MPLS组网案例
组网需求：
1.各路由器基本信息配置
2.OSPF规范配置，修改网络类型为点对点
3.所有路由器运行OSPF，RT4 E3/0、RT5 E3/0 network至OSPF中，RT1E3/0重发布直连到OSPF中
4.所有路由器运行MPLS，标签分发协议为LDP 5.RT4和RT5运行IBGP，并将E3/1发布至BGP中
IP地址分配如下:
前面配置略 IGP配置如下： RT1：
router ospf 1 router-id 1.1.1.1
passive-interface default no passive-interface Serial0/1 no passive-interface Serial0/2
redistribute connected metric 1000 subnets network 1.1.1.1 0.0.0.0 area 0 network 10.0.12.0 0.0.0.3 area 0 network 10.0.13.0 0.0.0.3 area 0 RT2：
router ospf 1 router-id 2.2.2.2
passive-interface default
no passive-interface Serial0/0 no passive-interface Serial0/1 no passive-interface FastEthernet1/0 network 2.2.2.2 0.0.0.0 area 0 network 10.0.12.0 0.0.0.3 area 0 network 10.0.23.0 0.0.0.3 area 0 network 10.0.24.0 0.0.0.3 area 0 interface f1/0
ip ospf network point-to-point RT3:
router ospf 1 router-id 3.3.3.3
passive-interface default no passive-interface Serial0/0 no passive-interface Serial0/1 no passive-interface FastEthernet1/0 network 3.3.3.3 0.0.0.0 area 0 network 10.0.13.0 0.0.0.3 area 0 network 10.0.23.0 0.0.0.3 area 0 network 10.0.35.0 0.0.0.3 area 0 interface f1/0
ip ospf network point-to-point
RT4:
router ospf 1 router-id 4.4.4.4
passive-interface default no passive-interface Serial0/0 network 4.4.4.4 0.0.0.0 area 0 network 10.0.24.0 0.0.0.3 area 0 network 172.16.4.0 0.0.0.255 area 0 RT5:
router ospf 1 router-id 5.5.5.5
passive-interface default no passive-interface Serial0/0 network 5.5.5.5 0.0.0.0 area 0 network 10.0.35.0 0.0.0.3 area 0 network 172.16.5.0 0.0.0.255 area 0 MPLS配置：
RT1、RT2、RT3、RT4、RT5如下配置： 全局配置模式：
ip cef //运行MPLS必须开启CEF mpls ip //开启MPLS
