Cisco ·ÓÉÆ÷ÅäÖãº
!
version 12.3
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R1
!
!
ip subnet-zero
no ip source-route
ip cef
ip vrf vpn_a
 rd 2:1
 route-target export 111:1
 route-target import 111:1
 route-target import 111:2
!
ip vrf vpn_b
 rd 3:304
 route-target export 222:304
 route-target export 111:2
 route-target import 222:3
 route-target import 111:1
!
mpls label protocol ldp
mpls ldp logging neighbor-changes
no ftp-server write-enable
!
!
!
!
interface Loopback0
 ip address 192.168.40.1 255.255.255.255
 ip router isis 
!
interface Loopback200
 ip vrf forwarding vpn_a
 ip address 10.10.64.1 255.255.255.0
!
interface Loopback300
 ip vrf forwarding vpn_b
 ip address 10.10.65.1 255.255.255.0
!
interface ATM2/0
 no ip address
 no atm ilmi-keepalive
!
interface ATM2/0.1 point-to-point
 ip address 192.168.34.4 255.255.255.0
 ip router isis 
 pvc 1/134 
  protocol ip 192.168.34.3
  brvpn_adcast
  encapsulation aal5snap
 !
 tag-switching ip
!
router isis 
 net 47.0001.0000.0000.4444.00
!
router bgp 65888
 no synchronization
 bgp router-id 192.168.40.1
 bgp log-neighbor-changes
 neighbor rr-server peer-group
 neighbor rr-server remote-as 65888
 neighbor rr-server update-source Loopback0
 neighbor 192.168.30.1 peer-group rr-server
 no auto-summary
 !
 address-family vpnv4
 neighbor 192.168.30.1 activate
 neighbor 192.168.30.1 send-community both
 exit-address-family
 !
 address-family ipv4 vrf vpn_b
 redistribute connected
 no auto-summary
 no synchronization
 exit-address-family
 !
no ip http server
ip classless
!
!
!
!
line con 0
line aux 0
line vty 0 4
 login
!
!
end

Juniper ·ÓÉÆ÷ÅäÖÃ:

version 6.0R1.5;
system {
    host-name R2;
    login {
        user juny {
            uid 2001;
            class super-user;
            authentication {
                encrypted-password "$1$fhr423rkSB$0/fnrTsdfljwerWbeHX0"; # SECRET-DATA
            }
        }
    }
    services {
        telnet;
    }
}
chassis {
    no-source-route;
}
interfaces {
    at-0/0/1 {
        description "To ATM Backbone";
        atm-options {
            vpi 1 {
                maximum-vcs 1023;
            }
        }
        unit 2 {
            encapsulation atm-snap;
            vci 1.134;
            family inet {
                address 192.168.34.3/24;
            }
            family iso;
            family mpls;
        }
    }
    vt-0/3/0 {
        unit 200 {
            family inet;
            family mpls;
        }
        unit 300 {
            family inet;
            family mpls;
        }

    }
    lo0 {
        unit 0 {
            family inet {
                address 192.168.30.1/32;
            }
            family iso {
                address 47.0001.0000.0000.3333.00;
            }
        }
        unit 200 {
            description "For vpn_a ";
            family inet {
                address 10.10.0.1/32;
            }
        }
        unit 300 {
            description "For vpn_b ";
            family inet {
                address 10.10.1.1/32;
            }
        }

    }
}
routing-options {
    router-id 192.168.30.1;
    autonomous-system 65888;
}
protocols {

    mpls {
        interface at-0/0/1.2;
    }
    bgp {
        local-address 192.168.30.1;
        group rr-client {
            type internal;
            local-address 192.168.30.1;
            family inet-vpn {
                any;
            }
            cluster 192.168.30.1;
            neighbor 192.168.10.1;
            neighbor 192.168.20.1;
            neighbor 192.168.40.1;
            neighbor 192.168.50.1;
            neighbor 192.168.60.1;
        }
    }
    isis {
        level 2 wide-metrics-only;
        interface at-0/0/1.2;
        interface lo0.0;
    }
    ldp {
        interface at-0/0/1.2;
        interface lo0.0;
    }
}
policy-options {
    policy-statement vpn_a-import {
        term a {
            from community [ vpn_a vpn_a-im ];
            then accept;
        }
        term b {
            then reject;
        }
    }
    policy-statement vpn_a-export {
        term a {
            from protocol direct;
            then {
                community add vpn_a;
                accept;
            }
        }
        term b {
            then reject;
        }
    }
    policy-statement vpn_b-import {
        term a {
            from community [ vpn_b-province-to-city vpn_b-r4-site1 vpn_a ];
            then accept;
        }
        term b {
            then reject;
        }
    }
    policy-statement vpn_b-export {
        term a {
            from protocol direct;
            then {
                community add vpn_b-site1-to-province;
                community add vpn_a-im;
                accept;
            }
        }
        term b {
            then reject;
        }
    }
    community vpn_a members target:111:1;
    community vpn_a-im members target:111:2;
    community vpn_b members target:111:2;
    community vpn_b-province-to-city members target:222:1;
    community vpn_b-r4-site1 members target:222:304;
    community vpn_b-site1-to-province members target:222:3;
}
routing-instances {

    vpn_a {
        description "For vpn_a";
        instance-type vrf;
        interface lo0.200;
        interface vt-0/3/0.200;
        route-distinguisher 2:1;
        vrf-import vpn_a-import;
        vrf-export vpn_a-export;
        routing-options {
            auto-export;
        }
    }
    vpn_b {
        description "For vpn_b";
        instance-type vrf;
        interface lo0.300;
        interface vt-0/3/0.300;
        route-distinguisher 3:3;
        vrf-import vpn_b-import;
        vrf-export vpn_b-export;
        routing-options {
            auto-export;
        }
    }
}