Avaya Configuring Frame Relay Services Manual de usuario descargar pdf (Pagina 36)

Configuring Frame Relay Services

2-12 114058 Rev. A

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

alternates randomly 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 multiline up to four service records. Each service record must be on a

different physical line on the router. We also recommend that each line 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, be

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

Refer to Chapter 3 for instructions about grouping service records for multiline.

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 Manual de usuario Pagina 36