Typical Deployment Scenarios This portion of the chapter helps illustrate how common
Ethernet E-LINE and E-LAN services are offered over this solution. It also identifies
any additional solutions that are required to provide these services (for example
if a specific solution can only be used for E-LINE services, what would be required to
offer E-LAN services).
Ongoing Developments Here, we identify the areas where the standards bodies
(such as IEEE, IETF, MEF, ITU et al.) and other forums are focused with respect to
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further optimizing the solution for delivering Carrier Ethernet. In general, the amount
of focus on a particular solution in the standards bodies is proportional to its continued
importance as a solution for delivering Carrier Ethernet.
Economic Assessment This discussion gives a sense of the economic attractiveness
of a particular solution. The goal is not necessarily to provide an exact cost (in fact, it
is implausible to do so7), but rather to provide insights into the range of costs the solution
entails.
Vendors Promoting This Solution This section identifies the main vendors actively
promoting the solution as of the time of this writing.
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