Avaya Configuring Frame Relay Services Bedienungsanleitung PDF herunterladen (Seite 66)

Configuring Frame Relay Services

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117376-C Rev. 00

In this example, when the router receives traffic destined for the network, it

alternates or randomizes (depending on how you configure it) between line A and

line B to transmit the data. The router uses both lines simultaneously to balance

the traffic between each path. If one of these lines goes down, the router uses the

remaining line.

You can create a multiline configuration of up to four service records. Each

service record must be on a different physical line on the router. Each line should

be on a different slot to provide fault tolerance.

You must also match DLCIs in each service record of the multiline. Matching

DLCIs ensures that a backup exists for each PVC.

The most important part of configuring multiline is setting the PVC DLCI

number. This number identifies each PVC, thereby specifying a path for the router

to direct data to the network. For each frame relay PVC that you configure, check

that PVCs with the same destination have the same DLCI number.

For more instruction on configuring multiline mode, see “Grouping Service

Records for Multiline Mode” on page 3-34.

Traffic Distribution Between Data Paths

To distribute traffic between multiline data paths, you can use one of two methods:

• Random distribution

• Address-based distribution

Random Distribution

Random distribution means that as the router sends out each packet, it alternates

between the lines. This option determines which line the packet uses based on a

randomly assigned number. For each outbound packet, the router generates a

random number, and this number designates the line to use.

Note:

If you use multiline, packets traveling on the two paths may arrive at

their destination out of sequence. Some protocols do not tolerate packets

arriving out of sequence and, as a result, you may experience poor

performance or failures.

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Avaya Configuring Frame Relay Services Bedienungsanleitung Seite 66