3Com 8807 Configuration Manual page 549

2 Configure MP-IBGP
Step 1: Enter protocol address family view.
Perform the following configuration in BGP view.
Table 547 Configure VPNv4 address family
Operation
Enter VPNv4 sub-address family view
Delete VPNv4 sub-address family view
configuration
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.
Table 548 Enable/disable IBGP peer group
Operation
Enable a peer group
Disable a specific peer group
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.
Table 549 Configure the local address as the next hop in route advertisement
Operation
Configure the local address as the next hop in
route advertisement
Remove the configuration
Step 4: Transfer BGP update packet without AS number (optional)
Perform the following configuration in VPNv4 sub-address family view.
Table 550 Transfer BGP update packet without AS number
Operation
Transfer BGP update packet without AS
number
Transfer BGP update packet with AS number
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)
BGP/MPLS VPN Configuration
Command
ipv4-family vpnv4 [ unicast ]
undo ipv4-family vpnv4 [ unicast ]
Command
peer group-name enable
undo peer group-name enable
Command
peer { group-name } next-hop-local
undo peer { group-name } next-hop-local
Command
peer group-name public-as-only
undo peer group-name public-as-only
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