MSR系列路由器MPLS L3VPN跨域方案A功能的配置 关键词：MSR;MPLS;L3VPN;跨域;OptionA 一、组网需求：
peA和asbrA在AS1，peB和asbrB在AS2；peA和peB都下挂着vpna和vpnb的站点，peA下挂vpna和vpnb站点1，peB下挂vpna和vpnb站点2。
设备清单：MSR系列4台 路由器
二、组网图：
三、配置步骤： peA： 配置 #
router id 3.3.3.3 #
ip vpn-instance vpna route-distinguisher 3:1
vpn-target 1:1 export-extcommunity vpn-target 1:1 import-extcommunity #
ip vpn-instance vpnb route-distinguisher 3:2
vpn-target 2:2 export-extcommunity vpn-target 2:2 import-extcommunity #
mpls lsr-id 3.3.3.3 # mpls #
mpls ldp #
interface Ethernet0/0 port link-mode route
ip address 1.3.0.3 255.255.255.0 mpls mpls ldp #
interface Ethernet0/1 port link-mode route
ip binding vpn-instance vpna
ip address 192.168.1.1 255.255.255.0 #
interface Ethernet1/0 port link-mode route
ip binding vpn-instance vpnb
ip address 172.32.1.1 255.255.255.0 #
interface LoopBack0
ip address 3.3.3.3 255.255.255.255． # bgp 1
undo synchronization peer 1.1.1.1 as-number 1
peer 1.1.1.1 connect-interface LoopBack0 #
ipv4-family vpnv4 peer 1.1.1.1 enable #
ipv4-family vpn-instance vpna import-route direct #
ipv4-family vpn-instance vpnb import-route direct # ospf 1 area 0.0.0.0
network 3.3.3.3 0.0.0.0 network 1.3.0.0 0.0.0.255 #
asbrA： 配置 router id 1.1.1.1
#
ip vpn-instance vpna route-distinguisher 1:1
vpn-target 1:1 export-extcommunity vpn-target 1:1 import-extcommunity #
ip vpn-instance vpnb
route-distinguisher 1:2．
vpn-target 2:2 export-extcommunity vpn-target 2:2 import-extcommunity #
mpls lsr-id 1.1.1.1 # mpls #
mpls ldp #
interface Ethernet0/0.1 //asbr间用子接口区分不同vpn流量 vlan-type dot1q vid 1
ip binding vpn-instance vpna ip address 1.2.1.1 255.255.255.0 #
interface Ethernet0/0.2 //asbr间用子接口区分不同vpn流量 vlan-type dot1q vid 2
ip binding vpn-instance vpnb ip address 1.2.2.1 255.255.255.0 #
interface Ethernet0/1 port link-mode route
ip address 1.3.0.1 255.255.255.0 mpls mpls ldp #
interface LoopBack0
ip address 1.1.1.1 255.255.255.255 # bgp 1
undo synchronization
peer 3.3.3.3 as-number 1 //asbr和pe间是标准L3VPN 配置connect-interface LoopBack0 #
ipv4-family vpnv4 peer 3.3.3.3 enable
peer 3.3.3.3
#
ipv4-family vpn-instance vpna //asbr间使用PE-CE模式传vpna路由 peer 1.2.1.2 as-number 2 #
ipv4-family vpn-instance vpnb //asbr间使用PE-CE模式传vpna路由 peer 1.2.2.2 as-number 2 # ospf 1 area 0.0.0.0
network 1.1.1.1 0.0.0.0 network 1.3.0.0 0.0.0.255 #
asbrB： 配置 #
router id 2.2.2.2 #
ip vpn-instance vpna route-distinguisher 2:1
vpn-target 1:1 export-extcommunity vpn-target 1:1 import-extcommunity #
ip vpn-instance vpnb route-distinguisher 2:2
vpn-target 2:2 export-extcommunity vpn-target 2:2 import-extcommunity #
mpls lsr-id 2.2.2.2 # mpls #
mpls ldp #
interface Ethernet0/0.1 //asbr间用子接口区分不同vpn流量 vlan-type dot1q vid 1
ip binding vpn-instance vpna ip address 1.2.1.2 255.255.255.0 #
interface Ethernet0/0.2 //asbr间用子接口区分不同vpn流量 vlan-type dot1q vid 2
ip binding vpn-instance vpnb ip address 1.2.2.2 255.255.255.0 #
interface Ethernet0/1 port link-mode route
ip address 2.4.0.2 255.255.255.0
mpls mpls ldp #
interface LoopBack0
ip address 2.2.2.2 255.255.255.255 # bgp 2
undo synchronization
peer 4.4.4.4 as-number 2 //asbr和pe间是标准L3VPN 配置 peer 4.4.4.4 connect-interface LoopBack0． #
ipv4-family vpnv4 peer 4.4.4.4 enable #
ipv4-family vpn-instance vpna //asbr间使用PE-CE模式传vpna路由 peer 1.2.1.1 as-number 1 #
ipv4-family vpn-instance vpnb //asbr间使用PE-CE模式传vpnb路由 peer 1.2.2.1 as-number 1 # ospf 1 area 0.0.0.0
network 2.2.2.2 0.0.0.0 network 2.4.0.0 0.0.0.255 #
peB： 配置
#
router id 4.4.4.4
ip vpn-instance vpna route-distinguisher 4:1
vpn-target 1:1 export-extcommunity vpn-target 1:1 import-extcommunity #
ip vpn-instance vpnb route-distinguisher 4:2
vpn-target 2:2 export-extcommunity vpn-target 2:2 import-extcommunity #
mpls lsr-id 4.4.4.4 #． mpls #
mpls ldp #
interface Ethernet0/0
H3CMSR系列路由器MPLSL3VPN跨域方案【ABC功能配置】
