Avaya Configuring Data Compression Services Bedienungsanleitung PDF herunterladen (Seite 52)

Configuring Data Compression Services

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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.

Using the BCC

To specify the compression mode for a line or circuit, navigate to the appropriate

prompt (for example,

box

;

serial 3/1

;

ppp

;

wcp

), and enter:

compression-mode

mode

is CPC or PPC.

For example:

box#

serial 3/1

serial/3/1#

ppp

ppp/3/1#

wcp

wcp/3/1#

compression-mode cpc

wcp/3/1#

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