實例解析EIGRP浮動匯總路由配置-

1、實例解析EIGRP浮動匯總路由配置EIGRP是增強網(wǎng)關(guān)內(nèi)部路由線路協(xié)議。也翻譯為加強型內(nèi)部網(wǎng)關(guān)路由協(xié)議。EIGRP 是Cisco公司的私有協(xié)議。EIGRP協(xié)議繼承了IGRP協(xié)議的最大的優(yōu)點是矢量路由權(quán)。EIGRP協(xié)議在路由計算中要對網(wǎng)絡(luò)帶寬、網(wǎng)絡(luò)時延、信道占用率和信道可信度等因素作全面的綜合考慮,所以EIGRP的路由計算更為準(zhǔn)確,更能反映網(wǎng)絡(luò)的實際情況,下面讓我們看一下EIGRP浮動匯總路由配置過程。EIGRP浮動匯總路由配置過程如下:EIGRP浮動匯總路由配置之拓?fù)鋱DEIGRP浮動匯總路由配置之接口連接1Router1S0/0<->Router2S0/02Router2S0/1&

2、lt;->Router3S0/03Router1S0/1<->Router4S0/04Router3S0/1<->Router4S0/15VPCS V0/1<->Router1E1/06VPCS V0/2<->Router3E1/0EIGRP浮動匯總路由配置之原理在R1R2R3R4上均運行EIGRP路由協(xié)議。R4通過S0/1向R3通告一條0.0.0.00.0.0.0的匯總路由,并將這條浮動路由的管理距離設(shè)置為250,于是在網(wǎng)絡(luò)連通的情況下R3上到達(dá)200.1.1.0/24網(wǎng)段的路由經(jīng)過R2,而在R2與R3鏈路故障的時候,通過R3前往200.

3、1.1.0/24的數(shù)據(jù)包會通過R4(R3拓?fù)浔碇?默認(rèn)路由由A變?yōu)镻EIGRP浮動匯總路由配置之關(guān)鍵配置7R1:8interface Serial0/09ip address192.168.1.1255.255.255.010serial restart-delay011!12interface Serial0/113ip address192.168.3.1255.255.255.014serial restart-delay015!16interface Ethernet1/017ip address200.1.1.254255.255.255.018half-duplex19!20rou

4、ter eigrp10021network192.168.1.022network192.168.3.023network200.1.1.024no auto-summaryR2、R3略,參照R1進(jìn)行接口IP和路由協(xié)議的配置,重點看下R4的配置25R4:26interface Serial0/027ip address192.168.3.2255.255.255.028serial restart-delay029!30interface Serial0/131ip address192.168.4.1255.255.255.032ip summary-address eigrp1000.0.

5、0.00.0.0.0250(向R3通過默認(rèn)路由,管理距離高于EIGRP默認(rèn)值!33router eigrp10034network192.168.3.035network192.168.4.036auto-summaryEIGRP浮動匯總路由配置之查看結(jié)果1.R2和R3之間鏈路正常時aR3的路由表:1R3#sh ip route2Codes:C-connected,S-static,I-IGRP,R-RIP,M-mobile,B-BGP3D-EIGRP,EX-EIGRP external,O-OSPF,IA-OSPF inter area4N1-OSPF NSSA external type1

6、,N2-OSPF NSSA external type25E1-OSPF external type1,E2-OSPF external type2,E-EGP6i-IS-IS,su-IS-IS summary,L1-IS-IS level-1,L2-IS-IS level-2 7ia-IS-IS inter area,*-candidate default,U-per-user static route8o-ODR,P-periodic downloaded static route9Gateway of last resort is192.168.4.1to network0.0.0.01

7、0D200.1.1.0/2490/2707456via192.168.2.1,00:00:02,Serial0/011C200.1.2.0/24is directly connected,Ethernet1/012C192.168.4.0/24is directly connected,Serial0/113D192.168.1.0/2490/2681856via192.168.2.1,00:00:02,Serial0/0 14C192.168.2.0/24is directly connected,Serial0/015D192.168.3.0/2490/3193856via192.168.

8、2.1,00:00:02,Serial0/0 16D*0.0.0.0/090/2681856via192.168.4.1,00:00:00,Serial0/1bR3的拓?fù)浔?17R3#sh ip eigrp topology18IP-EIGRP Topology Table for AS(100/ID(200.1.2.25419Codes:P-Passive,A-Active,U-Update,Q-Query,R-Reply,20r-reply Status,s-sia Status21A0.0.0.0/0,1successors,FD is Inaccessible221replies,ac

9、tive00:00:00,query-origin:Successor Origin23Remaining replies:24via192.168.2.1,r,Serial0/025P192.168.1.0/24,1successors,FD is268185626via192.168.2.1(2681856/2169856,Serial0/027P192.168.2.0/24,1successors,FD is216985628via Connected,Serial0/029P192.168.3.0/24,1successors,FD is319385630via192.168.2.1(

10、3193856/2681856,Serial0/031P192.168.4.0/24,1successors,FD is216985632via Connected,Serial0/133P200.1.1.0/24,1successors,FD is270745634via192.168.2.1(2707456/2195456,Serial0/035P200.1.2.0/24,1successors,FD is28160036via Connected,Ethernet1/02.R2的S0/1設(shè)置為DOWN,觀察R3路由表和拓?fù)浔韆R3路由表:37R3#sh ip route38Codes:C

11、-connected,S-static,I-IGRP,R-RIP,M-mobile,B-BGP39D-EIGRP,EX-EIGRP external,O-OSPF,IA-OSPF inter area40N1-OSPF NSSA external type1,N2-OSPF NSSA external type241E1-OSPF external type1,E2-OSPF external type2,E-EGP42i-IS-IS,su-IS-IS summary,L1-IS-IS level-1,L2-IS-IS level-2 43ia-IS-IS inter area,*-candi

12、date default,U-per-user static route44o-ODR,P-periodic downloaded static route45Gateway of last resort is192.168.4.1to network0.0.0.046C200.1.2.0/24is directly connected,Ethernet1/047C192.168.4.0/24is directly connected,Serial0/148C192.168.2.0/24is directly connected,Serial0/049D*0.0.0.0/090/2681856via192.168.4.1,00:00:05,Serial0/1bR3的拓?fù)浔?50R3#sh ip eigrp topology51IP-EIGRP Topology Table for AS(100/ID(200.1.2.25452Codes:P-Passive,A-Active,U-Update,Q-Query,R-Reply,53r-reply Status,s-sia Status54P0.0.0.0/0,1successors,FD is268185655via192.168.4.1(2681856/2169856,Serial0/156P192.168.4.0/2