H3C Technologies H3C Intelligent Management Center - Manual (Page 87)

4 Using L2VPN Management
L2VPN Management allows for building and managing VPLS, VLL, and PBB Layer 2 VPNs. L2VPN
Management supports both LDP and BGP signaling for VPLS VPN, supports LDP signaling for VLL VPN,
and supports PBB + VPLS VPN.
L2VPN Management brings the following benefits:
• Simplified VPN deployment—L2VPN Management provides wizards for deploying VPLS, VLL, and
PBB Layer 2 VPNs, simplifying your configurations.
• Auto discovery—L2VPN Management can automatically discover existing VPNs and add the
VPNs into IMC. You can add/delete PEs and ACs for the discovered VPNs.
• VPN monitoring—L2VPN Management provides alarms, audit state, and configuration information.
The alarms help you troubleshoot device problems. The audit state information shows the
connectivity of VPN links. An audit operation can be performed one time or periodically. The
configuration information shows detailed VPN settings, including the VSI ID, I-SID, PW ID, VPN type,
and B-VLAN.
• VPN topology—L2VPN Management shows a topology for each VPN where you can perform
operations such as viewing VPN information, ACs, and PWs, deploying and undeploying VPNs,
and auditing connectivity for a whole VPN.
Basic VPN concepts
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 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
• 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.
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