3Com Switch 8800 Family Configuration Guide

Typical BGP/MPLS VPN Configuration Example 583
[UPE] ip vpn-instance vpn1
[UPE-vpn-vpn1] route-distinguisher 100:1
[UPE-vpn-vpn1] vpn-target 100:1 both
# Configure interfaces
[UPE] vlan 301
[UPE-vlan301] port gigabitethernet 2/2/1
[UPE-vlan301] quit
[UPE] interface Vlan-interface 301
[UPE-Vlan-interface301] mpls
[UPE-Vlan-interface301] mpls ldp enable
[UE1-Vlan-interface301] mpls ldp transport-ip interface
[UPE-Vlan-interface301] ip address 10.0.0.2 255.0.0.0
[UPE-Vlan-interface301] quit
[UPE] interface loopback0
[UPE-LoopBack 0] ip address 1.0.0.1 255.255.255.255
# Configure BGP
[UPE] bgp 100
[UPE-bgp] group 1 internal
[UPE-bgp] peer 1.0.0.2 group 1
[UPE-bgp] ipv4-family vpn-instance vpn1
[UPE--bgp-af-vpn-instance] import direct
[UPE-bgp] ipv4-family vpnv4
[UPE-bgp-af-vpn] peer 1 enable
[UPE-bgp-af-vpn] peer 1.0.0.2 group 1
# Configure OSPF
[UPE] ospf
[UPE-ospf-1] import-route direct
[UPE-ospf-1] area 0
[UPE-ospf-1-area-0.0.0.0] network 1.0.0.1 0.0.0.0
[UPE-ospf-1-area-0.0.0.0] network 10.0.0.2 0.255.255.255
[UPE-ospf-1-area-0.0.0.0] quit
OSPF Multi-instance
Sham-link Configuration
Example
Network requirements
As shown in the following picture, a company connects to a WAN through OSPF
multi-instance function of 3Com router. OSPF is bind to VPN1.MPLS VPN
backbone runs between PEs and OSPF runs between PE and CE. Configure a
Sham-link between PE1 and PE2 to ensure the traffic between CE1 and CE2 does
not pass the Backdoor link that directly connects CE1 and CE2.