Emulex DCP-link User Manual

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DCP_link

Multi-Protocol Router

Advanced Configuration Guide

PT1054605-00, Rev A

December 1995

Information contained in this document is believed to be accurate and reliable. However, Emulex Corporation assumes no responsibility for its use nor for any infringements of patents or other rights of third parties which may result from its use. Emulex Corporation reserves the right to change product specifications at any time without notice.

The following trademarks of Emulex Corporation are used in this document: Emulex, DCP-286i-SBC, DCP-386i, DCP 486e, DCP_link, DCPx86i/e All other products mentioned are the trademarks of their respective companies.

FCC Statement (USA)

This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. Any changes or modifications not expressly approved by Emulex could void the user’s authority to operate this equipment. Shielded cables must be used between this equipment and attached peripheral devices.

DOC Statement (Canada)

Cet equipment ne depasse pas les limites de Classe A d’emission de bruits radioelectriques pour les appareils numeriques telles que perscrites par let Reglement sur le brouillage radioelectrique etabli par le ministere des Communications du Canada. L’exploitation faite en milieu residentiel peut entrainer le brouillage des receptions radio et television, ce qui obligerait le proprietaire ou l’operateur a prendre les dispositions necessaires pour en eliminer les causes.

This equipment does not exceed Class A limits for radio noise emissions for digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. Operation in a residential area may cause unacceptable interference to radio and TV reception requiring the owner or operator to take whatever steps are necessary to correct the interference.

Emulex Corporation 3535 Harbor Boulevard Costa Mesa, California 92626

Printed in U.S.A.

Table of Contents

Preface

Product Support.................................................................................... i

Audience .................................................................................... i

User Guide Conventions...................................................................... ii

Related Documentation ......................................................................iii

Chapter 1 Introduction

Emulex DCP_link............................................................................. 1-2

Hardware Requirements...........................................................1-3

Software Requirements ............................................................ 1-3

Chapter 2 Hardware Configuration

Factory Default Settings...................................................................2-2

Base I/O Address......................................................................2-3

Host Interrupt Level (IRQ Settings)......................................... 2-5

DCPx86i/e Adapter Configuration...................................................2-6

DCP286i-SBC Configuration........................................................... 2-6

Jumper Settings ........................................................................2-6

Software Compatibility Level............................................ 2-7

Control Register 4 Read Option......................................... 2-8

Window Group Select........................................................ 2-8

Memory Size......................................................................2-8

Setting Data Clock Direction (DTE or DCE)........................... 2-9

DCP386i Configuration..................................................................2-11

Jumper Settings ......................................................................2-11

PC I/O Channel Check..................................................... 2-12

Window Group Select...................................................... 2-12

DCP486e Configuration.................................................................2-14

Jumper Settings ......................................................................2-14

Window Group Select...................................................... 2-14

DCP386i/486e Daughterboard Settings..........................................2-16

8-Port RS-232 Daughterboard................................................2-16

Setting DTE or DCE Operation....................................... 2-16

8-Port RS-422/X.21 Daughterboard.......................................2-18

Setting DTE or DCE Operation....................................... 2-18

Table of Contents ii

Chapter 3 Installation and Cabling

Installing the Emulex Adapter ..........................................................3-3

Cabling Connections.........................................................................3-4

Factory Default Settings....................................................................3-4

DCP286i-SBC Adapter Cables.................................................3-4

DCP386i/DCP486e Daughterboard Cabling ............................3-4

RS-232 Cabling..................................................................3-4

RS-422/X.21 Cabling.........................................................3-5

Optional Cable Drawings..................................................................3-6

Loopback Plug Options ............................................................3-6

RS-232/EIA-530 Loopback Plug .......................................3-6

V.35 Loopback Plug Winchester Male ..............................3-7

X.21 Loopback Plug DB15F..............................................3-8

DCP286i-SBC Adapter Cables.........................................................3-9

RS-232 Cable Assembly ....................................................3-9

RS-422/530 Cable Assembly ...........................................3-10

RS-423 Cable Assembly ..................................................3-11

RS-485 Cable Assembly ..................................................3-12

V.35 Cable Assembly.......................................................3-13

X.21 Cable Assembly.......................................................3-14

RS-232 Standard Cable....................................................3-15

RS-232 Null-Modem Cable (Crossover) ..........................3-16

RS-423/RS-485 Null Modem Cable.................................3-17

V.35 Null Modem Cable..................................................3-18

X.21 Null Modem Cable..................................................3-19

DCP 386i/486e Daughterboard Cabling................................. 3-20

RS-232 Cabling................................................................3-20

RS-232 Standard Cable .........................................3-21

RS-232 Null-Modem Cable (Crossover)...............3-22

RS-232 Three-Wire Port Cable .............................3-22

RS-422 Cabling................................................................3-21

RS-422 Standard Cable .........................................3-24

X.21 Adapter Cable...............................................3-25

RS-422 Null-Modem Cable...................................3-26

Troubleshooting..............................................................................3-27

Table of Contents iii

Chapter 4 Software Installation

Software Installation Procedure........................................................4-2

Installing to Novell NetWare version 3.12 ............................... 4-2

Installing to Novell NetWare version 4.1 ................................. 4-4

Uninstall Procedures......................................................................... 4-6

Uninstall using NetWare version 3.12......................................4-6

Uninstall using NetWare version 4.1........................................4-8

Chapter 5 Software Configuration

INETCFG ................................................................................5-2

INETCFG Menus..................................................................... 5-2

Using Context Sensitive Help .................................................. 5-4

Configuring with INETCFG............................................................. 5-5

Chapter 6 Frame Relay Configuration

Introduction ................................................................................ 6-2

Frame Relay Networks............................................................. 6-2

Frame Relay Parameters........................................................... 6-3

Diagramming Your Frame Relay Network.............................. 6-4

Planning Your Frame Relay Network...................................... 6-4

Configuring the Network Interface...................................................6-6

Configuring the WAN Call Directory............................................ 6-10

Network Protocol and Binding Configuration................................6-13

Configuring Protocol Parameters........................................... 6-13

Binding Network Protocols to a WAN Interface ................... 6-14

Table of Contents iv

Chapter 7 X.25 Configuration

Introduction .................................................................................7-2

Virtual Circuit Service..............................................................7-3

Logical Channel Numbers ........................................................7-4

Diagramming Your X.25 Network ...........................................7-5

Planning Your X.25 Network...................................................7-5

Frame Level Parameters.....................................................7-5

Packet Level Parameters.....................................................7-6

Logical Channel Numbers ........................................................7-8

Emulex X.25 User Facilities.....................................................7-9

Configuring the X.25 Network Interface........................................7-11

Modifying/Creating A Profile.................................................7-13

Local DTE Address.................................................................7-15

X.25 Authentication Options..................................................7-15

Configuring the WAN Call Directory .............................................7-17

Expert Call Configuration.......................................................7-22

Network Protocol and Binding Configuration................................7-24

Configuring Protocol Parameters............................................7-24

Binding Network Protocols.....................................................7-25

Chapter 8 Contacting Emulex

Technical Assistance.........................................................................8-2

Prior to Your Call .....................................................................8-2

Placing the Call.........................................................................8-2

Domestic.............................................................................8-3

European.............................................................................8-3

24 - Hour Support.....................................................................8-4

Product Service 8-4

Bulletin Board System......................................................................8-4

Internet..............................................................................................8-6

Emufax..............................................................................................8-7

Table of Contents v

Appendix A Diagnostic Programs

Diagnostic Platform......................................................................... A-2

Diagnostic Operating Requirements........................................ A-2

README.DOC....................................................................... A-2

Distribution Diskette ............................................................... A-3

Diagnostic Platform Instructions............................................. A-3

Using DCPDIAG3 For The DCP386i............................................. A-7

Diagnostic Operating Requirements........................................ A-7

README.DOC....................................................................... A-7

Distribution Diskette ............................................................... A-7

Running the Diagnostic........................................................... A-8

Thank you for purchasing the DCP_link Multi-Protocol Router. You have joined the Emulex family of users, who have found that buying our products guarantees available performance and bandwidth while preserving resources. We value a strong relationship with our customers and seek to continually serve your needs in the years to come.

Product Support

Emulex products are supported by a broad range of educational and technical support services. They are available to help you maximize your system performance.

Emulex Corporation (HQ) (714) 662-5600 PreSales (714) 513-8053 Technical Support (714) 513-8270

Preface

Audience for Advanced Configuration Guide

The DCP_link Advanced Configuration Guide is included as a supplement to the DCP_link Quick Start User’s Guide. For most standard installations and WAN setups, the Quick Start User’s Guide should answer most start up and configuration questions. The Advanced Configuration Guide is intended to answer questions concerning WAN connectivity and planning. It also includes extensive cable pin drawings for use in designing custom cabling.

ii Preface

User Guide Conventions

Sections of text that are marked for emphasis are formatted with the following key words:

For example:

CAUTION: Provides the user with directions to prevent a

When a command is illustrated in the user’s guide, the variable choices allowed to be changed will appear in a lines will begin with a triangular shaped symbol.

An example of a command line is:

> LOAD INETCFG

DCPx86i/e Terminology

Throughout this manual, DCPx86i/e is used to represent the Emulex DCP product line based on the Intel 80x86 microprocessors. These include the following:

Note, Important, or Caution.

mistake from occurring.

contrasting typeface. All command

• DCP286i-SBC (Single Board Configurable, ISA bus)

• DCP386

• DCP486

• All of these products are compatible with the Emulex DCP_link

software.

i (ISA bus) e (EISA bus)

Preface iii

Chapter 1

EMULEX DCP_LINK.............................................................................................1-2

ARDWARE REQUIREMENTS...........................................................................1-3

OFTWARE REQUIREMENTS............................................................................1-3

1-2 Chapter 1

Emulex DCP_link

Emulex DCP_link is a multi-protocol router including WAN connectivity software and one of the DCPx86 DCP_link is designed to work in conjunction with the Novell NetWare Branch Link and Enterprise Router, formerly known as the Novell MultiProtocol Router (MPR 3.0). This unique adapter and software combination provides remote connectivity across numerous interfaces, protocols, network types and hardware platforms.

Through Novell ODI specification compliance, Emulex DCP_link adds the integrated hardware and software components necessary for remote WAN connections on NetWare LAN environments. In addition to the WAN adapter, specialized interface modules and protocol stacks are included to allow upper-level applications the transparent network link to run over multiprotocol configurations.

A copy of Novell MPR 3.0 (Branch Link or Enterprise version) is included with DCP_link, and must be installed prior to installation of DCP_link.

