Avaya Configuring Data Compression Services Manual do Utilizador

Part No. 114061 Rev. AAugust 1996Router Software Version 11.0Site Manager Software Version 5.0 Configuring Data Compression Services

114061 Rev. A xi Tables Table 3-1. Hardware Compression -- 8 KB Contexts ...3-3Table 3-2. Hardware Compr

114061 Rev. A xiii About This Guide If you are responsible for configuring and managing Bay Networks ™ routersand/or BNX ® switching platforms runn

Configuring Data Compression Servicesxiv 114061 Rev. A Conventions bold text Indicates text that you need to enter, command names, and buttons in men

About This Guide 114061 Rev. A xv Acronyms CCP Compression Control ProtocolCPC continuous packet compressionCRC cyclic redundancy checkDDN Defense D

114061 Rev. A xvii Technical Support and Online Services To ensure comprehensive network support to our customers and partners worldwide, Bay Networ

Configuring Data Compression Servicesxviii 114061 Rev. A Bay Networks Customer Service If you purchased your Bay Networks product from a distributor

Technical Support and Online Services 114061 Rev. A xix Bay Networks Information Services Bay Networks Information Services provide up-to-date suppo

ii 114061 Rev. A4401 Great America Parkway 8 Federal StreetSanta Clara, CA 95054 Billerica, MA 01821 Copyright © 1988–1996 Bay Networks, Inc. All rig

Configuring Data Compression Servicesxx 114061 Rev. A Support Source CD This CD-ROM -- sent quarterly to all contracted customers -- is a complete Ba

Technical Support and Online Services 114061 Rev. A xxi InfoFACTS InfoFACTS is the Bay Networks free 24-hour fax-on-demand service. This automated s

114061 Rev. A 1-1 Chapter 1Starting Compression The quickest way to begin using data compression on your network is to enable it with the default va

Configuring Data Compression Services1-2 114061 Rev. A Configuring Hardware Compression To use hardware compression you must have an octal sync link m

Starting Compression114061 Rev. A 1-3 Starting Data CompressionYou enable data compression for PPP and Frame Relay differently from X.25.Starting Data

Configuring Data Compression Services1-4 114061 Rev. ADeleting Data Compression from a PlatformTo delete WCP from all circuits on the router, complete

114061 Rev. A 2-1 Chapter 2Data Compression OverviewBay Networks data compression services enable you to reduce line costs and improve response times

Configuring Data Compression Services2-2 114061 Rev. AData Compression ArchitectureBay Networks uses the following algorithm and protocols to provide

Data Compression Overview114061 Rev. A 2-3 Data Compression PerformanceThe goals in using data compression are to achieve a high compression ratio whi

114061 Rev. A iii Bay Networks Software License This Software License shall govern the licensing of all software provided to licensee by Bay Network

Configuring Data Compression Services2-4 114061 Rev. AHardware Compression for the BNThe compression daughterboards for the BN are• AG2104037 - Octal

Data Compression Overview114061 Rev. A 2-5 The only difference between the 32-contexts and 128-contexts Bay Networks compression daughterboards and ne

Configuring Data Compression Services2-6 114061 Rev. AFigure 2-1. CCP, WCP, and NCP Initialization on a PPP LinkRouter A Router B1. PPP interface on

Data Compression Overview114061 Rev. A 2-7 CCP NegotiationsCCP allows the two ends of a PPP connection to negotiate whether to use data compression, a

Configuring Data Compression Services2-8 114061 Rev. ACompression Features for Specific ProtocolsBay Networks data compression services vary in some de

Data Compression Overview114061 Rev. A 2-9 The backup circuit can inherit the primary’s configuration, or it can use its own. When the Frame Relay prim

Configuring Data Compression Services2-10 114061 Rev. AFor more information about Bay Networks multiline, see Configuring Line Services.PPP MultilinkTh

Data Compression Overview114061 Rev. A 2-11 X.25 ServicesAn X.25 network permits as many as 128 VCs to exist on the same physical link at the same tim

Configuring Data Compression Services2-12 114061 Rev. ASoftware-Based Data CompressionSoftware-based data compression works over WAN links running Fra

114061 Rev. A 3-1 Chapter 3Customizing Data CompressionWhen you enable data compression, default values are in effect for all parameters (see paramete

iv 114061 Rev. A Bay Networks Software License (continued) 9. Licensee shall not reverse assemble, reverse compile, or in any way reverse engineer

Configuring Data Compression Services3-2 114061 Rev. AIf either side of the link specifies PPC, both sides of the link use PPC.Maximizing ThroughputEac

Customizing Data Compression114061 Rev. A 3-3 History Size with Hardware CompressionHardware compression daughterboards and net modules are available

Configuring Data Compression Services3-4 114061 Rev. AYou can mix 8 KB and 32 KB contexts on either board. Be aware that if you are bringing VCs up an

Customizing Data Compression114061 Rev. A 3-5 • Number of resets.Increase the buffer size for a link with a large number of resets and a low number of

Configuring Data Compression Services3-6 114061 Rev. ASelecting a Fallback Compression ModeFallback compression mode is configurable on a line basis on

114061 Rev. A A-1 Appendix AData Compression ParametersWCP Line ParametersUse the following descriptions to set Bay Networks data compression line par

Configuring Data Compression ServicesA-2 114061 Rev. AParameter: Compression ModePath: Configuration Manager > Protocols > WCP > LinesDefault:

Data Compression Parameters114061 Rev. A A-3 Parameter: History SizePath: Configuration Manager > Protocols > WCP > LinesDefault: 32 KOptions:

Configuring Data Compression ServicesA-4 114061 Rev. AParameter: Buffer SizePath: Configuration Manager > Protocols > WCP > LinesDefault: Norm

Data Compression Parameters114061 Rev. A A-5 WCP Circuit Interface ParametersUse the following descriptions to set Bay Networks data compression.Param

114061 Rev. A v Contents About This Guide Before You Begin ...

Configuring Data Compression ServicesA-6 114061 Rev. AParameter: Compression ModePath: Configuration Manager > Protocols > WCP > InterfacesDef

Data Compression Parameters114061 Rev. A A-7 Parameter: History SizePath: Configuration Manager > Protocols > WCP > InterfacesDefault: Inherit

Configuring Data Compression ServicesA-8 114061 Rev. AParameter: Engine TypePath: Configuration Manager > Protocols > WCP > InterfacesDefault:

114061 Rev. A Index-1 Aallocating memory, 3-1Bbandwidth-on-demand, 2-9Bay NetworksCompuServe forum, xxCustomer Service FTP, xixhome page on World Wide

Configuring Data Compression ServicesIndex-2 114061 Rev. Agetting help (continued)through Customer Service FTP, xixthrough InfoFACTS service, xxithrou

vi 114061 Rev. A Chapter 2 Data Compression Overview Data Compression Architecture ...

114061 Rev. A vii Chapter 3 Customizing Data Compression Allocating Compression Memory ...

114061 Rev. A ix Figures Figure 2-1. CCP, WCP, and NCP Initialization on a PPP Link .........2-6