MSR路由器MPLS L3VPN + OSPF + Sham-Link功能的配置

MSR路由器

MPLS L3VPN + OSPF + Sham-Link功能的配置

 

关键词：MSR;MPLS;BGP;VPN;L3VPN;OSPF多实例;Sham-Link

 

一、组网需求：

2台PE各接着一个vpna的站点，PEA连接vpna站点1出口CEA，PEB连接vpna站点2出口CEB，PEA与CEA、PEB与CEB通过OSPF多实例学习CEA下挂站点路由，CEA和CEB有一条旁路，要求PEA和PEB的OSPF多实例建立伪连接

设备清单：MSR路由器4台

二、组网图：

三、配置步骤：

设备和版本：MSR、Version 5.20, Beta 1105。

CEA配置

# interface Ethernet0/0  port link-mode route  ip address 192.168.1.2 255.255.255.0 # interface Ethernet0/1  port link-mode route  ip address 192.168.2.1 255.255.255.0 # interface Ethernet1/0  port link-mode route  ip address 172.16.2.2 255.255.255.252 # ospf 1  area 0.0.0.0   network 192.168.1.0 0.0.0.255   network 192.168.2.0 0.0.0.255   network 172.16.2.0 0.0.0.3 #

CEB配置

# interface Ethernet0/0  port link-mode route  ip address 172.32.2.2 255.255.255.0 # interface Ethernet0/1  port link-mode route  ip address 172.16.1.1 255.255.255.0 # interface Ethernet1/0  port link-mode route  ip address 172.16.2.1 255.255.255.252 # ospf 1  area 0.0.0.0   network 172.32.2.0 0.0.0.255   network 172.16.1.0 0.0.0.255   network 172.16.2.0 0.0.0.3 #

PEA配置

#  router id 1.1.1.1 # //配置vpn实例vpna ip vpn-instance vpna  route-distinguisher 1:1  vpn-target 100:1 export-extcommunity  vpn-target 100:1 import-extcommunity # mpls lsr-id 1.1.1.1 # mpls # mpls ldp # interface Ethernet0/0  port link-mode route  ip address 1.2.0.1 255.255.255.0  //接口使能mpls和ldp  mpls  mpls ldp # interface Ethernet0/1  port link-mode route  //连接vpna站点1出口CEA的接口  ip binding vpn-instance vpna  ip address 192.168.1.1 255.255.255.0 # interface LoopBack0  ip address 1.1.1.1 255.255.255.255 # //用于建立伪连接的Loopback口 interface LoopBack1  ip binding vpn-instance vpna  ip address 192.1.1.1 255.255.255.255 # bgp 100  undo synchronization  peer 2.2.2.2 as-number 100  peer 2.2.2.2 connect-interface LoopBack0  #  //使能vpnv4路由传送  ipv4-family vpnv4   peer 2.2.2.2 enable  #  //引入vpna的路由  ipv4-family vpn-instance vpna   import-route direct # ospf 1  area 0.0.0.0   network 1.2.0.0 0.0.0.255   network 1.1.1.1 0.0.0.0 # //ospf进程100学习vpna路由 ospf 100 router-id 192.1.1.1 vpn-instance vpna  area 0.0.0.0   network 192.168.1.0 0.0.0.255   //建立伪连接的源和目的   sham-link 192.1.1.1 172.2.2.2 #

PEB配置

#  router id 2.2.2.2 # //配置vpn实例vpna ip vpn-instance vpna  route-distinguisher 2:1  vpn-target 100:1 export-extcommunity  vpn-target 100:1 import-extcommunity # mpls lsr-id 2.2.2.2 # mpls # mpls ldp # interface Ethernet0/0  port link-mode route  ip address 1.2.0.2 255.255.255.0  mpls  mpls ldp # interface Ethernet0/1  port link-mode route //连接vpna站点1出口CEB的接口  ip binding vpn-instance vpna  ip address 192.168.2.1 255.255.255.0 # interface LoopBack0  ip address 2.2.2.2 255.255.255.255 # interface LoopBack1  //用于建立伪连接的loopback口 ip binding vpn-instance vpna  ip address 172.2.2.2 255.255.255.255 # bgp 100  undo synchronization  peer 1.1.1.1 as-number 100  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 # ospf 1  area 0.0.0.0   network 2.2.2.2 0.0.0.0   network 1.2.0.0 0.0.0.255 # ospf 100 router-id 172.2.2.2 vpn-instance vpna  domain-id 0.0.0.100  area 0.0.0.0   network 192.168.2.0 0.0.0.255   //建立伪连接的源和目的   sham-link 172.2.2.2 192.1.1.1 #

 

四、配置关键点：

1) 在vpna站点间存在旁路时需要建立伪连接；

2) PEA和PEB需要建立vpna的loopback口用于建立伪连接；

3) 伪连接要指定源和目的。