Avaya Configuring Data Compression Services Manuel d'utilisateur

Configuring Data Compression ServicesPart No. 117352-D Rev. 00November 1998BayRS Version 13.10Site Manager Software Version 7.10

117352-D Rev. 00Index-1Aacronyms, xvBbandwidth-on-demand, 2-13buffer sizedefined, 3-7modifying, 3-8Buffer Size parameter, WCP line, A-6CCCP Type param

Index-2117352-D Rev. 00WCP circuit, A-9WCP line, A-3Engine Type parameterHi/fn LZS, A-12WCP circuit, A-11WCP line, A-6engines for hardware compression

117352-D Rev. 00Index-3show hwcomp all command, B-2show hwcomp chip command, B-6show hwcomp errors command, B-5show hwcomp state command, B-3show hwco

117352-D Rev. 00xiTablesTable 1-1. Link Modules Supported by FRE-2-060E Processor with Advanced Compression Coprocessor Daughterboard 1-3Table 2-1. Da

117352-D Rev. 00xiii PrefaceData compression is a routing feature that eliminates redundancy in data streams, reducing the amouont of bandwidth needed

Configuring Data Compression Servicesxiv117352-D Rev. 00Make sure that you are running the latest version of Bay Networks BayRS™ and Site Manager soft

Preface117352-D Rev. 00xv AcronymsThis guide uses the following acronyms:separator ( > ) Shows menu paths. Example: Protocols > IP identifies th

Configuring Data Compression Servicesxvi117352-D Rev. 00Bay Networks Technical PublicationsYou can now print Bay Networks technical manuals and releas

Preface117352-D Rev. 00xvii How to Get HelpFor product assistance, support contracts, information about educational services, and the telephone number

117352-D Rev. 001-1 Chapter 1Starting CompressionThe quickest way to begin using data compression on your network is to enable it with the default con

ii117352-D Rev. 004401 Great America Parkway 8 Federal StreetSanta Clara, CA 95054 Billerica, MA 01821Copyright © 1998 Bay Networks, Inc.All rights re

Configuring Data Compression Services1-2117352-D Rev. 00Summary of Bay Networks Data Compression FeaturesYou can configure both software- and hardware

Starting Compression117352-D Rev. 001-3 • Compression for a BayStack AN platform at 2 x 64 KB/s compressed throughput, full duplex; or 128 KB/s aggreg

Configuring Data Compression Services1-4117352-D Rev. 00The type of data compression you configure depends on the upper layer protocol you want to run

Starting Compression117352-D Rev. 001-5 Configuring Software CompressionSoftware compression works on all router platforms and all serial interfaces.

Configuring Data Compression Services1-6117352-D Rev. 00Enabling Compression for PPPTo configure software compression on a PPP interface, complete the

Starting Compression117352-D Rev. 001-7 4. Click on OK. The Select Protocols window opens.5. Enable data compression for frame relay by choosing WCP.S

Configuring Data Compression Services1-8117352-D Rev. 00Enabling Compression for X.25To enable WCP on an X.25 interface, you must first add an X.25 se

Starting Compression117352-D Rev. 001-9 Configuring Hardware CompressionTo use hardware compression for the BN router, you must have either an octal s

Configuring Data Compression Services1-10117352-D Rev. 00Configuring Compression for a BN (Octal Synchronous Link Module)To configure hardware compres

Starting Compression117352-D Rev. 001-11 Configuring Compression for an ASNTo configure hardware compression for the ASN, complete the following tasks

117352-D Rev. 00 iiiBay Networks, Inc. Software License AgreementNOTICE: Please carefully read this license agreement before copying or using the acc

Configuring Data Compression Services1-12117352-D Rev. 00For More InformationFor detailed information about Bay Networks data compression, see Chapter

117352-D Rev. 002-1 Chapter 2Data Compression OverviewBay Networks data compression services enable you to reduce line costs and improve response time

Configuring Data Compression Services2-2117352-D Rev. 00Bay Networks Compression ServicesBay Networks compression services include:• Software-based co

Data Compression Overview117352-D Rev. 002-3 Data Compression ArchitectureWCP and Hi/fn LZS use different compression algorithms and protocols. The co

Configuring Data Compression Services2-4117352-D Rev. 00Hi/fn LZS AlgorithmHi/fn is a wholly owned subsidiary of Stac, Inc. Bay Networks Hi/fn LZS com

Data Compression Overview117352-D Rev. 002-5 PPP Hi/fn LZS Compression ProtocolPPP uses CCP to negotiate how the router uses the Hi/fn LZS Compression

Configuring Data Compression Services2-6117352-D Rev. 00Hardware Compression for the BNThe BN supports the following compression daughterboards:• AG21

Data Compression Overview117352-D Rev. 002-7 • A 128-contexts compression daughterboard or net module can run compression simultaneously over 127 CPC

