Avaya WAN Lines, WAN Line User Manual

BayRS Version 14.00 Part No. 308648-14.00 Rev 00

September 1999 4401 Great America Parkway

Santa Clara, CA 95054

Configuring WAN Line Services

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The software described in this document is furnished under a license agreement and may only be used in accordance with the terms of that license. A summary of the Software License is included in this document.

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NORTEL NETWORKS is a trademark of Nortel Networks. AN, BCN, BLN, BN, BNX, FRE, LN, and Optivity are registered trademarks and ANH, ARN, ASN, BayRS,

BayStack, BayStream, BCC, and Sy stem 5000 are trademarks of Nortel Networks. All other trademarks and registered trademarks are t he property of their respective owners.

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Use, duplication, or disclosure by the United States Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Sof tware clause at DFARS 252.227-7013.

Notwithstanding any other license agreement that may pertain to, or accompany the delivery of, this computer software, the rights of the United States Government regarding its use, reproduction, and disclosure are as set forth in the Commercial Computer Software-Restricted Rights cl ause at FAR 52.227-19.

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In the interest of improvi ng internal design, operational func tion , a n d/o r re liability , No rtel Ne tworks NA Inc. re serv e s the right to make changes to the products described in this document without notice.

Nortel Networks NA Inc. does not assume any liability that may occur due to the use or application of the product(s) or circuit layout(s) described herein.

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Contents

Preface

Before You Begin .........................................................................................................xxxiii

Text Conventions .........................................................................................................xxxiv

Acronyms ........................... .......................... .......................... ......................... .............. xxxv

Hard-Copy Technical Manuals .................................................................. ...... ....... .... xxxviii

How to Get Help ..........................................................................................................xxxix

Chapter 1 Getting Started

What’s the Default Configuration? ......................................... ...... ...... ....... ...... ....... ...... ...1-2

Summary of WAN Line Configuration Services ..............................................................1-2

Starting the Configuration Tools .....................................................................................1-3

Accessing Line Parameters ............................................................................................1-4

Using the BCC .........................................................................................................1-4

Using Site Manager ..................................................................................................1-5

Chapter 2 Configuring Synchronous Services

Overview of Synchronous Services ................................................................................2-2

Customizing Synchronous Services Using the BCC or

Site Manager ..................................................................................................................2-2

Enabling or Disabling Synchronous Services ..........................................................2-4

Using the BCC ...................................................................................................2-4

Using Site Manager ...........................................................................................2-4

Enabling or Disabling BofL Messages .....................................................................2-5

Using the BCC ...................................................................................................2-5

Using Site Manager ...........................................................................................2-5

Setting the BofL Timeout ..........................................................................................2-6

Using the BCC ...................................................................................................2-6

Using Site Manager ...........................................................................................2-6

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Setting the MTU .......................................................................................................2-6

Using the BCC ...................................................................................................2-7

Using Site Manager ...........................................................................................2-7

Enabling or Disabling Remote Address Filtering ......................................................2-7

Using the BCC ...................................................................................................2-7

Using Site Manager ...........................................................................................2-7

Configuring Clocking Signals ...................................................................................2-8

Setting the Clock Source ...................................................................................2-8

Setting the Internal Clock Speed .......................................................................2-9

Setting the External Clock Speed ....................................................................2-10

Setting the Signal Mode .........................................................................................2-10

Using the BCC .................................................................................................2-11

Using Site Manager .........................................................................................2-11

Enabling or Disabling RTS Signals ........................................................................2-11

Using the BCC .................................................................................................2-11

Using Site Manager .........................................................................................2-11

Enabling or Disabling Burst Count .........................................................................2-12

Using the BCC .................................................................................................2-12

Using Site Manager .........................................................................................2-12

Specifying the Link-Level Protocol .........................................................................2-12

Using the BCC .................................................................................................2-13

Using Site Manager .........................................................................................2-13

Setting the Transmit Window Size ..........................................................................2-13

Using Site Manager .........................................................................................2-13

Setting Minimum Frame Spacing ...........................................................................2-14

Using the BCC .................................................................................................2-14

Using Site Manager .........................................................................................2-14

Specifying Point-to-P oint Addresses ......................................................................2-14

Local Address ..................................................................................................2-16

Remote Address ................ ...... ....... ...... ....... ............................................. ...... .2-1 6

Viewing the Configured WAN Protocol ........................................ ....... ...... ....... ...... .2-1 7

Using the BCC .................................................................................................2-17

Using Site Manager .........................................................................................2-17

Setting Pass-Through Addresses ..........................................................................2-17

Setting the Pass Thru Remote Address ..........................................................2-18

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Setting the Pass Thru Local Address ..............................................................2-18

Setting the CRC Size .............................................................................................2-19

Using the BCC .................................................................................................2-19

Using Site Manager .........................................................................................2-19

Setting the Signaling Method .................................................................................2-19

Using the BCC .................................................................................................2-20

Using Site Manager .........................................................................................2-20

Enabling or Disabling DSR Polling .........................................................................2-20

Using Site Manager .........................................................................................2-20

Setting the Line Coding ..........................................................................................2-21

Using the BCC .................................................................................................2-21

Using Site Manager .........................................................................................2-21

Configuring KG84A Security ..................................................................................2-21

KG84A Cycle ...................................................................................................2-23

KG84A Sync Loss Interval ...............................................................................2-23

KG84A Remote Resync Wait ..........................................................................2-23

KG84A Sync Pulse ..........................................................................................2-24

Specifying the Network Link Level .........................................................................2-24

Using Site Manager .........................................................................................2-24

Setting the Retry Count ..........................................................................................2-25

Using Site Manager .........................................................................................2-25

Setting the Link Idle Timer .....................................................................................2-25

Using Site Manager .........................................................................................2-25

Enabling or Disabling Extended Control ................................................................2-25

Using Site Manager .........................................................................................2-25

Enabling or Disabling Receiver Ready Signals ......................................................2-26

Using Site Manager .........................................................................................2-26

Setting the Cable Type ...........................................................................................2-26

Using the BCC .................................................................................................2-26

Using Site Manager .........................................................................................2-27

Setting the Retry Timer ..........................................................................................2-27

Using Site Manager .........................................................................................2-27

Enabling or Disabling Extended Addressing ..........................................................2-27

Using Site Manager .........................................................................................2-27

Enabling or Disabling Remote Loopback Detection ...............................................2-28

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Using the BCC .................................................................................................2-28

Using Site Manager .........................................................................................2-28

Setting a Priority .....................................................................................................2-28

Using the BCC .................................................................................................2-28

Using Site Manager .........................................................................................2-29

Setting the Hold Down Time ..................................................................................2-29

Using the BCC .................................................................................................2-29

Using Site Manager .........................................................................................2-29

Setting the B Channel Override .............................................................................2-29

Using the BCC .................................................................................................2-30

Using Site Manager .........................................................................................2-30

Setting the IFTF Pattern .........................................................................................2-30

Using Site Manager .........................................................................................2-31

Configuring Asynchronous Services ......................................................................2-31

Setting the WAN Serial Interface Type .............................................................2-31

Setting the Asynchronous Baud Rate ..............................................................2-32

Configuring Polled Asynchronous over TCP/IP Line Parameters ..........................2-32

Setting the Pasync Parity Type ........................................................................2-33

Setting the Pasync Data Bits ...........................................................................2-33

Setting the Pasync Stop Bits ...........................................................................2-33

Setting the Pasync Baud Rate .........................................................................2-34

Editing LAPB Protocol Services ...................................................................................2-34

