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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,第 2 章,EIGRP,路由协议,配置,EIGRP,EIGRP,概述,EIGRP,操作运行,配置,EIGRP,验证,EIGRP,设置,第 2 章 EIGRP路由协议配置 EIGRP,1,EIGRP,特性:,快速收敛,减少带宽占用,支持多种网络层协议,EIGRP,概述,EnhancedIGRP,IPX RoutingProtocols,AppleTalk Routing Protocol,IP RoutingProtocols,IPX RoutingProtocols,AppleTalk Routing Protocol,IP RoutingProtocols,EIGRP 特性:EIGRP概述EnhancedIGRP,2,EIGRP,特征,更高级的距离向量,快速收敛,配置简单,比,OSPF,更少的局限,EIGRP 特征更高级的距离向量,3,EIGRP,特征,(,续),更快地更新,支持,VLSM,和不连续网络,无类路由,与现有,IGRP,网络兼容,支持,IPX,和,AppleTalk,EIGRP 特征(续)更快地更新,4,EIGRP,优点,多点传送代替广播,链路带宽和延迟,EIGRP metric=IGRP metric x 256(32 bit vs.24 bit),非均等的均衡负载,比,OSPF,更多的灵活性,EIGRP 优点多点传送代替广播,5,EIGRP,数据包,EIGRP,是高级的距离向量路由选择算法,和每个相邻设备自动建立关联关系,通过,IP,包交换路由信息,IP Header,Protocol Number,Frame Header,C,R,C,Packet Payload,Frame Payload,88-,EIGRP 6-TCP,17-UDP,EIGRP 数据包EIGRP 是高级的距离向量路由选择算法I,6,EIGRP,支持不同的拓扑结构,EIGRP,支持,Multiaccess(LANs),Point-to-point(HDLC),NBMA(Frame Relay),S0,A,B,S1,E,F,G,H,FrameRelay,D,C,Rest of the Core,EIGRP 支持不同的拓扑结构EIGRP 支持S0ABS1E,7,EIGRP,支持,IP,地址,EIGRP supports,Variable-length subnet masks(VLSMs),Hierarchical designs,/16,D,/27,/30,/24,World,N,M,A,P,O,B,S,R,C,EIGRP 支持 IP 地址EIGRP supports/1,8,EIGRP,支持路由归纳,EIGRP,可以完成路由归纳,有类的网络边界(默认),任意的网络边界(手工),172.16.0.0/24,10.0.0.0/18,192.168.42.0/27,172.16.0.0/16,172.16.0.0/16,192.168.42.0/24,EIGRP 支持路由归纳EIGRP 可以完成路由归纳172.,9,EIGRP Terminology,Neighbor TableAppleTalk,Destination Next Hop Router,Neighbor TableIPX,Destination Next Hop Router,Neighbor TableIP,Next-Hop Interface Router,EIGRP TerminologyNeighbor Tabl,10,EIGRP Terminology,Neighbor TableAppleTalk,Destination Next Hop Router,Neighbor TableIPX,Destination Next Hop Router,Neighbor TableIP,Next-Hop Interface Router,Topology TableAppleTalk,Destination 1 Next Router 1/Cost,Destination 1 Next Router 1/Cost,Topology TableIPX,Destination 1 Next Router 1/Cost,Destination 1 Next Router 1/Cost,Topology TableIP,Destination 1,EIGRP TerminologyNeighbor Tabl,11,EIGRP Terminology,Topology TableAppleTalk,Destination 1 Next Router 1/Cost,Destination 1 Next Router 1/Cost,Topology TableIPX,Destination 1 Next Router 1/Cost,Destination 1 Next Router 1/Cost,Topology TableIP,Destination 1,Routing TableAppleTalk,Destination 1 Next Router X,Destination 1 Next Router X,Routing TableIPX,Destination 1 Next Router X,Destination 1 Next Router X,Routing TableIP,Destination 1,Neighbor TableAppleTalk,Destination Next Hop Router,Neighbor TableIPX,Destination Next Hop Router,Neighbor TableIP,Next-Hop Interface Router,EIGRP TerminologyTopology Tabl,12,EIGRP