Avaya Configuring Data Compression Services Manual do Utilizador

BayRS Version 14.00Part No. 308616-14.00 Rev 00September 19994401 Great America ParkwaySanta Clara, CA 95054Configuring Data Compression Services

Configuring Data Compression ServicesC-4308616-14.00 Rev 00show wcp stats allThe show wcp stats all command displays statistical information about the

Monitoring Software Compression Using the BCC show Command308616-14.00 Rev 00C-5 show wcp stats error1The show wcp stats error1 command displays infor

Configuring Data Compression ServicesC-6308616-14.00 Rev 00show hifn circuitsThe show hifn circuits command displays information about circuits config

Monitoring Software Compression Using the BCC show Command308616-14.00 Rev 00C-7 show hifn stats errorThe show hifn stats error command displays infor

308616-14.00 Rev 00Index-1Aacronyms, xvBBCC show commandshardware compression, B-1software compression, C-1buffer sizedefined, 3-8modifying, 3-9Buffer

Index-2308616-14.00 Rev 00frame relay, 2-14PPP, 2-13disablingHi/fn LZS, 3-17wcp, 3-16EEnable parameterHi/fn LZS, A-12WCP circuit, A-9WCP line, A-3enab

308616-14.00 Rev 00Index-3preventing data loss, 3-8product support, xviipublicationshard copy, xviSshow commandshardware compression, B-1software comp

308616-14.00 Rev 00xiTablesTable 1-1. Link Modules Supported by FRE-2-060E Processor with Advanced Compression Coprocessor Daughterboard ...

308616-14.00 Rev 00xiii PrefaceData compression is a routing feature that eliminates redundancy in data streams, reducing the amount of bandwidth need

Configuring Data Compression Servicesxiv308616-14.00 Rev 00Text ConventionsThis guide uses the following text conventions:angle brackets (< >) I

Preface308616-14.00 Rev 00xv AcronymsThis guide uses the following acronyms:separator ( > ) Shows menu paths. Example: Protocols > IP identifies

Configuring Data Compression Servicesxvi308616-14.00 Rev 00Hard-Copy Technical ManualsYou can print selected technical manuals and release notes free,

Preface308616-14.00 Rev 00xvii How to Get HelpIf you purchased a service contract for your Nortel Networks product from a distributor or authorized re

308616-14.00 Rev 001-1 Chapter 1Starting CompressionThe quickest way to begin using data compression on your network is to enable it with the default

ii308616-14.00 Rev 00 Copyright © 1999 Nortel NetworksAll rights reserved. Printed in the USA. September 1999.The information in this document is subj

Configuring Data Compression Services1-2308616-14.00 Rev 00Summary of Nortel Networks Data Compression FeaturesYou can configure both software- and ha

Starting Compression308616-14.00 Rev 001-3 • Compression for a BayStack AN platform at 2 x 64 KB/s compressed throughput, full duplex; or 128 KB/s agg

Configuring Data Compression Services1-4308616-14.00 Rev 00The type of data compression you configure depends on the upper-layer protocol you want to

Starting Compression308616-14.00 Rev 001-5 Configuring Software CompressionSoftware compression works on all router platforms and all serial interface

Configuring Data Compression Services1-6308616-14.00 Rev 00For information on configuring PPP, see Configuring PPP Services. Adding WCP to PPP over a

Starting Compression308616-14.00 Rev 001-7 For example:box# demand-pool 1demand-pool/1# demand-line serial/5/1demand-line/1/serial/5/1# backdemand-poo

Configuring Data Compression Services1-8308616-14.00 Rev 00For example:box# serial 2/1serial/2/1# pppppp/2/1# ip 1.1.1.1/24ip/1.1.1.1/255.255.255.0# c

Starting Compression308616-14.00 Rev 001-9 Adding WCP to Default Frame Relay over a BRI Leased LineTo add WCP compression to default frame relay servi

