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MSR系列路由器MPLS 多角色主机功能的配置

 

关键词：MSR;MPLS;BGP;policy-based-route

 

一、组网需求：

PEA和PEB是VPN站点接入路由器。PEA和PEB建立MP-IBGP连接，互相为VPN路由分发标签。PC为多角色主机，可以访问vpna和vpnb。

设备清单：MSR系列路由器2台，主机一台

二、组网图：

三、配置步骤：

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

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

#

ip vpn-instance vpnb

route-distinguisher 1:2

vpn-target 1:2 export-extcommunity

vpn-target 1:2 import-extcommunity

#

mpls lsr-id 1.1.1.1

#

mpls

#

mpls ldp

#

acl number 2000     //多角色主机的ACL

rule 0 permit vpn-instance vpna source 192.168.0.2 0

#

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

ip policy-based-route multirole   //绑定多角色策略路由

#

interface Ethernet1/0

port link-mode route

ip binding vpn-instance vpna

ip address 192.168.1.1 255.255.255.0

#

interface Ethernet1/1

port link-mode route

ip binding vpn-instance vpnb

ip address 172.32.0.1 255.255.255.0

#

interface LoopBack0

ip address 1.1.1.1 255.255.255.255

#

bgp 1

undo synchronization

peer 2.2.2.2 as-number 1

peer 2.2.2.2 connect-interface LoopBack0

#

ipv4-family vpnv4

peer 2.2.2.2 enable

#

ipv4-family vpn-instance vpna

import-route direct

#

ipv4-family vpn-instance vpnb

import-route direct

import-route static     //引入vpnb的静态路由

#

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

#

policy-based-route multirole permit node 0    //多角色策略路由

if-match acl 2000

apply access-vpn vpn-instance vpna vpnb

#

ip route-static vpn-instance vpnb 192.168.0.2 255.255.255.255 vpn-instance vpna 192.168.0.2         //vpnb的静态路由

#

PEB配置：

#

router id 2.2.2.2

#

ip vpn-instance vpnb

route-distinguisher 2:2

vpn-target 1:2 export-extcommunity

vpn-target 1:2 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 vpnb

ip address 172.32.1.1 255.255.255.0

#

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 vpnb

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

#

四、配置关键点：

在MPLS L3VPN正确的基础上：

1.      PEA上的ACL与普通的ACL不同，需要指定vpn实例；

2.      需要定义策略路由；

3.      需要定义vpnb静态访问多角色主机的静态路由；

4.      BGP还要引入静态路由。

五、实验分析

无