frame relay module -...

ACE-2002/2002E/202

Installation and Operation Manual

Frame Relay Module

ACE-2002/2002E/202 Frame Relay Module

Installation and Operation Manual

Notice This manual contains information that is proprietary to RAD Data Communications Ltd. ("RAD"). No part of this publication may be reproduced in any form whatsoever without prior written approval by RAD Data Communications.

Right, title and interest, all information, copyrights, patents, know-how, trade secrets and other intellectual property or other proprietary rights relating to this manual and to the ACE-2002/2002E/202 and any software components contained therein are proprietary products of RAD protected under international copyright law and shall be and remain solely with RAD.

ACE-2002/2002E/202 is a registered trademark of RAD. No right, license, or interest to such trademark is granted hereunder, and you agree that no such right, license, or interest shall be asserted by you with respect to such trademark.

You shall not copy, reverse compile or reverse assemble all or any portion of the Manual or the ACE-2002/2002E/202. You are prohibited from, and shall not, directly or indirectly, develop, market, distribute, license, or sell any product that supports substantially similar functionality as the ACE-2002/2002E/202, based on or derived in any way from the ACE-2002/2002E/202. Your undertaking in this paragraph shall survive the termination of this Agreement.

This Agreement is effective upon your opening of the ACE-2002/2002E/202 package and shall continue until terminated. RAD may terminate this Agreement upon the breach by you of any term hereof. Upon such termination by RAD, you agree to return to RAD the ACE-2002/2002E/202 and all copies and portions thereof.

For further information contact RAD at the address below or contact your local distributor.

International Headquarters RAD Data Communications Ltd. 24 Raoul Wallenberg St. Tel Aviv 69719 Israel Tel: 972-3-6458181 Fax: 972-3-6498250 E-mail: [email protected]

U.S. Headquarters RAD Data Communications Inc. 900 Corporate Drive Mahwah, NJ 07430 USA Tel: (201) 529-1100, Toll free: 1-800-444-7234 Fax: (201) 529-5777 E-mail: [email protected]

© 1998-2003 RAD Data Communications Ltd. Publication No. 123-203-02/03

mailto:[email protected]


ACE-2002/2002E/202 Frame Relay Module Installation and Operation Manual i

Contents

Chapter 1. Introduction 1.1 Overview .......................................................................................................... 1-1

Versions...................................................................................................................1-2 Applications.............................................................................................................1-2

1.2 Physical Description .......................................................................................... 1-3 LED Indicators .........................................................................................................1-3 Connectors ..............................................................................................................1-3

1.3 Functional Description ...................................................................................... 1-4 Timing Modes..........................................................................................................1-4 Flow Control............................................................................................................1-6 Network Interworking ..............................................................................................1-7 Service Interworking ................................................................................................1-8 Alarms Statistics .......................................................................................................1-9 Local Management Interface (LMI) .........................................................................1-10 Traffic Management...............................................................................................1-11

1.4 Technical Specifications .................................................................................. 1-12 V.35 Interface........................................................................................................1-12 X.21 Interface ........................................................................................................1-13 RS-530 Interface....................................................................................................1-14

Chapter 2. Installation and Operation 2.1 Installing ACE-2002/2002E/202 Frame Relay Module........................................ 2-1

Inserting and Removing Modules .............................................................................2-1 2.2 Interfaces and Connectors................................................................................. 2-2

Grounding ...............................................................................................................2-2 Location of Connectors ............................................................................................2-2 Cables .....................................................................................................................2-2

2.3 Operating ACE-2002/2002E/202 Frame Relay Module.................................... 2-12

Chapter 3. Configuration 3.1 Introduction ...................................................................................................... 3-1 3.2 Overview of Menu Operations.......................................................................... 3-1

Navigating ...............................................................................................................3-1 3.3 Parameters and Screens .................................................................................... 3-3

General ...................................................................................................................3-3 Configuration...........................................................................................................3-3 Performance Monitoring ........................................................................................3-18

Chapter 4. Diagnostics 4.1 Error Detection ................................................................................................. 4-1

Front Panel LEDs .....................................................................................................4-1 Working with the Alarm Buffer.................................................................................4-1

4.2 Troubleshooting ................................................................................................ 4-2 4.3 Diagnostics Tests ............................................................................................... 4-3

External Loopback ...................................................................................................4-3

Table of Contents

ii ACE-2002/2002E/202 Frame Relay Module Installation and Operation Manual

Internal Loopback....................................................................................................4-3

Table of Contents

ACE-2002/2002E/202 Frame Relay Module Installation and Operation Manual iii

List of Figures 1-1. Typical ACE-2002/2002E/202 Frame Relay Application Using FRF.5 ......................... 1-2 1-2. Typical ACE-2002/2002E/202 Frame Relay Application Using FRF.8 ......................... 1-2 1-3. Single-Port Frame Relay Module................................................................................ 1-3 1-4. Four-Port Frame Relay Module.................................................................................. 1-3 3-1. Terminal Menu Tree for ACE-2002/2002E/202 with Frame Relay Module ................. 3-2 3-2. Configuration Menu .................................................................................................. 3-3 3-3. General Configuration Menu ..................................................................................... 3-4 3-4. Download/Upload Menu........................................................................................... 3-5 3-5. Download/Upload Using XMODEM Menu................................................................ 3-5 3-6. Application Code Download Confirmation Message .................................................. 3-6 3-7. Application Code Download Window....................................................................... 3-6 3-8. Send File Window..................................................................................................... 3-6 3-9. Download/Upload Using TFTP Menu ........................................................................ 3-7 3-10. TFTP Transfer Status and Error Window................................................................... 3-8 3-11. Physical Layer Configuration Menu.......................................................................... 3-9 3-12. Frame Relay Configuration Menu ............................................................................ 3-9 3-13. User Slot Configuration Menu ............................................................................... 3-10 3-14. User Port Configuration Menu............................................................................... 3-11 3-15. Interworking Configuration Menu.......................................................................... 3-13 3-16. Frame Relay Configuration Menu .......................................................................... 3-13 3-17. Frame Relay Descriptor Menu ............................................................................... 3-14 3-18. Frame Relay VC Configuration Menu .................................................................... 3-16 3-19. Performance Monitoring Menu.............................................................................. 3-18 3-20. Ports Status Menu.................................................................................................. 3-18 3-21. Physical Layer Frame Relay Window ..................................................................... 3-19 3-22. VC Statistics Menu................................................................................................. 3-21 3-23. AAL5 Statistics Window......................................................................................... 3-22 4-1. External Loopback..................................................................................................... 4-3 4-2. Internal Loopback ..................................................................................................... 4-3

Table of Contents

iv ACE-2002/2002E/202 Frame Relay Module Installation and Operation Manual

List of Tables 1-1. Timing Mode Changes............................................................................................... 1-5 1-2. Flow Control Support by Interface ............................................................................. 1-6 2-1. CBL-4FR-DCE-V.35 Octopus Adapter Cable Pin Assignment ..................................... 2-3 2-2. CBL-FR-DCE-V.35 Adapter Cable Pin Assignment ..................................................... 2-4 2-3. CBL-4FR-DCE-X.21 Octopus Adapter Cable Pin Assignment ..................................... 2-5 2-4. CBL-FR-DCE-X.21 Adapter Cable Pin Assignment...................................................... 2-6 2-5. CBL-4FR-DCE-RS530 Octopus Adapter Cable Pin Assignment................................... 2-7 2-6. CBL-FR-DCE-RS530 Adapter Cable Pin Assignment................................................... 2-8 2-7. V.35 (V.35 Connector) Cross-Cable Pin Assignments ................................................. 2-9 2-8. X.21 (DB-15) Cross-Cable Pin Assignments .............................................................. 2-10 2-9. RS-530 (DB-25) Cross-Cable Pin Assignments.......................................................... 2-11 3-1. User Slot Configuration Parameters ......................................................................... 3-10 3-2. User Slot Configuration Parameters ......................................................................... 3-11 3-3. Frame Relay Descriptor Parameters ......................................................................... 3-14 3-4. Frame Relay VC Configuration Parameters............................................................... 3-16 3-5. Physical Layer Frame Relay Port Status Alarms......................................................... 3-21 4-1. Troubleshooting Chart ............................................................................................... 4-2

Overview 1-1

Chapter 1 Introduction

1.1 Overview

ACE-2002/2002E/202 offers internetworking functionality between Frame Relay and ATM with its dedicated Frame Relay module. In ACE-2002/2002E, the Frame Relay module can be installed in slots 2, 3 or 4. In ACE-202, the Frame Relay module can be installed in slot 2 only.