Configuring Data Compression Services1-10308616-14.00 Rev 00Using Site ManagerTo use Site Manager to configure this interface for compression for PPP,

Starting Compression308616-14.00 Rev 001-11 Enabling Compression for Frame RelayTo configure software compression on a frame relay interface, complete

308616-14.00 Rev 00iiiNortel Networks NA Inc. Software License AgreementNOTICE: Please carefully read this license agreement before copying or using t

Configuring Data Compression Services1-12308616-14.00 Rev 00Enabling Compression for X.25To enable WCP on an X.25 interface, you must first add an X.2

Starting Compression308616-14.00 Rev 001-13 Configuring Hardware CompressionTo use hardware compression for the BN router, you must have either an oct

Configuring Data Compression Services1-14308616-14.00 Rev 00Configuring Compression for a BN (Octal Synchronous Link Module)To configure hardware comp

Starting Compression308616-14.00 Rev 001-15 Configuring Compression for an ASNTo configure hardware compression for the ASN, complete the following ta

Configuring Data Compression Services1-16308616-14.00 Rev 00For More InformationFor detailed information about Nortel Networks data compression, see C

308616-14.00 Rev 002-1 Chapter 2Data Compression OverviewNortel Networks data compression services enable you to reduce line costs and improve respons

Configuring Data Compression Services2-2308616-14.00 Rev 00Nortel Networks Compression ServicesNortel Networks compression services include:• Software

Data Compression Overview308616-14.00 Rev 002-3 Data Compression ArchitectureWCP and Hi/fn LZS use different compression algorithms and protocols. The

Configuring Data Compression Services2-4308616-14.00 Rev 00Hi/fn LZS AlgorithmHi/fn is a wholly owned subsidiary of Stac, Inc. Nortel Networks Hi/fn L

Data Compression Overview308616-14.00 Rev 002-5 PPP Hi/fn LZS Compression ProtocolPPP uses CCP to negotiate how the router uses the Hi/fn LZS Compress

iv308616-14.00 Rev 004. Limitation of liability. IN NO EVENT WILL NORTEL NETWORKS OR ITS LICENSORS BE LIABLE FOR ANY COST OF SUBSTITUTE PROCUREMENT;

Configuring Data Compression Services2-6308616-14.00 Rev 00Hardware Compression for the BNThe BN supports the following compression daughterboards:• A

Data Compression Overview308616-14.00 Rev 002-7 • A 128-contexts compression daughterboard or net module can run compression simultaneously over 127 C

Configuring Data Compression Services2-8308616-14.00 Rev 00How Data Compression WorksTo transmit compressed data, the router must complete one or both

Data Compression Overview308616-14.00 Rev 002-9 Figure 2-1. CCP and WCP Initialization on a PPP LinkRouter A Router B1. PPP interface on network; LCP

Configuring Data Compression Services2-10308616-14.00 Rev 00CCP NegotiationsCCP allows the two ends of a PPP connection to negotiate whether to use da

Data Compression Overview308616-14.00 Rev 002-11 Data TransmissionFor PPP links using WCP, Network Control Protocol (NCP) negotiations and WCP negotia

Configuring Data Compression Services2-12308616-14.00 Rev 00For more information about Nortel Networks multiline, see Configuring WAN Line Services.PP

Data Compression Overview308616-14.00 Rev 002-13 PPP Dial-on-DemandDial-on-demand service enables you to establish a circuit only when you want to tra

Configuring Data Compression Services2-14308616-14.00 Rev 00When you enable data compression for frame relay on a hybrid circuit, both the bridged and

Data Compression Overview308616-14.00 Rev 002-15 X.25 ServicesAn X.25 network permits as many as 128 VCs to exist on the same physical link at the sam

308616-14.00 Rev 00vContents PrefaceBefore You Begin ...

