However, as shown in Figure 16.5, there appears to be a long way to go??”even with
regards to making available most of the fairly well-defined Carrier Ethernet attributes.
There Is No One All Encompassing Solution There is no one solution that is both
economical and has adequate features to support the delivery of Carrier Ethernet??”
from simple point-to-point E-Line connectivity in the access to a multipoint solution in
the core of the Service Provider network.
Therefore, it is not uncommon for Service Providers to employ multiple solutions in
their networks, perhaps one in the access and another, deeper in the metro.
A Look into the Future of Delivering Carrier Ethernet
The future of Carrier Ethernet (services) and its delivery in Service Provider networks are
intimately intertwined. If the demand for Carrier Ethernet itself wanes, then it is more
than likely that the delivery solutions will correspondingly stagnate (at least from the
standpoint of Carrier Ethernet services9); on the other hand, if Carrier Ethernet thrives,
9 Note that most of the solutions also support other non-Carrier Ethernet services.
Evolution of Carrier Ethernet Solutions 519
it will spur an aggressive effort in further optimizing (more features, lower cost, etc.
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