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3Com Switch 8800 Configuration Guide Chapter 37 BGP/MPLS VPN Configuration
37-32
[P-ospf-1] import-route direct
4) Configure PE3
Note:
The configuration on PE3 is similar to that on PE1, you should pay more attention to
VPN routing attribute setting on PE3 to get information about how to control
advertisement of a same VPN routing information (with same VPN-target) over MPLS
network.
Create VPN-instance for VPN-A on PE3, configure correlative attributes to control
advertisement of VPN routing information.
[PE3] ip vpn-instance vpna
[PE3-vpn-vpna] route-distinguisher 100:3
[PE3-vpn-vpna] vpn-target 111:1 both
[PE3-vpn-vpna] 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 vpna
[PE3-bgp-af-vpn-instance] import-route direct
[PE3-bgp-af-vpn-instance] group 168 external
[PE3-bgp-af-vpn-instance] peer 168.3.1.1 group 168 as-number 65430
[PE3-bgp-af-vpn-instance] quit
[PE3-bgp] quit
Bind the interface connecting PE3 and CE3 to VPN-A.
[PE3] vlan 202
[PE3-vlan202] port gigabitethernet 2/1/2
[PE3-vlan202] quit
[PE3] interface Vlan-interface 202
[PE3-Vlan-interface202] ip binding vpn-instance vpna
[PE3-Vlan-interface202] ip address 168.3.1.2 255.255.0.0
[PE3-Vlan-interface202] quit
Configure loopback interface
[PE3] interface loopback0
[PE3-LoopBack 0] ip address 202.100.1.3 255.255.255.255
[PE3-LoopBack 0] quit
Configure MPLS basic capacity and enable MPLS and LDP on VLAN interface
connecting PE3 and P. Creates LSP and achieve MPLS packet forwarding.