Avaya Configuring Data Compression Services Manuel d'utilisateur télécharger pdf (Page 48)

Configuring Data Compression Services

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117352-D Rev. 00

Allocating Compression Memory for WCP

Using WCP across a network involves allocating memory to maximize

compression without taxing the resources of your router. To achieve this goal, you

can customize compression parameters to:

• Maximize the compression ratio.

• Maximize throughput.

• Prevent data loss.

Maximizing the Compression Ratio

You can compress data in one of two modes:

•

Continuous packet compression (CPC)

maintains compression history across

packets. CPC yields a higher compression ratio

than packet-by-packet

compression. In most circumstances, you should select CPC, the default

value, to maximize compression.

•

Packet-by-packet compression (PPC)

creates a new history for each packet.

PPC yields a lower compression ratio than CPC. Select PPC only for links

that drop a very large number of packets. Be aware that under these

circumstances, implementing data compression may offer little or no

advantage.

If either side of the link specifies PPC, both sides of the link must use PPC.

To specify the compression mode for a line, complete the following tasks:

Site Manager Procedure

You do this System responds

1. In the Configuration Manager window,

choose

Protocols

The

Protocols menu opens

2. Choose

WCP

. The WCP menu opens.

3. Choose

Lines

. The WCP Line Interfaces List window

opens.

4. Select a line from the list.

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Avaya Configuring Data Compression Services Manuel d'utilisateur Page 48

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