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3Com Switch 8800 Configuration Guide Chapter 37 BGP/MPLS VPN Configuration
37-55
[PE2-bgp-af-vpn-instance] peer 172.22.22.2 group 17222 as-number 65002
[PE2-bgp-af-vpn] quit
[PE2-bgp] quit
Bind the interface connecting PE2 and CE1 to VPN-instance 2.1 and the interface
connecting PE2 and CE2 to VPN-instance 2.2.
[PE2] vlan 212
[PE2-vlan212] port gigabitethernet 2/1/2
[PE2-vlan212] quit
[PE2] interface Vlan-interface 212
[PE2-Vlan-interface212] ip binding vpn-instance vpn-instance2.1
[PE2-Vlan-interface212] ip address 172.12.12.1 255.255.255.0
[PE2-Vlan-interface212] quit
[PE2] vlan 211
[PE2-vlan211] port gigabitethernet 2/1/1
[PE2-vlan211] quit
[PE2] interface Vlan-interface 211
[PE2-Vlan-interface211] ip binding vpn-instance vpn-instance2.2
[PE2-Vlan-interface211] ip address 172.22.22.1 255.255.255.0
[PE2-Vlan-interface211] quit
3) Configure PE3
Note:
Only the VPN-instance configuration of PE3 is detailed here, other configurations are
similar to that of the PE1 and PE2, and are omitted here.
Create two VPN-instances 3.1 and 3.2 respectively for CE3 and CE4 on PE3, configure
different VPN-targets for them.
[PE3] ip vpn-instance vpn-instance3.1
[PE3-vpn-vpn-instance3.1] route-distinguisher 1.1.1.1:1
[PE3-vpn-vpn-instance3.1] vpn-target 1.1.1.1:1
[PE3-vpn-vpn-instance3.1] quit
[PE3] ip vpn-instance vpn-instance3.2
[PE3-vpn-instance] route-distinguisher 2.2.2.2:2
[PE3-vpn-instance] vpn-target 2.2.2.2:2
[PE3-vpn-instance] quit
Set up MP-EBGP adjacency between PE3 and CE3, import intra-CE3 VPN routes
learned into VPN-instance3.1.
[PE3] bgp 100
[PE3-bgp] ipv4-family vpn-instance vpn-instance3.1