NOTE: Please refer to the Novell MPR installation

instructions outlined in Chapter 5 of the Novell

NetWare MultiProtocol Router 3.0 Installation and Basic Configuration Guide

DCP_link.

i/e family of communications adapters.

included with

Hardware Requirements

In order to successfully install the Emulex DCP_link software, you must be running NetWare on a Novell approved hardware platform, or you must first install the Runtime version of Novell NetWare that is shipped with DCP_link. If you are running on a Novell approved hardware platform, you will need the following minimum configuration.

• An Intel (or equivalent) 80386 (minimum) based host server with

ISA/EISA slot(s) available for WAN adapter(s).

• At least 16MB of system RAM.

• 80 MB of available hard disk memory.

• (For CD-ROM installation only) A CD-ROM drive compatible with ISO

9660 formatted disks.

• NetWare certified LAN Network Interface Card (NIC) for local routing.

• A 3.5” floppy diskette drive.

You will need the following communications equipment:

Introduction 1-3

• For analog lines, synchronous modems at both ends of the WAN

connection (point-to-point configurations).

• DSU/CSU, synchronous modem, PBX, or T1 multiplexer.

• Cable connectors and adapters, as applicable, for RS-232C, V.35, RS-

422, or X.21 interfaces. Basic connectors for RS-232C and RS-422 are included with DCP_link.

Software Requirements

To operate properly, your system software should be configured as follows:

• The system should start DOS from the hard disk. NetWare is started from

DOS before it takes over the system hardware completely.

• Novell DOS 7 (included), MS-DOS or PCDOS 3.1 or higher.

1-4 Chapter 1

CAUTION: The system must not load any of the following

Verify that the Novell environment meets the following criteria:

• NetWare O/S version 3.12 or version 4.1 (Runtime version included with

DCP_link).

• Novell MultiProtocol Router (Branch Link or Enterprise version) MPR

3.0, (included with DCP_link).

• You must successfully install MPR software before attempting to install

the Emulex adapter.

What’s Next?

modules:

- extended memory managers, such as HIMEM, QEMM, or EMM386.

- disk compression utilities, such as Disk Doubler.

- any terminate-and-stay-resident (TSR) programs.

After ensuring that you have the minimum hardware and software configuration for your server/router, refer to chapter 2 to:

 Review Hardware Configuration and determine if you are able to use the

Factory Default Settings.

Hardware

Configuration

Chapter 2

FACTORY DEFAULT SETTINGS ......................................................................2-2

ASE I/O ADDRESS .........................................................................................2-3

OST INTERRUPT LEVEL (IRQ SETTING)........................................................2-5

DCP286I-SBC ADAPTER CONFIGURATION..................................................2-6

UMPER SETTINGS...........................................................................................2-6

Software Compatibility Level.................................................................2-7

Control Register 4 Read Option..............................................................2-8

Window Group Select.............................................................................2-8

Memory Size...........................................................................................2-8

ETTING DATA CLOCK DIRECTION (DTE OR DCE) .......................................2-9

DCP386I ADAPTER CONFIGURATION .........................................................2-11

UMPER SETTINGS.........................................................................................2-11

PC I/O Channel Check..........................................................................2-12

Window Group Select...........................................................................2-12

DCP486E ADAPTER CONFIGURATION........................................................2-14

UMPER SETTINGS.........................................................................................2-14

Window Group Select...........................................................................2-14

DCP386I/486E DAUGHTERBOARD SETTINGS............................................2-16

ORT RS-232 DAUGHTERBOARD...............................................................2-16

8-P

DTE/DCE Selection..............................................................................2-16

ORT RS-422/X.21 DAUGHTERBOARD......................................................2-18

8-P

ETTING DTE OR DCE OPERATION..............................................................2-18

2-2 Chapter 2

DCP_link features an 80x86 microprocessor based “intelligent” WAN adapter to provide powerful co-processing capabilities. The adapter utilizes 1Mb of on-board shared memory to transfer commands and data to the NetWare server. DMA channels are included to support full-duplex operation.

This chapter describes the factory default configuration of the DCP286 applications.

i/386i/486e and tells how to configure the board for WAN

Factory Default Settings

This factory default configuration is correct for all WAN applications:

• DCP286i, DCP386i and DCP486e compatibility level

• 1 Megabyte memory size

• Window Group Select 16K, 32K, 64K, 1MB

• Control Register 4 Read option enabled

IMPORTANT: The base I/O address and the IRQ level

must not be in conflict with any other adapter on the server. Verify that both the base I/O address and the interrupt level (IRQ setting) configured on the adapter match the software configuration. For more information, refer to

Verify that the following factory default parameters are appropriate for your server environment. If you can use the factory default configuration, refer to the DCP_link Quick Start User’s Guide.

Base I/O address 33C hex Interrupt Level (IRQ) 3 Data clock direction DTE

Chapter 6.

NOTE: The Base I/O address and IRQ settings are the

Other switch or jumper settings unique to an individual adapter type (i.e., DCP286i-SBC, DCP386i, or DCP486e) are detailed in a separate section of this chapter specific to each adapter.

Base I/O Address

The Base I/O address is selected via switch SW1, which may be labeled CR ADDR (Control Register Address) on some adapters.

The adapter requires four bytes of I/O locations for its control registers. These control registers are used by the server CPU to coordinate and service information provided by the adapter. The address of these registers depends on the setting of switches SW1-1 through SW1-4. The factory default is set to 33C hex.

Figure 2-1 shows the possible settings for the Control Register 1 address. To locate the position of SW1 on the adapter, refer to the appropriate diagram in the following sections for the adapter type you are installing (i.e. 286, 386 or

486).

Hardware Configuration 2-3

same for all adapters. Data Clock Direction, DTE, is correct for all connections except V.35.

2-4 Chapter 2

SW1 - Base I/O Address Settings

Figure 2-1 SW1

Host Interrupt Level (IRQ Setting)

The jumper block used to set the IRQ is unique to each adapter type.

DCP286i - J13 DCP386i - J6

DCP486e - J11 Refer to the specific adapter section for the location of this jumper. The available IRQ jumper settings are:

Hardware Configuration 2-5

/ IRQ 2

Figure 2-2 Host Interrupt Level Jumper Plug Settings

Use one jumper to select the appropriate interrupt level. As an example, to configure the adapter for interrupt level 5, set the jumper as follows:

Figure 2-3 IRQ 5 Jumper Block Placement

NOTE: IRQ 9 is labeled IRQ 2 on the 386 and 486

adapters. The 16 bit bus slot required by the adapters defines this position as IRQ 9.

2-6 Chapter 2

DCPx86i/e Adapter Configuration

The remainder of Chapter 2 is divided into three sections according to adapter type (DCP286i-SBC, DCP386i, or DCP486e). Please refer to the section for the adapter you are installing.

DCP286i-SBC Adapter Configuration

The following diagram of the DCP286i-SBC adapter shows the location of all option setting switches and jumpers:

Jumper Settings

Figure 2-4 DCP286i-SBC Jumper Block Placement

NOTE: Jumper block J13 sets the Host Interrupt Level and

SW1 sets the base I/O address for the 286 adapter. Reference the beginning of this chapter for details on these settings.

Hardware Configuration 2-7

Figure 2-5 shows the factory default options for the standard adapter configuration. The factory default setting, as shown, calls for jumper blocks to be in place on each jumper, thus enabling each option:

Figure 2-5 Factory Default Jumper Block Placement

Figure 2-6 - Jumper Block J1 Options

Software Compatibility Level

Jumper J1:1-2 selects the software compatibility level of the DCP286 In the factory default (jumper connected), an application program is able to detect that the board is a DCP286 available in the original DCP286.

i-SBC.

i and can take advantage of features not

2-8 Chapter 2

Control Register 4 Read Option

Set Jumper J1 to enable (J1-3 to J1-4 connected) host read access to Control Register 4.

Window Group Select

The DCP286i-SBC contains memory that is shared by the host. The host software can select the size of the window that is shared using jumper J1:5-6. The factory default setting (J1-5 to J1-6 connected) allows window sizes of 16K, 32K, 64K or 1MB. By removing this jumper, window sizes of 16K, 64K or 128K are made available.

Memory Size

The memory size on the board, 512 kB or 1MB, is selected by jumper position J1:7-8. The DCP286 RAM. Remove this jumper to select 512 kB of RAM.

i-SBC is shipped with 1 MB of Dynamic

Hardware Configuration 2-9

Setting Data Clock Direction (DTE or DCE)

J7, J8, J9 and SW-3 set the synchronous data clock direction (DTE or DCE) for port 1. Jumpers J4, J5, J6 and SW2 set the synchronous data clock direction (DTE or DCE) for Port 2.

PORT 2 PORT 1

Figure 2-7 Factory Default DTE Settings All Modes Except V.35

NOTE: DTE OPERATION RS422: In the RS422 mode

additional flexibility is provided to terminate receivers with 100 ohm resistors. If termination resistors are required in this mode, additional switches SW3 - 2, 3 and 4 should be CLOSED (SW2 for Port 2).

PORT 2 PORT 1

Figure 2-8 DCE Settings All Modes Except V.35

NOTE: DCE OPERATION RS422 Port 1: In RS422 DCE

mode, if termination resistors are required, additional switch SW3 - 2 should be CLOSED (SW2 for Port 2).

2-10 Chapter 2

PORT 2 PORT 1

Figure 2-9 DTE Settings for the V.35 Mode

PORT 2 PORT 1

Figure 2-10 DCE Settings for the V.35 Mode

What’s Next?

After configuring the DCP286i adapter, refer to chapter 3 to:

 Install the DCP286i adapter in your computer.  Attach cable.

Hardware Configuration 2-11

DCP386i Adapter Configuration

The following diagram of the DCP386i adapter shows the location of all option setting switches and jumpers:

Figure 2-11 DCP386i Jumper Block Placement

Jumper Settings

See Figure 2-11 for the location of each jumper block.

NOTE: Jumper block J6 sets the Host Interrupt Level and

SW1 sets the base I/O address for the 386 adapter. Reference the beginning of this chapter for details on these settings.

Jumper block J1 and J3 contain the factory default settings for the following options:

• PC I/O Channel Check

• Window Group Select

Reference the following factory default options for the standard Wan configuration.

2-12 Chapter 2

Figure 2-12 DCP386i Factory Default Jumper Connections

PC I/O Channel Check

The factory default setting (J1-2 to J1-3 connected) for the DCP386 provides an interrupt line to the PC for parity errors in the shared memory. This is the I/O Channel Check signal on the PC bus.

A parity error may instead interrupt the local processor at level 0 of the local 82C59. This can be done by placing the jumper in the LCL position (J1-1 to J1-2 connected). Refer to Figure 2-12 for the factory default jumper settings.

