570 CHAPTER 49: BGP/MPLS VPN CONFIGURATION
[PE3-bgp-af-vpn-instance] import-route direct
[PE3-bgp-af-vpn-instance] import-route static
[PE3-bgp-af-vpn-instance] group 192 external
[PE3-bgp-af-vpn-instance] peer 192.168.13.2 group 192 as-number 65003
[PE3-bgp-af-vpn-instance] quit
[PE3-bgp] quit
# Set up EBGP adjacency between PE3 and CE4 in VPN-instance3.2, import
intra-CE4 VPN routes learned into VPN-instance3.2.
[PE3-bgp] ipv4-family vpn-instance vpn-instance3.2
[PE3-bgp-af-vpn-instance] import-route direct
[PE3-bgp-af-vpn-instance] import-route static
[PE3-bgp-af-vpn-instance] group 232 external
[PE3-bgp-af-vpn-instance] peer 192.168.23.2 group 232 as-number 65004
[PE3-bgp-af-vpn-instance] quit
[PE3-bgp] quit
# Bind the interface connecting PE3 and CE3 to VPN-instance3.1 and the interface
connecting PE3 and CE4 to VPN-instance 3.2.
[PE3] vlan 311
[PE3-vlan311] port gigabitethernet 3/1/1
[PE3-vlan311] quit
[PE3] interface Vlan-interface 311
[PE3-Vlan-interface311] ip binding vpn-instance vpn-instance3.1
[PE3-Vlan-interface311] ip address 192.168.13.1 255.255.255.0
[PE3-Vlan-interface311] quit
[PE3] vlan 314
[PE3-vlan314] port gigabitethernet 3/1/4
[PE3-vlan314] quit
[PE3] interface Vlan-interface 314
[PE3-Vlan-interface314] ip binding vpn-instance vpn-instance3.2
[PE3-Vlan-interface314] ip address 192.168.23.1 255.255.255.0
[PE3-Vlan-interface314] quit
Cross-domain BGP/MPLS
VPN Configuration
Example
Network requirements
A VPN subscriber has sites in both city A and B. Because of the geographical
reason, site in City A accesses to the MPLS/VPN network of service provider in City
A, and gets AS100 as the AS number; site in City B accesses to the MPLS/VPN
network of service provider in City B, and gets AS200 as the AS number. The VPN
goes through two ASs. CE1 and CE2 belong to VPN-A, while CE3 and CE4 belong
to VPN-B.
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