HP Intelligent Management Center Licenses - Manual (Page 8)

2 L2VPN Manager
L2VPN Manager is used to manage the Layer 2 VPN networks, including MPLS-based VPLS networks
and link layer-based PBB networks.
The L2VPN Manager provides four functions: VPN devices, VPN resources, VPN deployment, and
automatic discovery. For more information about these functions, see Operation Guide.
L2VPN Manager allows administrators to assign operation rights to operators. For further details,
see VPN Privilege Management.
To quick start with the L2VPN Manager, refer to L2VPN User Guide.
L2VPN Manager Overview
L2VPN Manager is used to manage the Layer 2 VPN networks, including MPLS-based VPLS networks
and link layer-based PBB networks.
Virtual Private LAN Service (VPLS), also called Transparent LAN Service (TLS) or Virutal Private
Switched Network Service, can deliver a point-to-multipoint Layer 2 VPN (L2VPN) service over
public networks. With VPLS, geographically-dispersed sites can interconnect and communicate
over Metropolitan Area Network (MAN) or Wide Area Network (WAN) as if they were on the
same Local Area Network (LAN).
VPLS 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 MAN or WAN.
Basic concepts of VPLS
The figure shown above illustrates a typical VPLS networking scenario, which involves the following
basic concepts:
•
CE (Customer Edge): Customer edge device that is directly connected with the service provider
network.
•
PE (Provider Edge): Provider edge device that connects one or more CEs to the service provider
network, mainly for access to VPN services.
•
VSI (Virtual Switch Instance): Virtual switch instance that maps actual VPLS access links to
virtual links. As shown in the above figure, to ensure connectivity between devices, PE 1 and
PE 2 are configured with a VSI respectively, and the VSI ID is 1.
•
PW (Pseudo Wire): A pseudo wire is the bidirectional virtual connection between two VSIs.
A pseudo wire consists of two unidirectional virtual circuits (VCs).
•
AC (Attachment Circuit): Attachment circuit that connects a CE to a PE. It can use physical
interfaces or virtual interfaces.
•
Tunnel: A tunnel, usually an MPLS tunnel, used to carry one or more PWs. It is a direct channel
between a local PE and the peer PE for transparent transmission in-between.
8 L2VPN Manager