Configuring Inter-Provider Vpn; Configuration Prerequisites; Configuring Inter-Provider Vpn Option A; Configuring Inter-Provider Vpn Option B - 3Com MSR 50 Series Configuration Manual

Configuring
Inter-Provider VPN
Configuration
Prerequisites
Configuring
Inter-Provider VPN
Option A
Configuring
Inter-Provider VPN
Option B
To do...
Apply a routing policy to a
peer or peer group
n
For information about BGP routing, refer to
If the MPLS backbone on which the VPN routes rely spans multiple ASs, you need
to configure inter-provider VPN.
There are three inter-provider VPN solutions. You can choose them as required.
Before configuring inter-provider VPN, complete these tasks:
Configuring IGP for the MPLS backbones in each AS to implement IP
■
connectivity of the backbones in the AS
Configuring basic MPLS capabilities for the MPLS backbones of each AS
■
Configuring MPLS LDP for the MPLS backbones so that LDP LSPs can be
■
established
Configuring basic MPLS L3VPN for each AS
■
n
When configuring basic MPLS L3VPN for each AS, specific configurations may be
required on PEs or ASBR-PEs. This depends on the inter-provider VPN solution
selected.
Inter-provider VPN option A applies to scenarios where the number of VPNs and
that of VPN routes on the PEs are relatively small. It is simple to implement.
To configure inter-provider VPN option A, you only need to:
Configure basic MPLS L3VPN on each AS.
■
Configure each ASBR, taking the peer ASBR PE as its CE.
■
In other words, configure VPN instances for PEs and ASBR PEs respectively. The
VPN instance for PE is used to allow CEs to access the network, while that for
ASBR-PE is used to access its peer ASBR-PE.
Refer to "Configuring Basic MPLS L3VPN" on page
n
In the inter-provider VPN option A solution, for the same VPN, the VPN targets for
the VPN instances of the PEs must match those for the VPN instances of the
ASBR-PEs in the same AS. It is not required for PEs in different ASs.
Follow these steps to configure inter-provider VPN option B on ASBR PEs:
To do...
Enter system view

Configuring Inter-Provider VPN

Use the command...
peer { group-name |
ip-address } route-policy
route-policy-name { export |
import }
"BGP Configuration" on page
Use the command...
system-view
Remarks
Optional
By default, no routing policy is
applied to a peer or peer
group.
1484.
Remarks
-
1491
825.