LAPB Implementation on Nortel Networks Routers ...............................................2-34

LAPB Parameters ...................................................................................................2-35

Enabling or Disabling LAPB Services ..............................................................2-36

Setting the Station Type ...................................................................................2-36

Setting the Control Field ..................................................................................2-37

Setting the Maximum N1 Frame Size ..............................................................2-38

Setting the Window Size ..................................................................................2-38

Setting the Maximum N2 Retry Count .............................................................2-38

Setting the Maximum T1 Acknowledge Timer .................................................2-39

Setting the Maximum T2 Acknowledge Timer .................................................2-39

Setting the Maximum T3 Disconnect Timer .....................................................2-40

Setting the Link Setup Action ..........................................................................2-40

Enabling or Disabling Test Exchange Identification (XID) Frames ...................2-40

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Enabling or Disabling Receiver Ready (RR) Frames .......................................2-41

Selecting the Local Command or Response Address .....................................2-41

Viewing the WAN Protocol ........................... ...... ....... .......................................2-42

Displaying EIA Signals ..................................................................................................2-42

Resetting EIA Signal Status .........................................................................................2-43

Chapter 3 Configuring BayStack AN and ANH Asynchronous Services

Enabling or Disabling the Asynchronous Driver .............................................................3-2

Setting the MTU ..............................................................................................................3-3

Specifying the TCP Start Protocol ..................................................................................3-3

Setting the Remote IP Address ................................................................................3-3

Specifying the Remote Port .....................................................................................3-4

Specifying the Local Port .........................................................................................3-4

Setting the Baud Rate ....................................................................................................3-4

Setting the Idle Timer .....................................................................................................3-5

Setting the TCP Receive Window Size ...........................................................................3-5

Setting the TCP Keepalive Message Interval .................................................................3-5

Setting the TCP Inactive Limit ........................................................................................3-6

Setting the Maximum Transmit Queue Length ................................................................3-6

Setting the Maximum Receive Queue Length ................................................................3-6

Chapter 4 Configuring BayStack DSU/CSU Services

Configuring DSU/CSU Services .....................................................................................4-2

Using the BCC .........................................................................................................4-2

Using Site Manager ..................................................................................................4-2

Customizing DSU/CSU Services Using the BCC or

Site Manager ..................................................................................................................4-3

Setting the Option Mode ..........................................................................................4-4

Using the BCC ...................................................................................................4-4

Using Site Manager ...........................................................................................4-4

Selecting the Transmit Clock Source ........................................................................4-4

Using the BCC ...................................................................................................4-5

Using Site Manager ...........................................................................................4-5

Resetting the Router ................................................................................................4-5

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Using the BCC ...................................................................................................4-5

Enabling or Disabling the 64K Transmit Monitor ......................................................4-6

Using the BCC ...................................................................................................4-6

Using Site Manager ...........................................................................................4-6

Configuring Line Availability .....................................................................................4-6

Using the BCC ...................................................................................................4-6

Setting the Poll Rate .................................................................................................4-7

Using the BCC ...................................................................................................4-7

Resetting the CQMS Counters .................................................................................4-7

Using the BCC ...................................................................................................4-7

Configuring V.54 Loopback Tests ...................................................................................4-8

Configuring the V.54 Loopback Test State ...............................................................4-8

Configuring the V.54 Loopback Timer ......................................................................4-9

Loopback Test Modes ............................................................................................4-10

Digital Loopback (DL) ......................................................................................4-11

Remote Digital Loopback (RL) .........................................................................4-11

Local Analog Loopback (AL) ............................................................................4-12

Pattern-2047 BERT Test ..................................................................................4-13

Telco-Activated Loopback ................................................................................4-13

Chapter 5 Configuring HSSI Services

Overview of HSSI Services ............................................................................................5-1

Customizing HSSI Services Using the BCC or Site Manager ........................................5-2

Using the BCC .........................................................................................................5-2

Using Site Manager ..................................................................................................5-2

Enabling or Disabling HSSI Lines ............................................................................5-3

Using the BCC ...................................................................................................5-3

Using Site Manager ...........................................................................................5-3

Enabling or Disabling BofL .......................................................................................5-3

Using the BCC ...................................................................................................5-4

Using Site Manager ...........................................................................................5-4

Setting the BofL Interval ...........................................................................................5-4

Using the BCC ...................................................................................................5-4

Using Site Manager ...........................................................................................5-5

Setting the MTU .......................................................................................................5-5

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Using the BCC ...................................................................................................5-5

Using Site Manager ...........................................................................................5-5

Viewing the Configured WAN Protocol ........................................ ....... ...... ....... ...... ...5-5

Using Site Manager ...........................................................................................5-5

Setting the Transmission Interface ...........................................................................5-6

Using the BCC ...................................................................................................5-6

Using Site Manager ...........................................................................................5-6

Setting the External Clock Speed ............................................................................5-6

Using the BCC ...................................................................................................5-7

Using Site Manager ...........................................................................................5-7

Setting the CRC Size ...............................................................................................5-7

Using the BCC ...................................................................................................5-7

Using Site Manager ...........................................................................................5-7

Setting the Carrier Loss Debounce Timeout ............................................................5-8

Using the BCC ...................................................................................................5-8

Using Site Manager ...........................................................................................5-8

Setting Up DTE Loopback Testing ...........................................................................5-8

Using Site Manager .........................................................................................5-10

Sending Traffic Across a HSSI Interface ................................................................5-10

Chapter 6 Configuring E1 and T1 Services

Overview of E1 and T1 Services ....................................................................................6-1

Editing T1 Service s ........................ ...... ....... ...... ....... ............................................. ...... ...6-2

Enabling or Disabling T1 Services ...........................................................................6-4

Setting the T1 Frame Type .......................................................................................6-4

D4 Format ..........................................................................................................6-4

ESF Format .......................................................................................................6-4

Enabling or Disabling Bipolar with 8 Zero Substitution (B8ZS) ................................6-5

Specifying Line Buildout ...........................................................................................6-6

Setting the Internal Clock Mode ...............................................................................6-7

Assigning Channel Functions ...................................................................................6-7

Circuit Assignment .............................................................................................6-8

Data and Vo ice Pass-Through ...........................................................................6-8

Editing E1 Serv ices ................. ....... ............................................. ...... ....... ......................6-8

Enabling or Disabling E1 Services .........................................................................6-10

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Enabling or Disabling CRC ....................................................................................6-10

Enabling or Disabling High-Density Bipolar Coding (HDB3S) ................................6-10

Setting the Clock Source ........................................................................................6-10

Assigning Channel Functions .................................................................................6-11

Circuit Assignment ...........................................................................................6-11

Data and Vo ice Pass-Through .........................................................................6-11

Chapter 7 Configuring MCE1 and MCT1 Services

Overview of MCE1 and MCT1 Services .........................................................................7-2

Configuring MCE1 and MCT1 Ports ...............................................................................7-3

Selecting the Port Application ..................................................................................7-3

Using the BCC ...................................................................................................7-3

Using Site Manager ...........................................................................................7-4

Setting the Clock Parameters ...................................................................................7-5

Using the BCC ...................................................................................................7-6

Using Site Manager ...........................................................................................7-6

Customizing MCE1 Port Parameters .............................. ....... .........................................7-7

Enabling or Disabling the MCE1 Port .......................................................................7-8

Using the BCC ...................................................................................................7-8

Using Site Manager ...........................................................................................7-8

Setting the MCE1 Line Type .....................................................................................7-9

Using the BCC ...................................................................................................7-9

Using Site Manager ...........................................................................................7-9

