Avaya Configuring PPP Services Bedienungsanleitung PDF herunterladen (Seite 45)

PPP Concepts

308639-14.00 Rev 00

2-17

Packets sent over a multilink bundle have an outer header packet that contains a

unique packet sequence number and allows for:

• Fragmentation of the original packets

• Assignment of sequence numbers to each fragment

• Transmission over a number of links in the bundle

• Reassembly of the original sequence and packet size at the receiving peer

Using Protocol Prioritization with Multiline and Multilink

When you configure a router, you can prioritize the different types of traffic sent

across a synchronous line. This process is called protocol prioritization. The

ability to prioritize traffic is important because some types of operations require

faster responses than other types. For example, PPP control messages must have

precedence over other types of data.

Selecting PPP on a circuit automatically enables protocol prioritization without

specifying any filters.

With the multiline feature, you can configure both priorities and filters.

With the multilink feature, you can configure priority queuing. Priority queuing

enables you to resequence outbound data packets into prioritized delivery queues

called priority queues. To use priority queuing over multilink, first set the PPP

Mode parameter to multilink and then configure the parameters in the Edit

Protocol Priority Interface window. If compression is configured, the router

prioritizes data before compressing it.

For more information about how to configure priority queuing and filters, see

Configuring Traffic Filters and Protocol Prioritization.

Differences Between Multiline and Multilink

Both multiline and multilink use circuits consisting of one or more data paths

between two peer routers. Each has its special characteristics and advantages,

described in the following paragraphs and summarized in Table 2-3

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Avaya Configuring PPP Services Bedienungsanleitung Seite 45