R3303-HP HSR6800 Routers MPLS Configuration Guide

270
tags carried. In this way, PE 1 determines the VPN that a received packet belongs to according to the
VLAN tag of the packet and sends the packet through the corresponding tunnel.
You can configure static routes, RIP, OSPF, IS-IS, EBGP, or IBGP between MCE and VPN site and between
MCE and PE.
NOTE:
To implement dynamic IP assi
g
nment for DHCP clients in private networks, you can confi
g
ure DHCP server
or DHCP relay agent on the MCE. The IP address spaces for different private networks cannot overlap.
MPLS L3VPN configuration task list
Task Remarks
Configuring basic MPLS L3VPN
By configuring basic MPLS L3VPN, you can construct
simple VPN networks over an MPLS backbone.
To deploy special MPLS L3VPN networks, such as
inter-AS VPN, nested VPN, and multi-role host, you
must also perform some specific configurations in
addition to the basic MPLS L3VPN configuration. For
more information, see the related sections.
Configuring inter-AS VPN
Configuring nested VPN
Configuring multi-role host
Configuring HoVPN
Configuring an OSPF sham link
Configuring routing on an MCE
Specifying the VPN label processing mode
Configuring BGP AS number substitution and SoO
Configuring MPLS L3VPN FRR
Configuring basic MPLS L3VPN
The key task in MPLS L3VPN configuration is to manage the advertisement of VPN routes on the MPLS
backbone, including PE-CE route exchange and PE-PE route exchange.
To configure basic MPLS L3VPN:
Task Remarks
Configuring VPN instances
Creating a VPN instance Required.
Associating a VPN instance with an
interface
Required.
Configuring route related attributes
for a VPN instance
Optional.
Configuring a tunneling policy for a
VPN instance
Optional.
Configuring an LDP instance Optional.
Configuring routing between a PE and a CE Required.