需求：模拟ISP客户起BGP互联。并发布电信和联通的路由前辍，
1、将发送的电信路由前辍AS设置为4837.团体属性设置为0:150
2、将发送的联路由前辍AS设置为3134，团体属性设置为0:199
定义发布电信路由时的策略
route-map bgp-out-dx permit 20
set as-path prepend 4837
!
route-map bgp-out-dx permit 30
set community 0:150
!
定义发布联通路由时的策略
route-map bgp-out-lt permit 20
set as-path prepend 3134
!
route-map bgp-out-lt permit 30
set community 0:199
!
router bgp 5600X
bgp router-id 103.246.134.255
neighbor x.x.x.x remote-as 244XX
neighbor x.x.x.x ebgp-multihop 5
在发布路由时应用策略
network 36.32.0.0/14 route-map bgp-out-lt
network 60.164.175.0/24 route-map bgp-out-dx