The Frame Relay module allows mapping VCC to DLCI (Data Link Connection Identifier) (up to 123 VCCs to DLCI mapping per Frame Relay port, 492 per module). This mapping capacity supports both Network Interworking Functions (FRF.5) and Service Interworking Functions (FRF.8).

The Frame Relay module supports a single port or four ports.

The Frame Relay module supports different data rates per port with a maximum data rate of 4.096 Mbps.

The Frame Relay module operates in DCE and DTE modes.

ACE-2002/2002E can be equipped with up to three Frame Relay modules and ACE-202 with one. This enables up to 12 Frame Relay ports for the ACE-2002/2002E and four Frame Relay ports for the ACE-202.

Chapter 1 Introduction ACE-2002/2002E/202 Frame Relay Module Installation and Operation Manual

1-2 Overview

Versions ACE-2002/2002E/202 Frame Relay Module is a standalone module available with the following interfaces:

• Single/Four-port Frame Relay, V.35 interface

• Single/Four-port Frame Relay, RS-530 interface

• Single/Four-port Frame Relay, X.21 interface.

Applications A typical application of ACE-2002/2002E/202 Frame Relay Module using FRF.5 is shown in Figure 1-1.

A typical application of ACE-2002/2002E/202 Frame Relay Module using FRF.8 is shown in Figure 1-2

ATMFrameRelay

ACE-2002/2002E/202ACE-2002/2002E/202 FRAD

ATMFrameRelay

FRADATM Network

Figure 1-1. Typical ACE-2002/2002E/202 Frame Relay Application Using FRF.5

ATM

ATM Switch

ATMFrameRelay

ACE-2002/2002E/202FRADATM Network

Figure 1-2. Typical ACE-2002/2002E/202 Frame Relay Application Using FRF.8

ACE-2002/2002E/202 Frame Relay Module Installation and Operation Manual Chapter 1 Introduction

Physical Description 1-3

1.2 Physical Description

The various front panels of ACE-2002/2002E/202 Frame Relay Module are shown in Figure 1-3 and Figure 1-4.

FR-N

SYNC

Figure 1-3. Single-Port Frame Relay Module

1 2

434FR-N

SYNC

Figure 1-4. Four-Port Frame Relay Module

LED Indicators The front panel of ACE-2002/2002E/202 Frame Relay Module includes a SYNC LED indicator per port. The SYNC LED indications for all interfaces are the same for all channels. The indications are summarized below:

• ON – the port is synchronized (no alarm)

• OFF – during local alarm, signal loss (LOS) is detected

• Blinks – during remote alarms, On when AIS pattern (all 1’s) is detected.

Connectors An SCSI 68-pin connector on the Frame Relay module is connected to an adapter cable that terminates into one or four ports. The connectors at the ends of the adapter cable fit the physical interface being used.

For DTE output, an additional cross cable that converts the output to DTE must be connected to each of the terminal ends of the adapter cable. This cable can be ordered separately.

The connector pinouts are described in Chapter 2.


1-4 Functional Description

1.3 Functional Description

The Frame Relay module supports two modes of interworking functional (IWF) operation:

• Network Interworking (FRF.5), which enables tunneling of Frame Relay frames over the ATM network.

• Service Interworking (FRF.8), which enables mapping of Frame Relay services (using RFC 1490) to ATM services, based on RFC 1483.

Upon creation of mapping between Frame Relay connection (DLCI, Frame Relay port) and ATM connection (VPI, VCI), the user can select the mapping to be used either as Network Interworking or Service Interworking.

Timing Modes High data rate transmission over long distances can incur some synchronization problems. ACE-2002/2002E/202 timing modes offer several solutions to these problems.

ACE-2002/2002E/202 Frame Relay Module has the following clock options, which can be used either individually or per port to solve timing problems:

• Change the clock polarity (in both DCE and DTE modes)

• Change the receive clock source (in DCE mode only).

The clock source option is not applicable to the DTE mode, because the Frame Relay module clock is a slave to an external DCE clock.

Transmit Clock Options

In DCE and DTE modes, data can be generated at the falling edge of the clock, (Normal mode, the default), or at the rising edge of the clock (Inverse mode). These options are user-selectable. The ability to change the clock edge can compensate for large delays introduced by the cables connecting the DCE (ACE-2002/2002E/202) and DTE devices.

RAD recommends that this parameter be modified only if there are receiving problems at the device opposite the ACE, such as loss of synchronization or CRC errors.

Note

Note


Functional Description 1-5

Receive Clock Options

In DCE and DTE modes, data can be sampled from the receive clock at the rising edge (Normal mode, the default), or at the falling edge (Inverse mode). These options are user-selectable. The ability to change the clock edge can compensate for large delays introduced by the cables connecting the DCE and DTE devices.

When working in DCE mode, an additional option is available for solving problems introduced by the round trip delay caused by cables and DTE equipment. The receive clock source can be set to the ACE-2002/2002E/202 Transmit (internal) clock (default) or the Receive (external) clock returned from the DTE device.

The recommended steps for changing the timing mode are as follows:

Table 1-1. Timing Mode Changes

For Problems In: Solution

Device opposite ACE-2002/2002E/202 Change the transmit clock polarity to Inverse

Receive side of ACE-2002/2002E/202 (DTE mode)

Change clock polarity to Inverse.

Receive side of ACE-2002/2002E/202 (DCE mode)

With ACE-2002/2002E/202 receive clock set to Transmit (Internal), change the clock polarity to Inverse.

If the problem continues, change the clock polarity back to Normal and change the receive clock to DTE clock.

If the problem persists, change the clock polarity to Inverse.



Flow Control Flow control has two operation modes, Off or On. When Off, ACE-2002/2002E/202 ignores the flow control signals. When On, ACE-2002/2002E/202 exercises flow control on signals in each protocol as described in Table 1-2:

Table 1-2. Flow Control Support by Interface

Signal Name

Description V.35 Support

X.21 Support

RS-530 Support

RTS Request to Send Yes Yes Yes

CTS Clear to Send Yes Yes Yes

DCD Data Carrier Detect Yes – Yes

DSR DCE Ready Yes – Yes

DTR DTE Ready Yes – Yes

TM Test Mode No – No

LL Local Loopback No – No

RL Remote Loopback No – No

The LL and RL functions (local or remote) are not supported in the line, but can be supported via the ACE-2002/2002E/202 user interface. For the DSR and DTR signals, DSR is shorted to DTR in the cable.

Note



Network Interworking The Network Interworking mode (standard FRF.5) is selected whenever you want to tunnel Frame Relay frames over ATM network, that is two Frame Relay entities\networks are connected over an ATM network.

In this case, ACE-2002/2002E/202 performs mapping between the Frame Relay port and DLCI to an ATM VCC as follows:

• In the Frame Relay to ATM direction: The Frame Relay frame is encapsulated over an AAL5 frame, and transferred over the ATM network.

The VCC on which the AAL5 frame is transferred, is the one that matches the mapping of the Frame Relay port from which the frame was received and the DLCI that was carried in it.

The FR-SSCS DLCI (the DLCI that is carried over the ATM network) is set according to the configuration of the Frame Relay VCC. If the desire is that over the ATM network the FR-SSCS DLCI will always be the default (1022), then enter the FR-SSCS DLCI of the FR VC the default value.

When two Frame Relay network\entities are not managed with the same DLCIs, the user can replace the DLCI coming form the FR side to be any other legal DLCI number (16–991) by setting the FR-SSCS DLCI to the desired value.

• In the ATM to Frame Relay direction: The AAL5 header is dropped and the FR-SSCS DLCI is examined as follows:

If the FR-SSCS DLCI equals 1022 (the default FR-SSCS DLCI), then before forwarding the frame to the Frame Relay port, the DLCI will be overwritten according to the configuration of the Frame Relay VCC. After that the frame will be forwarded to the Frame Relay port that matches the ATM VCC.

