H3C Technologies H3C S7500E Series Switches - Manual (Page 313)

6-88
[CE1] bgp 200
[CE1-bgp] ipv4-family vpnv4
[CE1-bgp-af-vpnv4] peer 11.1.1.2 enable
# Specify to allow the local AS number to appear in the AS-PATH attribute of the routes received.
[CE1-bgp-af-vpnv4] peer 11.1.1.2 allow-as-loop 2
# Specify to receive all VPNv4 routes.
[CE1-bgp-af-vpnv4] undo policy vpn-target
[CE1-bgp-af-vpnv4] quit
[CE1-bgp] quit
Configurations on PE 2 and CE 2 are similar to those on PE 1 and CE 1 respectively, and are thus
omitted here.
6) Establish MP-IBGP peer relationship between sub-VPN PEs and CEs of the customer VPN to
exchange VPNv4 routes of sub-VPNs.
# Configure PE 3.
[PE3] bgp 200
[PE3-bgp] peer 2.2.2.9 as-number 200
[PE3-bgp] peer 2.2.2.9 connect-interface loopback 0
[PE3-bgp] ipv4-family vpnv4
[PE3-bgp-af-vpnv4] peer 2.2.2.9 enable
# Specify to allow the local AS number to appear in the AS-PATH attribute of the routes received.
[PE3-bgp-af-vpnv4] peer 2.2.2.9 allow-as-loop 2
[PE3-bgp-af-vpnv4] quit
[PE3-bgp] quit
# Configure CE 1.
[CE1] bgp 200
[CE1-bgp] peer 1.1.1.9 as-number 200
[CE1-bgp] peer 1.1.1.9 connect-interface loopback 0
[CE1-bgp] ipv4-family vpnv4
[CE1-bgp-af-vpnv4] peer 1.1.1.9 enable
[CE1-bgp-af-vpnv4] undo policy vpn-target
[CE1-bgp-af-vpnv4] quit
[CE1-bgp] quit
Configurations on PE 4 and CE 2 are similar to those on PE 3 and CE 1 respectively, and are thus
omitted here.
7) Verify the configurations.