Alcatel-Lucent 6850-48 ネットワークガイド
OmniSwitch AOS Release 6 Network Configuration Guide
September 2009
page 11-1
11 Configuring VPLS
Virtual Private LAN Service (VPLS) is a class of virtual private network (VPN) service that allows the
connection of multiple sites in a single bridged domain over a provider-managed IP/MPLS network. The
customer sites in a VPLS instance appear to be on the same LAN, regardless of their location. VPLS uses
an Ethernet interface on the customer-facing (access) side which simplifies the LAN/WAN boundary and
allows for rapid and flexible service provisioning.
connection of multiple sites in a single bridged domain over a provider-managed IP/MPLS network. The
customer sites in a VPLS instance appear to be on the same LAN, regardless of their location. VPLS uses
an Ethernet interface on the customer-facing (access) side which simplifies the LAN/WAN boundary and
allows for rapid and flexible service provisioning.
VPLS enables each customer to maintain control of their own routing strategies. All customer routers in
the VPLS service are part of the same subnet. This simplifies the IP addressing plan, especially when
compared to a mesh constructed from many separate point-to-point connections. The VPLS service
management is simplified since the service is not aware of nor participates in the IP addressing and rout-
ing.
the VPLS service are part of the same subnet. This simplifies the IP addressing plan, especially when
compared to a mesh constructed from many separate point-to-point connections. The VPLS service
management is simplified since the service is not aware of nor participates in the IP addressing and rout-
ing.
A VPLS service provides connectivity between two or more Service Access Points (SAPs) on one router
(a local service) or on multiple routers (a distributed service). The connection appears to be a bridged
domain to the customer sites so protocols, including routing protocols, can traverse the VPLS service.
(a local service) or on multiple routers (a distributed service). The connection appears to be a bridged
domain to the customer sites so protocols, including routing protocols, can traverse the VPLS service.
This implementation of VPLS is provided over an IP/MPLS network architecture, which is based on the
Label Distribution Protocol (LDP). This protocol consists of a set of procedures used by participating
Label Switching Routers (LSRs) to define Label Switched Paths (LSPs), also referred to as MPLS tunnels.
These tunnels provide the foundation necessary to provision VPLS.
Label Distribution Protocol (LDP). This protocol consists of a set of procedures used by participating
Label Switching Routers (LSRs) to define Label Switched Paths (LSPs), also referred to as MPLS tunnels.
These tunnels provide the foundation necessary to provision VPLS.
This chapter documents the OmniSwitch implementation of VPLS. For information about how to config-
ure MPLS, see
ure MPLS, see
In This Chapter
This chapter describes the basic components of a service and how to configure services through the
Command Line Interface (CLI). CLI commands are used in the configuration examples; for more details
about the syntax of commands, see the OmniSwitch CLI Reference Guide.
Command Line Interface (CLI). CLI commands are used in the configuration examples; for more details
about the syntax of commands, see the OmniSwitch CLI Reference Guide.
This chapter provides an overview of VPLS and includes the following topics:
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