Avaya Configuring Frame Relay Services Manual de usuario descargar pdf (Pagina 28)

Configuring Frame Relay Services

2-4

Direct Access

In direct access mode, upper-layer protocols treat the Frame Relay network as a

series of point-to-point connections. The upper-layer protocols view each PVC as

an individual network interface.

Direct access mode is best suited to small, non-fully meshed conﬁgurations.

Speciﬁcally, you can use direct access mode for conﬁgurations in which each

protocol must run over a separate PVC. This mode is also good for spanning tree

bridging.

If you use direct access mode, you must conﬁgure each PVC manually, which

includes assigning protocols to run on each PVC. Figure 2-3 illustrates Frame

Relay direct access mode.

Figure 2-3. Direct Access Mode Conﬁguration

Direct access mode supports all protocols. A direct access PVC may run several

protocols simultaneously, or you can dedicate a PVC to a particular protocol.

Note, however, that dedicating a PVC to a particular protocol creates

conﬁguration overhead, increased memory use, and additional address space.

SITE A

SITE B

SITE C

SITE D

PVC

Upper-layer

Protocol

Frame

Relay

Network

FR0006A

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Avaya Configuring Frame Relay Services Manual de usuario Pagina 28