Mpls L2Vpn Basic Function Configuration; Mpls L2Vpn Overview - Zte ZXR10 5900E series Configuration Manual

Chapter 2
MPLS L2VPN Configuration
Table of Contents

MPLS L2VPN Basic Function Configuration ...............................................................2-1

VPLS Basic Function Configuration............................................................................2-7
VPWS Basic Function Configuration ........................................................................2-20
2.1 MPLS L2VPN Basic Function Configuration

2.1.1 MPLS L2VPN Overview

Introduction to MPLS L2VPN
In the past, enterprise VPN network usually rent a data link (Frame Delay (FR) or
Asynchronous Transfer Mode (ATM)) to form L2 VPN. Internet Service Provider (ISP)
only need to ensure the connectivity in data link layer, while user can control the route
and select L3 protocol flexibility. Moreover, the security of user VPN is relatively superior
under such a condition. However, for an ISP, the conventional Internet traffic is completely
separated from VPN traffic in FR or ATM network. Additional, there is a problem of
full-mesh connection in conventional L2 VPN. Therefore, this traditional superposition L2
VPN brings heavy load to network maintenance and management.
People generally think MPLS network is the development direction of the next generation
core network. The obvious advantage of MPLS network is that it supports VPN service
well. Adopting MPLS network to provide L2 VPN, ISP only needs to maintain and manage
the single network infrastructure, but it can provide both of L2 and L3 VPN services and
various flexible IP services. The configuration of VPN service is more automatic.
There are two kinds of L2VPN services,
l
Virtual Private Wire Service (VPWS)
The communication between every two sites in VPN is realized by point to point
connection.
between user and network provider is not changed but the service is encrypted and
transmitted over IP backbone network.
l
Virtual Private LAN Service (VPLS)
To connect all the user LANs and provide L2 switch service, it emulates operator
network to a LAN switch or bridge. The difference between VPLS and VPWS is that
VPWS provides point to point service only while VPLS provides point to multi-points
SJ-20150114102049-016|2015-03-10 (R1.0)
VPWS is mainly adopted by ATM and FR users.
2-1
The connection
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