Setting the MCE1 Line Coding .................................................................................7-9

Using the BCC .................................................................................................7-10

Using Site Manager .........................................................................................7-10

Setting the MCE1 Alarm Threshold Time ..............................................................7-10

Using the BCC .................................................................................................7-10

Using Site Manager .........................................................................................7-11

Setting the Alarm Threshold Clear Time ................................................................7-11

Using the BCC .................................................................................................7-11

Using Site Manager .........................................................................................7-11

Enabling or Disabling the International Bit .............................................................7-11

Using the BCC .................................................................................................7-11

Using Site Manager .........................................................................................7-11

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Setting the Loop Clock ...........................................................................................7-12

Using the BCC .................................................................................................7-12

Setting the External Clock ......................................................................................7-12

Using the BCC .................................................................................................7-12

Setting the Line Impedance (MCE1 Net Modules Only) ........................................7-13

Using the BCC .................................................................................................7-13

Using Site Manager .........................................................................................7-13

Setting the FDL Loop Interframe Fill ......................................................................7-13

Using the BCC .................................................................................................7-13

Setting Buffer Credits for MCE1 .............................................................................7-14

Setting the Transmit Buffer Use Credits for MCE1 ...........................................7-15

Setting the Receive Buffer Use Credits for MCE1 ...........................................7-15

Customizing MCT1 Port Parameters ............................................................................7-16

Enabling or Disabling the MCT1 Port .....................................................................7-17

Using the BCC .................................................................................................7-17

Using Site Manager .........................................................................................7-17

Setting the MCT1 Line Type ...................................................................................7-18

Using the BCC .................................................................................................7-18

Using Site Manager .........................................................................................7-18

Setting the MCT1 Line Coding ...............................................................................7-19

Setting the Signal Level ..........................................................................................7-20

Setting the Alarm Threshold Time .........................................................................7-21

Using the BCC .................................................................................................7-21

Using Site Manager .........................................................................................7-21

Setting the Alarm Threshold Clear Time ................................................................7-21

Using the BCC .................................................................................................7-21

Using Site Manager .........................................................................................7-21

Setting the FDL Mode for ESF Line Types .............................................................7-22

Using the BCC .................................................................................................7-22

Using Site Manager .........................................................................................7-22

Setting the Remote FDL HDLC Address Mode ......................................................7-23

Using the BCC .................................................................................................7-23

Using Site Manager .........................................................................................7-23

Accepting or Rejecting Port Loopback Requests ...................................................7-23

Using the BCC .................................................................................................7-23

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Using Site Manager .........................................................................................7-24

Setting a Loopback Configuration ..........................................................................7-24

Using the BCC .................................................................................................7-24

Using Site Manager .........................................................................................7-24

Setting Relay Control .............................................................................................7-25

Using the BCC .................................................................................................7-25

Setting the Source of Send Performance Messages .............................................7-25

Using the BCC .................................................................................................7-26

Using Site Manager .........................................................................................7-26

Setting the Source of Accept Performance Messages ...........................................7-26

Using the BCC .................................................................................................7-26

Using Site Manager .........................................................................................7-27

Setting the Primary Clock Source ..........................................................................7-27

Using the BCC .................................................................................................7-28

Using Site Manager .........................................................................................7-28

Setting the Secondary Clock Source .....................................................................7-28

Using the BCC .................................................................................................7-28

Using Site Manager .........................................................................................7-29

Setting the Loop Clock ...........................................................................................7-29

Using the BCC .................................................................................................7-29

Setting the External Clock ......................................................................................7-29

Using the BCC .................................................................................................7-29

Setting Buffer Credits for MCT1 .............................................................................7-29

Configuring a DS0A Connection ...................................................................................7-30

Gathering Required Information .............................................................................7-30

Setting Parameters .................................................................................................7-31

Using the BCC .................................................................................................7-31

Using Site Manager .........................................................................................7-33

Configuring Non-PRI Logical Lines ..............................................................................7-34

Defining Logical Lines ............................................................................................7-35

Using the BCC .................................................................................................7-35

Using Site Manager .........................................................................................7-36

Customizing Logical Line Parameters ....................................................................7-38

Using the BCC .................................................................................................7-38

Using Site Manager .........................................................................................7-39

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Enabling or Disabling the Logical Line ............................................................7-39

Enabling or Disabling BofL Messages .............................................................7-40

Setting the BofL Timeout .................................................................................7-40

Enabling or Disabling Logical Line Loopback ..................................................7-41

Viewing the Configured WAN Protocol ................................. ....... ...... ....... ...... .7-41

Setting the HDLC Service Type .......................................................................7-42

Setting the Local HDLC Address .....................................................................7-42

Setting the Remote HDLC Address .................................................................7-43

Setting Rate Adaption ......................................................................................7-44

Setting the Interframe Time Fill Pattern ...........................................................7-45

Setting the CRC Size .......................................................................................7-46

Setting the MTU Size .......................................................................................7-46

Enabling or Disabling Remote Loopback Detection .........................................7-47

Configuring BERT Diagnostic Pattern Tests ...... ....... ...... ...... ....... ...... ....... .......7 -4 7

Enabling or Disabling Fractional T1 Loopback Detection ................................7-48

Configuring NRZI Line Encoding .....................................................................7-49

Setting the Transmit Queue Length .................................................................7-50

Setting the Receive Queue Length ..................................................................7-51

Assigning Timeslots ...............................................................................................7-52

Using the BCC .................................................................................................7-52

Using Site Manager .........................................................................................7-53

Configuring ISDN PRI B Channels ...............................................................................7-54

Using the BCC .......................................................................................................7-54

Using Site Manager ................................................................................................7-55

Testing MCE1 and MCT1 Lines ....................................................................................7-56

About the Tests ..................................... ...... ............................................. ....... ...... .7-5 6

Setting Port Test Parameters .................................................................................7-57

Enabling or Disabling BERT Mode ..................................................................7-58

Setting the BERT Alarm Type ..........................................................................7-58

Setting the BERT Test Pattern .........................................................................7-59

Setting the Line-Coding Method ......................................................................7-59

Setting the Line Type .......................................................................................7-59

Setting FDL Options (MCT1 Only) ...................................................................7-60

Setting the Signal Level (MCT1 Only) .............................................................7-60

Enabling or Disabling the International Bit (MCE1 Only) .................................7-61

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Running Port Tests .................................................................................................7-61

Setting Logical Line Test Parameters .....................................................................7-63

Configuring BERT Patterns .............................................................................7-64

Configuring Fractional Loopback Requests .....................................................7-65

Running Logical Line Tests ....................................................................................7-66

Chapter 8 Configuring FT1 Services

Overview of FT1 Services ..............................................................................................8-1

FT1/T1 and ISDN Phone Line Configuration ...........................................................8-2

Configuring FT1 Services ...............................................................................................8-2

Configuring an FT1 Port Using the BCC ..................................................................8-2

Setting the External Clock State ........................................................................8-2

Configuring FT1 Services Using Site Manager ........................................................8-3

Setting the Clock Parameters ...................................................................................8-3

Using the BCC ...................................................................................................8-4

Using Site Manager ...........................................................................................8-4

Customizing FT1 Services Using the BCC or Site Manager ..........................................8-5

Enabling or Disabling the FT1 Port ..........................................................................8-6

Using the BCC ...................................................................................................8-6

Using Site Manager ...........................................................................................8-6

Setting the FT1 Line Type ........................................................................................8-7

Using the BCC ...................................................................................................8-7

Using Site Manager ...........................................................................................8-7

Setting the FT1 Line Coding ....................................................................................8-8

