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Layer 2 Circuits Terms and Acronyms

Layer 2 circuit

A method of transporting Layer 2 frames between provider edge (PE) routers across an MPLS backbone using LDP signaling.

circuit cross-connect (CCC)

A Juniper Networks method of exchanging frames between one router interface running a Layer 2 protocol and another router interface using the same Layer 2 protocol.

control word

A 32-bit field used in Layer 2 circuits to transport sequence information, Layer 2 media control information, and padding.