3Com Switch 8800 Family Configuration Guide

BGP/MPLS VPN Configuration 549
2 Configure MP-IBGP
Step 1: Enter protocol address family view.
Perform the following configuration in BGP view.
Step 2: Activate the peer (group).
By default, BGP neighbor is active while MBGP neighbor is inactive. You must
enable MBGP neighbor in VPNv4 sub-address family view.
Step 3: Configure the local address as the next hop in route advertisement
(optional).
Since the default value is no configuration, you must show clearly to add in this
configuration command when configuring MBGP of PE-PE.
Perform the following configuration in VPNv4 sub-address family view.
Step 4: Transfer BGP update packet without AS number (optional)
Perform the following configuration in VPNv4 sub-address family view.
n
In the above-mentioned configuration steps, the public-as-only keyword is
required for configuring EBGP and alliance, but not for configuring IBGP.
Step 5: Advertise default route to the peer (group)
Tab le 547 Configure VPNv4 address family
Operation Command
Enter VPNv4 sub-address family view ipv4-family vpnv4 [ unicast ]
Delete VPNv4 sub-address family view
configuration
undo ipv4-family vpnv4 [ unicast ]
Tab le 548 Enable/disable IBGP peer group
Operation Command
Enable a peer group peer group-name enable
Disable a specific peer group undo peer group-name enable
Tab le 549 Configure the local address as the next hop in route advertisement
Operation Command
Configure the local address as the next hop in
route advertisement
peer { group-name } next-hop-local
Remove the configuration undo peer { group-name } next-hop-local
Tab le 550 Transfer BGP update packet without AS number
Operation Command
Transfer BGP update packet without AS
number
peer group-name public-as-only
Transfer BGP update packet with AS number undo peer group-name public-as-only