Bandwidth profiles enable both
Service Providers and subscribers to optimize bandwidth and economics.
Service Providers have the ability to offer bandwidth in small increments and usually
without having to add new physical interfaces. This means they can offer, engineer,
and bill only the bandwidth needed by the subscriber for a specific service.
NOTE Multiple services can be offered over a subscriber UNI, and each of these services
can have its own bandwidth profile.
Subscribers can purchase and pay for only the bandwidth they need. Furthermore,
subscribers can be assured of a ???committed??? amount of bandwidth that meets certain
performance objectives (usually specified in an SLA) and ???excess??? bandwidth that may
not meet the SLA.
14 Half duplex means transmission in one direction at any one time. Full duplex means transmission in both
directions simultaneously; these are briefly discussed in Chapter 1.
Carrier Ethernet 63
Bandwidth Profile Traffic Parameters A Bandwidth profile associated with an
Ethernet service consists of four traffic parameters: Committed Information Rate
(CIR), Committed Burst Size (CBS), Excess Information Rate (EIR), and Excess Burst
Size (EBS); in addition a service frame is associated with a Color Mode (CM).
Pages:
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216