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3Com Switch 8800 Configuration Guide Chapter 37 BGP/MPLS VPN Configuration
37-54
[PE1-bgp] peer 3.3.3.3 group 3
[PE1-bgp] peer 3.3.3.3 connect-interface loopback 0
[PE1-bgp] ipv4-family vpnv4
[PE1-bgp-af-vpn] peer 2 enable
[PE1-bgp-af-vpn] peer 2.2.2.2 group 2
[PE1-bgp-af-vpn] peer 3 enable
[PE1-bgp-af-vpn] peer 3.3.3.3 group 3
[PE1-bgp-af-vpn] quit
2) Configure PE2
Note:
The configuration of PE2 is similar to that of PE1, so only VPN-instance configuration is
detailed here.
Create two VPN-instances 2.1 and 2.2 respectively for CE1 and CE2 on PE2, configure
different VPN-targets for them.
[PE2] ip vpn-instance vpn-instance2.1
[PE2-vpn-vpn-instance2.1] route-distinguisher 1.1.1.1:1
[PE2-vpn-vpn-instance2.1] vpn-target 1.1.1.1:1
[PE2-vpn-vpn-instance2.1] quit
[PE2] ip vpn-instance vpn-instance2.2
[PE2-vpn-vpn-instance2.2] route-distinguisher 2.2.2.2:2
[PE2-vpn-vpn-instance2.2] vpn-target 2.2.2.2:2
[PE2-vpn-vpn-instance2.2] quit
Set up MP-EBGP adjacency between PE2 and CE1, import intra-CE1 VPN routes
learned into VPN-instance2.1.
[PE2] bgp 100
[PE2-bgp] ipv4-family vpn-instance vpn-instance2.1
[PE2-bgp-af-vpn-instance] import-route direct
[PE2-bgp-af-vpn-instance] import-route static
[PE2-bgp-af-vpn-instance] group 17212 external
[PE2-bgp-af-vpn-instance] peer 172.12.12.2 group 17212 as-number 65001
[PE2-bgp-af-vpn] quit
Set up MP-EBGP adjacency between PE2 and CE2, import intra-CE2 VPN routes
learned into VPN-instance2.2.
[PE2-bgp] ipv4-family vpn-instance vpn-instance2.2
[PE2-bgp-af-vpn-instance] import-route direct
[PE2-bgp-af-vpn-instance] import-route static
[PE2-bgp-af-vpn-instance] group 17222 external