 5.3. IGRP路由协议基本配置 1. 启动IGRP路由协议，在全局配置模式下， router igrp 自治域号 同一自治域内的路由器才能交换路由信息 2. 本路由器参加动态路由的子网 net work 子网号 IGRP只是将由net work指定的子网在各端口中进行传送以交换路由信息，假如不指定子网，则路由器不会将该子网广播给其他路由器 3. 指定某路由器所知的IGRP路由信息广播给那些和其相邻接的路由器 neighbor 邻接路由器的相邻端口IP地址 IGRP是个广播型协议，为了使IGRP路由信息能在非广播型网络中传输，必须使用该配置，以允许路由器间在非广播型网络中交换路由信息，广播型网络如以太网无须配置此项。以上为IGRP的基本配置，通过该配置，路由器已能完全通过IGRP进行路由信息交换其他配置。 4. 不允许某个端口发送IGRP路由信息 passive-interface 端口号 一般地，在以太网上只有一台路由器时，IGRP广播没有任何意义，且浪费带宽，完万能够将其过滤掉。 5. 负载平衡配置 IGRP能够在两个进行IP通信的设备间同时启用四条线路，且任何一条路径断掉都不会影响其他路径的传输。 当两条路径或多条路径的metric相同或在一定的范围内，就能够启动平衡功能。 1. 配置是否使用负载平衡功能 traffic-share balanced 或min balanced 表示启用负载平衡min表示不启用负载平衡, 只走最优路径。 2 . 配置路径间的metric相差多大时，能够在路径间启用负载平衡 variance metric 差值 缺省值为1，表示只有两条路径metric相同时才能在两条路径上启用负载平衡。 实例： 2511－1的配置 Current configuration： ！ version 11.3 no service password-encryption ! hostname 2511-1 ! enable password cisco ! ! interface Ethernet0 ip address 192.4.1.1 255.255.255.0 ! interface Serial0 ip address 192.3.1.1 255.255.255.0 encapsulation frame-relay IETF no ip mroute-cache bandwidth 2000 frame-relay map ip 192.3.1.2 100 broadcast frame-relay lmi-type cisco ! interface Serial1 ip address 192.1.1.1 255.255.255.0 encapsulation ppp bandwidth 64 ! router igrp 10 passive-interface Ethernet0 network 192.1.1.0 255.255.255.0 network 192.3.1.0 255.255.255.0 network 192.4.1.0 255.255.255.0 neighbor 192.1.1.2 neighbor 192.3.1.2 ! ip classless ! line con 0 line 1 8 line aux 0 line vty 0 4 ! end 2505的配置 Current configuration: ! version 11.2 no service udp-small-servers no service tcp-small-servers ! hostname 2505 ! enable secret 5 $1$GbYT$OR05giiLZxl4hEAO0F8kV1 ! ! hub ether 0 1 link-test auto-polarity ! hub ether 0 2 link-test auto-polarity ! hub ether 0 3 link-test auto-polarity ! hub ether 0 4 link-test auto-polarity ! hub ether 0 5 link-test auto-polarity ! hub ether 0 6 link-test auto-polarity ! hub ether 0 7 link-test auto-polarity ! hub ether 0 8 link-test auto-polarity ! interface Ethernet0 ip address 192.1.4.1 255.255.255.0 ! interface Serial0 ip address 192.1.2.1 255.255.255.0 bandwidth 2000 clockrate 2000000 ! interface Serial1 ip address 192.1.1.2 255.255.255.0 enpsuration ppp bandwidth 64 clockrate 64000 ! router igrp 10 passive-interface Ethernet0 network 192.1.1.0 255.255.255.0 network 192.1.2.0 255.255.255.0 network 192.1.4.0 255.255.255.0 neighbor 192.1.1.1 neighbor 192.1.2.2 ! no ip classless ! line con 0 line aux 0 line vty 0 4 login ! end internal-2的配置 Current configuration : ! ! version 11.2 no service udp-small-servers no service tcp-small-servers ! hostname internal-2 ! enable secret 5 $1$KX00$rTI/2TvDokWxT4xC6wvmi/ ! ! interface Ethernet0 no ip address shutdown ! interface Serial0 ip address 192.1.2.2 255.255.255.0 ! interface Serial1 no ip address shutdown ! router igrp 10 network 192.1.2.0 255.255.255.0 neighbor 192.1.2.1 ! no ip classless ! line con 0 line 1 16 line aux 0 line vty 0 4 login ! end 2514的配置 Current configuration : ! ! version 11.2 no service udp-small-servers no service tcp-small-servers ! hostname 2514 ! enable secret 5 $1$uoHU$Vks/lY CRi33z4TXs4qekI0 ! frame-relay switching ! interface Ethernet0 ip address 192.5.1.1 255.255.255.0 ! interface Ethernet1 no ip address shutdown ! interface Serial0 ip address 192.3.1.2 255.255.255.0 encapsulation frame-relay IETF bandwidth 2000 clockrate 2000000 frame-relay map ip 192.3.1.1 100 broadcast frame-relay intf-type dce ! interface Serial1 ip address 192.2.1.1 255.255.255.0 no ip mroute-cache encapsulation X25 dce bandwidth 64 x25 address 1234 x25 htc 16 x25 nvc 4 x25 map ip 192.2.1.2 5678 broadcast clockrate 64000 ! router igrp 10 passive-interfce Ethernet0 network 192.3.1.0 255.255.255.0 network 192.2.1.0 255.255.255.0 network 192.5.1.0 255.255.255.0 neighbor 192.2.1.2 neighbor 192.3.1.1 ! no ip classless ! line con 0 line aux 0 line vty 0 4 login ! end 2511-2的配置 Building configuration… Current configuration: version 11.3 no service password-encryption ! hostname 2511-2 ! enable secret 5 $1$7o5F$MSyFWzVf6JBgnjLJghHSB. ! interface Ethernet0 ip address 192.2.4.1 255.255.255.0 ! interface Serial0 ip address 192.2.1.2 255.255.255.0 encapsulation x25 no ip mroute-cache x25 address 5678 x25 htc 16 x25 nvc 4 x25 map ip 192.2.1.1 1234 broadcast ! interface Serial1 ip address 192.2.2.1 255.255.255.0 no ip mroute-cache bandwidth 2000 clockrate 2000000 ! router igrp 10 network 192.2.2.0 255.255.255.0 network 192.2.4.0 255.255.255.0 network 192.2.1.0 255.255.255.0 neighbor 192.2.1.1 neighbor 192.2.2.2 ! ip classless ! line con 0 line 1 8 line aux 0 line vty 0 4 login ! end internal -1的配置 Building configuration… Current configuration: version 11.2 no service udp-small-servers no service tcp-small-servers ! hostname internal-1 ! enable secret 5 $1$cF2M$z2T8Ohij5q/yn2RsiVaGE/ ! ! interface Ethernet0 no ip address shutdown ! interface Serial0 ip address 192.2.2.2 255.255.255.0 ! interface Serial1 no ip address shutdown ! router igrp 10 network 192.2.2.0 255.255.255.0 neighbor 192.2.2.1 ! no ip classless ! line con 0 line 1 16 line aux 0 line vty 0 4 login ! end |
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