EIGRP路由協(xié)議的配置實例

1、EIGRP路由協(xié)議的配置實例EIGRP路由協(xié)議的配置拓?fù)鋱DEIGRP路由協(xié)議的配置實例解析R1(config)#router eigrp 100R1(config-router)#no auto-summary /關(guān)閉自動匯總R1(config-router)#net 192.168.1.0 /宣告路由條目R1(config-router)#endR2(config)#router eigrp 100R2(config-router)#no auto-summaryR2(config-router)#net 192.168.1.0R2(config-router)#net 10.1.0.0 0

2、.0.255.255 /宣告路由條目R2(config-router)#endR3(config)#router eigrp 100R3(config-router)#no auto-summaryR3(config-router)#net 192.168.1.0R3(config-router)#net 172.16.0.0 0.0.255.255R3(config-router)#end檢查：R1#show ip eigrp neighbors /查看eigrp 鄰居表，發(fā)現(xiàn)并沒有鄰居IP-EIGRP neighbors for process 100R1#show ip eigrp to

3、pology /查看EIGRP 拓?fù)浔?，并沒有學(xué)習(xí)到任何的路由IP-EIGRP Topology Table for AS(100)/ID(192.168.1.1)Codes: P Passive, A Active, U Update, Q Query, R Reply,r reply Status, s sia StatusP 192.168.1.0/24, 1 successors, FD is 2169856via Connected, Serial0/0因為幀中繼默認(rèn)為NBMA 模式，也就是非廣播的多路訪問模式，它會阻止廣播數(shù)據(jù)和組播數(shù)據(jù)，我們在接口配置過程中，幀中繼的DLCI 號和

4、IP 映射時也沒有配置broadcast 參數(shù)，而EIGRP 路由協(xié)議通過組播地址224.0.0.10 來發(fā)送相應(yīng)的路由信息(比如hello、update 等數(shù)據(jù)包)，所以R1 并沒有發(fā)現(xiàn)任何的鄰居路由器。為了能讓EIGRP的路由信息通過幀中繼傳播，在沒有配置broadcast 參數(shù)的情況下，我們可以通過單播的形式來發(fā)送EIGRP 數(shù)據(jù)包，我們對以上的配置進(jìn)行改進(jìn)：R1(config)#router eigrp 100R1(config-router)#neighbor 192.168.1.2 serial 0/0 /手工指定鄰居，實現(xiàn)單播方式R1(config-router)#neighbo

5、r 192.168.1.3 serial 0/0R1(config-router)#endR2(config)#router eigrp 100R2(config-router)#neighbor 192.168.1.1 serial 0/0 /手工指定鄰居，實現(xiàn)單播方式R2(config-router)#endR3(config)#router eigrp 100R3(config-router)#neighbor 192.168.1.1 serial 0/0 /手工指定鄰居，實現(xiàn)單播方式R3(config-router)#end驗證：*Mar 1 00:29:18.955: %DUAL-5

6、-NBRCHANGE: IP-EIGRP(0) 100: Neighbor 192.168.1.2 (Serial0/0) is up: new adjacency*Mar 1 00:29:19.115: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor 192.168.1.3 (Serial0/0) is up: new adjacencyR1#show ip eigrp neighborsIP-EIGRP neighbors for process 100H Address Interface Hold Uptime SRTT RTO Q Seq(s

7、ec) (ms) Cnt Num1 192.168.1.3 Se0/0 156 00:01:19 99 594 0 30 192.168.1.2 Se0/0 154 00:01:19 137 822 0 3R2#*Mar 1 00:29:18.979: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor 192.168.1.1 (Serial0/0) is up: new adjacencyR2#R2#show ip eigrp neighborIP-EIGRP neighbors for process 100H Address Interface Ho

8、ld Uptime SRTT RTO Q Seq(sec) (ms) Cnt Num0 192.168.1.1 Se0/0 138 00:02:31 171 1026 0 7R1#show ip route eigrp 100 /查看路由表，可以看到R1 能夠?qū)W習(xí)到R2 和R3 相應(yīng)的網(wǎng)絡(luò)172.16.0.0/24 is subnetted, 4 subnetsD 172.16.0.0 90/2297856 via 192.168.1.3, 00:03:45, Serial0/0D 172.16.1.0 90/2297856 via 192.168.1.3, 00:03:45, Serial0

