Avaya Configuring Data Compression Services Bedienungsanleitung PDF herunterladen (Seite 36)

Configuring Data Compression Services

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308616-14.00 Rev 00

Nortel Networks Compression Services

Nortel Networks compression services include:

• Software-based compression for PPP, frame relay, and X.25 networks for all

router platforms and all serial interfaces.

PPP compression works on multiline, multilink, on the ISDN BRI and PRI

modules, and on lines that use Raise DTR or V.25bis modem interfaces with

dial services. Frame relay compression works on multiline and dial backup

lines.

• Hardware-based compression for PPP and frame relay networks for BN

routers using one of the following modules:

-- Octal synchronous link module using FRE-2 processors

-- FRE-2-060E processor module with the advanced compression

coprocessor daughterboard to which you can connect a broad range of

Nortel Networks link modules (see “Hardware-Based Data Compression

for the BN Platform” on page 1-3 for the list of supported link modules).

Hardware compression on the BN supports all PPP and frame relay services

that WCP software compression supports.

• Hardware-based compression for PPP and frame relay networks for the ASN

router.

A compression net module compresses data transmitted over a WAN network

by dual and quad synchronous, MCE1/ISDN PRI, MCT1/ISDN, dual

synchronous with ISDN BRI, and quad BRI net modules. Hardware

compression on the ASN supports all PPP services that WCP software

compression supports.

Nortel Networks WCP software- and hardware-based compression interoperate

fully because they use the same algorithm.

Hi/fn LZS hardware compression is supported by the FRE-2-060E processor with

the advanced compression coprocessor daughterboard for the BN when

connecting to a router from another vendor that is also running the Hi/fn LZS

algorithm.

To use software data compression effectively, you must decide how to allocate

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

transmit the data as quickly as possible without taxing the resources of the router.

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Avaya Configuring Data Compression Services Bedienungsanleitung Seite 36