Chapter 1 Mpls L3Vpn Configuration; Mpls L3Vpn Overview - H3C S9500 Series Operation Manual

Operation Manual – MPLS L3VPN
H3C S9500 Series Routing Switches

Chapter 1 MPLS L3VPN Configuration

When configuring MPLS L3VPN, go to these sections for information you are interested
in:

MPLS L3VPN Overview

MPLS L3VPN Configuration
Displaying and Debugging MPLS L3VPN
Typical MPLS L3VPN Configuration Examples
Troubleshooting MPLS L3VPN Configuration
1.1 MPLS L3VPN Overview
Traditional VPN, for which Layer 2 tunneling protocols (L2TP, L2F and PPTP, and so
on.) or Layer 3 tunnel technology (IPSec, GRE and so on.) is adopted, is a great
success and is therefore widely used. However, along with the increase of the size of
VPNs, the deficiency of traditional VPN in such aspects as expansibility and
manageability becomes more and more obvious. In addition, QoS (Quality of Service)
and security are also the difficult problem for traditional VPN.
Using the MPLS technology, service providers can implement the IP-based VPN
services easily and enable their networks to meet the expansibility and manageability
requirement for VPN. The VPN constructed by using MPLS also provides the possibility
for the implementation of value-added service. Multiple VPNs can be formed from a
single access point, and each VPN represents a different service, making the network
able to transmit services of different types in a flexible way.
The H3C S9500 series routing switches provide full MPLS L3VPN networking
capabilities:
Address isolation, allowing the overlap of addresses of different VPNs and public
networks.
Supporting MBGP advertising VPN routing information through public networks,
establishing MPLS L3VPN.
Forwarding VPN data stream over MPLS LSP.
Providing MPLS VPN performance monitoring and fault detecting tools.
Chapter 1 MPLS L3VPN Configuration
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