The Landscape of Solutions
In identifying the various (Transport/Network layer) solutions that will be discussed
in this book, the following guidelines were used:
?– The solutions (currently) support the delivery of Carrier Ethernet services (i.e.,
E-LINE and/or E-LAN services with the attendant five carrier-class attributes, as
discussed in Chapter 2; albeit it must be noted that not all the carrier-class attributes
may be provided just yet).
?– They encompass the broadest range of solutions employed today by a host of different
Service Providers (regulated Carriers, Inter exchange Carriers, Cable Multi
Service Operators (MSOs), Local Loop Carriers, Competitive Carriers etc).
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?– They are delivered over different wired media such as copper, fiber, HFC, and also
over wireless.
?– They provide transport and/or higher-level networking functions such as switching
and routing.
?– They are delivered in the MAN and/or beyond, in the WAN.
?– They are offered as commercial solutions by equipment vendors (although not
necessarily for exclusively delivering Ethernet i.e., other services could also be
delivered??“and often are, using a particular solution).
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