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Translational Cross-Connect and Layer 2.5 VPNs Terms and Acronyms

 C  L  P  T  

C

circuit cross-connect (CCC)

A method of exchanging frames between two router interfaces running the same Layer 2 protocol, such as ATM, Cisco HDLC, Ethernet, extended VLAN, Frame Relay, and PPP.

customer edge router (CE)

Any router that connects a customer site to a PE router.

L

Layer 2.5 circuits

A method of privately connecting sites across the Internet. Layer 2.5 circuits function like Layer 2 circuits, but connect two sites that use different Layer 2 protocols.

Layer 2.5 VPNs

A method of privately connecting sites across the Internet. Layer 2.5 VPNs function like Layer 2 VPNs, but connect two sites that use different Layer 2 protocols.

P

provider core router (P)

Any router that lies between PE routers in the provider core network.

provider edge router (PE)

Any router that connects customer edge (CE) routers to the provider core network.

T

translational cross-connect (TCC)

A Juniper Networks method of exchanging frames between two router interfaces running different Layer 2 protocols, such as ATM, Cisco HDLC, Ethernet, extended VLAN, Frame Relay, and PPP.