Window Group Select

The DCP386 can select the size of the window that is shared using Jumper J3. The factory default setting (J3-1 to J3-2 connected) allows window sizes of 16K, 32K, 64K or 1M. Changing this jumper plug position (J3-2 to J3-3 connected), allows window sizes of 16K, 64K or 128K. Figure 2-13 shows the Window Group Select jumper settings.

Factory Default

i contains memory that is shared by the host. The host software

Figure 2-13 Window Group Select Jumper Plug Settings

What’s Next?

After configuring the DCP386I adapter, refer to Daughterboard Settings section later in this chapter to:

 Configure daughterboard.

Hardware Configuration 2-13

2-14 Chapter 2

DCP486e Adapter Configuration

The following diagram of the DCP486e adapter shows the location of all option setting switches and jumpers:

Figure 2-14 DCP486e Jumper Block Placement

Jumper Settings

Refer to Figure 2-14 for jumper locations.

NOTE: Jumper block J11 sets the Host Interrupt Level and

Jumper block J8 contains the factory default settings for the following options:

• Window Group Select Reference the following factory default options for the standard WAN

configuration.

Window Group Select

The DCP486 can select the size of the window that is shared. Factory default setting (J8-1 to J8-2 connected) allows window sizes of 16K, 32K, 64K or 1 Megabyte.

SW1 sets the base I/O address for the 486 adapter. Reference the beginning of this chapter for details on these settings.

e contains memory that is shared by the host. The host software

Hardware Configuration 2-15

Changing this jumper plug position (J8-2 to J8-3 connected), allows window sizes of 16K, 64K or 128K.

Figure 2-24 shows the Window Group Select jumper settings.

1 2 3

Figure 2-15 Window Group Select Jumper Positions

What’s Next?

After configuring the DCP486E adapter, refer to Daughterboard Settings section to:

 Configure daughterboard.

1 2 3

2-16 Chapter 2

DCP386i/486e Daughterboard Settings

This section provides configuration and installation instructions for the 8port RS-232 full duplex DMA daughterboard (I.D.=BC) and the 8-port RS422/X.21 daughterboard. Both daughterboards are fully compatible with the DCP386

8-Port RS-232 Daughterboard

The 8-port RS-232 daughterboard adds the following features to the Emulex DCP386

• All 8 serial ports may be individually configured as either DTE or DCE

• RS232 voltage option.

• Backwards-compatible with the RS-232C 4-port daughterboard

DTE/DCE Selection

Switches SW1 through SW4 are used to select DCE or DTE operation. These switches are placed along the board edge as shown in Figure 2-14.

i and DCP486e adapters.

i and DCP486e:

mode.

NOTE: Throughout this document, DCE refers to internal

clocking and DTE refers to external clocking.

SW1

SW3

Figure 2-16 Switch Locations on the 8-Port RS-232 Daughterboard

SW4

SW2

Each switch configures two ports, as detailed in the following table:

Hardware Configuration 2-17

Switch Port # DTE DCE

SW1 1 1-Closed

1-Open 2-Open 3-Open

2 4-Closed

5-Open 6-Open

SW2 3 1-Closed

2-Open 3-Open

4 4-Closed

5-Open 6-Open

SW3 5 1-Closed

2-Open 3-Open

6 4-Closed

5-Open 6-Open

2-Closed

3-Closed

4-Open

5-Closed

6-Closed

1-Open

2-Closed

3-Closed

4-Open

5-Closed

6-Closed

1-Open

2-Closed

3-Closed

4-Open

5-Closed

6-Closed

SW4 7 1-Closed

2-Open 3-Open

8 4-Closed

5-Open 6-Open

1-Open

2-Closed

3-Closed

4-Open

5-Closed

6-Closed

2-18 Chapter 2

8-Port RS-422/X.21 Daughterboard

This section provides configuration and installation instructions for the eight port RS-422/X.21 Each serial port may be individually configured as either DTE or DCE with the aid of null-modem cables. All ports support RS-422A.

Setting DTE or DCE Operation

NOTE: Throughout this document, DCE refers to internal

clocking and DTE refers to external clocking.

SW1

SW3 SW4

SW2

Figure 2-17 Switch Locations on the 8-Port RS-422/X.21 Daughterboard

Hardware Configuration 2-19

DTE/DCE clock selection is determined by the following switch settings:

Switch Port # DTE DCE

SW1 1 1 Closed

1 Open

2 6 Closed

SW2 3 1 Closed

4 6 Closed

SW3 5 1 Closed

6 6 Closed

SW4 7 1 Closed

8 6 Closed

What’s Next?

2-5 Open

7-10 Open

2-5 Open

7-10 Open

2-5 Open

7-10 Open

2-5 Open

7-10 Open

2-5 Closed 6 Open 7-10 Closed 1 Open 2-5 Closed 6 Open 7-10 Closed 1 Open 2-5 Closed 6 Open 7-10 Closed 1 Open 2-5 Closed 6 Open 7-10 Closed

After configuring the adapter and daughterboard, refer to chapter 3 to:

 Install the adapter in your computer.  Attach cable.

Installation and

Cabling

Chapter 3

INSTALLING THE EMULEX ADAPTER..........................................................3-3

CABLING CONNECTIONS.................................................................................. 3-4

FACTORY DEFAULT SETTINGS ......................................................................3-4

DCP286 DCP386

OPTIONAL CABLE DRAWINGS........................................................................3-6

OOPBACK PLUG OPTIONS..............................................................................3-6

DCP286I-SBC ADAPTER CABLES.....................................................................3-9

RS-232 RS-422/530 RS-423 RS-485 V.35 X.21 RS-232 RS-232 RS-423/RS-485 V.35 X.21

I-SBC ADAPTER CABLES...................................................................3-4

I/486E DAUGHTERBOARD CABLING ..................................................3-4

RS-232 Cabling.......................................................................................3-4

RS-422/X.21 Cabling..............................................................................3-5

R-S232/EIA-530 Loopback Plug (DB25F).............................................3-6

V.35 Loopback Plug Winchester Male...................................................3-7

X.21 Loopback Plug DBI5F ...................................................................3-8

CABLE ASSEMBLY..............................................................................3-9

CABLE ASSEMBLY ....................................................................3-10

CABLE ASSEMBLY............................................................................3-11

CABLE ASSEMBLY............................................................................3-12

CABLE ASSEMBLY................................................................................3-13

CABLE ASSEMBLY................................................................................3-14

STANDARD CABLE ...........................................................................3-15

NULL-MODEM CABLE (CROSSOVER)...............................................3-16

NULL MODEM CABLE.........................................................3-17

NULL MODEM CABLE...........................................................................3-18

NULL MODEM CABLE...........................................................................3-19

3-2 Chapter 3

DCP386I/486E DAUGHTERBOARD CABLING............................................. 3-20

RS-232

CABLING..........................................................................................3-20

RS-232 Standard Cable.........................................................................3-21

RS-232 Null-Modem Cable (Crossover).............................................. 3-22

RS-232 Three-Wire Port Cable ............................................................ 3-22

RS-422/X.21

CABLING................................................................................. 3-23

RS-422 Standard Cable.........................................................................3-24

X.21 Adapter Cable.............................................................................. 3-25

RS-422 Null-Modem Cable.................................................................. 3-26

TROUBLESHOOTING ....................................................................................... 3-27

This section describes the procedure for installing the DCP286i-SBC, the DCP386 troubleshooting procedures are also provided.

i, and the DCP486e WAN adapter in your server/router. Brief

Installing the Emulex Adapter

To install the adapter perform these steps:

1) Turn off power to the system unit. Remove the power cord from the unit

and the AC outlet.

2) Loosen attaching screw and remove the top cover of the system unit.

Hardware Installation 3-3

3) Remove the cover from an empty slot. The DCP286

may be installed in a 16-bit ISA and EISA slot. However, the DCP486 must be installed in an EISA slot.

4) Slide the board into the empty slot. Press firmly to seat the board.

5) Secure the board with the screw removed in step 3.

6) Replace the system unit cover and reconnect the power cord.

7) Connect cable. Before connecting the external device, you may want to perform a complete

functional test of the unit. Refer to Section 4 for instructions on running the diagnostics.

i-SBC and DCP386i

3-4 Chapter 3

Cabling Connections

Cabling specifications for each adapter type (DCP286i-SBC, DCP386i and DCP486 noticed when connecting a DTE port to a DCE device (normally a straight through cable), and when connecting a DTE port to a DTE device (normally a null modem cable). Factory setting on all cabling is DTE.

e) are found in the following section. Cabling differences will be

Factory Default Settings

DCP286i-SBC Adapter Cables

The DCP286i-SBC adapter is shipped with two standard adapter cables which convert the Micro-D25 male output to a standard DB25 output. Install the adapter cable for the environment in which you are working:

− RS232, Emulex part no. PT1011208-01

− V.35, Emulex part no. PT1011213-01

DCP386i/486e Daughterboard Cabling

This section discusses the default cable connections between the 8-port daughterboard on the DCP386i and DCP486e adapters and external devices.

RS-232 Cabling

The serial ports on the 8-port daughterboard are connected to external devices via an 8-port breakout cable, also known as an Octopus cable. Each output provides a standard 25-pin male RS-232C connector for attachment to external devices.

NOTE: All connections to the board should be made using

shielded cables to reduce radio frequency interference.

− RS232 8-port breakout cable for DCP386i and DCP486e adapter

(80-pin), Emulex part no. PA1011236-01.

RS-422/X.21 Cabling

For RS-422/X.21 conversion, you will need a set of eight X.21 conversion cables at the end of the 8-port breakout cable. These are available from Emulex Sales Support.

− RS422 8-port breakout cable for DCP386i and DCP486e adapter

(100-pin), Emulex part no. PT1011205-01

Note: Be sure to securely screw in all cables to avoid any

Hardware Installation 3-5

loose connections.

3-6 Chapter 3

Optional Cable Drawings

Loopback Plug Options

A loopback connector must be used when running external loopback tests on the DCP286

R-S232/EIA-530 Loopback Plug (DB25F)

Loopback plug signals for the female 25-pin connector. This loopback plug will work for RS232, RS422/EIA530, RS423, and RS485 adapter cables.

i/386i/486e Platform Diagnostics.

