Avaya Configuring ATM Services Manual de usuario descargar pdf (Pagina 42)

Configuring ATM Services

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308612-14.00 Rev 00

You can either manually configure the carried protocol or let the signaling

procedures negotiate it dynamically during call establishment.

NULL encapsulated cells do not receive a header in a routed environment. In a

bridged environment, the content of the PDU itself includes the necessary

information for bridging the multiplexed protocols.

Encapsulation Rules for PVCs

How you assign data encapsulation to individual PVCs depends to a degree on the

data encapsulation type you assigned to the service record that contains those

PVCs. Table 1-4

provides suggestions for assigning data encapsulation to PVCs

and hybrid PVCs that reside on these service records.

When assigning a data encapsulation type to a PVC or group of PVCs, keep the

following in mind:

• When you add a PVC, it reads and uses the data encapsulation type specified

in its ATM service record.

• You can globally assign a data encapsulation type to all nonhybrid PVCs in a

particular service record, or you can assign a data encapsulation type to

individual group PVCs.

• If you change the data encapsulation value for the service record, all new

PVCs that you add to that service record use the new value.

• You must assign a data encapsulation type to hybrid-mode PVCs individually.

You cannot assign data encapsulation to a hybrid-mode PVC using the service

record.

• When you use the copy function, the new PVC uses the data encapsulation

type of the existing PVC.

Table 1-4. Assigning Data Encapsulation to Individual PVCs

Service Record Data

Encapsulation Type

Individual PVC Data

Encapsulation Type

Hybrid PVC Data

Encapsulation Type

LLC/SNAP NULL or LLC/SNAP LLC/SNAP

NULL NULL or LLC/SNAP LLC/SNAP

NLPID NLPID NLPID

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Avaya Configuring ATM Services Manual de usuario Pagina 42