Using the BCC ...................................................................................................8-8

Using Site Manager ...........................................................................................8-9

Setting the Signal Level ............................................................................................8-9

Using the BCC ...................................................................................................8-9

Using Site Manager .........................................................................................8-10

Setting the Alarm Threshold Time .........................................................................8-10

Using the BCC .................................................................................................8-10

Using Site Manager .........................................................................................8-10

Setting the Alarm Threshold Clear Time ................................................................8-10

Using the BCC .................................................................................................8-10

Using Site Manager .........................................................................................8-11

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Setting the FDL Mode for ESF Line Types .............................................................8-11

Using the BCC .................................................................................................8-11

Using Site Manager .........................................................................................8-11

Setting the Remote FDL HDLC Address Mode ......................................................8-12

Using the BCC .................................................................................................8-12

Using Site Manager .........................................................................................8-12

Accepting or Rejecting Port Loopback Requests ...................................................8-12

Using the BCC .................................................................................................8-12

Using Site Manager .........................................................................................8-13

Setting the Loop Retention Interframe Time Fill .....................................................8-13

Using the BCC .................................................................................................8-13

Setting a Loopback Configuration ..........................................................................8-14

Using the BCC .................................................................................................8-14

Using Site Manager .........................................................................................8-14

Setting the Source of Send Performance Messages .............................................8-15

Using the BCC .................................................................................................8-15

Using Site Manager .........................................................................................8-15

Setting the Source of Accept Performance Messages ...........................................8-15

Using the BCC .................................................................................................8-16

Using Site Manager .........................................................................................8-16

Setting the MTU .....................................................................................................8-16

Using the BCC .................................................................................................8-16

Setting the Primary Clock Source ..........................................................................8-17

Using the BCC .................................................................................................8-17

Using Site Manager .........................................................................................8-17

Setting the Secondary Clock Source .....................................................................8-18

Using the BCC .................................................................................................8-18

Using Site Manager .........................................................................................8-18

Setting the External Clock State ............................................................................8-19

Using the BCC .................................................................................................8-19

Setting the Loop Clock ...........................................................................................8-19

Using the BCC .................................................................................................8-19

Setting Relay Control .............................................................................................8-20

Configuring a Non-PRI Logical Line .............................................................................8-20

Defining Logical Lines Using the BCC ...................................................................8-20

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Adding a Logical Line to an FT1 Port ..............................................................8-20

Specifying a Circuit Name ...............................................................................8-21

Selecting a WAN Protocol ........................... ...... ....... ...... ...... ...........................8-21

Setting the WAN Interface Type .......................................................................8-21

Defining Logical Lines Using Site Manager ...........................................................8-22

Customizing Logical Line Parameters ....................................................................8-23

Enabling or Disabling the Logical Line ............................................................8-24

Setting the Clock Source .................................................................................8-25

Enabling or Disabling BofL Messages .............................................................8-25

Setting the BofL Timeout .................................................................................8-26

Enabling or Disabling Logical Line Loopback ..................................................8-26

Viewing the Configured WAN Protocol ................................. ....... ...... ....... ...... .8-27

Setting the HDLC Service Type .......................................................................8-27

Setting the Local HDLC Address .....................................................................8-28

Setting the Remote HDLC Address .................................................................8-28

Setting the CRC Size .......................................................................................8-29

Setting the MTU Size .......................................................................................8-30

Enabling or Disabling Remote Loopback Detection .........................................8-30

Configuring BERT Diagnostic Pattern Tests ...... ....... ...... ...... ....... ...... ....... .......8 -3 1

Configuring NRZI Line Encoding ...........................................................................8-32

Using the BCC .................................................................................................8-32

Using Site Manager .........................................................................................8-32

Assigning Timeslots ...............................................................................................8-33

Allocating DS0s ...............................................................................................8-33

Selecting 56K Rate Adaption on FT1/T1 DSU/CSU Lines ..............................8-33

Using the BCC .................................................................................................8-34

Using Site Manager .........................................................................................8-34

Editing Line Resources ................................ ...... ....... ...... ...... ....... ....................8-35

Testing FT1 Lines .........................................................................................................8-35

About the Tests ..................................... ...... ............................................. ....... ...... .8-3 5

Setting Port Test Parameters .................................................................................8-36

Using Site Manager .........................................................................................8-36

Enabling or Disabling BERT Mode ..................................................................8-37

Setting the BERT Alarm Type ..........................................................................8-37

Setting the BERT Test Pattern .........................................................................8-37

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Setting the Line-Coding Method ......................................................................8-38

Setting the Line Type .......................................................................................8-39

Setting FDL Options ........................................................................................8-39

Setting the Signal Level ..................................................................................8-40

Using Site Manager .........................................................................................8-40

Running Port Tests .................................................................................................8-41

Using Site Manager .........................................................................................8-41

Entering BERT Test Commands ......................................................................8-41

Entering FT1 Port Loopback Commands ........................................................8-42

Chapter 9 Configuring FE1 Services

Overview of FE1 Services ..............................................................................................9-1

Configuring FE1 Services ...............................................................................................9-2

Configuring an FE1 Port Using the BCC ..................................................................9-2

Setting the External Clock State ........................................................................9-2

Configuring FE1 Services Using Site Manager ........................................................9-3

Setting the Clock Parameters ...................................................................................9-3

Using the BCC ...................................................................................................9-4

Using Site Manager ...........................................................................................9-4

Customizing FE1 Services Using the BCC or Site Manager ..........................................9-5

Disabling and Reenabling the FE1 Port ...................................................................9-5

Using the BCC ...................................................................................................9-6

Using Site Manager ...........................................................................................9-6

Setting the FE1 Line Type ........................................................................................9-6

Using the BCC ...................................................................................................9-6

Using Site Manager ...........................................................................................9-6

Setting the FE1 Line Coding ....................................................................................9-7

Using the BCC ...................................................................................................9-8

Using Site Manager ...........................................................................................9-8

Setting the Alarm Threshold Time ...........................................................................9-8

Using the BCC ...................................................................................................9-8

Using Site Manager ...........................................................................................9-8

Setting the Alarm Threshold Clear Time ..................................................................9-8

Using the BCC ...................................................................................................9-9

Using Site Manager ...........................................................................................9-9

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Accepting or Rejecting Loopback Requests ............................................................9-9

Setting a Loopback Configuration ............................................................................9-9

Using the BCC .................................................................................................9-10

Using Site Manager .........................................................................................9-10

Enabling or Disabling the International Bit .............................................................9-10

Using the BCC .................................................................................................9-10

Using Site Manager .........................................................................................9-10

Setting the Primary Clock Source ..........................................................................9-11

Using the BCC .................................................................................................9-11

Using Site Manager .........................................................................................9-11

Setting the Secondary Clock Source .....................................................................9-11

Using the BCC .................................................................................................9-12

Using Site Manager .........................................................................................9-12

Configuring a Non-PRI Logical Line .............................................................................9-12

Defining the Logical Line Using the BCC ...............................................................9-13

Adding a Logical Line to an FE1 Port ..............................................................9-13

Defining the Logical Line Using Site Manager .......................................................9-13

Customizing Logical Line Parameters ....................................................................9-14

Disabling and Reenabling the Logical Line .....................................................9-16

Disabling and Reenabling BofL Messages .................................. ...... .............. 9 -1 6

Setting the BofL Timeout .................................................................................9-17

Setting the MTU Size .......................................................................................9-17

Enabling or Disabling Interface Filtering ..........................................................9-18

Setting the Service Type ..................................................................................9-18

