文档介绍：MSR系列路由器MPLSL3VPN跨域方案A功能的配置关键词:MSR;MPLS;L3VPN;跨域;OptionA一、组网需求:peA和asbrA在AS1,peB和asbrB在AS2;peA和peB都下挂着vpna和vpnb的站点,peA下挂vpna和vpnb站点1,peB下挂vpna和vpnb站点2。设备清单:MSR系列路由器4台二、组网图:三、配置步骤:peA配置:##ipvpn-instancevpnaroute-distinguisher3:1vpn-target1:1export-munityvpn-target1:1import-munity#ipvpn-instancevpnbroute-distinguisher3:2vpn-target2:2export-munityvpn-target2:2import-munity#mplslsr-#mpls#mplsldp#0/0portlink-#0/1portlink-moderouteipbindingvpn-#1/0portlink-moderouteipbindingvpn-##--interfaceLoopBack0#ipv4-#ipv4-familyvpn-instancevpnaimport-routedirect#ipv4-familyvpn-instancevpnbimport-routedirect##asbrA配置:#ipvpn-instancevpnaroute-distinguisher1:1vpn-target1:1export-munityvpn-target1:1import-munity#ipvpn-instancevpnbroute-distinguisher1:2vpn-target2:2export-munityvpn-target2:2import-munity#mplslsr-#mpls#mplsldp#0///asbr间用子接口区分不同vpn流量vlan-typedot1qvid1ipbindingvpn-#0///asbr间用子接口区分不同vpn流量vlan-typedot1qvid2ipbindingvpn-#0/1portlink-##-number1//-interfaceLoopBack0#ipv4-#ipv4-familyvpn-instancevpna//asbr间使用PE--number2#ipv4-familyvpn-instancevpnb//asbr间使用PE--number2##asbrB配置:##ipvpn-instancevpnaroute-distinguisher2:1vpn-target1:1export-munityvpn-target1:1import-munity#ipvpn-instancevpnbroute-distingui