华为mpls Optionc 方案1 配置

实验拓扑:接口地址为各路由器编号对应的网段

配置步骤：

1.配置各接口IP

-AR1:
interface GigabitEthernet0/0/0
 ip address 12.0.0.1 255.255.255.0 

interface LoopBack0
 ip address 11.11.11.11 255.255.255.255 
 
interface LoopBack1
 ip address 1.1.1.1 255.255.255.255 

-AR2:

interface GigabitEthernet0/0/0
 ip address 12.0.0.2 255.255.255.0 

interface GigabitEthernet0/0/1
 ip address 23.0.0.2 255.255.255.0 
 
 interface LoopBack0
 ip address 2.2.2.2 255.255.255.255 

-AR3:

interface GigabitEthernet0/0/0
 ip address 34.0.0.3 255.255.255.0 

interface GigabitEthernet0/0/1
 ip address 23.0.0.3 255.255.255.0 

interface GigabitEthernet0/0/2
 ip address 39.0.0.3 255.255.255.0 

interface LoopBack0
 ip address 3.3.3.3 255.255.255.255 
 
-AR4:

interface GigabitEthernet0/0/0
 ip address 34.0.0.4 255.255.255.0 

interface GigabitEthernet0/0/1
 ip address 45.0.0.4 255.255.255.0 

interface LoopBack0
 ip address 4.4.4.4 255.255.255.255 

-AR9:
interface GigabitEthernet0/0/2
 ip address 39.0.0.9 255.255.255.0 

interface LoopBack0
 ip address 9.9.9.9 255.255.255.255 

2.配置区域内ospf以及mpls

-R2-
ospf 1 router-id 2.2.2.2                  
 area 0.0.0.0 
  network 2.2.2.2 0.0.0.0 
  network 23.0.0.0 0.0.0.255 
  
 mpls
 mpls ldp 
 
interface GigabitEthernet0/0/1
 mpls
 mpls ldp
  
-R3-
ospf 1 router-id 3.3.3.3 
 area 0.0.0.0 
  network 3.3.3.3 0.0.0.0 
  network 23.0.0.0 0.0.0.255 
  network 34.0.0.0 0.0.0.255 
  network 39.0.0.0 0.0.0.255 
 
 mpls
 mpls ldp 
 
 interface GigabitEthernet0/0/0
 mpls
 mpls ldp

interface GigabitEthernet0/0/1 
 mpls
 mpls ldp

interface GigabitEthernet0/0/2
 mpls
 mpls ldp

-R4-
ospf 1 router-id 4.4.4.4 
 area 0.0.0.0 
  network 4.4.4.4 0.0.0.0 
  network 34.0.0.0 0.0.0.255 
 
 mpls
 mpls ldp 
 
 interface GigabitEthernet0/0/0
 mpls
 mpls ldp
  
-R9-

ospf 1 router-id 9.9.9.9 
 area 0.0.0.0 
  network 9.9.9.9 0.0.0.0 
  network 39.0.0.0 0.0.0.255 
 
 mpls
 mpls ldp 
 
interface GigabitEthernet0/0/2
 mpls
 mpls ldp

3.配置PE,P,ASBR 与RR之间的IBGP,并设置RR的反射客户体

-R2-
bgp 100
 router-id 2.2.2.2
 peer 9.9.9.9 as-number 100 
 peer 9.9.9.9 connect-interface LoopBack0

-R3-
bgp 100
 router-id 3.3.3.3
 peer 9.9.9.9 as-number 100 
 peer 9.9.9.9 connect-interface LoopBack0
-R4-
bgp 100
 peer 9.9.9.9 as-number 100 
 peer 9.9.9.9 connect-interface LoopBack0

-R9-
bgp 100
 router-id 9.9.9.9                        
 peer 2.2.2.2 as-number 100 
 peer 2.2.2.2 connect-interface LoopBack0
 peer 3.3.3.3 as-number 100 
 peer 3.3.3.3 connect-interface LoopBack0
 peer 4.4.4.4 as-number 100 
 peer 4.4.4.4 connect-interface LoopBack0
 
 peer 2.2.2.2 reflect-client
 peer 3.3.3.3 reflect-client
 peer 4.4.4.4 reflect-client

4.设置ASBR间的EBGP(使用直连接口建立)

R4-ASBR
bgp 100
 peer 45.0.0.5 as-number 200 

5.在PE上配置VPN实例,配置RD,RT ,配置接口关联vpn实例,与CE客户端建立Ebgp邻居

R2-PE
//创建vpn实例
ip vpn-instance test
  route-distinguisher 100:1
  vpn-target 100:1 both
关联接口
interface GigabitEthernet0/0/0
 ip binding vpn-instance test
 ip address 12.0.0.2 255.255.255.0 
 
 配置与CE的EBGP邻居
 
 bgp 100
 ipv4-family vpn-instance test 
  peer 12.0.0.1 as-number 65001 

R1-ce
bgp 65001                                 
 router-id 1.1.1.1
 peer 12.0.0.2 as-number 100 

6.配置PE与RR,RR间的MP-BGP

R2与R9  R9与R10
R9
bgp 100
 peer 10.10.10.10 ebgp-max-hop 255 
 peer 10.10.10.10 connect-interface LoopBack0
            
 ipv4-family vpnv4
  undo policy vpn-target
  peer 2.2.2.2 enable
  peer 2.2.2.2 reflect-client
  peer 2.2.2.2 next-hop-invariable   //设置RR在传递路由器时不改变下一跳
  peer 10.10.10.10 enable
  peer 10.10.10.10 next-hop-invariable 

R2
bgp 100
 ipv4-family vpnv4
  policy vpn-target
  peer 9.9.9.9 enable

6.1 配置ASBR 将PE1和RR的lookback 地址发布给ASBR2,进而发布给RR2和PE2

R4-ASBR
bgp 100
net 9.9.9.9 32
net 2.2.2.2 32
//bgp 基于tcp建立连接,首先保证网络层互通,才能建立BGP邻居,R4通过IGP学习到9.9.9.9 优于BGP,因此不会将路由信息宣告,所以需要在R4上重新宣告,保证R10到R9路由可达,建立EBGP邻居

7.配置PE与RR, RR与ASBR,ASBR与ASBR间相互 交换标签IPV4路由的能力

R2-PE 与RR
bgp 100
peer 9.9.9.9 label-route-capability

RR
bgp 100
 peer 2.2.2.2 label-route-capability
 peer 4.4.4.4 label-route-capability
 
ASBR
bgp 100
  peer 9.9.9.9 label-route-capability
  peer 45.0.0.5 label-route-capability

8.配置本端ASBR向远端ASBR,本端ASBR向RR发布的路由应用路由策略

r4-ASBR

route-policy policy1 permit node 10 
 apply mpls-label                         

route-policy policy2 permit node 10 
 if-match mpls-label 
 apply mpls-label
 
 bgp 100
  peer 9.9.9.9 route-policy policy2 export  //带标签接入,会生成新标签
  peer 45.0.0.5 route-policy policy1 export  //相对端发送时携带标签
  
 interface GigabitEthernet0/0/1
 mpls  //启用数据层面的mpls ,保证带标签的数据能通过

结果:
AR9-RR上验证mp-bgp邻居

查看路由学习情况

r1-ce上测试

参考链接:https://blog.youkuaiyun.com/tushanpeipei/article/details/113096193