图一拓扑图

一、实验目的

1.配置BGP/MPLS 虚拟专用网络 Option B

二、BGP/MPLS 虚拟专用网络 Option B

1.底层路由协议可以配置为OSPF、ISIS等
2.利用MPLS为每条路由或每个实例分配一个标签，进行数据包的传输
3.利用BGP VPNv4传递私网路由
4.ASBR之间相连的接口，使能MPLS功能
5.ASBR之间建立BGP VPNv4关系

三、简单配置

1.CE_1

sysname CE_1
#
interface GigabitEthernet0/0/0
 ip address 10.0.12.1 255.255.255.0 
#
interface LoopBack1
 ip address 1.1.1.1 255.255.255.255 
#
ospf 1 
 area 0.0.0.0 
  network 1.1.1.1 0.0.0.0 
  network 10.0.12.0 0.0.0.255 
#
return

2.CE_2

sysname CE_2
#
interface GigabitEthernet0/0/0
 ip address 10.0.22.1 255.255.255.0 
#
interface LoopBack1
 ip address 9.9.9.9 255.255.255.255 
#
ospf 1 
 area 0.0.0.0 
  network 9.9.9.9 0.0.0.0 
  network 10.0.22.0 0.0.0.255 
#
return

3.PE_1

sysname PE_1
#
ip vpn-instance vpna
 ipv4-family
  route-distinguisher 1:1
  vpn-target 1:1 export-extcommunity
  vpn-target 1:1 import-extcommunity
#
ip vpn-instance vpnb
 ipv4-family
  route-distinguisher 2:1
  vpn-target 2:2 export-extcommunity
  vpn-target 2:2 import-extcommunity
#
mpls lsr-id 2.2.2.2
mpls
#
mpls ldp
#
interface GigabitEthernet0/0/0
 ip binding vpn-instance vpna
 ip address 10.0.12.2 255.255.255.0 
#
interface GigabitEthernet0/0/1
 ip address 10.0.13.1 255.255.255.0 
 mpls
 mpls ldp
#
interface GigabitEthernet2/0/0
 ip binding vpn-instance vpnb
 ip address 10.0.22.2 255.255.255.0 
#
interface LoopBack1
 ip address 2.2.2.2 255.255.255.255 
#
bgp 100
 peer 4.4.4.4 as-number 100 
 peer 4.4.4.4 connect-interface LoopBack1
 #
 ipv4-family unicast
  undo synchronization
  peer 4.4.4.4 enable
 # 
 ipv4-family vpnv4
  policy vpn-target
  peer 4.4.4.4 enable
 #
 ipv4-family vpn-instance vpna 
  import-route ospf 2
 #
 ipv4-family vpn-instance vpnb 
  import-route ospf 3
#
ospf 1 
 area 0.0.0.0 
  network 2.2.2.2 0.0.0.0 
  network 10.0.13.0 0.0.0.255 
#
ospf 2 vpn-instance vpna
 import-route bgp
 area 0.0.0.0 
  network 10.0.12.0 0.0.0.255 
#
ospf 3 vpn-instance vpnb
 import-route bgp
 area 0.0.0.0 
  network 10.0.22.0 0.0.0.255 
#
return

4.P_1

sysname P_1
#
mpls lsr-id 3.3.3.3
mpls
#
mpls ldp
#
interface GigabitEthernet0/0/0
 ip address 10.0.14.1 255.255.255.0 
 mpls
 mpls ldp
#
interface GigabitEthernet0/0/1
 ip address 10.0.13.2 255.255.255.0 
 mpls
 mpls ldp
#
interface LoopBack3
 ip address 3.3.3.3 255.255.255.255 
#
ospf 1 
 area 0.0.0.0 
  network 3.3.3.3 0.0.0.0 
  network 10.0.13.0 0.0.0.255 
  network 10.0.14.0 0.0.0.255 
#
return

5.ASBR_PE1

sysname ASBR_PE1
#
ip vpn-instance vpna
 ipv4-family
  route-distinguisher 1:3
  vpn-target 1:1 export-extcommunity
  vpn-target 1:1 2:2 import-extcommunity
#
mpls lsr-id 4.4.4.4
mpls
#
mpls ldp
#
interface GigabitEthernet0/0/0
 ip address 10.0.14.2 255.255.255.0 
 mpls
 mpls ldp
#
interface GigabitEthernet0/0/1
 ip address 10.0.15.1 255.255.255.0 
 mpls
#
interface LoopBack1
 ip address 4.4.4.4 255.255.255.255 
#
bgp 100
 peer 2.2.2.2 as-number 100 
 peer 2.2.2.2 connect-interface LoopBack1
 peer 10.0.15.2 as-number 200 
 #
 ipv4-family unicast
  undo synchronization
  peer 2.2.2.2 enable
  peer 10.0.15.2 enable
 # 
 ipv4-family vpnv4
  undo policy vpn-target
  peer 2.2.2.2 enable
  peer 10.0.15.2 enable
#
ospf 1 
 area 0.0.0.0 
  network 4.4.4.4 0.0.0.0 
  network 10.0.14.0 0.0.0.255 
#
return