TDA

TDB RDA RDB

TCA

TCB RCA RCB

RTSA CTSA RTSB CTSB DTRA

DSRA

CDA

DTRB DSRB

CDB

Figure 3-1 (Not Supplied by Emulex)

V.35 Loopback Plug Winchester Male

Hardware Installation 3-7

TDA TDB RDA RDB TCA TCB RCA RCB

DTR DSR

RTS CTS

Figure 3-2 (Not Supplied by Emulex)

3-8 Chapter 3

X.21 Loopback Plug DBI5F

TB RA RB CA CB

SA SB

Figure 3-3 (Not Supplied by Emulex)

DCP286i-SBC Adapter Cables

RS-232 Cable Assembly

Hardware Installation 3-9

MICRO-D25 FEMALE

SHELL

1 2

TDB

RDB

CDB RCB

TCB

9 17 12 15 20 23

7 11 18 21 24 25

RTSB

CTSB

DSRB

DTRB

RGND MODE0 MODE1 MODE2 MODE3

TDA

RDA

RTSA

CTSA

DSRA

CDA

RCA

TCA

DTRA

DB25 MALE

SHELL

1 2 14 3 16 4 19 5 13 6 22 8 10 9 17 12 15 20 23 7 11 18 21 24 25

Figure 3-4 Emulex Part #PT1011208-01

3-10 Chapter 3

RS-422/530 Cable Assembly

MICRO-D25 FEMALE

RTSB

CTSB

DSRB

CDB

DTRB

RGND MODE0 MODE1 MODE2 MODE3

SHELL

1 2

9 17 12 15 20 23

7 11 18 21 24 25

TDA TDB RDA RDB RTSA RTSB CTSA CTSB DSWRA DSRB CDA CDB RCB RCA TCB TCA DTRA DTRB SG

DB25 MALE

SHELL

1 2 14 3 16 4 19 5 13 6 22 8 10 9 17 12 15 20 23 7 11 18 21 24 25

Figure 3-5 Emulex Part #PT1011209-01

RS-423 Cable Assembly

Hardware Installation 3-11

MICRO-D25 FEMALE

SHELL

1 2

TBD

RDB

CDB RCB

TCB

9 17 12 15 20 23

7 11 18 21 24 25

RTSB

CTSB

DSRB

DTRB

RGND MODE0 MODE1 MODE2 MODE3

TDA

RDA

RTSA

CTSA

DSRA

CDA

RCA

TCA DTRA

SG RGND

DB25 MALE

SHELL

1 2 14 3 16 4 19 5 13 6 22 8 10 9 17 12 15 20 23 7 11 18 21 24 25

Figure 3-6 Emulex Part #PT1011211-01

3-12 Chapter 3

RS-485 Cable Assembly

CDB

SHELL

1 2

9 17 12 15 20 23

7 11 18 21 24 25

MICRO-D25 FEMALE

RTSB

CTSB

DSRB

DTRB

RGND MODE0 MODE1 MODE2 MODE3

TDA TDB RDA RDB RTSA RTSB CTSA CTSB DSRA DSRB CDA CDB RCB RCA TCB TCA DTRA DTRB SG

DB25 MALE

SHELL

1 2 14 3 16 4 19 5 13 6 22 8 10 9 17 12 15 20 23 7 11 18 21 24 25

Figure 3-7 Emulex Part #PT1011210-01

V.35 Cable Assembly

Hardware Installation 3-13

CDB

SHELL

1 2

9 17 12 15 20 23

7 11 18 21 24 25

MICRO-D25 FEMALE

RTSB

CTSB

DSRB

DTRB

RGND MODE0 MODE1 MODE2 MODE3

TDA TDB RDA RDB RTSA

CTSA

DSRA

CDA

RCB RCA TCB TCA DTRA

V.35 FEMALE

SHELL

A P S R T C

X V AA Y H

Figure 3-8 Emulex Part #PT1011213-01

3-14 Chapter 3

X.21 Cable Assembly

Figure 3-9 Emulex Part #PT1011221-01

RS-232 Standard Cable

Hardware Installation 3-15

DB25

FEMALE

DCP PORT

TDA

RDA

RTSA

CTSA

DSRA

CDA

TCA

MODEM OR OTHER DC

RCA

DTRA

Figure 3-10 (Not Supplied by Emulex)

3-16 Chapter 3

DCP PORT

RS-232 Null-Modem Cable (Crossover)

DB25 FEMALE

TRANSMIT DATA

RECEIVE DATA

REQUEST TO SEND

CLEAR TO SEND

DATA SET READY

SIGNAL GROUND

DATA CARRIER DETECT

TRANSMIT CLOCK

RECEIVE CLOCK

DATA TERMINAL READY

CHASSIS GROUND

DATA CARRIER DETECT

DATA TERMINAL READY

TRANSMIT DATA

RECEIVE DATA

REQUEST TO SEND

CLEAR TO SEND

DATA SET READY

SIGNAL GROUND

TRANSMIT CLOCK

RECEIVE CLOCK

TERMINAL

Figure 3-11 (Not Supplied by Emulex)

RS-423/RS-485 Null Modem Cable

Hardware Installation 3-17

Figure 3-12 (Not Supplied by Emulex)

3-18 Chapter 3

V.35 Null Modem Cable

DCP PORT V.35 MALE

SHELL

A C D

P S

T V X Y

F H B

ETC-A ETC-B

FG RTS CTS TDA TDB RDA RDB RCA RCB TCA TCB

DSR CD DTR SG

FG RTS CTS TDA TDB RDA RDB RCA RCB TCA TCB

DSR CD DTR SG

TERMINAL OR

OR OTHER DTE

ETC-A ETC-B

V.35

SHELL

A C D P S R T V X Y

E F H B

Figure 3-13 (Not Supplied by Emulex)

X.21 Null Modem Cable

Hardware Installation 3-19

SHIELD

Figure 3-14 (Not Supplied by Emulex)

3-20 Chapter 3

DCP386i/486e Daughterboard Cabling

This section discusses cable connections between the 8-port daughterboard on the DCP386i and DCP486e adapters and external devices.

RS-232 Cabling

The serial ports on the 8-port daughterboard are connected to external devices via an 8-port breakout cable. Each port provides a standard 25-pin male RS-232C connector for attachment to external devices.

To connect the port to a modem or other DCE device, use a standard straightthrough cable as shown in Figure 3-10.

If you are connecting the port to a DTE device, such as a terminal or another computer, you must use the null-modem cable shown in Figure 3-11.

If your device and application software do not require any modem or clock signals (async only) the three-wire cable shown in Figure 3-15 may be used.

NOTE: All connections to the board should be made using

shielded cables to reduce radio frequency interference.

Contact Emulex Sales Support for further information regarding price and model number of any support cables.

IMPORTANT: In order to provide proper strain relief it is

recommended that the breakout cable not be freely suspended from the PC chassis. If this is necessary, the breakout cable should be secured to a chassis or rack. This will help prevent the loss of electrical connection between the adapter and the cable.

RS-232 Standard Cable

Hardware Installation 3-21

DB25

FEMALE

DCP PORT

TDA

RDA

RTSA

CTSA

DSRA

CDA

TCA

MODEM OR OTHER DC

RCA

DTRA

Figure 3-15 (Not Supplied by Emulex)

3-22 Chapter 3

DCP PORT

RS-232 Null-Modem Cable (Crossover)

DB25 FEMALE

TRANSMIT DATA

RECEIVE DATA

REQUEST TO SEND

CLEAR TO SEND

DATA SET READY

SIGNAL GROUND

DATA CARRIER DETECT

TRANSMIT CLOCK

RECEIVE CLOCK

DATA TERMINAL READY

CHASSIS GROUND

TRANSMIT DATA

RECEIVE DATA

REQUEST TO SEND

CLEAR TO SEND

DATA SET READY

SIGNAL GROUND

DATA CARRIER DETECT

TRANSMIT CLOCK

RECEIVE CLOCK

DATA TERMINAL READY

Figure 3-16 (Not Supplied by Emulex)

TERMINAL

RS-232 Three-Wire Port Cable

DCP PORT DTE

7 z

CHASSIS GROUND

TRANSMIT DATA TRANSMIT DATA

RECEIVE DATA RECEIVE DATA

SIGNAL GROUND

Figure 3-17

z 7

RS-422/X.21 Cabling

External devices are connected to the daughterboards on the DCP386i and DCP486e adapters via a breakout cable. This cable provides eight short cables, each with a DB25M (male) connector. The breakout cable is connected to the daughterboard via a 100-pin connector.

All connections should be made using shielded cabling to reduce radio frequency interference. Emulex provides several different cables for connecting to external devices. Contact Emulex Network Systems Division for information on available cables and prices.

Hardware Installation 3-23

3-24 Chapter 3

RS-422 Standard Cable

DCP PORT DCE

MODEM OR

CHASSIS GROUND

TRANSMIT DATA (A)

RECEIVE DATA (A)

REQUEST TO SEND (A)

CLEAR TO SEND (A)

SIGNAL GROUND

RECEIVE CLOCK (B)

TRANSMIT CLOCK (B)

CLEAR TO SEND (B)

TRANSMIT DATA (B)

TRANSMIT CLOCK (A)

RECEIVE DATA (B)

RECEIVE CLOCK (A)

REQUEST TO SEND (B)

Figure 3-18

X.21 Adapter Cable

Hardware Installation 3-25

DB25 MALE MALE

J1 P1

SHLD SHLD

TDA

TDB

RDA

RDB

TCA

TCB

RCA SA

RCB

RTSA

RTSB

DSRA IA

DSRB

DCDA

DCDB

CTSA

CTSB

GND

Figure 3-19 Emulex Part #PT1011204-01

3-26 Chapter 3

RS-422 Null-Modem Cable

DCP PORT

CHASSIS GROUND

TRANSMIT DATA (A) TRANSMIT DATA (A)

RECEIVE DATA (A) RECEIVE DATA (A)

REQUEST TO SEND (A) REQUEST TO SEND (A)

CLEAR TO SEND (A) CLEAR TO SEND (A)

RECEIVE CLOCK (B) RECEIVE CLOCK (B)

TRANSMIT CLOCK (B) TRANSMIT CLOCK (B)

CLEAR TO SEND (B) CLEAR TO SEND (B)

TRANSMIT DATA (B) TRANSMIT DATA (B)

TRANSMIT CLOCK (A) TRANSMIT CLOCK (A)

RECEIVE DATA (B) RECEIVE DATA (B)

RECEIVE CLOCK (A) RECEIVE CLOCK (A)

REQUEST TO SEND (B) REQUEST TO SEND (B)

SIGNAL GROUND

Figure 3-20

Troubleshooting

If you experience a problem immediately after installing the adapter, check these areas:

1) Is the device cable the correct type? Some asynchronous cables do not

have enough wires to support the additional signals required for synchronous communications.

2) Is the board securely seated in the system unit?

3) Are any connections to other boards loose?

4) Are the cable connections made properly? Are the connections loose?

5) Are the factory-set jumpers and switches set correctly?

6) Is the power cord loose in the wall socket or at the rear connection to the

system unit?