Setting Minimum Frame Spacing .....................................................................9-19

Setting the Local HDLC Address .....................................................................9-19

Setting the Remote HDLC Address .................................................................9-20

Viewing the Configured WAN Protocol ................................. ....... ...... ....... ...... .9-21

Setting the CRC Size .......................................................................................9-21

Setting Synchronous Line Coding ...................................................................9-21

Enabling or Disabling Extended Addressing ....................................................9-22

Enabling or Disabling Remote Loopback Detection .........................................9-23

Editing Line Resources ................................ ...... ....... ...... ...... ....... ....................9-23

Assigning Timeslots .........................................................................................9-23

Setting FE1 Line Priority ..................................................................................9-24

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Setting the Hold-Down Interval ........................................................................9-25

Viewing the External Clock Speed ..................... ....... ...... ...... ...........................9-25

Testing FE1 Lines .........................................................................................................9-25

About the Tests ..................................... ...... ............................................. ....... ...... .9-2 6

Setting Port Test Parameters .................................................................................9-27

Enabling or Disabling BERT Mode ..................................................................9-28

Setting the BERT Alarm Type ..........................................................................9-28

Setting the BERT Test Pattern .........................................................................9-28

Setting the Line-Coding Method ......................................................................9-28

Setting the Line Type .......................................................................................9-28

Running Port Tests .................................................................................................9-29

Defining FE1 Port-Line Testing Using the BCC ......................................................9-30

Setting the Error Insert Value ..........................................................................9-30

Enabling Bert Mode .........................................................................................9-30

Resetting BERT Testing ...................................................................................9-30

Setting the BERT Alarm Type ..........................................................................9-30

Setting the BERT Test Pattern .........................................................................9-31

Setting the Framing Method ............................................................................9-31

Enabling the International Bit ...........................................................................9-31

Setting the Line Coding Method ......................................................................9-31

Chapter 10 Configuring Multiline Services

Overview of Multiline Configurations ............................................................................10-1

Types of Multiline Circuits .......................................................................................10-2

Physical and Logical Circuits ...........................................................................10-2

Benefits of a Multiline Configuration .......................................................................10-3

Multiline Example ...................................................................................................10-3

Software Considerations ........................................................................................10-4

Frame Relay ....................................................................................................10-4

Multilink PPP ...................................................................................................10-5

Bandwidth-on-Demand (BOD) .........................................................................10-5

Configuring Multiline Services ......................................................................................10-5

Grouping Physical Lines into a Multiline Circuit .....................................................10-6

Adding Physical Lines to a Circuit ..........................................................................10-7

Changing the Traffic Distribution Method .........................................................10-9

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Address-Based Selection ..............................................................................10-10

Random Selection .........................................................................................10-11

Grouping Logical Lines into a Multiline Circuit ............................ ....... ...... ....... .....10 -11

Appendix A Site Manager Parameters

Asynchronous Line Parameters ..................................................................................... A-2

DSU/CSU Parameters ................................................................................................... A-8

E1 Line Parameters ..................................................................................................... A-10

HSSI Line Parameters ................................................................................................. A-13

LAPB Parameters ........................................................................................................ A-18

MCE1 Port Application and Clock Par a meters ............................................................ A-24

MCE1 Port Parameters ................................................................................................ A-25

MCT1 Port Application and Clock Parameters ......... ...... ....... ...... ...... ....... ...... ....... ...... A-28

MCT1 Port Parameters ............ ....... ............................................. ...... ....... ................... A-29

QMCT1 and DMCT1 Port Parameters .. ....... ...... ....... ...... ....... ...... ...... ....... ...... ............. A-34

MCE1 and MCT1 Logical Line Parameters ................................................................. A-36

FT1 Port Application and Clock Parameters ................................................................ A-43

FT1 Port Parameters ................................................................................................... A-44

FT1 Logical Line Parameters ....................................................................................... A-50

FE1 Line Parameters ................................................................................................... A-56

FE1 Clock Parameters ................................................................................................. A-57

FE1 Port Parameters ................................................................................................... A-58

FE1 Logical Line Parameters ...................................................................................... A-63

Synchronous Line Parameters .................................................................................... A-69

T1 Line Parameters ..................................................................................................... A-88

Multiline Configuration Parameter ............................................................................... A-91

Appendix B BCC show Commands

Online Help ..................................................................... ....... ...... ..................................B-1

Commands for DSU/CSU Services ............................................................................... B-1

show dsucsu alerts ................................................................................................. B-2

show dsucsu detail .................................................................................................. B-3

Receive Errors .................................................................................................. B-5

Transmit Errors ................................................................................................. B-5

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System Errors .................... ...... ....... ...... ....... ...... ............................................. .. B-6

show dsucsu errors ................................................................................................. B-6

Receive Errors .................................................................................................. B-6

Transmit Errors ................................................................................................. B-7

System Errors .................... ...... ....... ...... ....... ...... ............................................. .. B-7

show dsucsu sample ............................................................................................... B-8

show dsucsu stats ................................................................................................... B-9

show dsucsu summary ......................................................................................... B-10

Commands for FT1 and FE1 Services ........................................................................ B-11

show ft1e1 alerts ................................................................................................... B-12

show ft1e1 bert-stats ............................................................................................. B-12

show ft1e1 detail ................................................................................................... B-13

Receive Errors ................................................................................................ B-15

Transmit Errors ............................................................................................... B-15

System Errors .................... ...... ....... ...... ....... ...... ............................................. B-16

show ft1e1 errors .................................................................................................. B-16

Receive Errors ................................................................................................ B-17

Transmit Errors ............................................................................................... B-17

System Errors .................... ...... ....... ...... ....... ...... ............................................. B-17

show ft1e1 fdl-ansi ................................................................................................ B-18

show ft1e1 fdl-att ................................................................................................... B-19

show ft1e1 framer ................................................................................................. B-20

show ft1e1 port ..................................................................................................... B-20

show ft1e1 sample ................................................................................................ B-21

show ft1e1 stats .................................................................................................... B-22

show ft1e1 summary ............................................................................................. B-23

show ft1e1 timeslot ............................................................................................... B-24

Commands for HSSI Services ..................................................................................... B-25

show hssi alerts .................................................................................................... B-26

show hssi detail ..................................................................................................... B-27

Receive Errors ................................................................................................ B-29

Transmit Errors ............................................................................................... B-30

System Errors .................... ...... ....... ...... ....... ...... ............................................. B-30

show hssi errors .................................................................................................... B-31

Receive Errors ................................................................................................ B-31

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Transmit Errors ............................................................................................... B-31

System Errors .................... ...... ....... ...... ....... ...... ............................................. B-32

show hssi sample .................................................................................................. B-32

show hssi stats ...................................................................................................... B-33

show hssi summary .............................................................................................. B-35

Commands for MCT1/MCE1 Services ........................................................................ B-37

show mct1e1 alerts ............................................................................................... B-38

show mct1e1 bert-stats-ll ...................................................................................... B-39

show mct1e1 bert-stats-port ................................................................................. B-40

show mct1e1 clock-state ....................................................................................... B-41

show mct1e1 clock-summary ................................................................................ B-41

show mct1e1 e1port .............................................................................................. B-42

show mct1e1 fdl-ansi ............................................................................................ B-43

show mct1e1 fdl-att ............................................................................................... B-44

show mct1e1 framer .............................................................................................. B-45

show mct1e1 rx-errors .......................................................................................... B-46

show mct1e1 stats ................................................................................................ B-47

show mct1e1 summary ......................................................................................... B-48

show mct1e1 system-errors .................................................................................. B-50

show mct1e1 t1port ............................................................................................... B-51

show mct1e1 timeslot ............................................................................................ B-52

show mct1e1 tx-errors ........................................................................................... B-52