If the FR-SSCS DLCI is different from 1022, then the frame is forwarded with the same DLCI to the Frame Relay port that matches the ATM VCC.

In the ATM to Frame Relay direction, the DLCI is overwritten only if the FR-SSCS DLCI in the received frame was the default one (1022).

DE to CLP Mapping

ACE-2002/2002E/202 supports DE (Discard Eligibility) to CLP (Cell Loss Priority) mapping in accordance with the Network Interworking standard (FRF.5 sec 4.4).

You can choose the kind of mapping to be performed on each PVC.

FECN to EFCI Mapping

ACE-2002/2002E/202 supports FECN (Forward Explicit Congestion Notification) to EFCI (Explicit Forward Congestion Indicator) mapping in accordance with the Network Interworking standard (FRF.5 sec 4.5.1).


Note



BECN Mapping

ACE-2002/2002E/202 does not support mapping from the EFCI ATM congestion bit to the BECN (Backward Explicit Congestion Notification) Frame Relay congestion bit. The BECN bit is always copied unchanged.

Service Interworking The Service Interworking mode (standard FRF.8) is selected whenever you want to map Frame Relay frames Into ATM network.

In the Service Mode of operation there is No Frame Relay entity in the Far End so all Frame Relay frames, and Frame Relay special functionality should be mapped into the ATM world using its Built-In features.

In this case, ACE-2002/2002E/202 performs mapping between the user DLCI and an ATM VCC in such way that the Frame Relay frame is translated to an AAL-5 frame in accordance with the frame type that was carried in it, that is mapping of RFC-1490 to RFC-1483 and vice versa.

Frame Format Mapping

Routed or Bridged PDUs transferred over FR VCs are encapsulated in accordance with standard FRF.3. ATM AAL-5 PVCs are encapsulated in accordance with standard RFC 1483.

The mapping between the two requires examining the payload header of the incoming ATM AAL5 PDU, or the Frame Relay Q.922 PDU in order to determine the Frame Relay type, then to overwrite the incoming header with the outgoing header, as follows:

• In the Frame Relay to ATM direction: The Frame Relay header of the received frame is dropped and the header of the frame is examined in order to discover the protocol type. If the protocol type is one of the supported types, the frame is translated to RFC 1483 and encapsulated into an AAL-5 frame to be sent over to the ATM network.

• In the ATM to Frame Relay direction: In this case, the AAL-5 header is dropped, and the frame type carried in the incoming frame is translated into the Frame Relay Network in accordance with standard FRF.3. In case an unsupported type arrives the frame is discarded.

A transparent mode is also supported (in accordance with standard FRF.8), in which no translation is performed between the RFC 1490 and RFC 1483.

DE to CLP Mapping

ACE-2002/2002E/202 supports DE to CLP mapping in accordance with the Service Interworking standard (FRF.8 sec 4.2).




FECN to EFCI Mapping

ACE-2002/2002E/202 supports FECN to EFCI mapping in accordance with the Service Interworking standard (FRF.8 sec 4.3).


BECN to EFCI Mapping

ACE-2002/2002E/202 does not support mapping from the EFCI ATM congestion bit to the BECN Frame Relay congestion bit. The BECN bit is always copied unchanged.

Upper Layer User Protocol Support

ACE-2002/2002E/202 supports the following encapsulation mapping:

• Bridged PDUs - 802.3, 802.4, 802.5 and FDDI (FRF.8 sec 5.3.1.1)

• Routed PDUs – IP PDUs and other routed PDUs (FRF.8 sec 5.3.1.2 part 1 and 3).

Alarms Statistics ACE-2002/2002E/202 Frame Relay Module detects LOF (Loss Of Frame) synchronization alarm conditions.

ACE-2002/2002E/202 Frame Relay Module gathers ATM network statistics at the frame and cell level. At the frame level, the module gathers the following statistics:

• Frames Received – the total number of correct frames received from the ATM network.

• Errored Frames Received – The total number of frames with errors received from the ATM network, including CRC, Alignment, Length, Time-out and Abort errors.

• Frames Transmitted – the total number of correct frames transmitted to the ATM network.

The counters at the cell level are standard for all modules.



Local Management Interface (LMI) The LMI is a signaling protocol running in the Frame Relay network using reserved DLCIs (0 or 1023). The LMI enables both the user and the network to gather information about the Frame Relay Network. In addition the LMI enables the user and network to signal each other several activities pertaining to the virtual circuits on the link and the status of the physical link itself.

Each Frame Relay module port supports an LMI signaling protocol. Each port can be configured to support one of the following protocols:

• LMI (superceded by standard FRF.1.1)

• Annex A (ITU Q.933)

• Annex D (ANSI T1.617).

• None – NO LMI support

When setting the protocol, you will also indicate the type of operation that needs to be supported: User, Network, User+Network (both).

LMI Messages

The ACE-2002/2002E/202 Frame Relay Module LMI available messages are:

• Status Enquiry message: sent only by the user.

• Status messages: a response to the Status Enquiry, sent only by the network.

• Full status request: sent by the user

• Full Status report: sent by the network.

• Single PVC messages: sent by the network whenever a PVC status is was changed.

After being activated for the Frame Relay port the LMI mechanism will perform the following periodic polling according to the type that was chosen:

• The user sends a status enquiry messages every 10 seconds (this timer is being referred to as T391 in the LMI standards).

The network responds with a status message that confirms the Link integrity.

• After 6 times the user should send a Full Status request (this timer is being referred to as N391 in the LMI standards).

The network will respond with a Full status message, which provides information on all PVCs (active, inactive).



Mapping of LMI Messages

Since the Frame Relay PVC is transferred on an ATM VCC, mapping is required in order to assure that the VC status in the ATM world will be carried to the Frame Relay world and vice versa. The following management procedures are applied on both FRF.5 and FRF.8 VCC types.

• Frame Relay PVC: ACE-2002/2002E/202 starts sending AIS OAM cells on the ATM VCC if one of the following is met:

The DLCI is declared Inactive from the Frame Relay side

The Link of the relevant Frame Relay port is down.

ACE-2002/2002E/202 stops sending AIS cells when the PVC is back in Active status, and the link is up again.

• ATM PVC: ACE-2002/2002E/202 updates the Frame Relay side on an inactive PVC status (via the full status message, or the update PVC message) in the following cases:

AIS OAM cells are being received on the associated VCC

The Link of the relevant ATM slot\port is down.

The status will be changed to active when No AIS cells are being received on the associated PVC and the ATM link is up again.

Creating or deleting of PVC will result in updates that will be carried to the frame relay side via the full status report message.

Traffic Management ACE-2002/2002E/202 Frame Relay Module enables traffic management. Traffic management provides the ability to manually map the CIR and EXCESS parameters of the Frame Relay into ATM parameters.

ACE-2002/2002E/202 offers full policing\shaping\spacing on all VCCs opened between the ACE-2002/2002E/202 Frame Relay Module and the ATM network, according to the ATM traffic management support offered in the device for all other VCCs.


1-12 Technical Specifications

1.4 Technical Specifications

The specifications of ACE-2002/2002E/202 Frame Relay Module depend on the interface used: V.35, X.21 or RS-530.

V.35 Interface

Connector V.35 female

Flow Control Supported

Operation Mode

DCE Adapter cable

DTE Requires cross cable connected to each port of the adapter cable. The ports must be set to DTE mode.

Supported Rates

56K Resolution Nx56 kbps up to 3.088 Mbps


Cable Length (recommended)

Data Rate≤ 2.048 Mbps 60m/197 ft

2.048 Mbps < Rate ≤ 4.096 Mbps 40m/130 ft


Technical Specifications 1-13

X.21 Interface

Connector DB-15 female


Error Detection CRC Error Detection

Operation Mode

DCE Adapter cable

DTE Requires cross cable connected to each port of the octopus cable. The ports must be set to DTE mode.

Supported Rates




Data Rate≤ 2.048 Mbps 60m/197 ft

2.048 Mbps < Rate ≤ 4.096 Mbps 40m/130 ft


1-14 Technical Specifications

RS-530 Interface

Connector DB-25 female


Error Detection CRC Error Detection

Operation Mode

DCE Adapter cable

DTE Requires cross cable connected to each port of the adapter cable. The ports must be set to DTE mode.

