What is L2VPN VFI?

The L2VPN VFI context instantiates Virtual Private LAN Services (VPLS) VFI for multipoint scenarios. Pseudowires can be defined as members of an L2VPN VFI context. • Bridge domains or VLANs are used for multipoint scenarios. EFPs, pseudowires, or VFIs can be configured as members of a bridge domain.

What is Pseudowire headend?

This function, called Pseudowire Headend Termination (PWHT or PHT) is an other puzzle’s piece of the more broad “Seamless MPLS” concept. Full subscribers management service, HQoS and Policing, are applied to a new logical internal interface (ps0) which is anchored to a PFE by the well known premium lt- interface.

Why is L2VPN needed?

L2VPN connectivity. that emulates a switched Ethernet (V)LAN across a PSN. provides point-to-point connectivity for a variety of link layers, including Frame Relay, ATM, Ethernet, PPP, etc., across a PSN.

How does MPLS L2VPN work?

In an MPLS-based Layer 2 VPN, traffic is forwarded by the customer’s customer edge (CE) switch (or router) to the service provider’s provider edge (PE) switch in a Layer 2 format. It is carried by MPLS over the service provider’s network and then converted back to Layer 2 format at the receiving site.

How is VPLS different from MPLS?

MPLS offers increased flexibility and scalability through the use of virtual private networks that automatically segregate traffic to optimise performance, while VPLS is ideal for organisations that want their in-house teams to enjoy complete control over their routing by combining LAN and WAN in a way that optimises …

Why is Pseudowire used?

In computer networking and telecommunications, a pseudowire (or pseudo-wire) is an emulation of a point-to-point connection over a packet-switched network (PSN). The pseudowire emulates the operation of a “transparent wire” carrying the service, but it is realized that this emulation will rarely be perfect.