3Com 3C13636 Configuration Manual page 901

3Com Router 3000 Ethernet Family
Configuration Guide
[P-ospf-area-0.0.0.0] network 172.3.1.0 0.0.255.255
[P-ospf-area-0.0.0.0] network 172.4.1.0 0.0.255.255
[P-ospf-area-0.0.0.0] quit
[P-ospf] 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 EBGP adjacency between PE3 and CE3, redistribute intra-CE3 VPN routes
learned to MBGP VPN-instance address family.
[PE3] bgp 100
[PE3-bgp] ipv4-family vpn-instance vpna
[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] import-route direct
[PE3-bgp-af-instance] quit
# Bind the interface Ethernet1/0/0 connecting PE3 and CE3 to VPN-A.
[PE3] interface ethernet 1/0/0
[PE3-Ethernet1/0/0] ip binding vpn-instance vpna
[PE3-Ethernet1/0/0] ip address 168.3.1.2 255.255.0.0
[PE3-Ethernet1/0/0] 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, enable LDP on the interface connecting PE3 and P,
and create LSP to achieve MPLS packet forwarding.
[PE3] mpls lsr-id 172.3.1.1
Chapter 3 BGP/MPLS VPN Configuration
3Com Corporation
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