内容发布更新时间 : 2026/6/22 5:33:59星期一 下面是文章的全部内容请认真阅读。
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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系列路由器4台
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
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#
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
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# 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
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