Part No. 114053 Rev. AAugust 1996Router Software Version 11.0Site Manager Software Version 5.0 Configuring SDLC Services

114053 Rev. A xi About This Guide If you configure and manage Synchronous Data Link Control (SDLC) services for Bay Networks routers, refer to this g

Configuring SDLC Servicesxii 114053 Rev. A Conventions This section describes the conventions used in this guide.angle character (>) Separates men

About This Guide 114053 Rev. A xiii LLC logical link controlMAC Media Access ControlMCT1 Multichannel T1NetBIOS Network Basic Input-Output SystemNRZ

114053 Rev. A xv Technical Support and Online Services To ensure comprehensive network support to our customers and partners worldwide, Bay Networks

Configuring SDLC Servicesxvi 114053 Rev. A Bay Networks Customer Service If you purchased your Bay Networks product from a distributor or authorized

Technical Support and Online Services 114053 Rev. A xvii Bay Networks Information Services Bay Networks Information Services provide up-to-date supp

Configuring SDLC Servicesxviii 114053 Rev. A Support Source CD This CD-ROM -- sent quarterly to all contracted customers -- is a complete Bay Network

Technical Support and Online Services 114053 Rev. A xix InfoFACTS InfoFACTS is the Bay Networks free 24-hour fax-on-demand service. This automated s

ii 114053 Rev. A4401 Great America Parkway 8 Federal StreetSanta Clara, CA 95054 Billerica, MA 01821 Copyright © 1988–1996 Bay Networks, Inc. All rig

114053 Rev. A 1-1 Chapter 1Synchronous Data Link Control Overview This chapter describes the following Synchronous Data Link Control (SDLC) features

Configuring SDLC Services1-2 114053 Rev. A SDLC supports point-to-point and multipoint topologies. In point-to-point topologies, only one SDLC device

Synchronous Data Link Control Overview 114053 Rev. A 1-3 Figure 1-1 illustrates DLSw single and dual switch networks where Bay Networks routers perf

Configuring SDLC Services1-4 114053 Rev. A Secondary SDLC Support A Bay Networks router acting as a secondary device on an SDLC link can• Support a s

Synchronous Data Link Control Overview 114053 Rev. A 1-5 Figure 1-2. Secondary SDLC Routers in (a) Single and (b) Dual Switch DLSw NetworksFront-end

Configuring SDLC Services1-6 114053 Rev. A Secondary SDLC Limitations Bay Networks routers configured as secondary SDLC link stations function as PU 2

Synchronous Data Link Control Overview 114053 Rev. A 1-7 Figure 1-3. Locally Acknowledged Synchronous Pass-through in (a) Single and (b) Dual Switch

Configuring SDLC Services1-8 114053 Rev. A Transmission Capabilities SDLC supports full- and half-duplex transmissions over leased lines. Full-duplex

Synchronous Data Link Control Overview114053 Rev. A 1-9 Each frame begins with a one-byte flag that alerts the receiver to the frame’s presence.The add

114053 Rev. A iii Bay Networks Software License This Software License shall govern the licensing of all software provided to licensee by Bay Networ

Configuring SDLC Services1-10 114053 Rev. A• Systems Network Architecture, APPN Architecture Reference (SC30-3422-3)• APPN Architecture and Product Im

114053 Rev. A 2-1 Chapter 2SDLC Implementation NotesKeep the following implementation notes in mind when you configure SDLC services.Link StationsWith

Configuring SDLC Services2-2 114053 Rev. AChapter 3 describes how to complete the SDLC Line Parameters. To view or change synchronous line parameters

114053 Rev. A 3-1 Chapter 3Enabling SDLC ServicesThis chapter describes how to enable SDLC services. It assumes you have read Configuring Routers and 1

Configuring SDLC Services3-2 114053 Rev. AFigure 3-1. SDLC Line Parameters Window2.Configure the parameters. Refer to the parameter descriptions in thi

Enabling SDLC Services114053 Rev. A 3-3 4.Select either DLSw or APPN to run on the SDLC circuit.Site Manager then displays the appropriate windows fro

Configuring SDLC Services3-4 114053 Rev. A Parameter: Internal Clock Speed Default: 19200 KB Options: 1200 B | 2400 B | 4800 B | 7200 B | 9600 B | 19

Enabling SDLC Services114053 Rev. A 3-5 Parameter: Sync Line Coding Default: NRZ Options: NRZ | NRZI | NRZI Mark Function: Sets the same line coding

114053 Rev. A 4-1 Chapter 4Editing SDLC ParametersUse the Configuration Manager to access, configure, and edit SDLC • Global parameters• Interface param

iv 114053 Rev. A Bay Networks Software License (continued) 9. Licensee shall not reverse assemble, reverse compile, or in any way reverse engineer

Configuring SDLC Services4-2 114053 Rev. AThe Technician Interface lets you modify parameters by issuing set and commit commands with the MIB object I

Editing SDLC Parameters114053 Rev. A 4-3 Editing SDLC Global ParametersSDLC has only one configurable parameter (Enable) visible at the global level. T

Configuring SDLC Services4-4 114053 Rev. A Parameter: Enable Default: Enable Options: Enable | Disable Function: Enables or disables the system softwa

Editing SDLC Parameters114053 Rev. A 4-5 Figure 4-3. SDLC Interface Configuration Window2.Select the interface you want to customize. The parameter val

Configuring SDLC Services4-6 114053 Rev. ASDLC Interface Parameter DescriptionsUse the following parameter descriptions to edit SDLC interface paramet

