R3303-HP HSR6800 Routers MPLS Configuration Guide

271
Task Remarks
Configuring routing between PEs Required.
Configuring routing features for BGP VPNv4 subaddress family Optional.
Configuration prerequisites
Before you configure basic MPLS L3VPN, complete the following tasks:
• Configure an IGP for the MPLS backbone (on the PEs and Ps) to achieve IP connectivity.
• Configure basic MPLS for the MPLS backbone.
• Configure MPLS LDP for the MPLS backbone so that LDP LSPs can be established.
Configuring VPN instances
VPN instances isolate not only VPN routes from public network routes, but also routes among VPNs. This
feature allows VPN instances to be used in network scenarios besides MPLS L3VPNs.
All VPN instance configurations are performed on PEs or MCEs.
Creating a VPN instance
A VPN instance is associated with a site. It is a collection of the VPN membership and routing rules of its
associated site. A VPN instance does not necessarily correspond to one VPN.
The maximum number of VPN instances that can be configured on a PE varies by device.
To create and configure a VPN instance:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Create a VPN instance and
enter VPN instance view.
ip vpn-instance vpn-instance-name
N/A
3. Configure an RD for the VPN
instance.
route-distinguisher
route-distinguisher
A VPN instance takes effect only
after you configure an RD for it.
Before configuring an RD, you
cannot configure any other
parameters for the VPN instance
except a reserved VLAN and a
description.
4. Configure a description for
the VPN instance.
description text
Optional.
The description should contain the
VPN instance's related
information, such as its relationship
with a certain VPN.
Associating a VPN instance with an interface
After creating and configuring a VPN instance, associate the VPN instance with the interface connected
to the CE. Any LDP-capable interface can be associated with a VPN instance. For information about
LDP-capable interfaces, see "Configuring basic MPLS."