6.ASBR_PE2

sysname ASBR_PE2
#
ip vpn-instance vpna
 ipv4-family
  route-distinguisher 1:4
  vpn-target 1:1 export-extcommunity
  vpn-target 1:1 2:2 import-extcommunity
#
ip vpn-instance vpnb
#
mpls lsr-id 5.5.5.5
mpls
#
mpls ldp
#
interface GigabitEthernet0/0/0
 ip address 10.0.16.1 255.255.255.0 
 mpls
 mpls ldp
#
interface GigabitEthernet0/0/1
 ip address 10.0.15.2 255.255.255.0 
 mpls
#
interface LoopBack1
 ip address 5.5.5.5 255.255.255.255 
#
bgp 200
 peer 7.7.7.7 as-number 200 
 peer 7.7.7.7 connect-interface LoopBack1
 peer 10.0.15.1 as-number 100 
 #
 ipv4-family unicast
  undo synchronization
  peer 7.7.7.7 enable
  peer 10.0.15.1 enable
 # 
 ipv4-family vpnv4
  undo policy vpn-target
  peer 7.7.7.7 enable
  peer 10.0.15.1 enable
#
ospf 1 
 area 0.0.0.0 
  network 5.5.5.5 0.0.0.0 
  network 10.0.16.0 0.0.0.255 
#
return

7.P_2

sysname P_2
#
mpls lsr-id 6.6.6.6
mpls
#
mpls ldp
#
interface GigabitEthernet0/0/0
 ip address 10.0.16.2 255.255.255.0 
 mpls
 mpls ldp
#
interface GigabitEthernet0/0/1
 ip address 10.0.17.1 255.255.255.0 
 mpls
 mpls ldp
#
interface LoopBack1
 ip address 6.6.6.6 255.255.255.255 
#
ospf 1 
 area 0.0.0.0 
  network 6.6.6.6 0.0.0.0 
  network 10.0.16.0 0.0.0.255 
  network 10.0.17.0 0.0.0.255 
#
return

8.PE_2

sysname PE_2
#
ip vpn-instance vpna
 ipv4-family
  route-distinguisher 1:2
  vpn-target 1:1 export-extcommunity
  vpn-target 1:1 import-extcommunity
#
ip vpn-instance vpnb
 ipv4-family
  route-distinguisher 2:2
  vpn-target 2:2 export-extcommunity
  vpn-target 2:2 import-extcommunity
#
mpls lsr-id 7.7.7.7
mpls
#
mpls ldp
#
interface GigabitEthernet0/0/0
 ip binding vpn-instance vpna
 ip address 10.0.18.1 255.255.255.0 
#
interface GigabitEthernet0/0/1
 ip address 10.0.17.2 255.255.255.0 
 mpls
 mpls ldp
#
interface GigabitEthernet2/0/0
 ip binding vpn-instance vpnb
 ip address 10.0.23.2 255.255.255.0 
#
interface LoopBack1
 ip address 7.7.7.7 255.255.255.255 
#
bgp 200
 peer 5.5.5.5 as-number 200 
 peer 5.5.5.5 connect-interface LoopBack1
 #
 ipv4-family unicast
  undo synchronization
  peer 5.5.5.5 enable
 # 
 ipv4-family vpnv4
  policy vpn-target
  peer 5.5.5.5 enable
 #
 ipv4-family vpn-instance vpna 
  import-route ospf 2
 #
 ipv4-family vpn-instance vpnb 
  import-route ospf 3
#
ospf 1 
 area 0.0.0.0 
  network 7.7.7.7 0.0.0.0 
  network 10.0.17.0 0.0.0.255 
#
ospf 2 vpn-instance vpna
 import-route bgp
 area 0.0.0.0 
  network 10.0.18.0 0.0.0.255 
#
ospf 3 vpn-instance vpnb
 import-route bgp
 area 0.0.0.0 
  network 10.0.23.0 0.0.0.255 
#
return

9.CE_3

sysname CE_3
#
interface GigabitEthernet0/0/0
 ip address 10.0.18.2 255.255.255.0 
#
interface LoopBack1
 ip address 8.8.8.8 255.255.255.255 
#
ospf 1 
 area 0.0.0.0 
  network 8.8.8.8 0.0.0.0 
  network 10.0.18.0 0.0.0.255 
#
return

10.CE_4

sysname CE_4
#
interface GigabitEthernet0/0/0
 ip address 10.0.23.1 255.255.255.0 
#
interface LoopBack1
 ip address 10.10.10.10 255.255.255.255 
#
ospf 1 
 area 0.0.0.0 
  network 10.0.23.0 0.0.0.255 
  network 10.10.10.10 0.0.0.0 
#
return