Bandwidth Enterprise customer has
dedicated use of bandwidth,
typically 1GbE
Service Provider offers bandwidth on its infrastructure,
typically anywhere from 64Kb and higher. Dedicated
connections usually start from 1.544M (T-1 lines). The
Service Provider charges for this bandwidth and aggregates
different customers over a shared infrastructure??”usually
over 10G and higher.
Manageability Relatively simple (fewer
connections over a small
area) and easily managed
Highly complex, managing thousands of remote users, each
subscribed to a different set of services and its associated
SLAs.
Sophisticated mechanisms necessary to manage
economically (i.e., keep the cost of delivery low)
Resiliency Not very critical because
problems can usually be fi xed
quickly
Critical, as unresolved failures will typically impact Service
Provider revenues and long-term competitiveness (and
hence, survival).
Service-level
agreements (SLAs)
None usually necessary Essential and often demanded by end users because their
mission-critical applications increasingly employ Service
Provider-offered services.
26 Chapter 1
dropped locally in the metro, the MSPP serves as a termination point for a service,
or it is connected to a regional or long-haul ring that carries the traffic to a remote
location.
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