Commands for Serial Services .................................................................................... B-53

show serial alerts .................................................................................................. B-54

show serial detail ................................................................................................... B-55

Receive Errors ................................................................................................ B-57

Transmit Errors ............................................................................................... B-57

System Errors .................... ...... ....... ...... ....... ...... ............................................. B-57

show serial eia-status ............................................................................................ B-58

show serial errors .................................................................................................. B-59

Receive Errors ................................................................................................ B-59

Transmit Errors ............................................................................................... B-59

System Errors .................... ...... ....... ...... ....... ...... ............................................. B-60

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show serial sample ................................................................................................ B-60

show serial stats .................................................................................................... B-61

show serial summary ............................................................................................ B-63

Appendix C Troubleshooting an MCT1 Connection

Glossary Index

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Figures

Figure 2-1. Satellite Broadcast (Sample Topology) ..................................................2-15

Figure 2-2. KG84A Network Configuration ...............................................................2-22

Figure 2-3. Edit LAPB Parameters Window .............................................................2-36

Figure 3-1. Edit ASYNC Parameters Window ............................................................3-2

Figure 4-1. Digital Loopback ....................................................................................4-11

Figure 4-2. Remote Digital Loopback (CCITT V.54 Loopback) ................................4-12

Figure 4-3. Local Analog Loopback ..........................................................................4-12

Figure 4-4. Pattern-2047 BERT Test ........................................................................4-13

Figure 5-1. DTE-to-DCE Loopback Testing ................................................................5-9

Figure 6-1. T1 Line Entry Window ..............................................................................6-3

Figure 6-2. Bipolar Format .........................................................................................6-5

Figure 6-3. Bipolar with 8 Zero Substitution (B8ZS) ...................................................6-6

Figure 6-4. E1 Line Entry Window .............................................................................6-9

Figure 7-1. SDLC Connection Using Fr ame Relay over T1 Lines ............................7-31

Figure 7-2. Default Circuit Name for Link Modules ...................................................7-37

Figure 7-3. Default Circuit Name for ASN Net Modules ...........................................7-37

Figure 8-1. Default Circuit Name for ARN Link Modules ..........................................8-23

Figure 9-1. Default Circuit Name for ARN Link Modules ..........................................9-13

Figure 10-1. Multiline Circuit Types ............................................................................10-3

Figure 10-2. Multiline Circuit Consisting of Three Synchronous Lines .......................10-4

Figure 10-3. Add Circuit Window ................................................................................10-7

Figure 10-4. Circuit Definition Window .......................................................................10-8

Figure 10-5. Change Lines Menu Option ...................................................................10-9

Figure 10-6. Edit Multiline Options Window .............................................................10-10

Figure 10-7. Logical Lines Window Showing Unused Logical Lines

(MCE1 E xa mple) ...... ...... ....... ...... ....... ...... ....... ...... ...... ....... ...... ....... .....10 -13

Figure 10-8. Logical Lines Window Showing the Circuit and

Unused Logical Lines (MCE1 Example) ..............................................10-15

Figure 10-9. Circuit Definition Window .....................................................................10-16

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Figure 10-10. Select Logical Line Window .................................................................10-16

Figure 10-11. Selecting an Unused Logical Line ........................................................10-17

Figure 10-12. Two Logical Lines in a Multiline Circuit ................................................10-17

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Tables

Table 1-1. Site Manager Abbreviations for Circuit Types .........................................1-5

Table 1-2. WAN Line Types ......................................................................................1-6

Table 2-1. Synchronous Line Configuration Tasks ...................................................2-2

Table 2-2. Line Coding Options ..............................................................................2-21

Table 4-1. DSU/CSU Configuration Tasks ...............................................................4-3

Table 4-2. Telco Service Options ..............................................................................4-4

Table 4-3. Loopback Test State Options ...................................................................4-8

Table 5-1. HSSI Line Configuration Tasks ................................................................5-2

Table 7-1. MCE1 and MCT1 Clock Source Options .................................................7-5

Table 7-2. MCE1 Port Configuration Tasks ..............................................................7-7

Table 7-3. MCE1 Line Type Options .........................................................................7-9

Table 7-4. MCE1 Port Configuration Tasks ............................................................7-16

Table 7-5. MCT1 Line Type Options .......................................................................7-18

Table 7-6. Signal Level Options ..............................................................................7-20

Table 7-7. ESF Line Types ......................................................................................7-22

Table 7-8. Loopback Configuration Options ............................................................7-24

Table 7-9. Send Performance Messages Options ..................................................7-25

Table 7-10. Accept Performance Messages Options ................................................7-26

Table 7-11. Primary Clock Source Options .... ....... ...... ............................................. .7-27

Table 7-12. Line Encoding for SDLC Connections ...................................................7-32

Table 7-13. MCE1 and MCT1 Logical Line Configuration Tasks ..............................7-38

Table 7-14. Local HDLC Address Options ................................................................7-42

Table 7-15. Remote HDLC Address Options ............................................................7-43

Table 7-16. Rate Adaption Options ...........................................................................7-44

Table 7-17. MCE1 and MCT1 Line Tests ..................................................................7-56

Table 7-18. MCE1 and MCT1 Port Test Configuration Tasks ....................................7-57

Table 7-19. ESF Line Types ......................................................................................7-60

Table 7-20. Signal Level Options ..............................................................................7-60

Table 7-21. Send Commands for MCE1 and MCT1 Port Tests ................................7-61

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Table 7-22. Send Commands for MCT1 Port Loopback ..........................................7-62

Table 7-23. Fractional Loopback Options .................................................................7-65

Table 7-24. Send Commands for Logical Line BERT Tests .....................................7-67

Table 7-25. Send Commands for Logical Line Fractional Loopback Tests ...............7-67

Table 8-1. Clock Parameter Options .........................................................................8-4

Table 8-2. FT1 Configuration Tasks .........................................................................8-5

Table 8-3. FT1 Line Type Options .............................................................................8-7

Table 8-4. FT1 Line Coding Options ...... ...... ....... ...... ....... .........................................8-8

Table 8-5. Signal Level Options ................................................................................8-9

Table 8-6. ESF Line Types ......................................................................................8-11

Table 8-7. Loopback Configuration Options ............................................................8-14

Table 8-8. Send Performance Messages Options ..................................................8-15

Table 8-9. Accept Performance Messages Options ................................................8-15

Table 8-10. Primary Clock Options ...........................................................................8-17

Table 8-11. Secondary Clock Options ......................................................................8-18

Table 8-12. Logical Line Configuration Tasks ..........................................................8-23

Table 8-13. Port Test Configuration Tasks ...............................................................8-36

Table 8-14. BERT Alarm Type Options .....................................................................8-37

Table 8-15. FT1 Line Coding Options ................................ .......................................8-38

Table 8-16. FT1 Line Type Options ...........................................................................8-39

Table 8-17. ESF Line Types ......................................................................................8-39

Table 8-18. Signal Level Options ..............................................................................8-40

Table 8-19. Send Commands for FT1 Port Tests ......................................................8-41

Table 8-20. Send Commands for FT1 Port Loopback ..............................................8-42

Table 9-1. Clock Parameter Options .........................................................................9-3

Table 9-2. FE1 Configuration Tasks .........................................................................9-5

Table 9-3. FE1 Line Type Options .............................................................................9-6

Table 9-4. FE1 Line Coding Options .........................................................................9-7

Table 9-5. Loopback Configuration Options ..............................................................9-9

Table 9-6. Primary Clock Option .............................................................................9-11

Table 9-7. Secondary Clock Options ......................................................................9-12

Table 9-8. Logical Line Configuration Tasks ..........................................................9-14

Table 9-9. Send Commands for FE1 Port Tests ......................................................9-29

Table B-1. DSU/CSU show Commands .................................................................. B-2

Table B-2. show ft1e1 Commands ......................................................................... B-11

xxx

308648-14.00 Rev 00

Table B-3. HSSI show Commands ......................................................................... B-25

Table B-4. MCT1/MCE1 show Commands ............................................................ B-37

Table B-5. Serial show Commands ........................................................................ B-53

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xxxi

Preface

This guide describes WAN line services and what you do to start and customize WAN line services on a Nortel Networks router.

