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3Com Switch 8800 Configuration Guide Chapter 37 BGP/MPLS VPN Configuration
37-49
[PE2-LoopBack0] quit
Set up MP-IBGP adjacency between PE2 and PE1 to exchange inter-PE VPN routing
information and activate MP-IBGP peer in VPNv4 sub-address family view.
[PE2] bgp 100
[PE2] group 11
[PE2-bgp] peer 11.1.1.1 group 11 as-number 100
[PE2-bgp] peer 11.1.1.1 connect-interface loopback 0
[PE2-bgp] ipv4-family vpnv4
[PE2-bgp-af-vpn] peer 11 enable
[PE2-bgp-af-vpn] peer 11.1.1.1 allow-as-loop 1
[PE2-bgp-af-vpn] quit
[PE2-bgp] quit
3) Configure PE3
Create a VPN-instance on PE3, import VPN routing information of VPN-target 100:2
and advertise VPN routing information of VPN-target 100:12.
[PE3] ip vpn-instance vpn-instance2
[PE3-vpn-vpn-instance2] route-distinguisher 100:4
[PE3-vpn-vpn-instance2] vpn-target 100:12 export-extcommunity
[PE3-vpn-vpn-instance2] vpn-target 100:2 import-extcommunity
[PE3-vpn-vpn-instance2] quit
Set up MP-EBGP adjacency between PE3 and CE3 import intra-CE3 VPN routes
learned into MBGP VPN-instance address family.
[PE3] bgp 100
[PE3-bgp] ipv4-family vpn-instance vpn-instance2
[PE3-bgp-af-vpn-instance] import-route static
[PE3-bgp-af-vpn-instance] import-route direct
[PE3-bgp-af-vpn-instance] group 172 external
[PE3-bgp-af-vpn-instance] peer 172.18.1.1 group 172 as-number 65001
[PE3-bgp-af-vpn-instance] quit
[PE3-bgp] quit
Bind the interface of the VLAN to which the port connecting PE3 and CE3 belongs to
VPN-instance.
[PE3] vlan 201
[PE3-vlan201] port gigabitethernet 2/1/1
[PE3-vlan201] quit
[PE3] interface Vlan-interface 201
[PE3-Vlan-interface201] ip binding vpn-instance vpn-instance2
[PE3-Vlan-interface201] ip address 172.18.0.1 255.255.0.0
[PE3-Vlan-interface201] quit
Configure loopback interface