防火墙旁挂，策略路由引流

1、案例拓扑图

2、核心设备AR2的主要配置

2.1
AR2
#
acl number 2000
rule 5 permit source 192.168.1.0 0.0.0.255 //匹配需要过滤的路由
#
traffic classifier liu operator or
if-match acl 2000
#
traffic behavior liu
redirect ip-nexthop 2.1.1.6
#
traffic policy liu
classifier liu behavior liu

interface GigabitEthernet0/0/0
ip address 1.1.1.5 255.255.255.252
traffic-policy liu inbound //策略应用在数据的入方向
2.2
关键点，困扰了我很久（如果不下发默认路由，会导致两个ospf进程，相互学习不到对方的业务地址）
ospf 1
default-route-advertise always //都要下发一条默认路由
ospf 2
default-route-advertise alw