Chapter 3 Vpls Configuration; Vpls Overview; Introduction To Vpls - H3C S9500 Series Operation Manual

Operation Manual – NAT-URPF-VPLS
H3C S9500 Series Routing Switches

Chapter 3 VPLS Configuration

Note:
The service processor card mentioned in this chapter refers to the LSBM1VPNB card.

3.1 VPLS Overview

3.1.1 Introduction to VPLS

Today, IP networks have spread throughout the world. And the operators are focusing
on using their existing IP networks to provide enterprises with low-cost private networks.
Now, an easy-implemented technique called MPLS VPN (multiprotocol label switching
VPN) emerges as the times require, which enables the operators to provide
arbitrary-rate MPLS-based virtual private network (VPN) services over IP networks.
MPLS VPN services fall into two types: L3 MPLS VPN and L2 MPLS VPN. The latter
includes VPLS (virtual private LAN service) and VLL (virtual leased line). VLL only
applies to point-to-point networking, while VPLS can apply to multipoint-to-multipoint
VPN networking. VPLS provides the operators using point-to-point L2VPN with a better
solution. In addition, unlike L3VPN, VPLS does not participate in user's internal routing.
Now, operators need only manage and operate a single network to provide multiple
kinds of services such as best-effort, L3VPN, L2VPN, traffic-engineering, and
distinguished services. This greatly reduces their costs on network construction,
operation and maintenance.
With VPLS, users in different areas can be connected with each other through
MAN/WAN just like they are in one LAN. S9500 series provide a VPLS solution. This
solution uses MPLS-based virtual links as the links of Ethernet bridges and provides
transparent transmission LAN services (TLS) over MPLS networks.
The following table lists the acronyms referred in this document:
Table 3-1 Acronyms
AC
CE
FEC
FR
Acronym
3-1
Chapter 3 VPLS Configuration
Full name
Attachment circuit
Custom edge
Forwarding equivalence class
Frame Relay