Avaya Configuring Frame Relay Services Manual do Utilizador descarregar pdf (Página 39)

Frame Relay Overview

308624-14.10 Rev 01

1-17

Using Hybrid Mode for Transparent Bridging

Figure 1-7 shows bridged traffic between site A and site B. The bridge (router 1)

is running on the frame relay interface, and its configuration does not use hybrid

mode.

Figure 1-7. Example of a Bridged Network

In this example, the bridge receives data from site A. If the bridge does not

recognize the destination address, it tries to direct traffic through another bridge

port. However, without hybrid access mode configured, the frame relay bridge

port views the paths to site A and site B as the same path. Because the bridge does

not send out data on the same port from which it just received data, the bridge

does not direct the data to site B. In this case, you should use hybrid access mode.

If you define the PVCs in hybrid mode (see Figure 1-6

on page 1-16), each PVC

acts as a separate bridge port. This enables the bridge running on the frame relay

interface to view the traffic from site A as arriving on a different port than that of

site B. When the bridge sends out data, it sends it out from all ports, including the

port that has access to site B. Therefore, data from site A can reach site B.

You configure hybrid mode by enabling the Hybrid Mode parameter for PVCs.

For instructions, see “Configuring Hybrid Mode for PVCs” on page 4-12.

Router 1

Bridge port sees one

path to sites A and B

Router 2

Router 3

Site A

Site B

Frame

relay

network

FR0008A

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Avaya Configuring Frame Relay Services Manual do Utilizador Página 39