Supported Rates




All Data Rates 60m/197 ft

Installing ACE-2002/2002E/202 Frame Relay Module 2-1

Chapter 2 Installation and Operation

2.1 Installing ACE-2002/2002E/202 Frame Relay Module

Inserting and Removing Modules ACE-2002/2002E/202 Frame Relay Module can be installed in slots 2, 3 or 4 of ACE-2002/2002E and in slot 2 of ACE-202 unit.

To insert a module:

1. Power down the unit.

2. Pull out the screws of the module front panel so that they protrude slightly.

3. Insert the module onto the sliders and push the module slowly into the unit (ensure that the module is correctly aligned on the sliders).

4. When a module is almost completely inserted, press hard until the module clicks into the unit.

5. Tighten the screws on the module’s front panel.

To remove a module:

When removing modules, do NOT leave open slots in an operating ACE-2002/2002E/202 unit. A vacant slot should always be closed up with a blank panel.

1. Perform a slot shut down as follows: In the Main Menu select 2 (Configuration).

In the Configuration menu select 2 (Physical Layer Configuration).

In the Physical Layer Configuration menu select 7 (Slot Shut Down).

Enter the number of the slot to be shut down.

Use the spacebar to set the slot to Not Active.

2. Unscrew the screws on the module front panel.

3. Pull the screws hard until the module dislodges from the unit (please do not jerk the module out).

4. Slowly slide the module out of the unit.

Warning

Chapter 2 Installation and Operation ACE-2002/2002E/202 Frame Relay Module Installation and Operation

Manual

2-2 Interfaces and Connectors

2.2 Interfaces and Connectors

Grounding

This instrument can be rendered dangerous by any interruption of the protective (grounding) conductor (inside or outside the instrument) or by disconnecting the protective earth terminal. Intentional interruption is prohibited, and the manufacturer is not responsible for the consequences of such tampering. Before switching ON this instrument and before connecting any other cable, the protective earth terminals of this instrument must be connected to the protective ground conductor of the power cord.

Location of Connectors ACE-2002/2002E/202 Frame Relay Module connectors are located on the front of the module.

ACE-2002/2002E/202 Frame Relay Module uses a SCSI 68-pin connector. An adapter cable is connected to the SCSI connector. A cross-cable is required for DTE output to a master DCE device.

Make sure the cable is connected in the correct direction.

Cables ACE-2002/2002E/202 Frame Relay Module supports X.21, RS-530, and V.35 interfaces.

Four-Port Modules

For all interfaces, each line (with the exception of the ground) exits the interface on two wires, labeled “a” and “b”. These form a twisted pair. The lines are duplicated for each port, yielding four duplicate twisted pairs, with each assigned two SCSI pins.

The SCSI connector is connected to an octopus adapter cable with four arms, one for each port. The duplicate twisted pairs are assigned the same two pin numbers in each of the four arms.

The following adapter cables are used with the four-port modules:

• CBL-4FR-DCE-X.21

• CBL-4FR-DCE-RS530

• CBL-4FR-DCE-V.35.

Note

Warning

ACE-2002/2002E/202 Frame Relay Module Installation and Operation Manual Chapter 2 Installation and

Operation

Interfaces and Connectors 2-3

Single-Port Modules

The following adapter cables are used with the single-port modules:

• CBL-FR-DCE-X.21

• CBL-FR-DCE-RS530

• CBL-FR-DCE-V.35.

V.35 Adapter Cables

Table 2-1 lists the pin assignments of the CBL-4FR-DCE-V.35 adapter cable used with the four-port Frame Relay modules (V.35 interface).

The V.35 connector is an ISO 2110 female connector. The DCE-READY and DTE-READY signals are connected in the V.35 connector, as follows: DCE-READY to Pin E and DTE-READY to Pin H (see Table 2-1).

Table 2-1. CBL-4FR-DCE-V.35 Octopus Adapter Cable Pin Assignment

Line SCSI Line (Twisted Pair) Port 1

SCSI Line (Twisted Pair) Port 2



V.35 Line All Ports

Shield – – – – A

Ground (One Wire)

26 60 17 51 B

rxd_a rxd_b

34 68

25 59

16 50

8 42

R T

txd_a txd_b

33 67

24 58

15 49

7 41

P S

rx_clk_a rx_clk_b

32 66

23 57

14 48

6 40

V X

tx_clk_a tx_clk_b

31 65

22 56

13 47

5 39

Y AA

exc-a exc_b

30 64

21 55

12 46

4 38

U W

cts_a cts_b

29 63

20 54

11 45

3 37

D

rts_a rts_b

28 62

19 53

10 44

2 36

C

dcd_a dcd_b

27 61

18 52

9 43

1 35

F

DCE-READY Connect

Null Null Null Null E, H

DTE-READY Connect

Null Null Null Null H, E

Note


Manual


Table 2-2 lists the pin assignments of the CBL-FR-DCE-V.35 adapter cable used with the single-port Frame Relay modules (V.35 interface).

Table 2-2. CBL-FR-DCE-V.35 Adapter Cable Pin Assignment

Line SCSI Line (Twisted Pair) V.35 Line

Shield – A

Ground (One Wire)

51 B

rxd_a rxd_b

8 42

R T

txd_a txd_b

7 41

P S

rx_clk_a rx_clk_b

6 40

V X

tx_clk_a tx_clk_b

5 39

Y AA

exc-a exc_b

4 38

U W

cts_a cts_b

3 37

D

rts_a rts_b

2 36

C

dcd_a dcd_b

1 35

F

DCE-READY Connect Null E, H

DTE-READY Connect Null H, E


Operation


X.21 Adapter Cables

Table 2-3 lists the pin assignments of the CBL-4FR-DCE-X.21 adapter cable used with the four-port Frame Relay modules (X.21 interface).

The X.21 connector is an ISO 4903 female connector.

Table 2-3. CBL-4FR-DCE-X.21 Octopus Adapter Cable Pin Assignment





X.21 Line (DB-15) All Ports

Shield - - - - 1

Ground (One Wire)

26 60 17 51 8

rxd_a rxd_b 34 68

25 59

16 50

8 42

4 11

txd_a txd_b 33 67

24 58

15 49

7 41

2 9

rx_clk_a rx_clk_b

32 66

23 57

14 48

6 40

7 14

tx_clk_a tx_clk_b

31 65

22 56

13 47

5 39

6 13

exc-a exc_b 30 64

21 55

12 46

4 38

Null

cts_a cts_b

29 63

20 54

11 45

3 37

5 12

rts_a rts_b

28 62

19 53

10 44

2 36

3 10

dcd_a dcd_b 27 61

18 52

9 43

1 35

Null

Note


Manual


Table 2-4 lists the pin assignments of the CBL-FR-DCE-X.21 adapter cable used with the single-port Frame Relay modules (X.21 interface).

Table 2-4. CBL-FR-DCE-X.21 Adapter Cable Pin Assignment

Line SCSI Line (Twisted Pair) X.21 Line (DB-15)

Shield - 1

Ground (One Wire)

51 8

rxd_a rxd_b 8 42

4 11

txd_a txd_b 7 41

2 9

rx_clk_a rx_clk_b 6 40

7 14

tx_clk_a tx_clk_b 5 39

6 13

exc-a exc_b 4 38

Null

cts_a cts_b

3 37

5 12

rts_a rts_b

2 36

3 10

dcd_a dcd_b 1 35

Null


Operation


RS-530 Adapter Cables

Table 2-5 lists the pin assignments of the CBL-4FR-DCE-RS530 adapter cable used with the four-port Frame Relay modules (RS-530 interface).

The RS-530 connector is an ISO 2593 connector. The DSR and DTR signals are connected in the DB-25 connector, as follows: Pin 20 to Pin 6 and Pin 22 to Pin 23 (see Table 2-5).