Terminology,Topology TableAppleTalk,Destination 1 Next Router 1/Cost,Destination 1 Next Router 1/Cost,Topology TableIPX,Destination 1 Next Router 1/Cost,Destination 1 Next Router 1/Cost,Topology TableIP,Destination 1 Successor,Routing TableAppleTalk,Destination 1 Next Router X,Destination 1 Next Router X,Routing TableIPX,Destination 1 Next Router X,Destination 1 Next Router X,Routing TableIP,Destination 1 Successor,Neighbor TableAppleTalk,Destination Next Hop Router,Neighbor TableIPX,Destination Next Hop Router,Neighbor TableIP,Next-Hop Interface Router,EIGRP TerminologyTopology Tabl,13,EIGRP,术语,Topology TableAppleTalk,Destination 1 Next Router 1/Cost,Destination 1 Next Router 1/Cost,Topology TableIPX,Destination 1 Next Router 1/Cost,Destination 1 Next Router 1/Cost,Topology TableIP,Destination 1 Successor,Destination 1 Feasible Successor,Routing TableAppleTalk,Destination 1 Next Router X,Destination 1 Next Router X,Routing TableIPX,Destination 1 Next Router X,Destination 1 Next Router X,Routing TableIP,Destination 1 Successor,Neighbor TableAppleTalk,Destination Next Hop Router,Neighbor TableIPX,Destination Next Hop Router,Neighbor TableIP,Next-Hop Interface Router,EIGRP 术语Topology TableAppleTa,14,EIGRP,数据包,Hello:,用于发现邻居 以太网,:5,秒发送一次,.,慢速,T1,线路,60,秒发送一次,.,更新:发送路由更新,不定期,只发送变化的,路由更新,.,查询:查询相邻路由器信息,答复:答复路由信息的查询,确认:确认是用来确认更新、查询和答复,EIGRP 数据包Hello:用于发现邻居 以太网:5秒,15,EIGRP,相邻关系,两个路由器收到,Hello,包时认为时相邻路由,Hello address=224.0.0.10,一下连接下,Hello,每5秒送出一次:,以太网(,Ethernet),令牌环(,Token Ring),FDDI,点对点协议:,PPP,HDLC,点对点幀中继链路/,ATM,子端口,带宽高于,T1,的多点电路:,ISDN PRI,SMDS,Frame Relay,EIGRP 相邻关系两个路由器收到Hello包时认为时相邻路,16,EIGRP,相邻关系(续),以下连接下每60秒发出,Hello,包:,带宽低于,T1,的多点电路:,ISDN BRI,Frame Relay,SMDS,规定时间内没有收到,EIGRP,包的信息,Hold time,默认是,Hello time,的三倍,EIGRP 相邻关系(续)以下连接下每60秒发出Hello,17,邻居表,p2r2,p2r2#show ip eigrp neighbors,IP-EIGRP neighbors for process 400,H Address Interface Hold Uptime SRTT RTO Q Seq,(sec)(ms)Cnt Num,1 172.68.2.2 To0 13 02:15:30 8 200 0 9,0 172.68.16.2 Se1 10 02:38:29 29 200 0 6,邻居表p2r2p2r2#show ip eigrp neig,18,EIGRP,可靠性,EIGRP,可靠要求的数据包需要外部确认,:,更新,查询,响应,EIGRP,非可靠要求数据包不需要外部的确认,:,Hello,ACK(,确认),EIGRP 可靠性EIGRP 可靠要求的数据包需要外部确认:,19,I am router A,who is on the link?,Hello,A,B,1,初始化路由发现,I am router A,who is on the l,20,Here is my complete routing information.,Update,2,3,初始化路由发现,I am router A,who is on the link?,Hello,A,B,1,Here is my complete routing in,21,Thanks for the information!,Ack,3,5,初始化路由发现,Here is my complete routing information.,Update,2,I am router A,who is on the link?,Hello,A,B,1,Thanks
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