Configuring P Router; Bgp/Mpls Vpn Display And Debug - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
Table 3-31 Configure invariable next hop when advertising routes
Configure invariable next hop when
advertising routes to EBGP peers
Restore the default configuration
By default, the next hop changes to BGP Speaker when sending routes to EBGP peers.

3.2.3 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 2 "MPLS Basic
Capability Configuration" for details.
Step 2: Enable OSPF on the interfaces that connect P router to PE router and
redistribute directly connected routes. See Routing Protocol for details.

3.3 BGP/MPLS VPN Display and Debug

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 3-32 Display VPN address information from BGP table
Operation
Display
address
information
from
table
II. Displaying IP routing table associated with vpn-instance
After the above configuration, you can execute display command in any view to
display the corresponding information in the IP routing tables related to vpn-instance,
and to verify the effect of the configuration.
Operation
display bgp vpnv4 { all | route-distinguisher rd-value |
vpn-instance vpn-instance-name } { group [ group-name ] |
VPN
network | peer [ ip-address1 | verbose ] | routing [ ip-address2 |
statistic ] [ label ] [ as-path-acl as-path-acl | cidr | community
[ community-number
BGP
no-export-subconfed | whole-match ] | community-list
community-list [ whole-match ] | different-origin-as | peer
ip-address1 [ advertised | received ] | regular-expression text ] }
3Com Corporation
Chapter 3 BGP/MPLS VPN Configuration
peer group-name next-hop-invariable
undo
next-hop-invariable
Command
| no-advertise
3-33
Command
peer group-name
| no-export |