Avaya Configuring ATM Services Manual de usuario Pagina 93

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ATM Features and Implementation Notes
5-9
One PVC
One PVC per service record works the same way as multiple PVCs per service
record, except that you assign only one PVC per service record. When you define
only one PVC per service record, upper-layer protocols treat the ATM network as
a series of direct, point-to-point connections, viewing each PVC as an individual
network interface.
You can, therefore, configure each PVC with different protocols and parameter
settings. This allows you to connect to different network sites using, for example,
different types of data encapsulation (Figure 5-4).
Figure 5-4. One PVC per Service Record
Assigning one PVC per service record allows you to dedicate a PVC to a
particular protocol, but at the expense of some configuration overhead, memory,
and address space.
This type of configuration is best suited to small, nonmeshed configurations, or to
configurations in which protocols must reside on separate PVCs.
Note: The maximum number of PVCs you can configure in this way varies,
depending on the configuration of the router, the number of protocols running
on the circuits, and the number of routing entries.
Site A
Upper-layer
Protocol
PVC
Service
Record
ATM
Physical
Interface
Service
Record
ATM
Network
PVC
Site B
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