You can use the Bay Command Console (BCC WAN line services on a router. In this guide, you will find instructions for using both the BCC and Site Manager.

Before You Begin

Before using this guide, you must complete the following procedures. For a new router:

• Install the router (see the installation guide that came with your router).

• Connect the router to the network and create a pilot configuration file (see

Quick-Starti ng Router s , Conf igur ing BaySt ac k Remote Acc ess , or Connecting ASN Routers to a Network).

Make sure that you are runni ng the lates t versio n of Nortel Netw orks BayRS Site Manager software. For information about upgrading BayRS and Site Manager, see the upgrading guide for your version of BayRS.

™

) or Site Manager to configure

™

and

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xxxiii

Configuring WAN Line Services

Text Conventions

This guide uses the following text conventions:

angle brackets (< >) Indicate that you choose the text to enter based on the

description inside the brackets. Do not type the brackets when entering the command.

Example: If the command syntax is:

ping

ip_address

ping 192.32.10.12

>, you enter:

bold text

Indicates command names and options and text that you need to enter.

Example: Enter

show ip {alerts | routes

Example: Use the

dinfo

command.

braces ({}) Indicate required elements in syntax descriptions

where there is more than one option. You must choose only one of the options. Do not type the braces when entering the command.

Example: If the command syntax is:

show ip {alerts | routes show ip alerts or show ip routes

}

, you must enter either:

, but not both.

brackets ([ ]) Indicate optional elements in syntax descriptions. Do

not type the brackets when entering the command. Example: If the command syntax is:

show ip interfaces [-alerts show ip interfaces

]

, you can enter either:

show ip interfaces -alerts

ellipsis points (. . . ) Indicate that you repeat the last element of the

command as needed.

xxxiv

Example: If the command syntax is:

ethernet/2/1 ethernet/2/1

parameter> <value

and as many parameter-value pairs as

needed.

. . .

, you enter

308648-14.00 Rev 00

Preface

italic text Indicates file and directory names, new terms, book

titles, and variables in command syntax descriptions. Where a variable is two or mor e words, the words are connected by an underscore.

Example: If the command syntax is:

show at

valid_route

is one variable and you substitute one value

for it.

screen text Indicates system output, for example, prompts and

system messages.

Acronyms

Example:

Set Trap Monitor Filters

separator ( > ) Shows menu paths.

Example: Protocols > I P ide nti fies the IP option on the Protocols menu.

vertical line (

) Separates choices for command keywords and

arguments. Enter only one of the choices. Do not type the vertical line when enteri ng the command.

Example: If the command syntax is:

show ip {alerts | routes show ip alerts

This guide uses the following acronyms:

AMI ANSI ATM

alternate mark inversion American N ational Standards Inst itute asynchronous transfer mode

}

, you enter either:

show ip routes

, but not both.

AUI attachmen t unit interface B8ZS bipolar with 8 zero substitution

BCC BERT

308648-14.00 Rev 00

Bay Command Console bit error rate test

xxxv

Configuring WAN Line Services

BofL BRI CC CCITT

CPE CRC CSMA/CD CTS DCE DDS DLSw DMCT1

DS0 DS0A DS01

Breath of Life (message) Basic Rate Interface clear channel International Telegraph and Telephone Consultative

Committee (now ITU-T) customer premise equipment cyclic redundancy check carrier sense multiple access/collision detection clear to send data communications equipment digital data system data link switching Nortel Networks Dual-Por t Multic hannel T1 link or net

module digital signal, level zero (0) digital signal, level zero, subrate A digital signal, level one

xxxvi

DSR DSU/CSU DSX-1 DTE ESF FCS FDDI FDL FT1 GOSIP

data set ready data service unit/channel service unit digital system cross-connect, level 1 data termin al equipment extended supe rframe format frame check sequence Fiber Distributed Data Interface facility data link fractional T1 Government O pen System s Interconnection Protocol

HDB3 high-density bipolar coding

HDLC HSSI

high-level data li nk control high-speed serial interface

308648-14.00 Rev 00

Preface

IP ISDN ISO ITU-T

LAPB LAN MAC MAU MCE1 MCT1 MTU NBMA NCP NLPID NRZ NRZI

Internet P rotocol Integrated S ervices Digital Network International Organization for Standardization International Telecommunications

Union–Telecommunications (formerly CCITT) Link Access Procedure Balanced local area network media access control media access unit Multichannel E1 Multichannel T1 maximum transmission unit nonbroadcast multi-access Network Control Protocol network layer protocol identifier nonreturn to zero nonreturn to zero inverted

NSAP OSI OSPF PCM PDU PHY PMD PPP PTT QMCT1

RMT RR

308648-14.00 Rev 00

network service access point Open Systems Interconnection Open Shortest Path First (protocol) Physical Connection Management (FDDI) protocol data unit physical layer physical layer media dependent (FDDI) Point-to-Point Protocol Post Telephone and Telegraph Nortel Networks Quad-Port Multichannel T1 link

module Ring Management (FDDI) receiver ready

xxxvii

Configuring WAN Line Services

RTS SCC SDLC SF SMDS SMT SNMP STP TCP/IP

request to send serial communications controller synchronous data link control superframe format switched multimegabit data service Station Management (FDDI) Simple Network Management Protocol shielded tw isted pair Transmission Control Protocol/Internet Protocol

Telnet Telecommunication network

TFTP TPE UTP WAN

Trivial File Transfer Protocol twisted pa ir Ethernet unshielded twisted pair wide area network

Hard-Copy Technical Manuals

xxxviii

You can print selected technical manuals and release notes free, directly from the Internet. Go to support.baynetworks.com/library/tpubs/. Find the product for which you need documentation. Then locate the specific category and model or version for your hardw are or soft ware product . Usi ng Adobe Ac robat Re ader, you can open the manuals and releas e notes, search for the sections you ne ed, and print them on most standard printers. You can download Acrobat Reader free from the Adobe Systems Web site, www.adobe.com.

You can purchase selected documentation sets, CDs, and technical publications through the collateral catalog. The catalog is located on the World Wide Web at

support.baynetworks.com/catalog.html and is divided into sections arranged

alphabetically:

• The “CD ROMs” section lists available CDs.

• The “Guides/Books” section lists books on technical topics.

• The “Technical Manuals” section lists available printed documentation sets.

308648-14.00 Rev 00

How to Get Help

If you purchased a service contract for your Nortel Networks product from a distributor or authorized reseller, contact the technical support staff for that distributor or reseller for assistance.

