网络规划设计
1、不开ldp协议，只开mpls
2、使用ospf 10类lsa传递
3、私网互通
NE1配置
pe1\]dis current-configuration sysname pe1 ip vpn-instance a ipv4-family route-distinguisher 1:1 tnl-policy p1 //调用隧道策略，让本实例走这个隧道策略 vpn-target 1:1 export-extcommunity vpn-target 1:1 import-extcommunity mpls lsr-id 1.1.1.1 mpls //只开mpls不开ldp segment-routing //开段路由功能 interface Ethernet1/0/0 undo shutdown ip address 10.0.12.1 255.255.255.0 ospf enable 1 area 0.0.0.0 undo dcn undo dcn mode vlan interface Ethernet1/0/1 undo shutdown ip binding vpn-instance a ip address 10.0.11.1 255.255.255.0 undo dcn undo dcn mode vlan interface LoopBack0 ip address 1.1.1.1 255.255.255.255 ospf enable 1 area 0.0.0.0 ospf prefix-sid index 1 //SID偏移值，每台设备都不能一样 interface NULL0 bgp 100 peer 3.3.3.3 as-number 100 peer 3.3.3.3 connect-interface LoopBack0 ipv4-family unicast undo synchronization peer 3.3.3.3 enable ipv4-family vpnv4 policy vpn-target peer 3.3.3.3 enable //建立vpnv4邻居 ipv4-family vpn-instance a peer 10.0.11.2 as-number 65100 //和ce设备建立 实例bgp ospf 1 opaque-capability enable //开10类lsa功能 segment-routing mpls //支持段路由mpls segment-routing global-block 16000 23999 //SRGB范围设置，所设备最好是一样，通过这个加上偏移值进行区分 area 0.0.0.0 tunnel-policy p1 //定义隧道策略强制使用sr-lsp，并设置ecmp负载 tunnel select-seq sr-lsp load-balance-number 2 NE2配置 sysname p mpls lsr-id 2.2.2.2 mpls segment-routing interface Ethernet1/0/0 undo shutdown ip address 10.0.12.2 255.255.255.0 ospf enable 1 area 0.0.0.0 undo dcn undo dcn mode vlan interface Ethernet1/0/1 undo shutdown ip address 10.0.23.2 255.255.255.0 ospf enable 1 area 0.0.0.0 undo dcn undo dcn mode vlan interface LoopBack0 ip address 2.2.2.2 255.255.255.255 ospf enable 1 area 0.0.0.0 ospf prefix-sid index 2 interface NULL0 ospf 1 opaque-capability enable segment-routing mpls segment-routing global-block 16000 23999 area 0.0.0.0 NE3配置 \[pe2\]dis current-configuration sysname pe2 ip vpn-instance a ipv4-family route-distinguisher 2:1 tnl-policy p1 vpn-target 1:1 export-extcommunity vpn-target 1:1 import-extcommunity segment-routing interface Ethernet1/0/0 undo shutdown ip address 10.0.23.3 255.255.255.0 ospf enable 1 area 0.0.0.0 undo dcn undo dcn mode vlan interface Ethernet1/0/1 undo shutdown ip binding vpn-instance a ip address 10.0.32.3 255.255.255.0 undo dcn undo dcn mode vlan interface LoopBack0 ip address 3.3.3.3 255.255.255.255 ospf enable 1 area 0.0.0.0 ospf prefix-sid index 3 interface NULL0 bgp 100 peer 1.1.1.1 as-number 100 peer 1.1.1.1 connect-interface LoopBack0 ipv4-family unicast undo synchronization peer 1.1.1.1 enable ipv4-family vpnv4 policy vpn-target peer 1.1.1.1 enable ipv4-family vpn-instance a peer 10.0.32.2 as-number 65101 ospf 1 opaque-capability enable segment-routing mpls segment-routing global-block 16000 23999 area 0.0.0.0 tunnel-policy p1 tunnel select-seq sr-lsp load-balance-number 2 CE就是普通bgo配置，比较简单省略！！！ 结果验证   互通测试  