7) Are the external equipment connections made properly and is the

equipment powered on?

Hardware Installation 3-27

If the problem still remains, run the DCP286 program performs a complete check of all functional areas on the board. Refer to Appendix A for operation of the diagnostic software. Report any errors to Emulex Technical Support by calling the phone numbers listed in the front of this guide.

What’s Next?

After installing the Emulex adapter and connecting external devices refer to chapter 4 to:

 Install Software

i/386i/486e diagnostic. This

Software Installation

Chapter 4

SOFTWARE INSTALLATION PROCEDURE ..................................................4-2

Installing to Novell NetWare version 3.12................................................................................4-2

Installing to Novell NetWare version 4.1..................................................................................4-4

UNINSTALL PROCEDURES ...............................................................................4-6

Uninstall Using NetWare Version 3.12.....................................................................................4-6

Uninstall using NetWare version 4.1.........................................................................................4-8

4-2 Chapter 4

Software Installation Procedure

This section describes the installation procedure for the Emulex DCP_link software. The software can be installed either locally on a single server or remotely on several servers.

If NetWare MPR 3.0 software has been successfully loaded on your system, please continue with installation of the Emulex software. The installation procedure has been divided into two subsections based upon the version of Novell NetWare you are using (version 3.12 or 4.1):

Installing to Novell NetWare version 3.12

1) At the NetWare server system console prompt, type

Load Install <Enter>

The Installation Options menu appears.

Figure 4-1 The Installation Options Menu

2) Select Product Options and press <Enter>.

A list of currently installed products (if any) is displayed.

3) Press <Ins> to begin the installation.

4) Insert the DCP_link INSTALL diskette into a floppy disk drive and enter

the drive’s letter; simply press <Enter> to accept the default drive A:

Figure 4-2 Install Drive Path

Software Installation 4-3

After a short delay, the Installation Options menu appears.

Figure 4-3 Installation Options Menu

Select Install on Local Server Only, then press <Enter>. The INSTALL program copies several files from the INSTALL diskette

to a local directory.

5) When the source files have been copied, the following message is

displayed:

Installation was successful. Bring down and restart each server on which you installed the software to ensure that it uses the newest NLM files.

6) Press <Enter>. The Installation Options menu will again be displayed.

7) Select

Display Log File after install to check for any installation

problems. A list of files that were not installed (for any reason) will be displayed at the bottom of the Display Log File.

8) Select

Display README Files for new additions or information.

9) Select <Exit> to continue the installation procedures.

10) The list of Currently Installed Products is again displayed. Verify that

EMULEX WAN for NetWare has been added to the list.

11) Highlight EMULEX WAN for NetWare and press <Enter> to access

the Internetworking Configuration menu.

12) You are now ready to configure the Emulex DCP_link adapter and create

specific WAN links. Please turn to

Chapter 5, Software Configuration

to continue.

4-4 Chapter 4

Installing to Novell NetWare version 4.1

1) At the NetWare server system console prompt, type

Load Install <Enter>

The Installation Options menu appears.

Figure 4-4 The Installation Options Menu (v.4.1)

2) Select Product Options, then press <Enter>.

The Other Installation Actions menu is displayed.

Figure 4-5 Other Installation Actions Menu

3) Select the View/Configure/Remove installed products option and

press <Enter>. A list of currently installed products will display.

4) Press <Ins> to begin installation.

5) Insert the Emulex DCP_link INSTALL diskette into a floppy disk drive:

If you inserted the INSTALL diskette into drive A:, the default drive, simply press <Enter>.

Software Installation 4-5

Note: If you inserted the INSTALL diskette into drive B: on a

local server, press <F3>, replace A:\ with B:\, then press <Enter>.

After a short delay, the Installation Options menu appears.

Figure 4-6 The Installation Options Menu

3) Install on Local Server Only is highlighted; press <Enter>.

The INSTALL program copies several files from the INSTALL diskette to a local directory.

4) When the source files have been copied, the following message is

displayed:

Installation was successful. Bring down and restart each server on which you installed the software to ensure that it uses the newest NLM files.

5) Press <Enter>, the Installation Options menu will again be displayed.

6) Select

Display Log File to check for any installation problems. A list of

any files that were not installed (for any reason) is displayed at the bottom of the file.

7) Select

Display README Files for new additions or information.

8) Select <Exit> to continue the installation. The list of Currently Installed

Products is displayed. Verify that EMULEX WAN for NetWare has been added to the list.

4-6 Chapter 4

9) Highlight EMULEX WAN for NetWare and press <Enter> to access

the Internetworking Configuration menu.

10) You are now ready to configure the Emulex DCP_link adapter and create

specific WAN links. Please turn to to continue.

Uninstall Procedures

If it becomes necessary to unload Emulex software from your server/router, such as during an upgrade to a newer release, perform the following steps according to the Novell NetWare version you are running (version 3.12 vs.

4.1).

Uninstall Using NetWare Version 3.12

1) At the console server prompt, type:

LOAD INETCFG <Enter>.

The Internetworking Configuration menu will be displayed:

Chapter 5, Software Configuration

2) Select

Network Interfaces. Using the <Del> key, deconfigure all

interfaces associated with the Emulex adapter.

Figure 4-8. The Internetworking Configuration Menu

3) Press <Esc> to return to previous menu.

4) Select

Boards and remove all Emulex WAN configurations by

highlighting all references to the EMXMLID driver and pressing the <Delete> key.

Software Installation 4-7

All protocol Binds and WAN Call Destinations will be deleted automatically. Return to the console server prompt when finished.

5) At the console server prompt, type:

Load Install <Enter>.

The Installation Options menu will be displayed:

Figure 4-9. The Installation Options Menu

6) Select Product Options and delete the Emulex product

7) Exit Installation Options and purge the product files from the hard disk.

8) Remove the following directories and all associated files:

sys:system\Emulex\system

> > sys:system\Emulex

9) Remove all associated files in:

sys:system\emx*.*

also remove the following files:

sys:system\x.25_cca.nlm

sys:system\fr_cca.nlm sys:system\subagent.nlm

NOTE: User might have to change attributes to delete files

by entering the command “attribute -r <filename>“ from the server prompt.

10) Bring down and exit the server.

4-8 Chapter 4

Uninstall using NetWare version 4.1

1) At the console server prompt, type:

LOAD INETCFG <Enter>.

The Internetworking Configuration menu will be displayed:

2) Select

Network Interfaces. Using the <Del> key, deconfigure all

interfaces associated with the Emulex adapter.

3) Press <Esc> to return to the Internetworking Configuration menu.

Figure 4-10. The Internetworking Configuration Menu

4) Select Boards and remove all configurations by highlighting all

references to the EMXMLID driver and pressing the <Delete> key. You must also delete the protocol Binds and WAN Call Destinations to

each interface when prompted. Return to the console server prompt when finished.

5) At the console server prompt, type:

LOAD INSTALL <Enter>.

The Installation Options menu will be displayed:

Figure 4-11 The Installation Options Menu

Software Installation 4-9

6) Select Driver Options from the Installation Options menu, select

Configure the Network Drivers

and press <Enter>.

7) Using arrow keys, highlight

Deselect a Selected Driver and press

<Enter>.

8) Use the arrow keys to select the EMXMLID driver and press <Enter> or

<Delete> to remove it.

9) Return to the Installation Options menu and select

Product Options.

10) From the Other Installation Actions menu, select

View/Configure/Remove Installed Products.

11) Using the arrow keys, highlight the Emulex product and press the

<Delete> key to remove the product from the installation database.

12) Exit the Install utility.

13) Remove the following directories and all associated files:

sys:system\Emulex\system

> > sys:system\Emulex

14) Remove all associated files in:

sys:system\emx*.*

also remove the following files:

sys:system\x.25_cca.nlm

sys:system\fr_cca.nlm sys:system\subagent.nlm

15) Bring down and exit the server.

What’s Next?

After installing the DCP_link software, refer to Chapter 5 for:  Software Configuration

Software

Configuration

Chapter 5

INETCFG ...................................................................................................................5-2

INETCFG

SING CONTEXT-SENSITIVE HELP ................................................................................5-4

CONFIGURING WITH INETCFG...................................................................................5-5

MENUS ........................................................................................................5-2

5-2 Chapter 5

INETCFG

The Internetworking Configuration utility (INETCFG) is a menudriven utility used to configure the Emulex software.

You can run INETCFG while the router or server is operating. Each time the utility is used, it reads the existing AUTOEXEC.NCF file and optionally transfers the LOAD and BIND commands to a configuration file that is referenced at system initialization (or reinitialization). This eliminates manual reconfiguration of existing servers. Always allow INETCFG to automatically update configuration when prompted.

You must use INETCFG to configure the network environment.

Warning: Do not use text editors to modify the

configuration. Directly editing the INETCFG files may cause the system to encounter serious problems requiring a complete reload of the Netware operating system

Most configuration changes take effect only after you bring down the system and restart it. For example, if you enable or disable a board, or change parameters on a board, you must bring down the server and restart the system.

INETCFG Menus

INETCFG uses a series of menus, windows and dialog boxes to configure related sets of parameters. This configuration interface allows you to enter names of new interfaces, specify parameters and override defaults without having to use the command line.

The items in the main Internetworking Configuration menu correspond to the basic steps used to configure Emulex DCP_link. These items should be configured in the order presented in the configuration procedures.

Software Configuration 5-3

Boards - Determines which LAN and WAN boards are used in

the server or router. This option allows you to add new boards, modify the hardware parameters associated with the boards, enable or disable configured boards, or delete boards.

Network Interfaces - Allows you to configure media-specific

Data-Link layer parameters for each interface of a WAN board. LAN drivers require no further configuration.

WAN Call Directory - Specifies parameters required to establish

and maintain a WAN connection to a given destination for all protocols.

Protocols - Specifies global parameters for Network-layer

protocols.

Bindings - Enables a selected network protocol or bridge frame

to be routed across a particular LAN or WAN interface.

Manage Configuration - Enables you to perform the following

tasks:

− Configure SNMP parameters.

− Export/import configuration information to or from a disk.

− Configure remote access to this server.

− Edit the AUTOEXEC.NCF file.

View Configuration - Enables you to view the following

information:

− All LOAD and BIND commands.

− LAN adapter LOAD and BIND commands.

− WAN adapter LOAD and BIND commands.

− Protocol commands.

− Board interface and protocol binding information in a matrix

format. The summary can be saved to a file.

− Console messages captured during system restart or

generated by the loaded modules.

The bottom line of each INETCFG screen shows the command keys that can be used on that screen and the action that the key performs. These keys are.

