3Com Switch 8800 Configuration Guide Chapter 37 BGP/MPLS VPN Configuration
37-25
Operation Command
Remove to advertise default route
to the peer (group)
undo peer { peer-address | group-name }
default-route-advertise [ vpn-instance
vpn-instancename]
Step 7: Configure BGP neighbor as the UPE of BGP/MPLS VPN
This command is only used for UPE (user port function) of BGP/MPLS VPN.
Configuring the following commands in the VPNv4 sub-address family view.
Table 37-33 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
37.2.3 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 Chapter 36 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.
37.3 Displaying and Debugging BGP/MPLS VPN I. 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.
Table 37-34 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 }