Configuring Data Compression Services2-8117352-D Rev. 00How Data Compression WorksTo transmit compressed data, the router must complete one or both of

Data Compression Overview117352-D Rev. 002-9 Figure 2-1. CCP and WCP Initialization on a PPP LinkRouter A Router B1. PPP interface on network; LCP ne

iv 117352-D Rev. 00its own data and information and for maintaining adequate procedures apart from the Software to reconstruct lost or altered files,

Configuring Data Compression Services2-10117352-D Rev. 00CCP NegotiationsCCP allows the two ends of a PPP connection to negotiate whether to use data

Data Compression Overview117352-D Rev. 002-11 Data TransmissionFor PPP links using WCP, Network Control Protocol (NCP) negotiations and WCP negotiatio

Configuring Data Compression Services2-12117352-D Rev. 00PPP MultilinkMultilink provides capabilities beyond those of multiline circuits. Multilink co

Data Compression Overview117352-D Rev. 002-13 PPP Bandwidth-on-DemandBandwidth-on-demand allows a secondary dial-up line to augment a primary leased l

Configuring Data Compression Services2-14117352-D Rev. 00Frame Relay ServicesYou can use software (WCP only) or hardware data compression with frame r

Data Compression Overview117352-D Rev. 002-15 The backup circuit can inherit the primary circuit’s configuration, or it can use its own. When the fram

Configuring Data Compression Services2-16117352-D Rev. 00Adjusting X.25 Max Window SizeWindow size can affect packet throughput across the X.25 networ

117352-D Rev. 003-1 Chapter 3Customizing Data CompressionWhen you enable data compression, default values are in effect for all parameters. This chapt

Configuring Data Compression Services3-2117352-D Rev. 00Allocating Compression Memory for WCPUsing WCP across a network involves allocating memory to

Customizing Data Compression117352-D Rev. 003-3 To specify the compression mode for a circuit, complete the following tasks:Maximizing ThroughputEach

117352-D Rev. 00vContents PrefaceBefore You Begin ...

Configuring Data Compression Services3-4117352-D Rev. 00Table 3-1 lists the amount of memory required for 8 KB and 32 KB history sizes. If you select

Customizing Data Compression117352-D Rev. 003-5 Compression daughterboards reserve one 8 KB context for PPC, as opposed to CPC. There is no limit to t

Configuring Data Compression Services3-6117352-D Rev. 00You can combine 8 KB and 32 KB contexts on one daughterboard or net module. However, if you br

Customizing Data Compression117352-D Rev. 003-7 To modify the history size for a circuit, complete the following tasks:Preventing Data Loss for PPP an

Configuring Data Compression Services3-8117352-D Rev. 00• Number of resetsFor a link with a high number of resets and a low number of dropped packets,

Customizing Data Compression117352-D Rev. 003-9 Customizing Hardware Compression The following issues are specific to hardware compression:• Selecting

Configuring Data Compression Services3-10117352-D Rev. 00To specify hardware or software compression for a line configured with WCP, complete the foll

Customizing Data Compression117352-D Rev. 003-11 To specify hardware or software compression for an interface configured with Hi/fn LZS compression, c

Configuring Data Compression Services3-12117352-D Rev. 00To modify the fallback compression mode for a line configured with WCP, complete the followin

Customizing Data Compression117352-D Rev. 003-13 Changing the Compression Control ProtocolThe PPP interface parameters that you can modify for compres

vi117352-D Rev. 00Compression Control Protocol (CCP) ...2-4Bay Networks WAN Compr

Configuring Data Compression Services3-14117352-D Rev. 00Disabling and Reenabling CompressionYou can disable compression on a line or circuit, then re

Customizing Data Compression117352-D Rev. 003-15 Disabling Hi/fn LZSTo disable or reenable Hi/fn LZS on an interface, complete the following tasks:5.

Configuring Data Compression Services3-16117352-D Rev. 00Deleting Data Compression from a RouterTo delete compression from all circuits on the router,

117352-D Rev. 00A-1 Appendix ASite Manager ParametersThis appendix contains the Site Manager parameter descriptions for data compression services. You

Configuring Data Compression ServicesA-2117352-D Rev. 00The Technician Interface allows you to modify parameters by issuing set and commit commands wi

Site Manager Parameters117352-D Rev. 00A-3 To access the WCP Line Interfaces List window, complete the following tasks:The parameter descriptions foll

Configuring Data Compression ServicesA-4117352-D Rev. 00Parameter: Compression ModePath: Configuration Manager > Protocols > WCP > LinesDefau

Site Manager Parameters117352-D Rev. 00A-5 Parameter: History SizePath: Configuration Manager > Protocols > WCP > LinesDefault: 32KOptions: 3

Configuring Data Compression ServicesA-6117352-D Rev. 00Parameter: Buffer SizePath: Configuration Manager > Protocols > WCP > LinesDefault: N

