3Com 8800 Configuration Manual page 473

3Com Switch 8800 Configuration Guide Chapter 37 BGP/MPLS VPN Configuration
Note:
The configuration on the other three CE switches (CE2 to CE4) is similar to that on CE1,
the details are omitted here.
2) Configure PE1
Configure vpn-instance for VPN-A on PE1, as well as other associated attributes to
control advertisement of VPN routing information.
[PE1] ip vpn-instance vpna
[PE1-vpn-vpna] route-distinguisher 100:1
[PE1-vpn-vpna] vpn-target 111:1 both
[PE1-vpn-vpna] quit
Configure PE1 and CE1 as MP-EBGP neighbors, import CE1 VPN routes learned into
MBGP VPN-instance address family.
[PE1] bgp 100
[PE1-bgp] ipv4-family vpn-instance vpna
[PE1-bgp-af-vpn-instance] import-route direct
[PE1-bgp-af-vpn-instance] group 168 external
[PE1-bgp-af-vpn-instance] peer 168.1.1.1 group 168 as-number 65410
[PE1-bgp-af- vpn-instance] quit
[PE1-bgp] quit
Bind the VLAN interface connecting PE1 and CE1 to the VPN-A. Note that you should
first configure association between the VLAN interface and VPN-instance, and then
configure the IP address of the VLAN interface.
[PE1] vlan 202
[PE1-vlan202] port gigabitethernet 2/1/2
[PE1-vlan202] quit
[PE1] interface Vlan-interface 202
[PE1-Vlan-interface202] ip binding vpn-instance vpna
[PE1-Vlan-interface202] ip address 168.1.1.2 255.255.0.0
[PE1-Vlan-interface202] quit
Configure loopback interface. (For PE, the IP address for loopback interface must be a
host address with 32-bit mask, to prevent the route is aggregated and then LSP cannot
process correctly interior-layer labels.)
[PE1] interface loopback0
[PE1-LoopBack 0] ip address 202.100.1.1 255.255.255.255
[PE1-LoopBack 0] quit
Configure MPLS basic capacity and enable MPLS and LDP on VLAN interface
connecting PE1 and P. Create LSP and achieve MPLS packet forwarding.
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