Avaya Configuring Data Compression Services Manuale Utente

Configuring Data CompressionServices Router Software Version 10.0Site Manager Software Version 4.0Software Version BNX 6.0Site Manager Software Vers

xi Tables Table 1-1. Hardware Compression — 8 KB Contexts ...1-9Table 1-2. Hardware Compression — 32 KB C

xiii About This Guide If you are responsible for configuring and managing Bay Networks™ routersand/ or BNX™ switching platforms running over Frame Rel

Configuring Data Compression Servicesxiv • The ARE ATM Suite provides RFC 1483 and 1577 compliance, ATM UNI 3.0 signaling, in addition to the LAN S

About This Guidexv To purchase any of these support programs, including PhonePlus™ for 24-hour telephone technical support, call 1-800-2LANWAN. Outsi

Configuring Data Compression Servicesxvi To open an account and receive a local dial-up number, call CompuServe at 1-800-524-3388 and ask for Represe

About This Guidexvii How to Get Help For additional information or advice, contact the Bay Networks Technical Response Center in your area:United Sta

Configuring Data Compression Servicesxviii Ordering Bay Networks Publications To purchase additional copies of this document or other Bay Networks pu

1-1 Chapter 1Data Compression Overview Bay Networks data compression services enable you to reduce line costs and improve response times over wide ar

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Configuring Data Compression Services1-2 Data Compression Architecture Bay Networks uses the following algorithm and protocols to provide data compre

Data Compression Overview1-3 Data Compression Performance The goals in using data compression are to achieve a high compression ratio while maximiz

Configuring Data Compression Services1-4 Hardware Compression Contexts A context refers to compression and decompression for a single VC. Compressi

Data Compression Overview1-5 Figure 1-1. CCP, WCP, and NCP Initialization on a PPP LinkRouter A Router B1. PPP interface on network; LCP negotiation

Configuring Data Compression Services1-6 CCP Negotiations CCP allows the two ends of a PPP connection to negotiate whether to use data compression, a

Data Compression Overview1-7 Data Compression Parameters The following sections describe data compression parameters, and give information about dec

Configuring Data Compression Services1-8 8 KB History Size In general, 8 KB histories are appropriate for Frame Relay and X.25, when you have large n

Data Compression Overview1-9Thirty-one CPC contexts each using an 8 KB history are possible on the 32 context board, and 127 contexts each using an 8

Configuring Data Compression Services1-10Buffer SizeBuffer size is the amount of memory allocated to keep the transmission history. You must configure

Data Compression Overview1-11Fallback Compression ModeThis parameter is for hardware compression, and is configurable on a line basis only. Use it to i

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2-1Chapter 2Implementation NotesThis chapter describes special features of Bay Networks data compression.Bay Networks Data Compression FeaturesOur dat

Configuring Data Compression Services2-2Compression Features for Specific ProtocolsBay Networks data compression services vary in some details accordin

Implementation Notes2-3PPP ServicesYou can use software or hardware data compression on all PPP circuits, including multiline and multilink, bandwidth

Configuring Data Compression Services2-4Dial BackupPPP also allows you to configure a dial backup feature. If a primary PPP line fails and you have ena

3-1Chapter 3Enabling Data Compression ServicesThis chapter describes how to enable data compression services. It assumes you have read Configuring Rout

Configuring Data Compression Services3-2Figure 3-1. Select Protocols Window1.Scroll through the list to select WCP, (Bay Networks proprietary compress

4-1Chapter 4Editing Data Compression ParametersThis chapter provides information about customizing data compression parameters for the Frame Relay, X.

Configuring Data Compression Services4-2Figure 4-1. Configuration Manager WindowConfiguring Data Compression for Frame Relay You can use either hardware

Editing Data Compression Parameters4-3Hybrid AccessIf you configure Frame Relay in Group access mode and then add a PVC in Hybrid mode, the configuratio

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Configuring Data Compression Services4-4Editing WCP Line ParametersTo edit WCP line parameters, begin at the Configuration Manager window (refer to Fig

Editing Data Compression Parameters4-54. Click on Apply to implement your changes. 5. Repeat Steps 2 through 4 for each parameter you want to edit.6.

Configuring Data Compression Services4-6 Parameter: History Size Default: 32 K for software compression; 8 K for hardware compression Options: 32 K |

Editing Data Compression Parameters4-7 Parameter: Buffer Size Default: Normal Options: Very Large | Large | Normal | None Function: Indicates the amou

Configuring Data Compression Services4-8 Parameter: Fallback Compression Mode Default: Software CPC Options: Software CPC | Hardware PPC Function: Thi

Editing Data Compression Parameters4-9Editing WCP Circuit Interface ParametersTo edit WCP circuit interface parameters, begin at the Configuration Mana

Configuring Data Compression Services4-10WCP Interface Parameter DescriptionsUse the following descriptions as guidelines when you configure the WCP in

Editing Data Compression Parameters4-11 Parameter: History Size Default: Inherit from Line Options: 32 K | 8 K | Inherit from Line Function: Indicates

Configuring Data Compression Services4-12 Parameter: Engine Type Default: Inherit from Line Options: Software | Hardware | Inherit from Line Function:

A-13Appendix AParameter Default SettingsTables A-1 and A-2 list WCP line and circuit interface parameters and their default values. See Chapter 4 for

v Contents About This Guide Software Suites ...

Index-1Bbandwidth-on-demand, 2-3buffer size, 1-10Buffer Size parameter, 4-3line, 4-7CCCP, 1-2circuit interface parameters, 4-9 to 4-12Compression Cont

Index-2Hhardware compression, 1-3, 2-1header compression, 2-1history buffer, 1-2history size, 1-7History Size parametercircuit interface, 4-11line, 4-

vi8 KB History Size ...1-832 KB History Size ...

viiConfiguring Data Compression for PPP ...4-3Editing WCP Line Parameters ...

ix Figures Figure 1-1. CCP, WCP, and NCP Initialization on a PPP Link .........1-5Figure 3-1. Select Protocols Window ...