Vpls Configuration; Vpls Overview; Operation Of Vpls - 3Com S7906E Configuration Manual

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VPLS Configuration

To support VPLS functions, configure your S7900E series Ethernet switch with EB or SD LPUs and
no card intermixing is allowd.
The S7900E Series Ethernet Switches are distributed devices supporting Intelligent Resilient
Framework (IRF). Two S7900E series can be connected together to form a distributed IRF device.
If an S7900E series is not in any IRF, it operates as a distributed device; if the S7900E series is in
an IRF, it operates as a distributed IRF device. For introduction of IRF, refer to IRF Configuration in
the System Volume.
When configuring VPLS, go to these sections for information you are interested in:

VPLS Overview

VPLS Configuration Task List
Displaying and Maintaining VPLS
VPLS Configuration Examples
Troubleshooting VPLS
VPLS Overview
Virtual Private LAN Service (VPLS), also called Transparent LAN Service (TLS) or virtual private
switched network service, can deliver a point-to-multipoint L2VPN service over public networks. With
VPLS, geographically-dispersed sites can interconnect and communicate over MAN or WAN as if they
were on the same LAN.
VPLS provides Layer 2 VPN services. However, it supports multipoint services, rather than the
point-to-point services that traditional VPN supports. With VPLS, service providers can create on the
PEs a series of virtual switches for customers, allowing customers to build their LANs across the
Metropolitan Area Network (MAN) or Wide Area Network (WAN).

Operation of VPLS

Basic VPLS concepts
CE
Customer edge device that is directly connected with the service provider network.
PE
Provider edge device that connects one or more CEs to the service provider network. A PE maps and
forwards packets between private networks and public network tunnels. A PE can be a UPE or NPE.
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