MPLS-RIP实验文档
Ip 地址如上图，Loopback 0 分别为 x.x.x.x/32R1/R5是CE。R2/R3/R4是ISP：R2/R4是PE，R3是P。步骤一、ISP内部 运行IGP（OSPF）协议
R2：router ospf 1 router-id 2.2.2.2 log-adjacency-changes network 2.2.2.2 0.0.0.0 area 0 network 23.0.0.2 0.0.0.0 area 0R3：router ospf 1 router-id 3.3.3.3 log-adjacency-changes network 3.3.3.3 0.0.0.0 area 0 network 23.0.0.3 0.0.0.0 area 0 network 34.0.0.3 0.0.0.0 area 0R4：router ospf 1 router-id 4.4.4.4 log-adjacency-changes network 4.4.4.4 0.0.0.0 area 0 network 34.0.0.4 0.0.0.0 area 0 配置完检查邻居关系的建立：R3: R3#sh ip os nei Neighbor ID Pri State Dead Time Address Interface4.4.4.4 0 FULL/- 00:00:38 34.0.0.4 Serial1/12.2.2.2 0 FULL/- 00:00:32 23.0.0.2 Serial1/0 R2/R4上show ip route 查看路由是否学到R2# sh ip route 34.0.0.0/24 is subnetted, 1 subnetsO 34.0.0.0 via 23.0.0.3, 00:16:25, Serial1/1 2.0.0.0/32 is subnetted, 1 subnetsC 2.2.2.2 is directly connected, Loopback0 3.0.0.0/32 is subnetted, 1 subnetsO 3.3.3.3 via 23.0.0.3, 00:16:25, Serial1/1 4.0.0.0/32 is subnetted, 1 subnetsO 4.4.4.4 via 23.0.0.3, 00:16:25, Serial1/1 23.0.0.0/24 is subnetted, 1 subnetsC 23.0.0.0 is directly connected, Serial1/1 步骤二、ISP内部实现MPLSR2：mpls label range 200 300mpls ldp route-id lo 0int s 1/1mpls ipR3:mpls label range 300 400mpls ldp route-id lo 0int s 1/1mpls ipint s 1/0mpls ipR4:mpls label range 400 500mpls ldp route-id lo 0int s 1/0mpls ip 然后在R3上查看LDP 邻居的建立： R3#sh mpls ldp neighbor Peer LDP Ident: 2.2.2.2:0; Local LDP Ident 3.3.3.3:0 TCP connection: 2.2.2.2.646 - 3.3.3.3.33300 State: Oper; Msgs sent/rcvd: 34/37; Downstream Up time: 00:23:03 LDP discovery sources: Serial1/0, Src IP addr: 23.0.0.2 Addresses bound to peer LDP Ident: 23.0.0.2 2.2.2.2 Peer LDP Ident: 4.4.4.4:0; Local LDP Ident 3.3.3.3:0 TCP connection: 4.4.4.4.32962 - 3.3.3.3.646 State: Oper; Msgs sent/rcvd: 25/28; Downstream Up time: 00:14:27 LDP discovery sources: Serial1/1, Src IP addr: 34.0.0.4 Addresses bound to peer LDP Ident: 34.0.0.4 4.4.4.4 LDP邻居建立完成即可。 步骤三、ISP 中R2与R4（PE之间）建立MBPG-VPN关系R2：router bgp 1no au 默认关闭的no syn 默认关闭的 no bgp default ipv4-unicast bgp log-neighbor-changes neighbor 4.4.4.4 remote-as 1 neighbor 4.4.4.4 update-source Loopback0 ! address-family vpnv4neighbor 4.4.4.4 activateneighbor 4.4.4.4 send-community extended exit-address-familyR4：router bgp 1 no au no syn no bgp default ipv4-unicast bgp log-neighbor-changes neighbor 2.2.2.2 remote-as 1 neighbor 2.2.2.2 update-source Loopback0 ! address-family vpnv4neighbor 2.2.2.2 activateneighbor 2.2.2.2 send-community extended exit-address-family 检查邻居是否建立成功： R4# sh ip bg vpn all summary Neighbor V AS MsgRcvd MsgSent TblVerInQ OutQ Up/DownState/PfxRcd2.2.2.2 4 1 35 33 9 0 0 00:25:47 2 R2# sh ip bg vpn all suNeighbor V AS MsgRcvd MsgSent TblVerInQ OutQ Up/DownState/PfxRcd4.4.4.4 4 1 