Table 2-5. CBL-4FR-DCE-RS530 Octopus Adapter Cable Pin Assignment





RS-530 Line (DB-25) All Ports

Shield – – – – 1

Ground (One Wire)

26 60 17 51 7

rxd_a rxd_b 34 68

25 59

16 50

8 42

3 16

txd_a txd_b 33 67

24 58

15 49

7 41

2 14

rx_clk_a rx_clk_b

32 66

23 57

14 48

6 40

17 9

tx_clk_a tx_clk_b

31 65

22 56

13 47

5 39

15 12

exc-a exc_b 30 64

21 55

12 46

4 38

24 11

cts_a cts_b

29 63

20 54

11 45

3 37

5 13

rts_a rts_b

28 62

19 53

10 44

2 36

4 19

dcd_a dcd_b 27 61

18 52

9 43

1 35

8 10

DSR-DTR Connect

Null Null Null Null 20 to 6

DSR-DTR Connect

Null Null Null Null 22 to 23

Note


Manual


Table 2-6 lists the pin assignments of the CBL-FR-DCE-RS530 adapter cable used with the single-port Frame Relay modules (RS-530 interface).

Table 2-6. CBL-FR-DCE-RS530 Adapter Cable Pin Assignment

Line SCSI Line (Twisted Pair) RS-530 Line (DB-25)

Shield – 1

Ground (One Wire)

51 7

rxd_a rxd_b 8 42

3 16

txd_a txd_b 7 41

2 14

rx_clk_a rx_clk_b 6 40

17 9

tx_clk_a tx_clk_b 5 39

15 12

exc-a exc_b 4 38

24 11

cts_a cts_b

3 37

5 13

rts_a rts_b

2 36

4 19

dcd_a dcd_b 1 35

8 10

DSR-DTR Connect Null 20 to 6

DSR-DTR Connect Null 22 to 23


Operation


A cross-cable to convert DTE output to DCE is required when ACE-2002/2002E/202 is working in DTE mode and transmits to a DTE master external device. The pin assignments are identical in all ports.

The cross-cables for each interface are:

• CBL-X.21-DTE/FR

• CBL- RS-530-DTE/FR

• CBL- V.35-DTE/FR

All cross-cables must be shielded. The Ground and Shield lines are single, not twisted.

V.35 Cross-Cable Pin Assignments

The pin assignments for the V.35 cross-cable are given in Table 2-7.

Table 2-7. V.35 (V.35 Connector) Cross-Cable Pin Assignments

Line V.35 To DCE Male Connector (Twisted Pair)

V.35 Male Connector To ACE-2002/2002E/202

Shield A A

Ground (One Wire)

B B

rxd_a rxd_b R T

P S

txd_a txd_b P S

R T

rx_clk_a fx_clk_b V X

U W

tx_clk_a tx_clk_b Y AA

V X

exc-a exc_b U W

Y AA

cts_a cts_b

D (Single Wire)

C

rts_a rts_b

C (Single Wire)

D

dcd_a dcd_b F (Single Wire)

F

DCE-READY (DSR)

E (Single Wire)

E

DTE-READY (DTR)

H (Single Wire)

H

Note


Manual


X.21 Cross-Cable Pin Assignments

The pin assignments for the X.21 (DB-15) cross-cable are given in Table 2-8.

Table 2-8. X.21 (DB-15) Cross-Cable Pin Assignments

Line To DCE DB-15 Male

X.21 DCE Side To ACE-2002/2002E/202 DB-15 Male

Shield 1 1

Ground (One Wire) 8 8

rxd_a rxd_b

4 11

2 9

txd_a txd_b

2 9

4 11

rx_clk_a fx_clk_b

7 14

6 13

tx_clk_a tx_clk_b

6 13

7 14

cts_a cts_b

5 12

3 10

rts_a rts_b

3 10

5 12

exc-a exc_b

Null Null

dcd_a dcd_b

Null Null


Operation


RS-530 Cross-Cable Pin Assignments

The pin assignments for the RS-530 (DB-25) cross-cable are given in Table 2-9.

Table 2-9. RS-530 (DB-25) Cross-Cable Pin Assignments

Line RS-530 To DCE (Twisted Pair) DB-25 Male

RS-530 To ACE-2002/2002E/202 DB-25 Male

Shield 1 1

Ground (One Wire)

7 8

rxd_a rxd_b

3 16

2 14

txd_a txd_b

2 14

3 16

rx_clk_a fx_clk_b

17 9

24 11

tx_clk_a tx_clk_b

15 12

17 9

cts_a cts_b

24 11

15 12

rts_a rts_b

5 13

4 19

exc-a exc_b

4 19

5 13

dcd_a dcd_b

8 10

8 10

DTR 20 23

20 23

DSR 6 22

6 22


Manual

2-12 Operating ACE-2002/2002E/202 Frame Relay Module

2.3 Operating ACE-2002/2002E/202 Frame Relay Module

ACE-2002/2002E/202 Frame Relay Module operates independently once it is powered up, and has no special operating procedures. The operating status of a module port is indicated via its corresponding SYNC LED indicator on the front panel. The SYNC LED indications are described in Chapter 1.

Overview of Menu Operations 3-1

Chapter 3 Configuration

3.1 Introduction

ACE-2002/2002E/202 Frame Relay Module can be configured either locally using an ASCII terminal connected to the ACE-2002/2002E/202 control port, or by using Telnet or an NMS located on the ATM network. This chapter assumes that you are familiar with ASCII terminal startup and menu screens. If you are not familiar with these subjects, see the ACE-2002/2002E or ACE-202 System Installation and Operation Manual.

Configuration screens are embedded in the terminal menu tree of ACE-2002/2002E/202. This chapter describes only those menu items relevant to the HDLC module. For all other parameters, see the ACE-2002/2002E and ACE-202 System Installation and Operation Manual.

The menu tree allows you to:

• View general system information.

• Set Frame Relay module parameter configuration.

• Monitor Frame Relay module performance.

3.2 Overview of Menu Operations

Navigating Navigate the ACE-2002/2002E/202 terminal menus to set and view configuration parameters for the HDLC module. Figure 3-1 maps the ACE-2002/2002E/202 Frame Relay terminal menus. Use this tree as a reference aid while performing configuration and control functions.

Chapter 3 Configuration ACE-2002/2002E/202 Frame Relay Module Installation and Operation Manual

3-2 Overview of Menu Operations

Main Menu

1. System 2. Configuration

2. Physical LayerConfiguration

1. Slot #1 - MediaDependent


3. 4 Frame Relay

1. SlotConfiguration

2. PortConfiguration


4. InterworkingConfiguration

4. Frame RelayConfiguration

6. Frame RelayDescriptor

7. Frame RelayVC Configuration

3. PerformanceMonitoring

1. Port Status

1. Physical LayerStatus

2. ATM LayerStatus

3. VC Statistics

5. AAL5 Statistics

4. PPP Mode

Figure 3-1. Terminal Menu Tree for ACE-2002/2002E/202 with Frame Relay Module

ACE-2002/2002E/202 Frame Relay Module Installation and Operation Manual Chapter 3 Configuration

Parameters and Screens 3-3

3.3 Parameters and Screens

General The relevant menus for the Frame Relay module are:

• Configuration

• Performance Monitoring.

Configuration

CONFIGURATION

1. General Configuration >

2. Physical Layer Configuration >

3. ATM Layer Configuration >

4. Interworking Configuration >

ESC. Exit

Select item from the menu.

Figure 3-2. Configuration Menu

The relevant options for the Frame Relay module are:

• General Configuration (type 1): View and define general system configuration.

• Physical Layer Configuration (type 2): View and define physical layer configuration

• Interworking Configuration (type 4): View and define the Frame Relay layer configuration.

Main Menu ↓

2. Configuration


3-4 Parameters and Screens

General Configuration

ACE-2002/2002E/202 Frame Relay Module needs an application code to be installed in the ACE-2002/2002E/202 so that the four-port module will be supported. The General Configuration menu enables to download the Frame Relay software. The file that needs to be installed is:

• HDLC-3-0.cmp: This file is needed for the physical layer configuration of the four-port module.

GENERAL CONFIGURATION

1. Management Configuration >

2. ASCII Terminal Configuration >

3. Time/Date Update >

4. Download/Upload >

5. Set Default Parameters

6. File System >

7. Loopback Timeout (Min) 5

ESC. Exit


Figure 3-3. General Configuration Menu

The relevant option for the Frame Relay module is Download/Upload.

