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Does anyone know the difference between an ESP (Ethernet switching path) and an EVC (Ethernet virtual connection)?

Best regards, Michelot

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    Aug 11 '17 at 4:10
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An EVC is a service providing ethernet connectivity between two or more user-network interfaces across a metro ethernet network. It can be point-to-point, point-to-multipoint (tree topology), or multipoint-to-multipoint (LAN topology). It provides security, ensuring that traffic on the EVC doesn't get mixed up with that on other connections in the network; and it may optionally provide guaranteed quality of service. See MEF 12.2.

An ESP is a unidirectional connection within a provider backbone bridge network. ESPs can be used to route traffic in an EVC, if the provider's network supports it, but there are also other routing technologies that can be used instead. The user is not typically aware of the particular method used. See IEEE 802.1Qay-2009 for the formal ESP definition.

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