308616-14.00 Rev 003-1 Chapter 3Customizing Data CompressionWhen you enable data compression, default values are in effect for all parameters. This ch

Configuring Data Compression Services3-2308616-14.00 Rev 00Allocating Compression Memory for WCPUsing WCP across a network involves allocating memory

Customizing Data Compression308616-14.00 Rev 003-3 Using Site ManagerTo specify the compression mode for a line, complete the following tasks:To speci

Configuring Data Compression Services3-4308616-14.00 Rev 00Maximizing ThroughputEach side of the link has both a compression and decompression history

Customizing Data Compression308616-14.00 Rev 003-5 History Size with Hardware CompressionHardware compression daughterboards and net modules are avail

Configuring Data Compression Services3-6308616-14.00 Rev 00Table 3-3 shows the maximum number of 32 KB contexts each daughterboard or net module can s

Customizing Data Compression308616-14.00 Rev 003-7 Using Site ManagerTo modify the history size for a line, complete the following tasks:To modify the

Configuring Data Compression Services3-8308616-14.00 Rev 00Preventing Data Loss for PPP and Frame RelayBuffer size is the amount of memory allocated t

Customizing Data Compression308616-14.00 Rev 003-9 Using Site ManagerTo modify the buffer size, complete the following tasks:Customizing Hardware Comp

vi308616-14.00 Rev 00Chapter 2 Data Compression OverviewNortel Networks Compression Services ...

Configuring Data Compression Services3-10308616-14.00 Rev 00Selecting Software or Hardware CompressionWhen you configure a VC for compression, the def

Customizing Data Compression308616-14.00 Rev 003-11 Using Site ManagerTo specify hardware or software compression for a line configured with WCP, comp

Configuring Data Compression Services3-12308616-14.00 Rev 00To specify hardware or software compression for an interface configured with Hi/fn LZS com

Customizing Data Compression308616-14.00 Rev 003-13 Using the BCCTo modify the fallback compression mode, navigate to the appropriate prompt (for exam

Configuring Data Compression Services3-14308616-14.00 Rev 00To modify the fallback compression mode for a Hi/fn LZS interface, complete the following

Customizing Data Compression308616-14.00 Rev 003-15 Using the BCCTo change the CCP Type, navigate to the ppp prompt (for example, box; serial 2/1; ppp

Configuring Data Compression Services3-16308616-14.00 Rev 00Disabling and Reenabling CompressionYou can disable compression on a line or circuit, and

Customizing Data Compression308616-14.00 Rev 003-17 To disable or reenable WCP on a circuit, complete the following tasks:Disabling and Reenabling Hi/

Configuring Data Compression Services3-18308616-14.00 Rev 00Deleting Data Compression from a RouterTo delete compression from all circuits on the rout

308616-14.00 Rev 00A-1 Appendix ASite Manager ParametersThis appendix contains the Site Manager parameter descriptions for data compression services.

308616-14.00 Rev 00viiMaximizing the Compression Ratio ...3-2Maximizing Through

Configuring Data Compression ServicesA-2308616-14.00 Rev 00The Technician Interface allows you to modify parameters by issuing set and commit commands

Site Manager Parameters308616-14.00 Rev 00A-3 To access the WCP Line Interfaces List window, complete the following tasks:The parameter descriptions f

Configuring Data Compression ServicesA-4308616-14.00 Rev 00Parameter: Compression ModePath: Configuration Manager > Protocols > WCP > LinesDe

Site Manager Parameters308616-14.00 Rev 00A-5 Parameter: History SizePath: Configuration Manager > Protocols > WCP > LinesDefault: 32KOptions

Configuring Data Compression ServicesA-6308616-14.00 Rev 00Parameter: Buffer SizePath: Configuration Manager > Protocols > WCP > LinesDefault

Site Manager Parameters308616-14.00 Rev 00A-7 Parameter: Fallback Compression ModePath: Configuration Manager > Protocols > WCP > LinesDefaul