9、/0D 172.16.2.0 90/2297856 via 192.168.1.3, 00:03:45, Serial0/0D 172.16.3.0 90/2297856 via 192.168.1.3, 00:03:45, Serial0/010.0.0.0/24 is subnetted, 4 subnetsD 10.1.3.0 90/2297856 via 192.168.1.2, 00:03:45, Serial0/0D 10.1.2.0 90/2297856 via 192.168.1.2, 00:03:45, Serial0/0D 10.1.1.0 90/2297856 via 1

10、92.168.1.2, 00:03:45, Serial0/0D 10.1.0.0 90/2297856 via 192.168.1.2, 00:03:45, Serial0/0R1#ping 10.1.0.1 /驗證是否可以訪問R2 的網(wǎng)絡(luò)Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 10.1.0.1, timeout is 2 seconds:!Success rate is 100 percent (5/5), round-trip min/avg/max = 20/56/104 msR1#ping 172

11、.16.0.1 /驗證是否可以訪問R3 的網(wǎng)絡(luò)Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 172.16.0.1, timeout is 2 seconds:!Success rate is 100 percent (5/5), round-trip min/avg/max = 8/52/124 ms查看R2 的路由表：R2#show ip routeCodes: C connected, S static, R RIP, M mobile, B BGPD EIGRP, EX EIGRP external, O

12、OSPF, IA OSPF inter areaN1 OSPF NSSA external type 1, N2 OSPF NSSA external type 2E1 OSPF external type 1, E2 OSPF external type 2i IS-IS, su IS-IS summary, L1 IS-IS level-1, L2 IS-IS level-2ia IS-IS inter area, * candidate default, U per-user static routeo ODR, P periodic downloaded static routeGat

13、eway of last resort is not set10.0.0.0/24 is subnetted, 4 subnetsC 10.1.3.0 is directly connected, Loopback3C 10.1.2.0 is directly connected, Loopback2C 10.1.1.0 is directly connected, Loopback1C 10.1.0.0 is directly connected, Loopback0C 192.168.1.0/24 is directly connected, Serial0/0發(fā)現(xiàn)R2 并沒有學(xué)習(xí)到R3

14、的172.16.0.0 網(wǎng)絡(luò)， R1 通過S0/0 接口學(xué)習(xí)到R3 宣告的172.16.0.0網(wǎng)絡(luò)，因為R1 s0/0 接口的水平分割機(jī)制導(dǎo)致R1 不會再由這個接口S0/0 發(fā)布出去，所以R2無法學(xué)習(xí)到R3 宣告的網(wǎng)絡(luò)，同理，R3 也無法學(xué)習(xí)到R2 宣告的網(wǎng)絡(luò)。對幀中繼配置進(jìn)行修正，使用broadcast 參數(shù)：R1(config)#router eigrp 100R1(config-router)#no neighbor 192.168.1.2 s0/0 /取消手工指定鄰居*Mar 1 00:42:29.807: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Nei

15、ghbor 192.168.1.2 (Serial0/0) is down:R1(config-router)#no neighbor 192.168.1.3 s0/0*Mar 1 00:42:32.623: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor 192.168.1.3 (Serial0/0) is down:R1(config-router)#exitR1(config)#int s0/0R1(config-if)#no fram map ip 192.168.1.2 102 /取消之前不帶broadcast 參數(shù)的靜態(tài)映射R1(confi

16、g-if)#no fram map ip 192.168.1.3 103R1(config-if)#frame map ip 192.168.1.2 102 broadcastR1(config-if)#frame map ip 192.168.1.3 103 broadcastR1(config-if)#endR2(config)#router eigrp 100R2(config-router)#no neighbor 192.168.1.1 Serial0/0R2(config-router)#int s0/0R2(config-if)#no frame-relay map ip 192

