Avaya Configuring Frame Relay Services Manual do Utilizador descarregar pdf (Página 46)

Configuring Frame Relay Services

2-16

117376-C Rev. 00

Direct Access Mode

Direct mode describes a service record with one PVC. 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.

Service records in direct access mode:

• Limit broadcasts to one PVC.

• Enable multiple layer 3 networks per interface.

Hybrid Access Mode

Hybrid access mode, as its name implies, combines characteristics of group and

direct access modes. Frame relay hybrid mode enables you to use the same PVCs

for both routing and bridging. It works only for non-fully meshed network

configurations that use:

• Both bridging and routing over a single frame relay interface

• Spanning tree bridging

In a fully meshed network, PVCs exist between each pair of nodes in the network.

In a non-fully meshed network, PVCs exist only between nodes that need to

communicate. Figure 2-6

shows a non-fully meshed network that uses hybrid

mode.

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Avaya Configuring Frame Relay Services Manual do Utilizador Página 46