Editing SDLC Parameters114053 Rev. A 4-7 Parameter: Link Station Role Default: PRIMARY for DLSw networks; NEGOTIATE for APPN networks Options: PRIMAR

Configuring SDLC Services4-8 114053 Rev. A Parameter: Max Frame Retransmit Count Default: 5 Range: 1 through 7 Function: Specifies the maximum number o

Editing SDLC Parameters114053 Rev. A 4-9 Parameter: Idle Line Timer Default: 6000 milliseconds Range: 1 through 65535 Function: Specifies the overall

Configuring SDLC Services4-10 114053 Rev. A Parameter: Port Write Timer Default: 3000 milliseconds Range: 1 through 65535 Function: Specifies the maxim

Editing SDLC Parameters114053 Rev. A 4-11 Parameter: Link Connection Retry Limit Default: 10 Range: 1 through 65535 Function: Specifies the number of

114053 Rev. A v Contents Configuring SDLC Services About This Guide Audience ...

Configuring SDLC Services4-12 114053 Rev. A Parameter: Enable Reject Frame Default: TRUE Options: TRUE | FALSE Function: Specifies whether SDLC can sen

Editing SDLC Parameters114053 Rev. A 4-13 Parameter: Total Link Station Limit Default: 16 Range: 1 through 254 Function: Specifies the total link stat

Configuring SDLC Services4-14 114053 Rev. A Parameter: Receive Buffer Pool Size Default: 7 Range: 1 through 255 Function: Sets the receive buffer poo

Editing SDLC Parameters114053 Rev. A 4-15 Deleting an SDLC InterfaceTo delete an SDLC interface from its associated physical circuit:1. In the SDLC In

Configuring SDLC Services4-16 114053 Rev. AFigure 4-4. SDLC Link Station Configuration Window 2.Click on Add. A window prompts you for the address of t

Editing SDLC Parameters114053 Rev. A 4-17 Figure 4-5. Link Station Configuration Window 3.Enter the link station address. Refer to the parameter descri

Configuring SDLC Services4-18 114053 Rev. A Parameter: Link Station Address (hex) Default: None Options: Any valid hexadecimal link station address fr

Editing SDLC Parameters114053 Rev. A 4-19 SDLC Link Station Parameter DescriptionsUse the following descriptions as guidelines when you configure the p

Configuring SDLC Services4-20 114053 Rev. A Parameter: Group Address Default: 0 for APPN; None for DLSw Range: 0 through 254 Function: Specifies the ad

Editing SDLC Parameters114053 Rev. A 4-21 Parameter: MAXIN Default: 7 Range: 1 through 127 Function: Controls the maximum number of unacknowledged fr

vi 114053 Rev. A SDLC Support over MCT1 Links ...1-8Physical Connections

Configuring SDLC Services4-22 114053 Rev. A Parameter: RNR Retry Limit Default: 4 Range: 1 through 64000 Function: Used with the RNR Timer parameter t

Editing SDLC Parameters114053 Rev. A 4-23 Parameter: REPLYTO Retry Limit Default: 10 Range: 1 through 64000 Function: Controls the number of times an

Configuring SDLC Services4-24 114053 Rev. A Parameter: Slow Poll Timer Default: 1000 milliseconds Range: 1 through 64000 Function: Allows polling to c

Editing SDLC Parameters114053 Rev. A 4-25 Parameter: Pre-Activation Contact Frame Default: XID Options: XID | DISC | SNRM | SNRME | TEST Function: Sp

Configuring SDLC Services4-26 114053 Rev. A Parameter: Fast Contact Timer Default: 4000 milliseconds Range: 1 through 64000 Function: Controls the tim

Editing SDLC Parameters114053 Rev. A 4-27 Parameter: Slow Contact Retry Limit Default: 8 Range: 1 through 65535 Function: Controls the number of time

Configuring SDLC Services4-28 114053 Rev. A Parameter: Poll Bit Set In I-Frame Default: TRUE Options: TRUE | FALSE Function: Specifies whether this li

114053 Rev. A A-1 Appendix ASDLC Default Parameter SettingsTables A-1 through A-3 give the default settings for SDLC parameters. Use the Configuration

Configuring SDLC ServicesA-2 114053 Rev. ATable A-2. SDLC Interface Parameters ParameterDefault Setting with APPNDefault Setting with DLSwEnable Enabl

SDLC Default Parameter Settings114053 Rev. A A-3 Receive Buffer Pool Size 7 7Initial Flow Control Credit 7 7Enable Stats Collection True TrueTable A-3

114053 Rev. A vii Figures Figure 1-1. Primary SDLC Routers in (a) Single and (b) Dual Switch DLSw Networks ...

Configuring SDLC ServicesA-4 114053 Rev. ASlow Poll Timer 1000 ms 1000 msSlow Poll Count Limit 65535 65535Pre-Activation Contact Frame XID XIDFast Co

114053 Rev. A Index-1 Aadding SDLC link stations, 4-15address field in SDLC frames, 1-8APPNlink station types allowed, 2-1using with SDLC, 1-9BBay Netw

Configuring SDLC ServicesIndex-2 114053 Rev. Aframe formats, 1-8frame-checking field in SDLC frames, 1-8full-duplex transmission, 1-8configuring, 4-11Gg

Index114053 Rev. A Index-3 Port Write Timer parameter, 4-10Pre-Activation Contact Frame parameter, 4-25Primary Full Duplex parameter, 4-11primary link

114053 Rev. A ix Tables Table A-1. SDLC Line Parameters ................... A-1Table A-2. SDL