Configuring Data Compression ServicesA-8308616-14.00 Rev 00WCP Circuit Interface ParametersThe WCP Circuit Interfaces List window (Figure A-2) contain

Site Manager Parameters308616-14.00 Rev 00A-9 The parameter descriptions follow:Parameter: EnablePath: Configuration Manager > Protocols > WCP &

Configuring Data Compression ServicesA-10308616-14.00 Rev 00Parameter: History SizePath: Configuration Manager > Protocols > WCP > Interfaces

Site Manager Parameters308616-14.00 Rev 00A-11 Hi/fn LZS Interface ParametersThe Hi/fn LZS Interface List window (Figure A-3) contains Hi/fn LZS inter

viii308616-14.00 Rev 00show hifn hwcomp state ... B-10show hifn

Configuring Data Compression ServicesA-12308616-14.00 Rev 00To access the Hi/fn LZS Interface List window, complete the following tasks:The parameter

Site Manager Parameters308616-14.00 Rev 00A-13 Parameter: Fallback Compression ModePath: Configuration Manager > Protocols > Hi/fn LZS > Inte

Configuring Data Compression ServicesA-14308616-14.00 Rev 00PPP Interface Parameters for CompressionThe PPP Interface Lists window contains two parame

Site Manager Parameters308616-14.00 Rev 00A-15 Parameter: Compression ProtocolPath: Configuration Manager > Protocols > PPP > InterfacesDefau

308616-14.00 Rev 00B-1 Appendix BMonitoring Hardware CompressionUsing the BCC show CommandThis appendix describes how to use the BCC show command to d

Configuring Data Compression ServicesB-2308616-14.00 Rev 00Online Help for show CommandsTo display a list of command options, enter one of these comma

Monitoring Hardware Compression Using the BCC show Command308616-14.00 Rev 00B-3 show hwcomp stateThe show hwcomp state command displays the status of

Configuring Data Compression ServicesB-4308616-14.00 Rev 00show hwcomp statsThe show hwcomp stats command displays statistics about hardware compressi

Monitoring Hardware Compression Using the BCC show Command308616-14.00 Rev 00B-5 show hwcomp errorsThe show hwcomp errors command displays information

308616-14.00 Rev 00ixFiguresFigure 2-1. CCP and WCP Initialization on a PPP Link ...2-9Figure A-1. WCP Line

Configuring Data Compression ServicesB-6308616-14.00 Rev 00show wcp hwcomp allThe show wcp hwcomp all command displays information about active and un

Monitoring Hardware Compression Using the BCC show Command308616-14.00 Rev 00B-7 show wcp hwcomp stateThe show wcp hwcomp state command displays the s

Configuring Data Compression ServicesB-8308616-14.00 Rev 00show wcp hwcomp statsThe show wcp hwcomp stats command displays statistics about hardware c

Monitoring Hardware Compression Using the BCC show Command308616-14.00 Rev 00B-9 show hifn hwcomp allThe show hifn hwcomp all command displays informa

Configuring Data Compression ServicesB-10308616-14.00 Rev 00show hifn hwcomp stateThe show hifn hwcomp state command displays the status of hardware c

Monitoring Hardware Compression Using the BCC show Command308616-14.00 Rev 00B-11 show hifn hwcomp statsThe show hifn hwcomp stats command displays st

Configuring Data Compression ServicesB-12308616-14.00 Rev 00show hifn hwcomp errorsThe show hifn hwcomp errors command displays information about hard

308616-14.00 Rev 00C-1 Appendix CMonitoring Software CompressionUsing the BCC show CommandThis appendix describes how to use the BCC show command to d

Configuring Data Compression ServicesC-2308616-14.00 Rev 00Online Help for show CommandsTo display a list of command options, enter one of these comma

Monitoring Software Compression Using the BCC show Command308616-14.00 Rev 00C-3 show wcp circuitsThe show wcp circuits command displays information a