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MSR系列路由器MPLS L3VPN CE-nPE配置

 

关键词：MSR;MPLS;BGP;VPN;CE;PE

 

一、组网需求：

vpna有2个站点：站点1和站点2，站点1的出口路由器CEA与PEA、PEB相连；站点2只挂在PEB上。CEA与PEA通过BGP学习vpna路由，CEA和PEB通过OSPF多实例学习路由

设备清单：MSR系列路由器3台

二、组网图：

 

三、配置步骤：

设备和版本：MSR系列、Version 5.20, Release 1509

CEA配置：

interface Ethernet0/0

 port link-mode route

 ip address 192.168.0.2 255.255.255.0

#

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 192.168.1.2 255.255.255.0

#

bgp 3

network 192.168.2.0

 undo synchronization

 peer 192.168.0.1 as-number 1

#

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

#

PEA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

#

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

 mpls

 mpls ldp

#

interface Ethernet0/1

 port link-mode route

 ip binding vpn-instance vpna

 ip address 192.168.0.1 255.255.255.0

#

interface LoopBack0

 ip address 1.1.1.1 255.255.255.255

#

bgp 1

 undo synchronization

 group 1 internal

 peer 1 connect-interface LoopBack0

 peer 2.2.2.2 group 1

 #

 ipv4-family vpnv4

  peer 1 enable

  peer 2.2.2.2 enable

  peer 2.2.2.2 group 1

 #

 ipv4-family vpn-instance vpna

  peer 192.168.0.2 as-number 3

  network 192.168.0.0

#

ospf 1

 area 0.0.0.0

  network 1.1.1.1 0.0.0.0

  network 1.2.0.0 0.0.0.255

#

PEB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

#

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

ip binding vpn-instance vpna

 ip address 172.32.0.1 255.255.255.0

#

interface Ethernet1/0

 port link-mode route

ip binding vpn-instance vpna

 ip address 192.168.1.1 255.255.255.0

#

interface LoopBack0

 ip address 2.2.2.2 255.255.255.255

#

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

  import-route ospf 2

#

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 2 router-id 192.168.1.1 vpn-instance vpna

 import-route bgp

 area 0.0.0.0

  network 172.32.0.0 0.0.0.255

  network 192.168.1.0 0.0.0.255

#

四、配置关键点：

1.      CEA上需要配置BGP和OSPF；

2.      PEA上需要配置CEA的EBGP连接，注意配置到bgp的vpn实例视图下；

3.      PEB上需要配置OSPF多实例；

五、实验分析

无