Site Manager Parameters117352-D Rev. 00A-7 Parameter: Fallback Compression ModePath: Configuration Manager > Protocols > WCP > LinesDefault:

117352-D Rev. 00viiModifying the History Size ...3-6Preventing Data Loss

Configuring Data Compression ServicesA-8117352-D Rev. 00WCP Circuit Interface ParametersThe WCP Circuit Interfaces List window (Figure A-2) contains t

Site Manager Parameters117352-D Rev. 00A-9 The parameter descriptions follow.Parameter: EnablePath: Configuration Manager > Protocols > WCP >

Configuring Data Compression ServicesA-10117352-D Rev. 00Parameter: History SizePath: Configuration Manager > Protocols > WCP > InterfacesDef

Site Manager Parameters117352-D Rev. 00A-11 Hi/fn LZS Interface ParametersThe Hi/fn LZS Interface List window (Figure A-3) contains Hi/fn LZS interfac

Configuring Data Compression ServicesA-12117352-D Rev. 00To access the Hi/fn LZS Interface List window, complete the following tasks:The parameter des

Site Manager Parameters117352-D Rev. 00A-13 Parameter: Fallback Compression ModePath: Configuration Manager > Protocols > Hi/fn LZS > Interfa

Configuring Data Compression ServicesA-14117352-D Rev. 00PPP Interface Parameters for CompressionThe PPP Interface Lists window contains two parameter

Site Manager Parameters117352-D Rev. 00A-15 Parameter: Compression ProtocolPath: Configuration Manager > Protocols > PPP > InterfacesDefault:

117352-D Rev. 00B-1 Appendix BShow Commands for Hardware CompressionThis appendix describes how to use the BCC show command to display information abo

viii117352-D Rev. 00Appendix C Monitoring Software Compression Using the BCC show Commandsshow wcp lines ...

Configuring Data Compression ServicesB-2117352-D Rev. 00show hwcomp allThe BCC show hwcomp all command displays information about active and unused co

Show Commands for Hardware Compression117352-D Rev. 00B-3 show hwcomp stateThe BCC show hwcomp state command displays the status of hardware compressi

Configuring Data Compression ServicesB-4117352-D Rev. 00The output contains the following information: Slot/<Module> For BN routers either: • Th

Show Commands for Hardware Compression117352-D Rev. 00B-5 show hwcomp errorsThe BCC show hwcomp errors command displays information about hardware com

Configuring Data Compression ServicesB-6117352-D Rev. 00show hwcomp chipThe BCC show hwcomp chip command identifies the chip type that is performing h

Show Commands for Hardware Compression117352-D Rev. 00B-7 show wcp hwcomp allThe BCC show wcp hwcomp all command displays information about active and

Configuring Data Compression ServicesB-8117352-D Rev. 00show wcp hwcomp stateThe BCC show wcp hwcomp state command displays the status of hardware com

Show Commands for Hardware Compression117352-D Rev. 00B-9 show wcp hwcomp statsThe BCC show wcp hwcomp stats command displays statistics about hardwar

Configuring Data Compression ServicesB-10117352-D Rev. 00show wcp hwcomp errorsThe BCC show wcp hwcomp errors command displays information about hardw

Show Commands for Hardware Compression117352-D Rev. 00B-11 show hifn hwcomp allThe BCC show hifn hwcomp all command displays information about active

117352-D Rev. 00ixFiguresFigure 2-1. CCP and WCP Initialization on a PPP Link ...2-9Figure A-1. WCP Line In

Configuring Data Compression ServicesB-12117352-D Rev. 00show hifn hwcomp stateThe BCC show hifn hwcomp state command displays the status of hardware

Show Commands for Hardware Compression117352-D Rev. 00B-13 show hifn hwcomp statsThe BCC show hifn hwcomp stats command displays statistics about hard

Configuring Data Compression ServicesB-14117352-D Rev. 00show hifn hwcomp errorsThe BCC show hifn hwcomp errors command displays information about har

117352-D Rev. 00C-1 Appendix CMonitoring Software CompressionUsing the BCC show CommandsThis appendix describes how to use the BCC show command to dis

Configuring Data Compression ServicesC-2117352-D Rev. 00show wcp linesThe show wcp lines command displays information about WCP compression configured

Monitoring Software Compression Using the BCC show Commands117352-D Rev. 00C-3 show wcp vcsThe show wcp vcs command displays information about virtual

Configuring Data Compression ServicesC-4117352-D Rev. 00show wcp stats allThe show wcp stats all command displays statistical information about the pe

Monitoring Software Compression Using the BCC show Commands117352-D Rev. 00C-5 show wcp stats error2The show wcp stats error2 command displays informa

Configuring Data Compression ServicesC-6117352-D Rev. 00show hifn circuitsThe show hifn circuits command displays information about circuits configure

Monitoring Software Compression Using the BCC show Commands117352-D Rev. 00C-7 show hifn stats errorThe show hifn stats error command displays informa