Main Menu ↓

2. Configuration ↓

1. General Configuration



Download/Upload

The following paragraphs provide the necessary procedures for downloading the Frame Relay software.

DOWNLOAD/UPLOAD

1. Download/Upload using XMODEM >

2. Download/Upload using TFTP >

ESC. Exit


Figure 3-4. Download/Upload Menu

If you want to return to the original main application code version after using this function, reboot ACE-2002/2002E/202, enter the Boot menu and choose the File Swap option, as described in Appendix B of the ACE-2002/202 System Installation and Operation Manual.

The Boot Code should not be tampered with. It should ONLY be handled by authorized personnel or after contacting RAD Technical Support.

To download the Frame Relay application code using XMODEM:

1. Type 1 from the Download/Upload menu. The Download/Upload Using XMODEM menu is displayed.

DOWNLOAD/UPLOAD using XMODEM

1. File Application code

ESC. Exit D. Download


Figure 3-5. Download/Upload Using XMODEM Menu

Note

Warning

Main Menu ↓


1. General Configuration

↓ 4. Download/

Upload



2. Type 1 and using the spacebar select Application code if not already selected.

3. Type D to download the application code. A confirmation message appears.

+------------------------------------------------------+

| Application code download. CONTINUE??? (Y/N) |

+------------------------------------------------------+

Figure 3-6. Application Code Download Confirmation Message

4. Type Y. The Application Code Download window appears.

APPLICATION CODE DOWNLOAD

APPLICATION CODE DOWNLOAD STARTING...

PLEASE START XMODEM TRANSFER THROUGH THIS PORT.

( Download Binary Compressed File - xxx.CMP !!!)

Please enter UpLoad/Send command NOW!

Figure 3-7. Application Code Download Window

5. Enter the appropriate command for file transfer. For example, if you are using HyperTerminal, perform the following: Select Transfer Send File... from the menu toolbar. The Send File

window appears.

Figure 3-8. Send File Window

Press Browse... and select the cmp file that you want to download.

Verify that Xmodem is selected under Protocol.

Press Send. The download procedure begins. When download is complete, the ACE unit will reboot.



To download the Frame Relay application code using TFTP:

1. Type 2 from the Download/Upload menu. The Download/Upload using TFTP menu is displayed.

DOWNLOAD\UPLOAD using TFTP

1. File name HDLC-3-0.cmp

2. Command Software download

3. Server IP IP address

4. Retry timeout 15

5. Total timeout 60

6. User File name

7. View transfer status

ESC. Exit S. Save & Start action

Figure 3-9. Download/Upload Using TFTP Menu

2. Type 1 and then type the file name to be downloaded or uploaded.

3. Type 2 and using the spacebar, select Software download.

4. Type 3 and then type the IP address of the server from which the file is to be downloaded from.

5. Type 4 and then type the desired retry timeout period in seconds (0 to 10000).

6. Type 5 and then type the desired total timeout period in seconds (0 to 10000), which is the maximum time allowed for attempted transmission.

7. Skip 6 (not relevant for Software download).

8. Type S to save the parameters and start the transmission process.



9. Type 7 to view the transfer status in real-time. The TFTP Transfer Status and Error window appears.

TFTP TRANSFER STATUS AND ERROR

STATUS: Transferring Data

ERRORS: No Error

Use <ESC>-key to exit

Figure 3-10. TFTP Transfer Status and Error Window

The TFTP Transfer Status and Error window is updated every second. The screen is read-only with these options: Status: No Operation, Connecting, Transferring Data, Ended on Time Out,

Ended OK or Error.

Errors: Unavailable (no host IP), No Error, File Not Found, Illegal TFTP Operation, Unknown Transfer ID, Illegal PDU Size, Illegal File Mode, No Empty Connection, No Empty UDP Port or Server Overflow.



Physical Layer Configuration

PHYSICAL LAYER CONFIGURATION

1. Slot #1 - SONET/SDH 155 over Singlemode SH >

2. Slot #2 - SONET/SDH 155 Dual over SM 13L ST >

3. Slot #3 – 4 FRAME RELAY >

4. Slot #4 – 1 FRAME RELAY >

5. Source Clock Configuration >

6. Phy Aps Configuration >

7. Slot Shut Down >

ESC. Exit


Figure 3-11. Physical Layer Configuration Menu

The relevant option is Slot #n (type 1, 2, 3 or 4) where you can configure the physical layer of the Frame Relay module.

The following configuration procedures illustrate only the four-port HDLC module configuration process. Configuration menus of the single-port modules are almost identical to those of the four-port module, except for the user port selection, where 1 is the only allowed value for the port number.

4 Frame Relay

FRAME RELAY CONFIGURATION

1. Slot Configuration >

2. Port Configuration >

ESC. Exit

Select item from the menu:

Figure 3-12. Frame Relay Configuration Menu

Note

Main Menu ↓


2. Physical Layer

Configuration

Main Menu ↓


2. Physical Layer Configuration

↓ 1, 2, 3 or 4



To set the Frame Relay physical layer parameters:

1. Type 1 to set the physical layer parameters of the specific slot. The Physical Layer Configuration for the slot appears.

USER SLOT CONFIGURATION

1. Physical Interface Type V35

2. Rate resolution Nx64K

3. Tx Clock source Internal

ESC. Exit


Figure 3-13. User Slot Configuration Menu

Table 3-1. User Slot Configuration Parameters

Key Parameter Possible Values Remarks

1 Physical Interface Type

V.35, X.21 or RS-530 Make sure the proper adapter cable for the protocol chosen is connected to the standard connector.

Default: V.35

2 Rate resolution Nx64K or Nx56K This rate resolution option is relevant only in DCE timing mode.

See Chapter 1: Technical Specifications for rate definitions

Default: Nx64K

3 Tx Clock source Internal

External

The transmit clock is generated by an on-board oscillator (default).

The transmit clock is taken from the recovered Network clock that is, the user-port transmit clock is tied to the Network clock.

This parameter appears only when Timing Mode (in User Port Configuration menu) is set to DCE.



2. Type 2 to set the physical layer parameters of the specific port. The Physical Layer Configuration for the port appears.

USER PORT CONFIGURATION

1. Port Number 1

2. Terminal Mode DCE

3. Loopback State Disable

4. Tx Clock polarity Normal

5. Rx Clock polarity Normal

6. Flow control Disable

7. Line rate (Kbps) 2048

8. Rx clock source TX_CLK

9. LMI Protocol Annex-A Q933

10. LMI type Network

ESC. Exit


Figure 3-14. User Port Configuration Menu

Table 3-2. User Slot Configuration Parameters


1 Port Number 1 to 4 Select the HDLC port number to be configured.

2 Terminal Mode DCE or DTE Make sure the proper cable for the mode chosen is connected to the standard connector. The DTE mode requires connection of a cross cable between the adapter octopus cable and the external DCE device.

Make sure the cable is connected in the correct direction.

Default: DCE

3 Loopback State Internal

External

Disable

All data received from the ATM network is looped back to the network, and an "all ones" signal is sent to the User port.

All data received from each local device on the Receive line is looped back on the Transmit line back to the device. Data from the ATM network is ignored.

Normal operation (default).

To run diagnostics, set this parameter to Internal or External.



Table 3-2. User Slot Configuration Parameters (Cont.)


4 Tx Clock polarity Normal

Inverse

The data is sampled at the middle of bit time (at the falling edge of the clock).

The transmitted data is sampled at the end of the bit time (at the rising edge of the clock). This mode can be used for high data rates or for a long cable.

Default: Normal

5 Rx Clock polarity Normal or Inverse Same as Tx Clock polarity.

6 Flow control Enable

Disable

The HDLC module samples RTS/CTS flow control signals.

When Terminal Mode is set to DCE, CTS (DCE) and DCD (DTE) flow control signals are applied.

When Terminal Mode is set to DTE, the RTS signal is applied.

Flow control is disabled (default). In this mode, the CTS (DCE) or RTS (DTE) is always asserted.

