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| Summary

Transparent LAN services provide up to 10 Gb/s WAN connectivity across a wide geographic region, typically comprising a metropolitan area. The connectivity provided by TLS has the appearance of being realized over a local LAN, while actually covering a wide geographic area. In particular, TLS enables VLANs to span a metropolitan area network.

TLS can run over most high-speed WAN transports, such as SONET, SDH, and DPT. The Cisco implementation of TLS features Gigabit Ethernet or 10 Gigabit Ethernet running over the underlying WAN transport.