What Is VPLS?
VPLS is a class of VPN or Virtual Private Network that connects multiple sites to form a single bridged domain. It is implemented using a MPLS or Multi-Protocol Label Switching Network. That makes it protocol-transparent so that all services, regardless of which location the are physically located at, appear to be on the larger LAN that serves all locations.
What are Typical Classes of Service?
Class of Services or CoS is established in MPLS networks to ensure the performance of each packet on the network. CoS classes include real time for voice and video, mission critical for time sensitive applications such as transaction processing, business critical for applications such as database access, and data for lower priority traffic that isn't time sensitive.
Transparent LAN Service
VPLS is sometimes called Transparent LAN service. That’s because WAN communications moves from level 3 to level 2. Your connection to the network is via a managed edge switch that is provided by the network operator. The inherent broadcast nature of Ethernet is preserved, creating a “plug and play” environment as new services are added to the network and discovered by other members connected to the VPLS.
Advantages of Voice over MPLS
MPLS networks have the quality of service features needed to insure low levels of latency, jitter and packet loss to ensure high quality voice transmission. You avoid toll charges by keeping your internal phone calls on the MPLS network that connects your various business locations.
Why is QoS Important?
MPLS service providers offer QoS or quality of service to meet your business needs. That ensures that VoIP telephone and video streaming will get the bandwidth, latency and jitter characteristics they need for optimum performance.