7 Line rate (Kbps) Enter a value according to one of the following formulas:

• Nx56 (whre 1<n<32) or 3584

• Nx64 (whre 1<n<32) or 4096

The maximum value for RS-530 protocol is 2048 kbps.

If the rate you enter is not supported, the system automatically adjusts it to the nearest acceptable lower rate and displays it on screen.

This parameter appears only when Timing Mode is set to DCE.

8 Rx clock source TX_CLK

DTE_CLK

The Receive Clock Source is the system Transmit clock.

The Receive Clock Source is the DTE device connected to the link.

This parameter appears only when Timing Mode is set to DCE (except for X.21 protocol).

RAD recommends not to use the DTE clock at the 8.192 MHz rate.

9 LMI Protocol LMI (superseded by FRF 1.1), Annex A Q.933, Annex D ANSI T1.617 or None

Define the Local Management Interface (LMI) protocol for the Frame Relay port.

10 LMI type User, Network or User+Network

Perform the Local Management Interface (LMI) for the Frame Relay port.

Default: User+Network.



Interworking Configuration

INTERWORKING CONFIGURATION

1. CES E1T1 VC Configuration >

2. CES E3T3 VC Configuration >

3. Bridge/Router VC Configuration >

4. Frame Relay Configuration >

5. HDLC Configuration >

ESC. Exit


Figure 3-15. Interworking Configuration Menu

The relevant option for the Frame Relay module is Frame Relay Configuration.

Frame Relay Configuration

FRAME RELAY CONFIGURATION

6. Frame Relay Descriptor >

7. Frame Relay VC Configuration >

ESC. Exit


Figure 3-16. Frame Relay Configuration Menu

Main Menu ↓


4. Interworking Configuration

Main Menu ↓


4. Interworking Configuration

↓ 4. Frame Relay Configuration



Frame Relay Descriptor

To set the Frame Relay configuration parameters:

1. Type 6 to set the Frame Relay descriptor. The Frame Relay Descriptor menu appears.

FRAME RELAY DESCRIPTOR

1. FR Descriptor Index 1

2. DE-CLP Mapping Mode 1

3. Congestion Mapping Mode 1

4. Encapsulation Mapping Transparent

ESC. Exit


Figure 3-17. Frame Relay Descriptor Menu

Table 3-3. Frame Relay Descriptor Parameters


1 FR Descriptor Index

Determine the Frame Relay Descriptor Index

2 DE-CLP Mapping Mode 1

Mode 2Const0

Mode 2Const1

In the Frame Relay to ATM transmission, the DE field will be mapped to the CLP bit of every ATM cell belonging to the frame (in FRF.5 the DE bit will be copied unchanged). In the ATM to Frame Relay transmission, the DE field will be set to 1 if one or more ATM cells has their CLP bit set (in FRF.5 if the DE bit is set in FR-SSCS PDU coming from the ATM, it will be set to 1 when forwarded to the FR side).

In the Frame Relay to ATM transmission, no mapping is performed. The CLP bit is set to a constant value of 0, regardless of the DE field (for FRF.5 standard, the DE field is copied unchanged). In the ATM to Frame Relay transmission, no mapping is performed. (for FRF.5 standard, the DE field is copied unchanged. For FRF.8 standard, the DE field is set to a constant value of 0).

In the Frame Relay to ATM transmission, no mapping is performed. The CLP bit is set to a constant value of 1, regardless of the DE field (for FRF.5 standard, the DE field is copied unchanged). In the ATM to Frame Relay transmission, no mapping is performed (for FRF.5 standard, the DE field is copied unchanged. For FRF.8 standard, the DE field is set to a constant value of 1).

The DE-CLP mapping is performed in Tx and Rx directions.

Default: Mode 1.



Table 3-3. Frame Relay Descriptor Parameters (Cont.)


3 Congestion Mapping

Mode 1

Mode 2

In the Frame Relay to ATM transmission, the Forward Explicit Congestion Notification (FECN) field is mapped to the Explicit Forward Congestion Indication (EFCI) field of every ATM cell. In the ATM to Frame Relay transmission, if the EFCI field of one of the ATM cells is set, then the FECN is also set.

In the Frame Relay to ATM transmission, the FECN field is NOT mapped to the EFCI field of every ATM cell. In the ATM towards Frame Relay transmission, if the EFCI field of one of the ATM cells is set than the FECN field will be set.

In FRF.5 we always performs the following:

• In the Frame Relay towards ATM transmission, there is no mapping and the FECN field is copied unchanged.

• In ATM towards Frame Relay transmission, if the EFCI field of one of the ATM cell is set or if the FECN field on the FR-SSCS is set then the FECN field will be set to ON on the Frame Relay side.

The congestion mapping is performed in both directions, in the Frame Relay towards ATM transmission and vice-versa.

The congestion configuration is relevant only for standard FRF.8.

Default: Mode 1.

4 Encapsulation Mapping

Transparent

Translation

Performs no translation.

Performs translation of the following formats:

• BridgedPDus with PID values of: 0X00-01, 0X00-02, 0X00-03, 0X00-04, 0X00-05, 0X00-07, 0X00-08, 0X00-09 and 0X00-0A

• RoutedIp with PID value of: 0X08-00

• otherRouted

The encapsulation configuration is relevant only for standard FRF.8 (service interworking). This procedure is performed for the translation of the encapsulated Protocol Data Unit (PDU) in the Frame Relay towards ATM transmission and vice-versa.

Frame Relay descriptor 1 is a default Frame Relay descriptor and cannot be changed or deleted.

Note



2. Type 7 to set The Frame Relay VC configuration. The Frame Relay VC Configuration menu appears.

FRAME RELAY VC CONFIGURATION

1. ATM SLOT/PORT 1/1

2. VPI 0

3. VCI 100

4. FR SLOT/PORT 4/1

5. DLCI 16

6. Activate On

7. Congestion Control EPD

8. Policing mode Monitoring

9. In TD 1

A. Out TD 1

B. OAM Configuration >

C. Application Mode Network InterWorking

E. FR Descriptor 1

G. FR-SSCS DLCI 1022

ESC. Exit


Figure 3-18. Frame Relay VC Configuration Menu

Table 3-4. Frame Relay VC Configuration Parameters


1 ATM SLOT/PORT This is the slot/port of the ATM endpoint of the cross-connect (network slot/port).

2 VPI Determine the VPI of the ATM endpoint.

3 VCI Determine the VCI of the ATM endpoint.

4 FR SLOT/PORT Determine the Frame Relay Slot/Port, which is the slot/port of the Frame Relay endpoint.

Only one VCC can be set to a specific HDLC port.

5. DLCI Determine the DLCI (Data Link Connection Identifier) to be mapped into or from the ATM VCC.

You cannot assign the same DLCI to different VCCs in the same Frame Relay port.

6 Activate On or NotInService Determine the status of the Frame Relay VC.



Table 3-4. Frame Relay VC Configuration Parameters (Cont.)


7 Congestion Control

None, CLP, EPD or EPD+CLP

Select the congestion control mechanism to be performed when the line is congested.

To change the setting of this parameter, Activate must be set to NotInService.

Default: EPD.

8 Policing mode Monitor, Policing or None

Determine the policing mode to be performed upon data transferred on that cross connection.

Default: Monitor.

9 In TD Determine the in traffic descriptor to be applied on the Rx direction.

A Out TD Determine the out traffic descriptor to be applied on the Tx direction.

B OAM Configuration

C Application Mode Network InterWorking (FRF.5) or Service InterWorking (FRF.8)

select the Application Mode of the Frame Relay-ATM VCC.

This mode can be changed only when the VCC is in NotInService status.

E FR Descriptor Select the Frame Relay Descriptor Index.


G FR-SSCS DLCI The FR-SSCS DLCI is the DLCI that is being carried over ATM in Network Interworking mode.

This option enables the user to remap the DLCI coming from the Frame Relay into a different DLCI that will be carried in the FR-SSCS over ATM. This option is useful in case the Frame Relay Network in the Far End has a different DLCI configuration.




Performance Monitoring

PERFORMANCE MONITORING

1. Port Status >

2. VP Statistics >

3. VC Statistics >

4. VLAN Port Statistics >

ESC. Exit


Figure 3-19. Performance Monitoring Menu

The relevant options for the Frame Relay module are Port Status and VC Statistics.

