Avaya Configuring Data Compression Services Bedienungsanleitung PDF herunterladen (Seite 40)

Configuring Data Compression Services

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117352-B Rev. 00

If a router using software version 12.10 software is communicating with a router

using software prior to version 12.10, the routers must negotiate WCP below the

bundle, so the thresholds will be based on uncompressed data.

To configure these thresholds, refer to Configuring Dial Services.

PPP Dial-on-Demand

Dial-on-demand service enables you to establish a circuit only when you want to

transmit and receive data, as opposed to having a leased line, which is always

available. By using a circuit on a demand basis, you can significantly reduce your

line costs.

PPP Dial Backup

PPP also allows you to configure dial backup service. If a primary PPP line fails

and you have enabled dial backup, the router automatically establishes a backup

line. You cannot enable any protocols, including compression, on a backup circuit,

because a backup circuit inherits its protocols from the primary circuit. If the

primary circuit uses compression, then the backup circuit does also.

For more information on Bay Networks dial services, refer to Configuring Dial

Services.

Frame Relay Services

You can use software (WCP or Stac LZS) or hardware data compression with

frame relay. You can use compression with some virtual circuits (VCs), and not

with others, as you choose, both for regular frame relay VCs, and for those you

configure in hybrid mode. You can also use compression with dial-on-demand and

dial backup services.

You must enable compression on both sides of a frame relay link. If you enable

data compression on only one side of the link, data transmission occurs, but in

uncompressed form.

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Avaya Configuring Data Compression Services Bedienungsanleitung Seite 40