3Com Switch 8800 Configuration Guide Chapter 37 BGP/MPLS VPN Configuration37-834) On each Customer PE, configure the sub-VPN that accesses the network throughthe Customer PE.Configure cust_pe1[cust_pe1] ip vpn-instance vpn1[cust_pe1-vpn-instance] route-distinguisher 1:1[cust_pe1-vpn-instance] vpn-target 1:1[cust_pe1-vpn-instance] quit[cust_pe1] interface pos 2/1/0[cust_pe1-Pos2/1/0] ip binding vpn-instance vpn1[cust_pe1-Pos2/1/0] link-protocol ppp[cust_pe1-Pos2/1/0] ip address 15.1.1.2 255.0.0.0[cust_pe1-Pos2/1/0] quit[cust_pe1] bgp 600[cust_pe1-bgp] undo peer ebgp enable[cust_pe1-bgp] ipv4-family vpn-instance vpn1[cust_pe1-bgp-af-vpn-instance] group cegroup external[cust_pe1-bgp-af-vpn-instance] peer 15.1.1.1 group cegroup as-number 50001[cust_pe1-bgp-af-vpn-instance] quit[cust_pe1-bgp] quitConfigure cust_pe2[cust_pe2] ip vpn-instance vpn1[cust_pe2-vpn-instance] route-distinguisher 1:1[cust_pe2-vpn-instance] vpn-target 1:1[cust_pe2] interface pos 2/1/0[cust_pe2-Pos2/1/0] ip binding vpn-instance vpn1[cust_pe2-Pos2/1/0] link-protocol ppp[cust_pe2-Pos2/1/0] ip address 16.1.1.2 255.0.0.0[cust_pe2-Pos2/1/0] quit[cust_pe2] bgp 500[cust_pe2-bgp] undo peer ebgp enable[cust_pe2-bgp] ipv4-family vpn-instance vpn1[cust_pe2-bgp-af-vpn-instance] group cegroup external[cust_pe2-bgp-af-vpn-instance] peer 16.1.1.1 group cegroup as-number 50002[cust_pe2-bgp-af-vpn-instance] quit[cust_pe2-bgp] quit37.4.11 OSPF Multi-instance CE Configuration ExampleI. Network requirementsCE router in a VPN achieves service isolation by configuring multiple VPN instances.