34 36 9 0 0 00:26:14 2 步骤四、VRF的导入导出R2/R4创建VRFip vrf RIP rd 1:1 route-target export 1:1 route-target import 1:1接口下启用VRFR2interface Serial1/0 I p vrf forwarding RIPR4interface Serial1/1 ip vrf forwarding RIP PE-CE间使用RIP路由协议R1：router rip version 2 network 1.0.0.0 network 12.0.0.0 no auto-summary R2：router rip version 2 no auto-summary ! address-family ipv4 vrf RIPnetwork 12.0.0.0no auto-summary exit-address-family R5：router rip version 2 network 5.0.0.0 network 45.0.0.0 no auto-summary R4router rip version 2 no auto-summary ! address-family ipv4 vrf RIPnetwork 45.0.0.0no auto-summary exit-address-family R2/R4 VRF 和BGP路由相互重分布R2/R4router rip version 2 no auto-summary router bg1 address-family ipv4 vrf RIPredistribute bgp 1 metric transparent 度量透传，即METRIC不改变no auto-summary exit-address-family R2/R4 上检查VRF路由是否学到R2#sh ip bg vpn all Network Next Hop Metric LocPrf Weight PathRoute Distinguisher: 1:1 (default for vrf RIP)*> 1.1.1.1/32 12.0.0.1 1 32768 ?*>i5.5.5.5/32 4.4.4.4 1 100 0 ?*> 12.0.0.0/24 0.0.0.0 0 32768 ?*>i45.0.0.0/24 4.4.4.4 0 100 0 ? 查看R1/R5路由是否学到：R1# sh ip route Codes: C - connected, S - static, 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 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route Gateway of last resort is not set 1.0.0.0/32 is subnetted, 1 subnetsC 1.1.1.1 is directly connected, Loopback0 5.0.0.0/32 is subnetted, 1 subnetsR 5.5.5.5 via 12.0.0.2, 00:00:05, Serial1/1 12.0.0.0/24 is subnetted, 1 subnetsC 12.0.0.0 is directly connected, Serial1/1 45.0.0.0/24 is subnetted, 1 subnetsR 45.0.0.0 via 12.0.0.2, 00:00:05, Serial1/1 步骤五、测试MPLS ，查看转发过程标签转换情况 单方向从R1-R5观察： R1#traceroute 5.5.5.5 Type escape sequence to abort.Tracing the route to 5.5.5.5 1 12.0.0.2 48 msec 48 msec 32 msec2 23.0.0.3 112 msec 120 msec 160 msec3 45.0.0.4 108 msec 120 msec 108 msec4 45.0.0.5 128 msec *104 msec R2#sh ip cef vrf RIP detail 5.5.5.5/32, version 9, epoch 0, cached adjacency to Serial1/10 packets, 0 bytestag information set local tag: VPN-route-head fast tag rewrite with Se1/1, point2point, tags imposed: {301 403}via 4.4.4.4, 0 dependencies, recursive next hop 23.0.0.3, Serial1/1 via 4.4.4.4/32 valid cached adjacencytag rewrite with Se1/1, point2point, tags imposed: {301 403} R3#sh mpls forwarding-table LocalOutgoing Prefix Bytes tagOutgoing Next Hop tag tag or VC or Tunnel Id switched interface 301 Pop tag 4.4.4.4/32 4760 Se1/1 point2point R4#sh ip cef vrf RIP detail5.5.5.5/32, version 10, epoch 0, cached adjacency to Serial1/10 packets, 0 bytestag information set local tag: 403via 45.0.0.5, Serial1/1, 0 dependencies next hop 45.0.0.5, Serial1/1 valid cached adjacency tag rewrite with Se1/1, point2point, tags imposed: {}
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