Avaya Router Software 11.01 aviso descargar pdf (Pagina 35)

Release Notes for Router Software Version 11.01

114093 Rev. B 15

Service Records and Group Mode

Service records retain all of the advantages of group mode. Service records also

• Allow multiple groups of PVCs per Frame Relay connection

• Enable you to gather multiple PVCs for each network protocol into a separate

group or service record, thereby reducing the number of buffers needed per

circuit during broadcasts

• Lower customer costs by creating multiple broadcast domains

Using service records to deﬁne Frame Relay removes the need to think in terms of

group mode.

Service Records and Direct Access Mode

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 advantages are that it

• Limits broadcasts to one PVC

• Enables multiple layer-three networks per interface

Direct access mode disadvantages are that it

• Creates a new Frame Relay circuit for each PVC, consuming router resources

• Allows only one PVC per network

Service Records and Direct Mode

A service record with a single PVC is the same as a direct access mode PVC.

Using service records to deﬁne Frame Relay removes the need to think in terms of

direct mode.

Service Records and Hybrid Access Mode

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

direct access modes. It works only for non-fully meshed network conﬁgurations

that use both bridging and routing over a single Frame Relay interface. This mode

is also best for spanning tree bridging.

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Avaya Router Software 11.01 aviso Pagina 35