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La meilleur architecture

Notes:

The generic multilayer model is shown.
L2 switching is employed in the wiring closet.
L3 switching is employed in the distribution layer.
The backbone technology is typically L2 Ethernet switching, L3 Ethernet switching, or ATM LANE.
A modular approach is used. Each module is similar in design. This cookie cutter approach provides advantages in configuration and management of a large network.