【正文】 Input OutputUnicast Packets 0 0Multicast Packets 0 0Broadcast Packets 0 3Discards 0 0Unknown Proto Discards 0 ==============================================================================================================================================================Ethernetlike Medium Statistics===============================================================================Alignment Errors : 0 Sngl Collisions : 0 FCS Errors : 0 Mult Collisions : 0 SQE Test Errors : 0 Late Collisions : 0 CSE : 0 Excess Collisns : 0 Too long Frames : 0 Int MAC Tx Errs : 0 Symbol Errors : 0 Int MAC Rx Errs : 0 ===============================================================================*A:sim170 show service id 31 sap 1/1/4:30 /查看vlan狀態(tài)/===============================================================================Service Access Points(SAP)===============================================================================Service Id : 31 SAP : 1/1/4:30 Encap : qtag Admin State : Up Oper State : Up Flags : NoneMulti Svc Site : None Last Status Change : 08/06/2008 14:54:53 Last Mgmt Change : 08/06/2008 14:54:38 ===============================================================================注意：該步驟出現(xiàn)的問(wèn)題一般應(yīng)該檢查端口是收連接正常，鏈路質(zhì)量是否正常。*A:PE1config port 2/1/1 *A:PE1configport ethernet mode access*A:PE1configport no shutdown*A:PE1configport exit*A:PE1configservicevprn back*A:PE1configservice vprn 200 customer 1 create *A:PE1configservicevprn$ routedistinguisher 500:200 *A:PE1configservicevprn$ vrftarget import target:500:200 export target:500:100 *A:PE1configservicevprn$ interface GE2/1/1 create *A:PE1configservicevprnif$ address *A:PE1configservicevprnif$ sap 2/1/1 create *A:PE1configservicevprnifsap$ back *A:PE1configservicevprnif$ back *A:PE1configservicevprn autobind ldp *A:PE1configservicevprn no shutdown 配置PE2。并在CE上配置默認(rèn)路由，使其有到對(duì)端CE相連網(wǎng)段的路由。l PE3上創(chuàng)建二個(gè)VPRN實(shí)例，并配置路由策略實(shí)現(xiàn)RT的靈活控制。3. 數(shù)據(jù)準(zhǔn)備數(shù)據(jù)規(guī)劃如下：l PE1上創(chuàng)建一個(gè)VPRN實(shí)例。(2) 在PE3上配置二個(gè)VPRN實(shí)例VPNA和VPNB，接入CECE4。PCPC3只能訪問(wèn)VPNB。PC、。5. 配置文件(1) SpokePE1的配置文件(2) SpokePE2的配置文件(3) HUBPE3的配置文件 配置多角色主機(jī)示例1. 組網(wǎng)需求如圖53，CECE3屬于VPNB，CECE4屬于VPNA。*A:SpokePE2 configure router *A:SpokePE2configrouter autonomoussystem 500 *A:SpokePE2configrouter bgp *A:SpokePE2configrouterbgp group mpls *A:SpokePE2configrouterbgpgroup$ family vpnipv4 *A:SpokePE2configrouterbgpgroup$ type internal *A:SpokePE2configrouterbgpgroup$ localaddress *A:SpokePE2configrouterbgpgroup$ neighbor *A:SpokePE2configrouterbgpgroupneighbor$ loopdetect*A:SpokePE2configrouterbgpgroupneighbor$ back *A:SpokePE2configrouterbgpgroup back *A:SpokePE2configrouterbgp 配置HubPE。 配置SpokePE1。*A:HUBPE3 configure router policyoptions *A:HUBPE3configrouterpolicyoptions begin *A:HUBPE3configrouterpolicyoptions policystatement vpnbgp *A:HUBPE3configrouterpolicyoptionspolicystatement$ entry 1 *A:HUBPE3configrouterpolicyoptionspolicystatemententry$ to protocol bgp *A:HUBPE3configrouterpolicyoptionspolicystatemententry action accept *A:HUBPE3configrouterpolicyoptionspolicystatemententryaction back *A:HUBPE3configrouterpolicyoptionspolicystatemententry back *A:HUBPE3configrouterpolicyoptionspolicystatement back *A:HUBPE3configrouterpolicyoptions mit *A:HUBPE3configrouterpolicyoptions exit*A:HUBPE3 configure service *A:HUBPE3configservice vprn 100 customer 1 create *A:HUBPE3configservicevprn autonomoussystem 500 *A:HUBPE3configservicevprn bgp *A:HUBPE3configservicevprnbgp$ group ce *A:HUBPE3configservicevprnbgpgroup type external *A:HUBPE3configservicevprnbgpgroup peeras 300 *A:HUBPE3configservicevprnbgpgroup family ipv4 *A:HUBPE3configservicevprnbgpgroup localaddress *A:HUBPE3configservicevprnbgpgroup neighbor *A:HUBPE3configservicevprnbgpgroupneighbor loopdetect off*A:HUBPE3configservicevprnbgpgroupneighbor back *A:HUBPE3configservicevprnbgpgroup back *A:HUBPE3configservicevprnbgp back *A:HUBPE3configservicevprn no shutdown*A:HUBPE3configservicevprn back*A:HUBPE3configservice vprn 200 customer 1 create *A:HUBPE3configservicevprn autonomoussystem 500 *A:HUBPE3configservicevprn bgp *A:HUBPE3configservicevprnbgp$ group ce *A:HUBPE3configservicevprnbgpgroup type external *A:HUBPE3configservicevprnbgpgroup peeras 300 *A:HUBPE3configservicevprnbgpgroup family ipv4 *A:HUBPE3configservicevprnbgpgroup localaddress *A:HUBPE3configservicevprnbgpgroup neighbor *A:HUBPE3configservicevprnbgpgroupnei