3Com Switch 8800 Family Configuration Guide

550 CHAPTER 49: BGP/MPLS VPN CONFIGURATION
This command adds a default route which uses local address as the next hop on
the PE SPE (system processing engine)
Perform the following configuration in VPNv4 sub-address family view.
Step 6: Configure BGP neighbor as the User-end PE (UPE) of BGP/MPLS VPN
This command is only used for UPE of BGP/MPLS VPN.
Configure the following commands in the VPNv4 sub-address family view.
Configuring P Router P router does not maintain VPN routes, but do keep connection with public
network and coordinate with PE in creating LSPs. These configurations are
required on P router:
Step 1: Configure MPLS basic capacity and enable LDP on the interfaces
connecting P router to PE router, for forwarding MPLS packets. See
“MPLS Basic
Capability Configuration”.
Step 2: Enable OSPF protocol at the interfaces connecting P router to PE router
and import direct-connect routes. See "OSPF" part in "Routing Protocol" for
details.
Displaying and
Debugging BGP/MPLS
VPN
Displaying VPN address information from BGP table
After the above configuration, execute display command in any view to display
the running of the VPNv4 information in BGP database configuration, and to verify
the effect of the configuration.
Tabl e 551 Advertise default route to the peer (group)
Operation Command
Advertise default route to the peer (group)
peer ip-address default-route-advertise
vpn-instance vpn-instance name
Remove to advertise default route to the peer
(group)
undo peer ip-address
default-route-advertise vpn-instance
vpn-instance name
Tabl e 552 Configure BGP neighbor as the UPE of BGP/MPLS VPN
Operation Command
Configure BGP neighbor as the UPE of BGP/MPLS VPN peer peer-address upe
Disable the configuration undo peer peer-address upe
Tabl e 553 Display VPN address information from BGP table
Operation Command
Display VPN address
information from BGP table
display bgp vpnv4 { all | route-distinguisher rd-value |
vpn-instance vpn-instance-name } { group | network | peer |
routing-table }