Инструкции По Установке для 3com S7906E

 

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When configuring MPLS L2VPN, go to these sections for information you are interested in: 

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MPLS L2VPN Overview 

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MPLS L2VPN Configuration Task List 

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The term router in this document refers to a router in a generic sense or a Layer 3 switch. 

 

This section covers these topics: 

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SVC MPLS L2VPN 

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Kompella MPLS L2VPN 

Traditional VPNs based on Asynchronous Transfer Mode (ATM) or Frame Relay (FR) are quite popular. 

They share the network infrastructure of carriers. However, they have some inherent disadvantages: 

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Dependence on dedicated media: To provide both ATM-based and FR-based VPN services, 

carriers must establish two separate infrastructures across the whole service scope, one ATM 

infrastructure and one FR infrastructure. Apparently, the cost is very high and the infrastructures 

are not utilized efficiently. 

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Complicated deployment: To add a site to an existing VPN, you have to modify the configurations 

of all edge nodes connected with the VPN site. 

MPLS L2VPN is developed as a solution to address the above disadvantages. 

MPLS L2VPN provides Layer 2 VPN services on the MPLS network. It allows carriers to establish 

L2VPNs on different data link layer protocols, including ATM, FR, VLAN, Ethernet and PPP.