Port Status

PORT STATUS

1. Physical Layer Status

2. ATM Layer Status

ESC. Exit


Figure 3-20. Ports Status Menu

Main Menu ↓

3. Performance Monitoring

Main Menu ↓


↓ 1. Port Status



The Physical Layer Frame Relay window shows the errors encountered by the physical (PHY) layer counters. These alarm counters count the actual number of errors within an interval, and label seconds as containing errors. These counters are available for each interface in 15-minute intervals (for the last 24 hours, that is 96 intervals).

The bottom portion of the Physical Layer Frame Relay window shows the following indications:

• Start Time: The time at which the currently monitored interval was initiated. It will then be displayed only when monitoring previous intervals.

• Time Since: The elapsed time since the beginning of the current interval. It is then displayed only when monitoring the current interval.

• Slot/Port: Provides the number of the link being monitored. Enter a value from 1 to 4 to display the statistics of the selected Frame Relay module port, out of four links. The physical layer status of each link can be viewed.

• Valid Intervals: The number of valid intervals that can be displayed in the current Link status display.

• Interval Number: The number of the intervals to be displayed. 0 (zero) designates the current interval, which is continuously updated. The elapsed time since the beginning of the interval will then be displayed.

In the Physical Layer Frame Relay window, the P. Previous and N. Next options toggle the display back and forth between the intervals.

These interval indications are important because certain system alarm counters (see below) count the number of seconds during which one or more errors are detected. They do not count the errors themselves.

Other alarm counters count the actual number of errors within an interval and label seconds as containing errors.

The Physical Layer Frame Relay Port Status alarms are shown in Table 3-5.



Table 3-5. Physical Layer Frame Relay Port Status Alarms

Alarm Comments

LOF (Loss of Frame)

The total number of seconds the link is in the LOF alarm state.

Correct Frames Received

The total number of correct frames received from the network.

Errored Frames Received

The total number of frames received with one of the following errors: CRC, Abort or misalignment.

Correct Frames Transmitted

The total number of correct frames transmitted to the Frame Relay line.

Rate (DCE mode only)

The current data rate of the link. For the Frame Relay interface, the data rate is in kbps. The data rate is user-selectable.

Flow Control Status

The current flow control status of the port. The indications are: Active, Not Active and Disabled.

In Active state, flow control is enabled. In Not Active state, flow control is disabled enabled and CTS is deasserted. In Disable state, flow control is disabled.

Mode The current timing mode: DCE or DTE.

DCD, CTS, RTS The indication is ON, OFF or N/A (not applicable).

LMI Oper Status This counter indicates the status of the LMI for the selected Slot/Port. The following values can be displayed:

• On – the LMI protocol is synchronized with the equipment facing it.

• Down - the LMI protocol is not synchronized with the equipment facing it.

• Off – No LMI setting for this Frame Relay port.

VC Statistics

VC STATISTICS

1. Statistics

2. Performance Management

3. Loopback Statistics

4. AAL1 statistics

5. AAL5 statistics

ESC. Exit


Figure 3-22. VC Statistics Menu

The relevant option for the Frame Relay module is AAL5 Statistics.

Main Menu ↓


↓ 3. VC Statistics



To display the AAL5 Statistics:

• Type 5 from the VC Statistics menu.

The AAL5 Statistics window appears.

AAL5 STATISTICS

|

Frames Transmitted To Network: | 0

Frames Received From Network: | 0

Frames Received With CRC Error: | 0

Frames Received With Unknown Protocol: | 0

-------------------------------------------

Time Since: 658 sec -----------------Valid Intervals 0----

1. Interval Number 0

2. Slot/Port 1/1

3. VPI 0

4. VCI 32

ESC. Exit F. Forward connection N. Next Inv

Figure 3-23. AAL5 Statistics Window

The AAL5 statistics are displayed on the network VC slot and port (always ATM slot) opened in Frame Relay VC Configuration.

To show AAL5 statistics relevant to specific VPI and VCI values, enter the VPI and VCI values (2 and 3). Scroll through the available connections by pressing F repeatedly.

The following statistics are collected at the user port only when a HDLC module is installed:

• Frames transmitted to network: The number of frames transmitted to the network

• Frames received from network: The number of correct frames received from the network

• Frames received with CRC error: The total number of frames received with CRC error from the network

• Frames Received With Unknown Protocol: The total number of frames received in an unsupported protocol (relevant for FRF.8 only).

Error Detection 4-1

Chapter 4 Diagnostics Diagnostics for ACE-2002/2002E/202 Frame Relay Module are performed through the unit itself. For detailed information, refer to the Troubleshooting and Diagnostics chapter in the ACE-2002/2002E or ACE-202 System Installation and Operation Manual.

4.1 Error Detection

Front Panel LEDs LED indicators on the front panel indicate the operating status of the ACE-2002/2002E/202 Frame Relay Module. The LED indicators are described in Chapter 1.

Working with the Alarm Buffer ACE-2002/2002E/202 maintains an event log file that stores up to 2000 events. All events are time-stamped. The user can view the contents of the Event Log File via an ASCII terminal or a Network Management Station (NMS). The user can also clear the contents of the Log File.

Table 5-1 of the ACE-2002/2002E or ACE-202 System Installation and Operation Manual presents alphabetically the events types, which appear on the Event Log File, as well as the actions, required to correct the event (alarm) indication.

To correct the reported problem, perform corrective actions from Table 4-1, in the given order, until the problem is corrected. If the problem cannot be fixed by carrying out the listed actions, an authorized RAD technical support engineer MUST check the ACE-2002/2002E/202 Frame Relay Module.

Chapter 4 Diagnostics ACE-2002/2002E/202 Frame Relay Module Installation and Operation Manual

4-2 Troubleshooting

4.2 Troubleshooting

Table 4-1 presents common faults and lists the actions required to correct them.

Table 4-1. Troubleshooting Chart

Fault/Problem Probable Cause Remedial Action

Code download error FRAME RELAY code does not exist or FRAME RELAY code file is not downloaded correctly.

Perform FRAME RELAY software download again.

FRAME RELAY link LED is Off. The cable connected to ACE-2002/202 is not the correct type.

Verify you are using the correct cable, and check that the cable is properly connected in its socket.

Errors encountered on the receive side of the device opposite the ACE-2002/2002E/202

Large delays introduced by the cables connecting the DCE and DTE devices

Change the transmit clock polarity to Inverse (data is generated at the rising edge of the clock).

Errors encounter on the receive side of ACE-2002/2002E/202

Large delays introduced by the cables connecting the DCE and DTE devices

DCE mode: If receive clock is set to Transmit (internal) clock, change the clock polarity to Inverse (data is sampled at the falling edge of the clock). Change the receive clock polarity of the ACE-2002/2002E/202 or change the transmit clock at the device working opposite ACE-2002/2002E/202. If this does not solve the problem, reset the clock polarity to Normal (rising edge), and set the clock source to Receive (external) clock. If the problem still persists, set clock polarity to Inverse. DTE mode: Change the clock polarity to Inverse (data is sampled at the falling edge of the clock).

ACE-2002/2002E/202 Frame Relay Module Installation and Operation Manual Chapter 4 Diagnostics

Diagnostics Tests 4-3

4.3 Diagnostics Tests

ACE-2002/2002E/202 Frame Relay Module maintenance capabilities include external and internal loopbacks.

External Loopback ACE-2002/2002E/202 Frame Relay Module can be set to an external loop to test the connection between the Frame Relay port and Frame Relay devices.

In this mode, data coming from the Relay device is looped back to the device, as shown in Figure 4-1.

Router ACE-2002/202

Figure 4-1. External Loopback

Internal Loopback ACE-2002/2002E/202 Frame Relay Module can be set to an internal loop to test the connection between ACE-2002/202 and the ATM network.

In this mode, data coming from the ATM network is looped back to the ATM network, as shown in Figure 4-2. An "all ones" signal is sent to the user port.

Router ACE-2002/202

All Ones

ATM Network

Figure 4-2. Internal Loopback

Chapter 4 Diagnostics ACE-2002/2002E/202 Frame Relay Module Installation and Operation Manual

4-4 Diagnostics Tests

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