Mpls L3Vpn Overview; Introduction To Mpls L3Vpn - 3Com MSR 50 Series Configuration Manual

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MPLS L3VPN Overview

Introduction to MPLS
L3VPN
MPLS L3VPN C
When configuring MPLS L3VPN, go to these sections for information you are
interested in:
"MPLS L3VPN Overview" on page 1459
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"MPLS L3VPN Configuration Task List" on page 1480
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"Displaying and Maintaining MPLS L3VPN" on page 1499
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"MPLS L3VPN Configuration Example" on page 1501
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n
This chapter covers only introduction to and configuration of MPLS L3VPN. For
information about MPLS basics, BGP, and VPN, refer to
Configuration" on page
L2VPN Configuration" on page 1425
This section covers these topics:
"Introduction to MPLS L3VPN" on page 1459
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"MPLS L3VPN Concepts" on page 1460
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"MPLS L3VPN Packet Forwarding" on page 1463
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"MPLS L3VPN Networking Schemes" on page 1464
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"MPLS L3VPN Routing Information Advertisement" on page 1467
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"Carrier's Carrier" on page 1468
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"Multi-AS VPN" on page 1470
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"Multi-Role Host" on page 1473
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"HoVPN" on page 1473
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"OSPF VPN Extension" on page 1476
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"BGP AS Number Substitution" on page 1480
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MPLS L3VPN is a kind of PE-based L3VPN technology for service provider VPN
solutions. It uses BGP to advertise VPN routes and uses MPLS to forward VPN
packets on service provider backbones.
MPLS L3VPN provides flexible networking modes, excellent scalability, and
convenient support for MPLS QoS and MPLS TE. Hence, it is widely used.
The MPLS L3VPN model consists of three kinds of devices:
Customer edge device (CE): A CE resides on a customer network and has one
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or more interfaces directly connected with service provider networks. It can be
ONFIGURATION
1311, "BGP Configuration" on page
"MPLS Basics
825, and "MPLS