NE1（pe1）
ip vpn-instance vpn
ipv4-family
route-distinguisher 100:100
tnl-policy p1 //把vpn实例引入到定义的p1策略中的te隧道
vpn-target 1:1 export-extcommunity
vpn-target 1:1 import-extcommunity
mpls lsr-id 1.1.1.1
mpls
mpls te //开mpls te功能
explicit-path te1 //定义显示标签路径，一条线各sid+SRGB过去对端，这里如何定义，ｃｅ的数据包就怎么走。
next sid label 16200 type prefix //先到中间的net2（P）设备
next sid label 16400 type prefix //再到对端net4(pe2)设备
segment-routing //全局开户段路由功能
interface Ethernet1/0/0
undo shutdown
ip binding vpn-instance vpn //绑定对端ce实例
ip address 192.168.0.1 255.255.255.0
undo dcn
undo dcn mode vlan
interface Ethernet1/0/1
undo shutdown
ip address 10.0.12.1 255.255.255.0
undo dcn
undo dcn mode vlan
interface Ethernet1/0/2
undo shutdown
ip address 10.0.13.1 255.255.255.0
undo dcn mode vlan
interface LoopBack0
ip address 1.1.1.1 255.255.255.255
ospf prefix-sid index 100 //自己本设备的node sid标签
interface Tunnel1 /／和对端ｐｅ２建立隧道
ip address unnumbered interface LoopBack0 ／／借用自己的ｌｏｏｐ地址
tunnel-protocol mpls te ／／指定隧道协议
destination 4.4.4.4 ／／对端ｐｅ地址
mpls te signal-protocol segment-routing ／／选择ｓｒ协议
mpls te tunnel-id 1 ／／本地有效
mpls te path explicit-path te1 ／／手工指定前面指定的显示路径，用于配合下面的隧道负载分担。
（如果有控制器这里就这样配：mpls te pce delegate 托管给pce server）
interface NULL0
bgp 100
peer 2.2.2.2 as-number 100
peer 2.2.2.2 connect-interface LoopBack0
ipv4-family unicast
undo synchronization
peer 2.2.2.2 enable
ipv4-family vpnv4 ／／全网建立ｖｐｎｖ４的ｂｇｐ邻居
policy vpn-target
peer 2.2.2.2 enable
ipv4-family vpn-instance vpn
peer 192.168.0.2 as-number 65001
ospf 1
opaque-capability enable ／／开ｏｓｐｆ１０类ｌｓａ功能
segment-routing mpls ／／开段路由标签分发功能
segment-routing global-block 16000 23999 ／／定义SRGB范围
area 0.0.0.0
network 0.0.0.0 255.255.255.255
mpls-te enable ／／开启TE功能
undo dcn
tunnel-policy p1 ／／定义策略，假设有２条路实现负载分担
tunnel select-seq sr-te load-balance-number 2
NE2（P）
mpls lsr-id 2.2.2.2
mpls
mpls te
segment-routing
interface Ethernet1/0/1
undo shutdown
ip address 10.0.12.2 255.255.255.0
undo dcn
undo dcn mode vlan
interface Ethernet1/0/2
undo shutdown
ip address 10.0.24.2 255.255.255.0
undo dcn mode vlan
interface Ethernet1/0/3
undo shutdown
undo dcn mode vlan
interface LoopBack0
ip address 2.2.2.2 255.255.255.255
ospf prefix-sid index 200
interface NULL0
bgp 100
peer 1.1.1.1 as-number 100
peer 1.1.1.1 connect-interface LoopBack0
peer 4.4.4.4 as-number 100
peer 4.4.4服务器托管.4 connect-interface LoopBack0
ipv4-family unicast
undo synchronization
peer 1.1.1.1 enable
peer 4.4.4.4 enable
ipv4-family vpnv4
undo policy vpn-target
peer 1.1.1.1 enable
peer 1.1.1.1 reflect-client
peer 4.4.4.4 enable
peer 4.4.4.4 reflect-client
ospf 1
opaque-capability enable
segment-routing mpls
segment-routing global-block 16000 23999
area 0.0.0.0
network 0.0.0.0 255.255.255.255
mpls-te enable
undo dcn
NE4（ＰＥ２）
ip vpn-instance vpn
ipv4-family
route-distinguisher 100:200
tnl-policy p1
vpn-target 1:1 export-extcommunity
vpn-target 1:1 import-extcommunity
mpls lsr-id 4.4.4.4
mpls
mpls te
explicit-path te1
next sid label服务器托管 16200 type prefix
next sid label 16100 type prefix
segment-routing
interface Ethernet1/0/0
undo shutdown
ip binding vpn-instance vpn
ip address 192.168.1.1 255.255.255.0
undo dcn
undo dcn mode vlan
interface Ethernet1/0/1
undo shutdown
undo dcn
undo dcn mode vlan
interface Ethernet1/0/2
undo shutdown
ip address 10.0.24.4 255.255.255.0
undo dcn mode vlan
interface Ethernet1/0/3
undo shutdown
ip address 10.0.34.4 255.255.255.0
undo dcn mode vlan
interface LoopBack0
ip address 4.4.4.4 255.255.255.255
ospf prefix-sid index 400
interface Tunnel1
ip address unnumbered interface LoopBack0
tunnel-protocol mpls te
destination 1.1.1.1
mpls te signal-protocol segment-routing
mpls te tunnel-id 1
mpls te path explicit-path te1
interface NULL0
bgp 100
peer 2.2.2.2 as-number 100
peer 2.2.2.2 connect-interface LoopBack0
ipv4-family unicast
undo synchronization
peer 2.2.2.2 enable
ipv4-family vpnv4
policy vpn-target
peer 2.2.2.2 enable
ipv4-family vpn-instance vpn
peer 192.168.1.2 as-number 65002
ospf 1
opaque-capability enable
segment-routing mpls
segment-routing global-block 16000 23999
area 0.0.0.0
network 0.0.0.0 255.255.255.255
mpls-te enable
undo dcn
tunnel-policy p1
tunnel select-seq sr-te load-balance-number 2
查看：
tracert lsp segment-routing te Tunnel 1
查看标签计算分配情况
display tunnel-info all
查看所有的隧道
display ip routing-table vpn-instance vpn 22.1.1.1 verbose
查看到对端22.1.1.1走的是哪个隧道
查看用了策略后走的是ｔｅ隧道，默认会走下面的ｂｅ隧道
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