2.7 EIGRP基本配置
实验目的:
1、掌握EIGRP的基本配置。
2.掌握EIGRP的邻居表、拓扑表、路由表。
3.掌握EIGRP的无类特性。
实验拓扑:
实验步骤:
1、依据图中拓扑配置各设备的IP地址,并保证直连连通性;
在R1上做如下配置:
R1(config)#int f0/0
R1(config-if)#no shutdown
R1(config-if)#ip address 12.1.1.1 255.255.255.0
R1(config-if)#exit
R1(config)#int f1/0
R1(config-if)#no shutdown
R1(config-if)#ip address 13.1.1.1 255.255.255.0
R1(config-if)#exit
R1(config)#int loopback 1
R1(config-if)#ip address 1.1.1.1 255.255.255.255
R1(config-if)#exit
在R2上做如下配置:
R2(config)#int f0/0
R2(config-if)#no shutdown
R2(config-if)#ip address 12.1.1.2 255.255.255.0
R2(config-if)#exit
R2(config)#int f1/0
R2(config-if)#no shutdown
R2(config-if)#ip address 23.1.1.2 255.255.255.0
R2(config-if)#exit
R2(config)#int loopback 1
R2(config-if)#ip address 2.2.2.2 255.255.255.255
R2(config-if)#exit
在R3上做如下配置
R3(config)#int f0/0
R3(config-if)#no shutdown
R3(config-if)#ip address 13.1.1.3 255.255.255.0
R3(config-if)#exit
R3(config-if)#int f1/0
R3(config-if)#no shutdown
R3(config-if)#ip address 23.1.1.3 255.255.255.0
R3(config-if)#exit
R3(config)#int loopback 1
R3(config-if)#ip address 3.3.3.3 255.255.255.255
R3(config-if)#exit
在其中一台路由器上进行连通性测试:
R1#ping 12.1.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 12.1.1.2, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 20/34/48 ms
R1#ping 13.1.1.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 13.1.1.3, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 16/31/48 ms
此时说明直连连接没有问题。
2.在每台路由器开始进行EIGRP的配置,R1的配置如下:
R1(config)#router eigrp 100[PL1]
R1(config-router)#no auto-summary[PL2]
R1(config-router)#network 12.1.1.0 0.0.0.255[PL3]
R1(config-router)#network 13.1.1.0 0.0.0.255
R1(config-router)#network 1.1.1.1 0.0.0.0
R1(config-router)#exit
R2的配置如下:
R2(config)#router eigrp 100
R2(config-router)#no auto-summary
R2(config-router)#network 12.1.1.0 0.0.0.255
R2(config-router)#network 23.1.1.0 0.0.0.255
R2(config-router)#network 2.2.2.2 0.0.0.0
R2(config-router)#exit
R3的配置如下:
R3(config)#router eigrp 100
R3(config-router)#no auto-summary
R3(config-router)#network 13.1.1.0 0.0.0.255
R3(config-router)#network 23.1.1.0 0.0.0.255
R3(config-router)#network 3.3.3.3 0.0.0.0
R3(config-router)#exit
3、查看EIGRP的邻居表、拓扑表和路由表,在R1上查看EIGRP邻居表,
如下:
R1#show ip eigrp neighbors
IP-EIGRP neighbors for process 100
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
1 13.1.1.3 Fa1/0 11 00:03:45 74 444 0 11
0 12.1.1.2 Fa0/0 14 00:04:10 65 390 0 10
其中H表示与其他路由器建立邻居的顺序,Address表示邻居的IP地址,Interface表示本地接口,Hold表示holdtime,默认为15s。从这里可以看到R1与R2和R3依次建立了邻居关系。
在R1上查看EIGRP拓扑表,如下:
R1#show ip eigrp topology
IP-EIGRP Topology Table for AS(100)/ID(1.1.1.1)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - reply Status, s - sia Status
P 3.3.3.3/32, 1 successors, FD is 156160
via 13.1.1.3 (156160/128256), FastEthernet1/0
P 2.2.2.2/32, 1 successors, FD is 156160
via 12.1.1.2 (156160/128256), FastEthernet0/0
P 1.1.1.1/32, 1 successors, FD is 128256
via Connected, Loopback1
P 12.1.1.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/0
P 13.1.1.0/24, 1 successors, FD is 28160
via Connected, FastEthernet1/0
P 23.1.1.0/24, 2 successors, FD is 30720
via 13.1.1.3 (30720/28160), FastEthernet1/0
via 12.1.1.2 (30720/28160), FastEthernet0/0
此命令放置满足FC<可行条件>的路由条目,若想查看所有EIGRP的路由条目,则需要加入all-links参数:
R1#show ip eigrp topology all-links
IP-EIGRP Topology Table for AS(100)/ID(1.1.1.1)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - reply Status, s - sia Status
P 3.3.3.3/32, 1 successors, FD is 156160, serno 8
via 13.1.1.3 (156160/128256), FastEthernet1/0
via 12.1.1.2 (158720/156160), FastEthernet0/0
P 2.2.2.2/32, 1 successors, FD is 156160, serno 5
via 12.1.1.2 (156160/128256), FastEthernet0/0
via 13.1.1.3 (158720/156160), FastEthernet1/0
P 1.1.1.1/32, 1 successors, FD is 128256, serno 3
via Connected, Loopback1
P 12.1.1.0/24, 1 successors, FD is 28160, serno 1
via Connected, FastEthernet0/0
P 13.1.1.0/24, 1 successors, FD is 28160, serno 2
via Connected, FastEthernet1/0
P 23.1.1.0/24, 2 successors, FD is 30720, serno 7
via 13.1.1.3 (30720/28160), FastEthernet1/0
via 12.1.1.2 (30720/28160), FastEthernet0/0
此时在查看R1上的路由表,如下:
R1#show ip route eigrp
2.0.0.0/32 is subnetted, 1 subnets
D 2.2.2.2 [90/156160] via 12.1.1.2, 00:08:48, FastEthernet0/0[PL4]
3.0.0.0/32 is subnetted, 1 subnets
D 3.3.3.3 [90/156160] via 13.1.1.3, 00:08:47, FastEthernet1/0
23.0.0.0/24 is subnetted, 1 subnets
D 23.1.1.0 [90/30720] via 13.1.1.3, 00:08:50, FastEthernet1/0
[90/30720] via 12.1.1.2, 00:08:50, FastEthernet0/0
可以看到,R1已经通过EIGRP协议从其他路由器学习到EIGRP路由,此时可以进行测试,如下:
R1#ping 2.2.2.2 source 1.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:
Packet sent with a source address of 1.1.1.1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 24/33/48 ms
R1#ping 3.3.3.3 source 1.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 3.3.3.3, timeout is 2 seconds:
Packet sent with a source address of 1.1.1.1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/37/48 ms
此时,R1可以与R2和R3的环回网段进行通信;同样的方法在R2和R3上进行测试,此实验完成。
转载于:https://blog.51cto.com/chenxinjie/1274512