5-4 Chapter 5

<Esc> key exits the current configuration window or help screen

and returns you to the previous screen. Press <Esc> from the main screen to exit the program and save your configuration changes.

<Enter> key allows you to view a list of configuration options or

modify the selected option’s configuration.

<Ins> key adds a new configuration. <Del> key deletes a configured option. <Up-arrow> and <Down-arrow> keys move the highlight bar up

and down through the available choices to indicate the current selection.

Other command keys available for a particular screen are displayed at the bottom of that screen.

Using Context-Sensitive Help

INETCFG provides three levels of context-sensitive help in most menu or parameter levels (some menus have only two levels).

Level 1- “fast help” is displayed in a single line across the

bottom of the screen.

Level 2 - Full context sensitive help is displayed when you press

the <F1> key.

Level 3 - Pressing <F1> a second time while viewing the full

context-sensitive help. brings a second level of help. This more general level explains the overall purpose of the menu or parameter.

Press <Esc> one time to exit each level of help screens. For example, if you are in a second-level help screen, you must press <Esc> twice to exit help completely.

Configuring with INETCFG

Important: You must use INETCFG to configure the

Emulex software and hardware you have

installed in your server/router.

If INETCFG is not running, complete the following steps to load it:

1) At the server prompt, type

LOAD INETCFG <Enter>

The Internetworking Configuration main menu is displayed.

Software Configuration 5-5

Figure 5-1

Note: The first time you run INETCFG, you will be

prompted to move all commands from Autoexec.ncf to other files that INETCFG uses. Answer Yes to this prompt.

2) If the Internetworking Configuration main menu is not

displayed, please refer to the Emulex DCP_link Advanced Configuration Manual for instructions on transferring LAN driver, protocol, and remote access commands.

3) Select

Boards, then press <Enter>.

The Configured Boards window is displayed.

5-6 Chapter 5

3) Press <Ins> to display the list of available drivers.

Figure 5-2

Figure 5-3

4) From the list, select the EMXMLID driver for the Emulex

DCPx86

i/e adapter installed in your system.

Note: Call Emulex technical support if the driver is

not listed.

5) Enter a name in the Board Name field up to 10 alphanumeric

characters and press <Enter>.

Software Configuration 5-7

Figure 5-4

6) Review the default values in the Board Configuration menu,

akes changes as needed.

and m

NOTE:

iew

Refer to Chapter 2 of this guide to rev the default configuration information used while installing the Emulex DCPx86i/e adapter. For non-standard installations, please refer to the Emulex DCP_link Advanced Configuration Manual.

7) Onc gs, press

e you have finished reviewing the default settin

Yes to save changes to the board configu

<Esc> and se ration.

lect

Note: Any conflicts with the chosen hardware

parameters will cause error messages to be displayed. Please contact Emulex technical support if conflicts cannot be resolved.

8) The Configured Boards window is redisplayed with the latest

configuration changes. Note that the board status is Enabled.

5-8 Chapter 5

Use the <Tab> key to toggle between Enabled and Disabled as needed .

9) Press <Esc> to return to the Internetworking Configuration

menu.

Wha

t’s Next?

After installing and configuring t Chapters 6 and 7 of this m



Frame Relay Configuration

 X.25 Configuration

anual for:

he DCP_link software, refer to

Frame Relay

Configuration

Chapter 6

INTRODUCTION................................................................................................................6-2

Frame Relay Networks..............................................................................................................6-2

Frame Relay Parameters............................................................................................................6-3

Diagramming Your Frame Relay Network................................................................................6-4

Planning Your Frame Relay Network........................................................................................6-4

CONFIGURING THE NETWORK INTERFACE...........................................................6-6

CONFIGURING WAN CALL DIRECTORY ................................................................6-10

NETWORK PROTOCOLS AND BINDINGS................................................................6-13

Configuring Protocol Parameters.............................................................................................6-13

Binding Network Protocols to a WAN Interface.....................................................................6-14

6-2 Chapter 6

Introduction

Emulex Frame Relay software is a streamlined, connection-oriented framemode data service based on frame-switching /relaying technology--the process of quickly transporting HDLC (High-level Data Link Control) frames through a network.

This software is based on protocol standard specified by the International Consultative Committee for Telegraphy and Telephony (CCITT) and ANSI (American National Standards Institute). Frame Relay was originally specified by CCITT as an Integrated Services Digital Network (ISDN) frame-mode service.

Emulex Frame Relay supports AppleTalk, Transmission Control Protocol/Internet Protocol (TCP/IP), Internetwork Packet Exchange (IPX) protocol, and the Source Route Bridge protocol of the NetWare MultiProtocol Router 3.0 software.

Frame Relay Networks

Private line networks permanently allocate dedicated transmission resources between communication end points, regardless of traffic conditions. The Frame Relay network uses statistical multiplexing. Transmission resources are not allocated until active communications exist. Network resources are shared dynamically among participating end points.

Frame Relay networks provide the best features of TDM (time division multiplexing): high-speed, low-delay circuit switching and the statistical multiplexing and port sharing of X.25 packet-switching technologies. These advantages guarantee bandwidth according to the set committed information rate (CIR), and allow bandwidth-on-demand bursts when available.

Frame Relay, a WAN telecommunications

The Frame Relay network consists of Frame Relay switches, which usually are owned and administered by the carriers. The access connection to the Frame Relay network is typically provided by a Local Exchange Carrier (LEC) and can also be bundled into the Frame Relay provider's service. A network provider can be an LEC; a Metropolitan Frame Relay service, an Interexchange Carrier (IXC), an interstate, national, or global Frame Relay service.

Frame Relay Configuration 6-3

Emulex Frame Relay encapsulates data frames and routes them through the Frame Relay network based on the Data-Link Connection Identifier (DLCI), which identifies the local permanent virtual circuit (PVC) end point of the router. DLCIs are defined through the configuration process or teamed through the Emulex Frame Relay link management protocol.

A Frame Relay network has the following characteristics:

• Transports frames transparently. The network modifies only the DLCI,

congestion bits, and frame check sequence (FCS).

• Detects transmission, format and operational errors.

• Preserves the order of the frame transfer on individual PVCs.

• Does not acknowledge or retransmit frames.

Using Emulex Frame Relay, you can have a logical end-to-end link (a virtual private line) between communication end points. Although Emulex Frame Relay appears as a dedicated private network to the user, the virtual circuits and high-speed internode trunking make it a more cost-effective service than a dedicated line service, with similar performance. It is intended primarily for high-speed, burst data communications applications, such as WAN interconnections.

Frame Relay Parameters

Emulex Frame Relay network service parameters, which are determined at subscription time, are in effect on a per virtual circuit basis. To set up and use Emulex Frame Relay, the following parameters must be configured before Frame Relay link activation:

Data Link Connection Identifiers (DLCls) are the PVC numbers that

you need for data transfer (one DLCI denotes one end of a virtual circuit). Two DLCIs, one at each end of the connection, are required to form one end-to-end virtual circuit. The DLCI is also known as the virtual circuit number.

When a client workstation needs access to a remote LAN, the Emulex Frame Relay router sends the frame to the local Frame Relay network switch which then sends it through the network to the remote end LAN.

Minimum committed bandwidth access is enforced using the CIR protocol feature. If a user exceeds the specified CIR limit, a risk of dropped packets exists. However, users working within their set CIR are usually guaranteed delivery by the service provider.

6-4 Chapter 6

The Frame Relay network switch monitors the access rate and size of data frames transferred through the mesh network. The data throughput CIR is guaranteed by the network, but allows for excess bursts (Be) of data not to exceed the access rate (AR) of the connection. The committed burst size (Bc) sets the maximum amount of data that the network agrees to transfer in a specified time period.

Bursting above the set CIR is allowed only if the connection is configured for it and the actual bandwidth is available on an end-to-end basis. This means that the entrance edge node into the Frame Relay network, the transit nodes within the network, and the exiting edge node from the network must be available before excess bursting can occur.

Diagramming Your Frame Relay Network

To ensure that all the desired connections to the Frame Relay network are properly diagrammed, complete these steps:

1) Diagram the existing Frame Relay network showing all router access

points.

2) Draw each connection from the local router to its corresponding partner.

3) Indicate the DLCI number assigned by the network for each connection

(PVC).

Planning Your Frame Relay Network

Specify the following parameters to ensure that all aspects of your connections to the Frame Relay network are covered:.

Contact your Frame Relay network service provider and request the specific parameter values you require.The Frame Relay network provider will set up your service and assign DLCI numbers to each PVC.

Frame Relay Local Router ID - Symbolic name assigned by the system

administrator to identify a particular Emulex Frame Relay router. The ID is arbitrary and provides a way to track or reference a particular Emulex Frame Relay router. The Number of partner routers connected using Frame Relay is also important.

Physical Type - The type of connection between the Frame Relay switch

and the Emulex Frame Relay router. (for example, V.35 or RS-232).

Interface Speed - External or internal. Internal speeds vary with the

driver used. For example, if you have an application that must

Frame Relay Configuration 6-5

communicate with three remote sites using a minimum of 32 Kbps sustained bandwidth, the physical interface must be able to support at least 3 x 32 Kbps = 96 Kbps. You should also consider traffic pattern characteristics (bursty or sustained) when specifying interface speed.

Encoding Option - Corresponds to the encoding set on the physical line

to which the Emulex Frame Relay router is attached. It can be NRZI (nonreturn to zero inverted) or NRZ (nonreturn to zero).

Destination (Partner) - Destination name at the remote end of a PVC

that connects communication partners.

DLCI - Number-Data Link Connection Identifier number assigned by the

Frame Relay network service provider for each PVC.

When you have completed all the planning steps for the Frame Relay connections, configure your Emulex Frame Relay software as described below.

6-6 Chapter 6

Configuring the Network Interface

To configure network interface parameters for Emulex Frame Relay software, load the INETCFG Internetworking Configuration menu:

1) At the server prompt, type

LOAD INETCFG <Enter>

The Internetworking Configuration menu is displayed.

Figure 6-1 Internetworking Configuration

2) Select Network Interfaces, then press <Enter>

The Network Interfaces window is displayed.

Figure 6-2 Network Interfaces

3) The network interfaces for the Emulex DCPx86i/e adapter will be

displayed. Each interface is associated with a physical port. Select the port (interface) for configuration and press <Enter>.

Frame Relay Configuration 6-7

4) Select Frame Relay (EMX F Relay) from the Available Media, then

press <Enter>. The DCP_link Configuration

menu is displayed.

Frame Relay Network lnterface

5) Press <Enter> to display a list of the Emulex DCPx86i/e adapters that are

installed.

6) Select the adapter you wish to configure and press <Enter>.

