
Configuring Data Compression Services
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117352-B Rev. 00
Bay Networks Compression Services
Bay Networks compression services include:
• Software-based compression for PPP, frame relay, and X.25 networks for all
router platforms and all serial interfaces. This includes PPP compression 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. It also includes
frame relay compression on multiline and dial backup lines.
• Hardware-based compression for PPP and frame relay networks that use the
octal synchronous link module for the BN using FRE-2 processors. Hardware
compression supports all of the PPP and frame relay services that WCP
software compression supports.
• Hardware-based compression for PPP and frame relay networks for the ASN.
A compression net module compresses data transmitted over a WAN network
by dual and quad synchronous, MCE1/ISDN PRI, MCT1/ISDN, dual sync
with ISDN BRI, and QBRI net modules. Hardware compression supports all
of the PPP services that WCP software compression supports.
Bay Networks WCP software- and hardware-based compression interoperate fully
because they use the same algorithm. Stac LZS software compression does not
interoperate with hardware compression.
To use 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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