Avaya Configuring PPP Services Manual de usuario Pagina 43

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PPP Concepts
117360-A Rev. A 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. For more
information about protocol prioritization, see Configuring Traffic Filters and
Protocol Prioritization.
The multilink feature uses the automatically enabled functions of protocol
prioritization, but only for interrupt queuing. You cannot specify either traffic
filters or priorities. Multilink assigns the highest (that is, interrupt-level) priority
to link control packets, treating all other traffic as normal priority. This gives PPP
control messages precedence over other types of data while preserving the packet
sequencing.
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