【正文】 EBGP鄰居已建立步驟七：查看bgp轉(zhuǎn)發(fā)表R1sh ip bgpBGP table version is 5, local router ID is Status codes: s suppressed, d damped, h history, * valid, best, i internalOrigin codes: i IGP, e EGP, ? inplete Network Next Hop Metric LocPrf Weight Path* *** * 0 32768 iR2sh ip bgpBGP table version is 5, local router ID is Status codes: s suppressed, d damped, h history, * valid, best, i internalOrigin codes: i IGP, e EGP, ? inplete Network Next Hop Metric LocPrf Weight Path** * * * 0 32768 iR3sh ip bgpBGP table version is 5, local router ID is Status codes: s suppressed, d damped, h history, * valid, best, i internalOrigin codes: i IGP, e EGP, ? inplete Network Next Hop Metric LocPrf Weight Path* * * * 步驟八：用ping命令測試連通性或用擴(kuò)展ping命令R1ping !!!!!Success rate is 100 percent (5/5), roundtrip min/avg/max = 60/60/64 msR1ping !!!!!Success rate is 100 percent (5/5), roundtrip min/avg/max = 32/32/32 msR2ping !!!!!Success rate is 100 percent (5/5), roundtrip min/avg/max = 32/32/32 msR3ping !!!!!Success rate is 100 percent (5/5), roundtrip min/avg/max = 60/60/60 msr3ping !!!!!Success rate is 100 percent (5/5), roundtrip min/avg/max = 32/32/32 ms步驟九：查看配置R1sh runhostname R1!interface Loopback0 ip address !interface Loopback1 ip address !interface Serial0 ip address clockrate 64000!router eigrp 100 network network no autosummary!router bgp 65001 no synchronizationnetwork mask network mask neighbor remoteas 65001 neighbor updatesource Loopback0 no autosummary!endR2sh runhostname R2!interface Loopback0 ip address !interface Loopback1 ip address !interface Serial0 ip address !interface Serial1 ip address !router eigrp 100 network network no autosummary!router bgp 65001 no synchronizationnetwork mask network mask neighbor remoteas 65001 neighbor updatesource Loopback0 neighbor nexthopself neighbor remoteas 65002 neighbor ebgpmultihop 255 neighbor updatesource Loopback0 no autosummary!ip route ！endR3sh runHostname R3!interface Loopback0 ip address !interface Loopback1 ip address !interface Serial1 ip address clockrate 64000!router bgp 65002network mask neighbor remoteas 65001 neighbor ebgpmultihop 255 neighbor updatesource Loopback0 no autosummary!ip route end實(shí)驗(yàn)五、配置PIM autorp 環(huán)境：三臺路由器串口相連，其它的配置如圖所示要求：1. R1,R2,R3配置ospf 并把所有接口加入到area 0，配置R2為映射代理，步驟一：在每個(gè)路由器上配置1個(gè)loopback 口。IBGP鄰居已建立BGP neighbor is , remote AS 65002, external link BGP version 4, remote router ID BGP state = Established, up for 00:19:25 224。學(xué)來了BGP路由條目 , 1 subnetsB [200/0] via , 00:07:34 , 1 subnetsC is directly connected, Serial0R2sh ip routeCodes: C connected, S static, I IGRP, R RIP, M mobile, B BGP D EIGRP, EX EIGRP external, O OSPF, IA OSPF inter area N1 OSPF NSSA external type 1, N2 OSPF NSSA external type 2 E1 OSPF external type 1, E2 OSPF external type 2, E EGP i ISIS, L1 ISIS level1, L2 ISIS level2, ia ISIS inter area * candidate default, U peruser static route, o ODR P periodic downloaded static routeGateway of last resort is not set , 1 subnetsD [90/2297856] via , 00:14:09, Serial1 , 1 subnetsB [200/0] via , 00:14:05 , 1 subnetsC is directly connected, Loopback0 , 1 subnetsC is directly connected, Loopback1 , 1 subnetsC is directly connected, Serial0 , 1 subnetsS [1/0] via , 1 subnetsB [20/0] via , 00:18:07 , 1 subnetsC is directly connected, Serial1R3sh ip routeCodes: C connected, S static, I IGRP, R RIP, M mobile, B BGP D EIGRP, EX EIGRP external, O OSPF, IA OSPF inter area N1 OSPF NSSA external type 1, N2 OSPF NSSA external type 2 E1 OSPF external type 1, E2 OSPF external type 2, E EGP i ISIS, L1 ISIS level1, L2 ISIS level2, ia ISIS inter area * candidate default, U peruser static route, o ODR P periodic downloaded static routeGateway of last resort is not set , 1 subnetsB [20/0] via , 00:18:06 , 1 subnetsS [1/0] via , 1 subnetsB [20/0] via , 00:22:07 , 1 subnetsC is directly connected, Serial1 , 1 subnetsC is directly connected, Loopback0 , 1 subnetsC is directly connected, Loopback1 , 1 subnetsB [20/0] via , 00:22:09步驟五：查看bgp 概要信息R1sh ip bgp summaryBGP router identifier , local AS number 65001Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 4 65001 13 12 5 0 0 00:08:23 3R2sh ip bgp summaryBGP router identifier , local AS number 65001Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 4 65001 18 19 5 0 0 00:14:41 2 4 65002 22 23 5 0 0 00:18:42 1R3sh ip bgp summaryBGP router identifier , local AS number 65002NeighborV AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 4 65001 27 26 5 0 0 00:22:36 3步驟六：查看bgp鄰居R1sh ip bgp neighborsBGP neighbor is , remote AS 65001, internal link BGP version 4, remote router ID BGP state = Established, up for 00:10:41 224。因R2和R3運(yùn)行在不同的AS，所以要指靜態(tài)路由來達(dá)到可達(dá)性R3(config) ip route 224。指定ebgp鄰居R2(configro