Virtual Private LAN Service (a.k.a. Transparent LAN Service) is just one example of a packet technology of the future. Essentially, it’s another class of Virtual Private Networks (VPNs) that allow corporate users to secure pipes through public networks.
It’s an emerging subset of technologies that enable new private data services to be offered across standards-based packet networks. The main advantage of VPLS is that it offers a seamless integration between the carrier network and private, corporate networks. Using VPLS, customers can connect multiple sites over a provider-managed IP/MPLS network. All customer sites in a VPLS appear to be on the same LAN, regardless of their location. More importantly, VPLS uses Ethernet as the customer handoff, simplifying the LAN/WAN boundary and allowing for rapid and flexible service provisioning.
Even though the VPLS standard has been in development for roughly two years, VPLS implementations are still in their early days. The service is dependent on the rollout of Ethernet services. Vendors are just now beginning to introduce products that conform to one of two standards drafts.
Here’s a hyperlinked summary:
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Background Reading and Listening
- Report: Virtual Private Networks
- Report: Metro Ethernet
- Beginner’s Guide: Ethernet
- Beginner’s Guide: Multiprotocol Label Switching (MPLS)
- Light Reading Insider Report: VPLS Variations