3Com 3C13636 Configuration Manual page 893

3Com Router 3000 Ethernet Family
Configuration Guide
Table 3-27 Configure static route
Operation
Configure a private
static route
Remove the static
route
VIII. Configuring Multi-AS BGP/MPLS VPN
Do following configuration to achieve the Multi-AS BGP/MPLS VPN after the
configuration of the routing switch between PEs.
1) Configuring VPN-Target Filtering
By default, PE performs VPN-Target filtering for the received VPNv4 routes. The routes
passing the filtering are added into the routing table, while the rest are discarded.
If PE acts as an ASBR, it needs to collect all the VPNv4 routing information and
advertise it to other ASBRs. In this case, PE accepts all the VPNv4 routing information
from its peers without filtering based on VPN-target.
Perform the following configuration in BGP-VPNv4 sub-address family view.
Table 3-28 Configure VPN-Target filtering
Enable VPN-Target filtering for the
VPNv4 routing information
Disable VPN-Target filtering for the
VPNv4 routing information
The undo policy vpn-target command is only applied to ABSR PEs in multi-AS VPN
Option B.
2) Configuring Label Processing on Public Network Routes
In the Multihop MP-EBGP multi-AS VPN solution, you need to establish a multi-AS
VPN LSP. PEs and ASBRs exchange public network routes through carried MPLS label
information.
Through the route-policy, MPLS labels are assigned to those public network routes that
match certain conditions. Other routes are still common IPv4 routes.
ip route-static
vpn-instance-name2 ... ip-address { mask | mask-length }
{ interface-type
vpn-nexthop-name vpn-nexthop-address ] } [ preference
preference-value ] [ reject | blackhole ]
undo ip route-static vpn-instance vpn-instance-name1
vpn-instance-name2 ... ip-address { mask | mask-length }
{ interface-type
vpn-nexthop-name vpn-nexthop-address ] } [ preference
preference-value ] [ reject | blackhole ]
Operation
3Com Corporation
3-31
Chapter 3 BGP/MPLS VPN Configuration
Command
vpn-instance vpn-instance-name1
interface-number |
interface-number
Command
policy vpn-target
undo policy vpn-target
[ vpn-instance
[ vpn-instance