EPL vs EVPL

Ethernet private line (EPL) and Ethernet virtual private line (EVPL) are Ethernet services defined by the Metro Ethernet Forum (MEF) and fall under their Ethernet services category ‘E-Line’.

Both EPL and EVPL Ethernet provide the simplicity of private connections combined with the flexibility and scalability of MPLS technology across a range of bandwidths, but the main difference for businesses is the configuration they would require.

EPL provides Point-to-Point (P2P) connectivity between a pair of dedicated User Network Interfaces (UNIs) and allows for a high degree of transparency along the network.

 

 

EVPL, however, can enable multiple Ethernet Virtual Connection (EVCs) per UNI to support Point-to-Multipoint (P2MP) connectivity through the use of service multiplexing meaning businesses can benefit a one-to-many topology.

As well as E-Line via EPL or EVPL, there are also a number of other Ethernet connectivity options available such as VPLS (E-LAN) and NNI (ENNI) and P2NNI (E-Access). VPLS enables a many-to-many topology that can securely connect multiple sites in to a single bridged domain with flexible capacity.

 

For larger businesses, a Network-to-Network Interface (NNI) is the best solution, offering a high bandwidth single point of access in a core network location ensuring high availability and low latency.

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