Avaya Configuring Data Compression Services Manuel d'utilisateur télécharger pdf (Page 19)

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Chapter 1

Data Compression Overview

Bay Networks data compression services enable you to reduce line costs and

improve response times over wide area networks. Our data compression

eliminates redundancies in data streams. When you use compression on your

network, bandwidth efﬁciency improves, and you can transmit more data over a

given amount of network bandwidth.

Our compression services include

• Software-based compression for Frame Relay, Point-to-Point Protocol (PPP),

and X.25 networks for all router platforms and all serial interfaces. This

includes PPP compression on multiline, multilink, on the ISDN BRI module,

and on interfaces that use raise DTR or V.25 bis signaling with dial services.

• Hardware-based compression for Frame Relay and PPP networks that use the

octal synchronous link module for the Backbone Node (BN®) using FRE2

processors. Bay Networks provides hardware compression as an optional

daughterboard that attaches to the octal synchronous link module. Hardware

compression supports all of the PPP services that software compression

supports.

Bay Networks software- and hardware-based compression interoperate fully

because they use the same algorithm.

To use data compression effectively, you must make decisions about how much

memory to allocate to this task. The goal is to compress data as much as possible

and to transmit the data as quickly as possible without unduly taxing the resources

of the router.

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Avaya Configuring Data Compression Services Manuel d'utilisateur Page 19