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MPLS Fundamentals by Luc De Ghein - CCIE No. 1897

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Multi-VRF CE

The Multi-VRF CE feature—also known as VRF-Lite—is a feature whereby the VPN functionality is extended to the CE router in a cheap way. Assume that you have a company with a large main site and some smaller sites that are interconnected across an MPLS VPN network. The main site of the company is rather large and has several departments that need to be separated from each other for privacy reasons. These departments (finance, human resources, engineering, and so on) then connect to their respective department remote sites through the MPLS VPN network. You can separate the departments by implementing VLANs on switches in the main site and mapping each VLAN to a VRF (sub)interface on the PE router. Instead of using a Layer 2 switch ...

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