17、.168.1.1 201R2(config-if)# frame-relay map ip 192.168.1.1 201 broadcastR3(config)#router eigrp 100R3(config-router)#no neighbor 192.168.1.1 Serial0/0R3(config-router)#int s0/0R3(config-if)#no*Mar 1 00:47:58.943: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor 192.168.1.1 (Serial0/0) is up: new adjacenc

18、yR3(config-if)#no frame-relay map ip 192.168.1.1 301R3(config-if)#frame-relay map ip 192.168.1.1 301 broadcastR3(config-if)#end驗證結(jié)果：可以看到添加了broadcast 后，幀中繼可以正常的傳遞組播數(shù)據(jù)了，R1 就可以和R2 和R3 建立鄰居關(guān)系并正常學(xué)習(xí)到路由。R1#show ip eigrp neighborsIP-EIGRP neighbors for process 100H Address Interface Hold Uptime SRTT RTO Q S

19、eq(sec) (ms) Cnt Num1 192.168.1.3 Se0/0 178 00:00:03 906 5000 0 70 192.168.1.2 Se0/0 178 00:01:57 1040 5000 0 6R1#show ip route eigrp 100172.16.0.0/24 is subnetted, 4 subnetsD 172.16.0.0 90/2297856 via 192.168.1.3, 00:00:53, Serial0/0D 172.16.1.0 90/2297856 via 192.168.1.3, 00:00:53, Serial0/0D 172.

20、16.2.0 90/2297856 via 192.168.1.3, 00:00:53, Serial0/0D 172.16.3.0 90/2297856 via 192.168.1.3, 00:00:53, Serial0/010.0.0.0/24 is subnetted, 4 subnetsD 10.1.3.0 90/2297856 via 192.168.1.2, 00:02:46, Serial0/0D 10.1.2.0 90/2297856 via 192.168.1.2, 00:02:46, Serial0/0D 10.1.1.0 90/2297856 via 192.168.1

21、.2, 00:02:46, Serial0/0D 10.1.0.0 90/2297856 via 192.168.1.2, 00:02:46, Serial0/0查看R3 的路由表，發(fā)現(xiàn)R3 并沒有學(xué)習(xí)到R2 的網(wǎng)絡(luò)，這是因為R1 默認(rèn)情況下接口有水平。R3#show ip routeCodes: C connected, S static, R RIP, M mobile, B BGPD EIGRP, EX EIGRP external, O OSPF, IA OSPF inter areaN1 OSPF NSSA external type 1, N2 OSPF NSSA external

22、 type 2E1 OSPF external type 1, E2 OSPF external type 2i IS-IS, su IS-IS summary, L1 IS-IS level-1, L2 IS-IS level-2ia IS-IS inter area, * candidate default, U per-user static routeo ODR, P periodic downloaded static routeGateway of last resort is not set172.16.0.0/24 is subnetted, 4 subnetsC 172.16

23、.0.0 is directly connected, Loopback0C 172.16.1.0 is directly connected, Loopback1C 172.16.2.0 is directly connected, Loopback2C 172.16.3.0 is directly connected, Loopback3C 192.168.1.0/24 is directly connected, Serial0/0將R1 接口的水平分割關(guān)閉：R1(config)#interface serial 0/0R1(config-if)#no ip split-horizon

24、eigrp 100R1(config-if)#end當(dāng)R1 的水平分割關(guān)閉后，EIGRP 進(jìn)程會出現(xiàn)相應(yīng)提示：*Mar 1 00:52:25.055: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor 192.168.1.3 (Serial0/0) is resync: split horizon changed*Mar 1 00:52:25.055: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor 192.168.1.2 (Serial0/0) is resync: split horizon changed查看R1 接口S0/0 的情況：R1#show ip int s0/0 | include SplitSplit horizon is disabled查看R2 的路由表：R2#show ip route eigrp 100172.16.0.0/24 is subnetted, 4 subnetsD 172.16.0.0 90/2809856 via 192.168.1.1, 00:08:03, Serial0/0D 172.16.1.0 90/28098