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ATM Physical Connections

ATM interfaces and subinterfaces support two types of connections—point-to-point and multipoint. The router defaults to point-to-point.

Point-to-point—Indicates a standard connection; for example, connecting two ATM end stations
Multipoint—Indicates a single-source end system connected to multiple destination end systems. Multipoint indicates a nonbroadcast multiaccess (NBMA) interface. See ATM NBMA.

Depending on the type of connection you choose, you can specify one or more PVCs on each interface. For a standard point-to-point ATM interface, you configure only one PVC. For NBMA ATM connections, you configure multiple circuits.

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