Index[A] [B] [C] [D] [E] [F] [G] [H] [I] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [Z] EMS (Ethernet Multipoint Service) [See also VPLS (virtual private LAN service).] forwarding at remote node Layer 2 VPNs encryption, MPLS VPNs enterprise customers, service convergence business drivers enterprise organizations challenges Layer 3 VPNs services Layered VPNs outsourcing decisions central services network segmentation TCO (total cost of ownership) service convergence, business drivers service provider business engineering EoMPLS (Ethernet over MPLS) EPL (Ethernet Private Line) EPR (Ethernet Private Ring) Equant case study company background economies of scale services customer VPN bridge account team success factors company background conclusions divestiture issues ERS (Ethernet Relay Service) Ethernet Layer 2 VPNs like-to-like transport Ethernet Multipoint Service (EMS) Ethernet over MPLS (EoMPLS) Ethernet Private Line (EPL) Ethernet Private Ring (EPR) Ethernet Relay Service (ERS) Ethernet Wire Service (EWS) evolutionary strategies EWS (Ethernet Wire Service) explicit routing extranets Layer 3 VPNs MPLS security |