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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 assignment for DHCP clients in private networks, you can configure DHCP server
or DHCP relay agent on the MCE. The IP address spaces for different private networks cannot overlap.
MPLS L3VPN configuration task list
Complete the following tasks to configure MPLS L3VPN:
Task Remarks
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
also need to perform some specific configurations in
addition to the basic MPLS L3VPN configuration. For
more information, see the related sections.
Specifying the VPN label processing mode
Configuring BGP AS number substitution and SoO
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.
Complete the following tasks to configure basic MPLS L3VPN:
Task Remarks
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
Optional
Configuring routing between PE and CE
Required
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 ensure IP connectivity