7) Press <Enter> to display the

Interface Options menu. The PAL# will be

displayed. If a different PAL# is to be used, install the corresponding files first and then select the correct PAL# from the list.

8) Press <Enter> to choose the Data Encoding option, NRZ or NRZI.

9) In the Interface Speed field, press <Enter> to display a list of line

clocking rates. Choose External for modem operation. Generally, the service provider will be DCE and the default “External” will be used.

10) Interface Status: Press <Enter> to select the Interface Status (normally

Enabled).

NOTE: The Interface Status field is most often used to test

a particular adapter configuration by disabling other adapters, which prevents them from loading.

11) DLCI Values: Displays the configured DLCI (Data Link Connection

Identifier). Press <Ins> to add a new DLCI number as assigned by the Frame Relay provider.

12) Check the Parameter Group to ensure all selections match the

requirements of your service provider.

In general, the factory default parameters should be adequate for most applications. Most installations can limit the updates to these parameters.

To make changes to the above parameters, highlight the field in the

Relay Network Interface Configuration

menu which requires modification

Frame

and select the appropriate value for that parameter:

User Data Size field allows the configuration of the maximum user data

frame, in bytes, that can be received.

6-8 Chapter 6

Send Queue Limit specifies the maximum number of outbound data

packets that can be queued to this port for transmission. When the queue limit is exceeded, the most recently queued outbound packets are dropped.

The value ranges from 0 to 512 packets with a factory default of 100 packets. Selecting 0 disables the queue limit thereby allowing unlimited queue depth.

NOTE: The User Data Size should be smaller than the

absolute frame size accommodated by the network, i.e., less than the Maximum Physical Packet Receive Size configured in the STARTUP.NCF file. Verify that all destinations support the same Maximum Physical Packet Receive Size.

NOTE: When utilizing unlimited queue depth, monitor the

server performance and total traffic constantly. Be especially careful of conditions that can impact memory usage and adversely affect buffer table allocation in the NetWare environment.

Parameter Group field specifies the type of link management required.

− Annex D Parameters (factory default)

− LMI Parameters

− No DLCI Parameters

Both LMI and Annex D provide similar management facilities except that Annex D enables an unrequested status commands from the network.

Select No DLCI Parameters for back-to-back or point-to-point Frame Relay configurations.

Parameter Group Configuration field applies to both Annex D and

The LMI link management.

Frame Relay Configuration 6-9

Full Status Enquiry Counter specifies the number of standard status

enquiries to exchange before issuing a full status inquiry from the network. The value ranges from 1 to 255 with a factory default of 6 enquiries. A full status enquiry response from the network updates the Frame Relay network and link information tables.

Error Threshold Counter specifies the maximum number of error

events detected within the most recent monitored events (specified by the Monitored Event Counter parameter). If this counter is exceeded, an alarm is generated.

The counter must be less than or equal to the Monitored Event Counter. The value ranges from 1 to 10 with an LMI factory default of 3 events and an Annex D factory default of 3 events.

Monitored Event Counter specifies the number of most recent

consecutive exchanges to be monitored by the router. The values ranges from 1 to 10, with a factory default of 4 events.

Status Polling Timer specifies the number of seconds between

consecutive status enquiries initiated by the router to the network. At the specified time interval, the router requests a sequence number exchange status. If the router does not receive a status message response within the specified polling time, an error is detected.

The value ranges from 5 to 30, with an LMI factory default of 10 seconds and an Annex D factory default of 10 seconds.

After completing all the Frame Relay parameter modifications, press <Esc> and select Yes to save the changes to the network interface configuration.

The Network Interfaces screen will be displayed showing the port as enabled. Press <Esc> to return to the Internetworking Configuration menu and continue with the following sections.

6-10 Chapter 6

Configuring WAN Call Directory

The WAN Call Directory is a list of WAN Call Destination configurations to use for each virtual circuit. You must create at least one WAN Call Destination configuration for each destination. WAN Call Destination configurations contain parameters to be applied by Emulex Frame Relay software when establishing and maintaining calls to the destination.

Only permanent call configurations are supported in the current Emulex Frame Relay implementation. This type of connection is suited for use with dynamic routing protocols such as RIP or the NetWare Link Services Protocol (NLSP) software.

1) If you are not already in the Internetworking Configuration menu, load

INETCFG from the server prompt:

Figure 6-3.Internetworking Configuration

2) Select WAN Call Directory, then press <Enter>

The Configured Wan Call Destination window appears.

Figure 6-4. WAN Call Destinations

Frame Relay Configuration 6-11

NOTE: If a WAN Call Destination has not been configured,

the list will be empty (as pictured above).

3) Press <Ins> to configure a new WAN Call Destination.

The prompt

New Call Destination Name allows you to enter a name of

up to 47 alphanumeric characters for the new WAN Call Destination.

Figure 6-5 Configure Wan Call Destinations

The WAN Call Destination name entered here is used in other menu options when a WAN Call Destination name needs to be identified. You should use a descriptive name, such as the name of the remote destination or a branch office or store number.

4) Enter a name for the new WAN Call Destination, then press <Enter>.

A list of supported wide area media is displayed.

Figure 6-6 Choose a Supported Wide Area Medium

These are media types that have been generated through the INETCFG Network Interfaces menu. If you have not yet configured a Frame Relay interface, then Frame Relay is not available for WAN Call Destinations.

6-12 Chapter 6

NOTE: If you have not configured any Network Interfaces

before attempting to configure a WAN Call Destination, you receive this message:

WAN network interfaces must be configured before WAN Call Destinations may be created.

5) Select

EMX F Relay as the wide area medium. The Frame Relay Call

Destination Configuration

Figure 6-7 Call Destination Configuration

menu is displayed:

Interface Name: Press <Enter> to select the Network interface that has

been defined for EMX F Relay.

Circuit Type: Permanent, the default, is the only option available.

DLCI Number: Press <Enter> to select the local DLCI (circuit number)

entered in the Network Interfaces screen.

9) After defining all the necessary parameters, press <Esc> and select

Yes

to save the changes to the Frame Relay WAN Call Destination Configuration.

Frame Relay Configuration 6-13

Network Protocols and Bindings

The following sections outline the steps necessary to configure the Network Protocols and Bindings so the interfaces can be used with the LAN and WAN connections just established.

Configuration of protocols and bindings must be completed prior to using the Emulex software.

Configuring Protocol Parameters

1) From the Internetworking Configuration menu, select Protocols and

press <Enter>.

Figure 6-8 Internetworking Configuration

2) The Protocol Configuration menu is displayed.

Figure 6-9 Protocol Configuration

3) From the Protocol Configuration menu, select all desired protocols

needed for support over the WAN link. Each protocol presents a unique menu for its configuration. You should accept the default settings.

6-14 Chapter 6

NOTE: Most installations can function properly with the

factory default parameters. For non-standard applications, refer to the

3.0 Advanced Configuration and Management

Guide

Binding Network Protocols to a WAN Interface

After adding and configuring the desired protocols outlined above, complete the following steps to bind a given protocol, such as IPX, to the WAN interface and to select a permanent WAN Call Destination (if applicable):

Novell NetWare MPR

1) From the Internetworking Configuration menu, select

Bindings then

press <Enter>.

Figure 6-10 Internetworking Configuration

2) A new window displays a list of the Configured Protocol To Network

Interface Bindings.

Figure 6-11 Configured Protocol to Bindings

3) Press <Ins> to display a list of the configured protocols.

Frame Relay Configuration 6-15

4) Select the desired protocol (e.g., IPX), then press <Enter>.

5) From the Network Interface menu, select a configured WAN interface

port, then press <Enter> to bind the protocol to that port. A new window displays the parameters for binding the protocol you have

chosen to the selected WAN interface.

Figure 6-12 Binding IPX

6) Press <Enter> to select a Permanent WAN Call Destination.

7) Press <Ins> to add a permanent call to the interface.

Figure 6-13 Wan Call Destination Entry

9) Press <Enter> to select a configured WAN call destination. The

Configured WAN Call Destinations screen will be displayed reflecting the selection.

6-16 Chapter 6

9) Highlight the desired WAN Call Destination, then press <Enter>.

Press <Esc> until you are prompted to save IPX Bind Parameters. Answer Yes to save and exit.

Figure 6-14 Configured Wan Call Destinations

NOTE: If no permanent WAN Call Destinations have been

defined for this interface, an error message will be displayed.

10) Press <Esc> again to return to the

menu.

To initiate any of the newly defined bindings on the WAN interface, issue the REINITIALIZE SYSTEM command at the server/router console OR bring down the server/router and restart.

To implement changes to an existing binding to a WAN interface, you must issue the UNBIND IPX FROM <interface_name> command at the server/router console, and then bring down and restart the server/router.

What’s Next?

After configuring the Frame Relay WAN connections, refer to chapter 7 to:  Configure the X.25 WAN connections.

Internetworking Configuration

X.25 Configuration

Chapter 7

INTRODUCTION................................................................................................................7-2

Virtual Circuit Service...............................................................................................................7-3

Logical Channel Numbers.........................................................................................................7-4

Diagramming Your X.25 Network............................................................................................7-5

Planning Your X.25 Network....................................................................................................7-5

Frame Level Parameters........................................................................................................7-5

Packet Level Parameters .......................................................................................................7-6

Logical Channel Numbers.........................................................................................................7-8

Emulex X.25 User Facilities......................................................................................................7-9

CONFIGURING THE X.25 NETWORK INTERFACE................................................7-10

Modifying/Creating a Profile...................................................................................................7-13

Local DTE Address.................................................................................................................7-15

X.25 Authentication Options...................................................................................................7-15

CONFIGURING THE WAN CALL DIRECTORY.......................................................7-17

Expert Call Configuration........................................................................................................7-22

NETWORK PROTOCOL AND BINDING.....................................................................7-24

Configuring Protocol Parameters.............................................................................................7-24

Binding Network Protocols to a WAN Interface.....................................................................7-25

7-2 Chapter 7

Introduction

Emulex X.25 software operates in a NetWare server or NetWare router/bridge PC environment and provides services for NetWare products and other applications (including independent developer applications) requiring wide area connectivity

Emulex X.25 uses the 1984 CCITT X.25 Recommendation, which defines the interaction between data terminal equipment (DTE) and data circuitterminating equipment (DCE) of a packet-switching network.

In general the end user equipment (mainframe, pad, server) is DTE and the service provider (X.25) is DCE. In the illustration we see an example of a call established between two DTE connections.

IBM Compatible Novell Server

DTE DTEDCEDCE

X.25

DTE and DCE are both responsible for establishing, maintaining, and terminating the connection. The X.25 protocol primarily services between a DTE/DTE pair providing the DCE connection.

