FD is 281600
via Connected, Ethernet1/0
P 172.16.14.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/1
P 172.16.23.0/24, 1 successors, FD is 30720
via 172.16.12.2 (30720/28160), FastEthernet0/0
P 172.16.34.0/24, 1 successors, FD is 30720
via 172.16.14.4 (30720/28160), FastEthernet0/1
P 192.168.1.0/24, 2 successors, FD is 286720
via 172.16.14.4 (286720/284160), FastEthernet0/1
via 172.16.12.2 (286720/284160), FastEthernet0/0
P 172.16.55.0/24, 1 successors, FD is 156160
via 172.16.12.2 (156160/128256), FastEthernet0/0
P 172.16.12.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/0
R1#
R1#show ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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
10.0.0.0/24 is subnetted, 1 subnets
C 10.10.1.0 is directly connected, Ethernet1/0
172.16.0.0/24 is subnetted, 5 subnets
C 172.16.12.0 is directly connected, FastEthernet0/0
C 172.16.14.0 is directly connected, FastEthernet0/1
D 172.16.23.0 [90/30720] via 172.16.12.2, 00:11:56, FastEthernet0/0
D 172.16.34.0 [90/30720] via 172.16.14.4, 00:37:16, FastEthernet0/1
D 172.16.55.0 [90/156160] via 172.16.12.2, 00:11:56, FastEthernet0/0
D 192.168.1.0/24 [90/286720] via 172.16.14.4, 00:37:16, FastEthernet0/1
[90/286720] via 172.16.12.2, 00:11:56, FastEthernet0/0
R1#
R2#show ip eigrp nei
IP-EIGRP neighbors for process 100
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 172.16.12.1 Fa0/0 12 00:25:57 40 1000 0 45
1 172.16.23.3 Fa0/1 12 00:25:45 40 1000 0 40
R2#show ip eigrp top
IP-EIGRP Topology Table for AS 100
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - Reply status
P 172.16.12.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/0
P 10.10.1.0/24, 1 successors, FD is 284160
via 172.16.12.1 (284160/281600), FastEthernet0/0
P 172.16.14.0/24, 1 successors, FD is 30720
via 172.16.12.1 (30720/28160), FastEthernet0/0
P 172.16.23.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/1
P 172.16.34.0/24, 1 successors, FD is 30720
via 172.16.23.3 (30720/28160), FastEthernet0/1
P 192.168.1.0/24, 1 successors, FD is 284160
via 172.16.23.3 (284160/281600), FastEthernet0/1
R2#
R2#show ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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
10.0.0.0/24 is subnetted, 1 subnets
D 10.10.1.0 [90/284160] via 172.16.12.1, 00:26:08, FastEthernet0/0
172.16.0.0/24 is subnetted, 5 subnets
C 172.16.12.0 is directly connected, FastEthernet0/0
D 172.16.14.0 [90/30720] via 172.16.12.1, 00:26:08, FastEthernet0/0
C 172.16.23.0 is directly connected, FastEthernet0/1
D 172.16.34.0 [90/30720] via 172.16.23.3, 00:25:57, FastEthernet0/1
C 172.16.55.0 is directly connected, Loopback0
D 192.168.1.0/24 [90/284160] via 172.16.23.3, 00:25:57, FastEthernet0/1
R2#
R3#
R3#show ip eigrp nei
IP-EIGRP neighbors for process 100
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 172.16.23.2 Fa0/0 13 00:42:47 40 1000 0 41
1 172.16.34.4 Fa0/1 13 00:40:25 40 1000 0 32
R3#show ip eigrp top
IP-EIGRP Topology Table for AS 100
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - Reply status
P 172.16.23.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/0
P 10.10.1.0/24, 2 successors, FD is 286720
via 172.16.34.4 (286720/284160), FastEthernet0/1
via 172.16.23.2 (286720/284160), FastEthernet0/0
P 172.16.14.0/24, 1 successors, FD is 30720
via 172.16.34.4 (30720/28160), FastEthernet0/1
P 172.16.34.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/1
P 192.168.1.0/24, 1 successors, FD is 281600
via Connected, Ethernet1/0
P 172.16.55.0/24, 1 successors, FD is 156160
via 172.16.23.2 (156160/128256), FastEthernet0/0
P 172.16.12.0/24, 1 successors, FD is 30720
via 172.16.23.2 (30720/28160), FastEthernet0/0
R3#
R3#show ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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
10.0.0.0/24 is subnetted, 1 subnets
D 10.10.1.0 [90/286720] via 172.16.34.4, 00:40:37, FastEthernet0/1
[90/286720] via 172.16.23.2, 00:15:18, FastEthernet0/0
172.16.0.0/24 is subnetted, 5 subnets
D 172.16.12.0 [90/30720] via 172.16.23.2, 00:15:19, FastEthernet0/0
D 172.16.14.0 [90/30720] via 172.16.34.4, 00:40:37, FastEthernet0/1
C 172.16.23.0 is directly connected, FastEthernet0/0
C 172.16.34.0 is directly connected, FastEthernet0/1
D 172.16.55.0 [90/156160] via 172.16.23.2, 00:27:28, FastEthernet0/0
C 192.168.1.0/24 is directly connected, Ethernet1/0
R3#
R4#show ip eigrp nei
IP-EIGRP neighbors for process 100
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 172.16.14.1 Fa0/0 10 00:42:01 40 1000 0 34
1 172.16.34.3 Fa0/1 12 00:41:40 40 1000 0 29
R4#show ip eigrp top
IP-EIGRP Topology Table for AS 100
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - Reply status
P 172.16.14.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/0
P 10.10.1.0/24, 1 successors, FD is 284160
via 172.16.14.1 (284160/281600), FastEthernet0/0
P 172.16.23.0/24, 1 successors, FD is 30720
via 172.16.34.3 (30720/28160), FastEthernet0/1
P 172.16.34.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/1
P 192.168.1.0/24, 1 successors, FD is 284160
via 172.16.34.3 (284160/281600), FastEthernet0/1
P 172.16.55.0/24, 2 successors, FD is 158720
via 172.16.34.3 (158720/156160), FastEthernet0/1
via 172.16.14.1 (158720/156160), FastEthernet0/0
P 172.16.12.0/24, 1 successors, FD is 30720
via 172.16.14.1 (30720/28160), FastEthernet0/0
R4#
R4#show ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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
10.0.0.0/24 is subnetted, 1 subnets
D 10.10.1.0 [90/284160] via 172.16.14.1, 00:42:12, FastEthernet0/0
172.16.0.0/24 is subnetted, 5 subnets
D 172.16.12.0 [90/30720] via 172.16.14.1, 00:16:33, FastEthernet0/0
C 172.16.14.0 is directly connected, FastEthernet0/0
D 172.16.23.0 [90/30720] via 172.16.34.3, 00:41:52, FastEthernet0/1
C 172.16.34.0 is directly connected, FastEthernet0/1
D 172.16.55.0 [90/158720] via 172.16.34.3, 00:28:42, FastEthernet0/1
[90/158720] via 172.16.14.1, 00:16:32, FastEthernet0/0
D 192.168.1.0/24 [90/284160] via 172.16.34.3, 00:41:52, FastEthernet0/1
R4#
4.
验证路由配置结果
本文转自kindIT 51CTO博客，原文链接：http://blog.51cto.com/kindit/1009273，如需转载请自行联系原作者