As described earlier the Emulex X.25 implements the 1984 CCITT X.25 recommendations, including the level 1 (physical), level 2 (frame), and level 3 (packet), along with several library modules. All three levels are generally configured as either DTE or all three as DCE though exceptions can occur. For example a DCE which accepts clock signals from a modem would have level 1 configured as DTE ( interface speed set to external).

Emulex X.25 interface runs in conjunction with NetWare MultiProtocol Router 3.0 and supports a wide variety of other proprietary software platforms.

Virtual Circuit Service

X.25 uses two mechanisms, providing a logical path between end points, called virtual circuits. A virtual circuit provides a connection-oriented service, similar to that of circuit switching but with the following exceptions:

• Limited to a connection between two end points.

• Economical statistical multiplexing for establishing a logical path

through the network.

There are two virtual circuits types: switched virtual circuits (SVCs) and permanent virtual circuits (PVCs). An SVC is a dynamically established virtual circuit using “call setup” and “call clearing” procedures. A PVC is a permanent, network-assigned virtual circuit that requires no call setup or clearing and operates like a logical leased line.

Using mixed protocols, the router can maintain multiple connections using SVCs between multiple sites. SVCs can be set up to operate automatically or on demand as data and call requests dictate. The router can automatically establish and disconnect on-demand IP connections using SVCs.

The types of connections supported by Emulex X.25 for various protocols are shown in the following table.

X.25 Configuration 7-3

Protocol PVC Permanent

On-Demand SVC

SVC

IPX X X X IP X X RFC 1356 APPLETALK X X X BRIDGE X X

A permanent SVC is established at initialization and is left in a connected state until the user or application brings it down. An on-demand SVC is established only when data is present for the associated virtual circuit and is brought down after the data has been transmitted and the configured idle timer has expired. An on-demand SVC remains down until more data is queued up to be sent, at which time the connection is reestablished.

Once a virtual circuit is established, data packets using this circuit are automatically sent to the appropriate destination

7-4 Chapter 7

Logical channels differentiate the virtual circuits supported by the packet level. Each packet is associated with a logical channel which is mapped to the appropriate destination of the virtual circuit. Multiple connections are provided simultaneously by multiplexing virtual circuits over the access line. This enables a more effective use of the access circuit for the available bandwidth and the traffic density for each logical channel.

Note: Only one PVC or SVC can be established at a time on

each logical channel.

Logical Channel Numbers

The logical channel number is embedded in a 12 bit field within the packet. For SVCs, the association between a logical channel identifier and a particular virtual circuit is accomplished at call setup time when the identifier is chosen from a pool of unused identifiers. The logical channel number is determined by the X.25 service provider for that particular network subscription.

At network subscription time, the user specifies the number of logical channels needed for both SVCs and PVCs by designating ranges of logical channel numbers. Emulex X.25 configuration uses the decimal equivalent of the complete 12-bit Logical Channel Identifier in two subfields: the Logical Channel Group (4 bits) and the Logical Channel Number (8 bits).

Within any of the following categories, the range of available logical channels must be continuous. Each successive range of logical channel numbers must be numerically higher than the previous range.

In increasing order, the logical channel ranges are:

1) PVCs

2) SVCs supporting only calls from the network (inbound SVC)

3) SVCs supporting calls from and to the network (two-way SVC)

4) SVCs supporting only calls to the network (outbound SVC)

NOTE: The total number of logical channel on all ports on

an Emulex card should not exceed 255.

Diagramming Your X.25 Network

To ensure that all connections to the X.25 network are properly diagrammed, complete these step:

1) Diagram the existing X.25 network showing all router access points and

mark the X.25 addresses.

2) Draw each type of connection from the local router to its corresponding

partner.

For PVC-type connections, show the LCN assigned by the X.25 network service provider and the partner name.

For SVC-type connections, list the partner names.

Planning Your X.25 Network

To ensure that all aspects of your planned connections to the X.25 network are covered, complete the following steps:

For each location that a router attaches to the X.25 network, specify the following parameters:

− Physical interface required (for example, V.35 or RS-232)

X.25 Configuration 7-5

− Internal interface speed required (for example, 9600 or 19200)

This value is needed only when the clocking is generated internally; otherwise, clocking comes from the modem.

Number of partner routers which will be connected using X.25 and whether a PVC or an SVC is required for each.

− Packet size required (for example, 128 bytes or 256 bytes)

Emulex X.25 Router ID (at top of page) - Symbolic name assigned by

the system administrator to identify a particular Emulex X.25 router. The ID provides a way to track or reference a particular Emulex X.25 router.

Frame Level Parameters

Sequencing Modulo - Specifies the numbering of sequential frames

allowed in a Data-Link layer window. Modulo 8 is specified for 1984 CCITT X.25 Specifications.

Window Size (k) - Determines the maximum number of

unacknowledged frames that can be received or sent before requiring an acknowledgment by the remote destination.

7-6 Chapter 7

Maximum Frame Size (Nl) - Determines the maximum frame size (in

octets) allowed to be received on the link. It is automatically configured from the packet size and maximum packet size information.

Retry Count (N2) - Determines the maximum number of times a frame

should be retransmitted because of the expiration of the Retry Timer (Tl). A large value for this parameter increases the probability of a correct transfer between the DTE and DCE. A small value permits faster detection of a permanent error condition.

Retry Time-out (TI) - Determines the time, in seconds, to wait for an

acknowledgment of the oldest transmitted frame. If no acknowledgment is received within this set time, an attempt is made to determine the status of the remote device.

Disconnect Time-out (T3) - Displays the value of the T3 timer. After

attempting to connect the link by sending N2 Set Asynchronous Balanced Mode (SABM) frames on TI expiration, the Data-Link layer continues sending SABM frames when the T3 timer expires. This setting isn’t configurable.

Idle Time-out (T4) - Specifies the amount of time the local DTE waits

(when a link becomes idle) before attempting to poll the partner node for status. If the partner node does not respond to the polls, the link is reset and all current virtual calls are cleared or reset. This setting isn’t configurable.

Frame Node Type - The X.25 frame level configures DCE/DTE

protocol handshaking. Generally, an X.25 service provider will require DTE.

Packet Level Parameters

Local DTE Address- Specifies the X.25 address (up to 15 digits) of the

local DTE. It should match the address assigned by your attached network. This address is included in the Calling Address field of the outbound Call Request packets.

Version - Emulex X.25 specifically supports 1984 CCITT X.25

Recommendation

Role - Determines whether you use DTE or DCE procedures for packet

layer operation in the Logical Channel Number (LCN) assignment.

X.25 Configuration 7-7

When establishing a connection to an X.25 network, you must set this parameter to DTE (the default value) if you are connecting to a X.25 service provider.

Default Inbound/Outbound Packet Size - The Inbound Packet uses the

default packet size for a inbound call unless another packet size is specified. Set this value to correspond to your network subscription. The Outbound Packet determines the maximum out going data packet size when a call is established without

the Flow Control Negotiation

parameter. The default Outbound Packet Size should be a value that is agreed upon by the PDN and the remote DTE.

Sequencing Modulo - Control over the numbering of sequential data

packets allowed in a window. Emulex X.25 only allows Modulo 8.

Default Window Size - Specifies the default value of the maximum

number of sequentially numbered data packets that can be transmitted by the local DTE without receiving an acknowledgment at any given time.

When a virtual circuit is established without flow control negotiation, this value is used as an outbound window size. You should set this parameter to the value agreed upon by the PDN.

Note: The following timers and counters are not

configurable.

T20 (Restart Response Timer) - Determines the amount of time, in

seconds, that the local DTE waits when it issues a Restart Request packet to receive a restart confirmation or restart indication. When the time limit expires, the Restart Request packet is retransmitted.

T21 (Call Response Timer) - Specifies the amount of time, in seconds,

that the DTE waits for a response to an outbound Call Request packet.

T22 (Reset Response Timer) - Specifies the amount of time, in

seconds, that the DTE waits for a response to a Reset Request packet.

T23 (Clear Response Timer - Specifies the amount of time, in seconds,

that the DTE waits for a response to a Clear Request packet.

T24 (Ace-Send Timer) - Specifies the amount of time, in seconds, that a

DTE waits when a packet carrying a valid acknowledgment is sent. This timer is used to ensure that no acknowledgment is lost. If the timer

expires, an RR (Receiver Ready) packet is sent.

Emulex DCP-link User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Preface

Chapter 1 Introduction

Chapter 2 Hardware Configuration

Chapter 3 Installation and Cabling

Chapter 4 Software Installation

Chapter 5 Software Configuration

Chapter 6 Frame Relay Configuration

Chapter 7 X.25 Configuration

Chapter 8 Contacting Emulex

Appendix A Diagnostic Programs

Product Support

Audience for Advanced Configuration Guide

User Guide Conventions

DCPx86i/e Terminology

Related Documentation

NetWare Guides (Included with DCP_link)

Protocol Guides

Emulex Guides

Chapter 1

Hardware Requirements

Software Requirements

What’s Next?

Chapter 2

Factory Default Settings

Base I/O Address

SW1 - Base I/O Address Settings

Host Interrupt Level (IRQ Setting)

DCPx86i/e Adapter Configuration

DCP286i-SBC Adapter Configuration

Jumper Settings

Software Compatibility Level

Control Register 4 Read Option

Window Group Select

Memory Size

Setting Data Clock Direction (DTE or DCE)

What’s Next?

DCP386i Adapter Configuration

Jumper Settings

PC I/O Channel Check

Window Group Select

What’s Next?

DCP486e Adapter Configuration

Jumper Settings

Window Group Select

What’s Next?

DCP386i/486e Daughterboard Settings

8-Port RS-232 Daughterboard

DTE/DCE Selection

8-Port RS-422/X.21 Daughterboard

Setting DTE or DCE Operation

What’s Next?

Chapter 3

Installing the Emulex Adapter

Cabling Connections

Factory Default Settings

DCP286i-SBC Adapter Cables

DCP386i/486e Daughterboard Cabling

RS-232 Cabling

RS-422/X.21 Cabling

Optional Cable Drawings

Loopback Plug Options

R-S232/EIA-530 Loopback Plug (DB25F)

V.35 Loopback Plug Winchester Male

X.21 Loopback Plug DBI5F

DCP286i-SBC Adapter Cables

RS-232 Cable Assembly

RS-422/530 Cable Assembly

RS-423 Cable Assembly

RS-485 Cable Assembly

V.35 Cable Assembly

X.21 Cable Assembly

RS-232 Standard Cable

RS-232 Null-Modem Cable (Crossover)

RS-423/RS-485 Null Modem Cable

V.35 Null Modem Cable

X.21 Null Modem Cable