If you purchased a Nort el Net wor ks s ervice pr ogram, c ontact one of the f ollowing Nortel Networks Technical Solutions Centers:

Technical Solutions Center Telephone Number

Billerica, MA 800-2LANWAN (800-252-6926) Santa Clara, CA 800-2LANWAN (800-252-6926) Valbonne, France 33-4-92-96-69-68 Sydney, Australia 61-2-9927-8800 Tokyo, Japan 81-3-5402-7041

Preface

308648-14.00 Rev 00

xxxix

Chapter 1

Getting Started

This chapter describes how to access the physical and data link layer (line) services for the configured WAN circuits on a Nortel Networks router.

Note:

In the OSI internetworking model, the physical layer manages the transmission of bits across the physical media (for example, cable or modem interface); a physical layer protocol defines the electrical and mechanical interface. The data link layer defines the procedures for transferring data accurately and reliably across the physical layer.

This chapter contains the following sections:

Section Page

What’s the Default Configuration? 1-2 Summary of WAN Line Configuration Services 1-2 Starting the Configuration Tools 1-3 Accessing Line Parameters 1-4

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1-1

Configuring WAN Line Services

What’s the Default Configuration?

With the exception of multichannel circuits (MCE1 and MCT1), router software automatically sets default values for line service parameters when you add a network circuit.

Line defaults are suitable for most networks; however, you can use the BCC or Site Manager to customize these sett i ngs bas ed on you r net work composition and requirements.

Summary of WAN Line Configuration Services

After completing a basic configuration, you can use this guide to customize line services, as defined in the following table. A check mark ( you can perform a task using the tool named at the top of the column.

WAN Line Services Configuration Tasks

Task BCC Site Manager

✓) indicates whether

Configuring synchronous and LAPB services Configuring BayStack AN and ANH asynchronous

services Configuring BayStack DSU/CSU services Configuring HSSI services Configuring E1 and T1 services

Configuring MCE1 and MCT1 services Configuring FT1 services Configuring FE1 services Configuring multiline services

✓✓

✓

✓✓ ✓✓

✓ ✓✓ ✓✓

✓

1-2

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Startin g the Configuration Tools

Before configuring WAN line services, refer to the following user guides for instructions on how to start and use the Nortel Networks configuration tool of your choice.

Configuration Tool User Guide

Getting Started

Bay Command Console (BCC™)

Site Manager

NETarchitect

Using the Bay Command Console (AN/BN Routers)

Configuring and Managing Routers with Site Manager

Getting Started with Optivity Network Management System 8.0

Configuring and Maintaining Networks with the NETarchitect System

These guides also describe generically how to create or modify a device configuration.

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1-3

Configuring WAN Line Services

Accessing Line Parameters

You can use the BCC or Site Manager to access WAN line services.

Using the BCC

To access line parameters, complete the following tasks.

In confi gura ti on mode, navigate to t he top-leve l

box

stack

prompt and

type:

show config

box#

The console displays the current router configuration, including installed modules and protocols.

At the

box

stack

prompt, choose a slot n umber an d connector nu mber

from the configuration. For example, type:

serial slot 2 connector 1

box#

serial 2/1

box#

The prompt changes to

Refer to the appropriate chapter for instructions on customizing a line

serial/2/1#

service.

1-4

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Using Site Manager

Note:

This guide assumes that you are w orking with a route r conf iguration f ile that already contains the appropriate WAN circuits for the hardware configuration. See Configuring and Managing Routers with Site Manager for information about adding circuits to a configuration file.

To access line parameters, complete the following tasks.

You do this System responds

Getting Started

Site Manager Procedure

1. In the Site Manager main window, choose >

Tools

select the local or rem ote config uration fi le for the router.

2. Choose

Note:

Configuration Manager

Circuits

Edit Circuits

For many circuit types, you can simply click on the configured

; then,

. The Circuit List window op ens.

The Configuration Manager window opens.

connector in the Configuration Manager window, and then click on Edit Line in the window.

The Circuit List ide ntif ies all circuit s in the conf igurati on f ile usi ng an abbr e viated name and number. Table 1-1

lists the Configuration Manager abbreviation for

each circuit type.

Table 1-1. Site Manager Abbreviations for Circuit Types

Letter Designator Circuit Type

E1 E1 HHSSI MCE1 MCE1 MCT1 MCT1 S Synchronous T1 T1 E Ethernet

(continued)

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1-5

Configuring WAN Line Services

Table 1-1. Site Manager Abbreviations for Circuit Types

Letter Designator Circuit Type

F FDDI * O Token ring *

Configuring Ethernet, FDDI, and Token Ring Services.

See

To edit a circuit, complete the following tasks.

Site Manager Procedure

You do this System responds

1. In the Circuit List w indow, select the circuit

and click on

2. Choose

3. Select the line you want to edit and click

4. Edit the line parameters.

Lines > Edit Lines

Edit

. The Edit Lines window opens, listin g the

The Circuit Definition window opens.

selected circuit’s lines by slot number an d connector name.

The Configuration Manager displays the appropriate Edit Lines window for the circuit type. Only multichannel and multiline circuits have more than one line listed in the Edit Lines windo w.

(continued)

1-6

The circuit type determines how you edit line services. Table 1-2 go for information for each circuit type.

Table 1-2. WAN Line Types

Line Type Go To

Synchronous, LAPB Chapter 2 Asynchronous Chapter 3 DSU/CSU (BayStack routers only) Chapter 4 HSSI Chapter 5 E1, T1 Chapter 6 MCE1, MCT1 Chapter 7

308648-14.00 Rev 00

shows where to

(continued)

Getting Started

Table 1-2. WAN Line Types

Line Type Go To

FT1 Chapter 8 FE1 Chapter9 Multiline synchronous, HSSI, T1/E1, or MCT1/MCE1 Chapter 10 ATM DXI Chapter 2 (COM line) or

ATM FRE Ethernet, FDDI, Token Ring

-2, ATM ARE

(continued)

Chapter 5 (HSSI line)

Configuring ATM Services Configuring Ethernet, FDDI, and

Token Ring Services

308648-14.00 Rev 00

1-7

Chapter 2

Configuring Synchronous Services

You configure and customize line services for synchronous WAN circuits and the Link Access Procedure Balanced (LAPB) protocol by setting synchronous and LAPB parameters as described in the following sections:

Section Page

Overview of Synchronous Services 2-2 Customizing Synchronous Services Using the BCC or Site Manager 2-2 Editing LAPB Protocol Services 2-34 Displaying EIA Signals 2-42 Resetting EIA Signal Status 2-43

Note:

refer to an interface or service. However, in the BCC, we use serial exclusively.

308648-14.00 Rev 00

Throughout this chapt er , we use sync hr o nous an d seri al int erchan geably to

2-1

Configuring WAN Line Services

Overview of Synchronous Service s

Each synchronous interface:

• Connects a Nortel Networks router or switch to data communications equipment (DCE) devices, such as DSUs, CSUs, and modems.

• Supports a range of physical connections, including V.35, X.21, RS-232, and RS-449/422 balanced.

• Supports both leased and dial-up circuits. See Configuring Dial Services for information about configuring dial-up circuits.

• Supports many WAN software services, including PPP, X.25, frame relay, SMDS, HDLC encapsulation, and ATM DXI.

• Operates from 1200 b/s to a maximum of 2.048 Mb/s, full duplex.

You can configure synchronous interfaces to integrate IBM SDLC traffic in an internetwork. Traffic is integrated by connecting local or remote IBM equipment directly to the synchronous interface and configuring either DLSw for SDLC or Transparent Sync Pass-Thru features.

Customizing Synchronous Services Using the BCC or Site Manager

Table 2-1 lists the synchronous line configuration tasks described in this chapter

and indicates whether you can use the BCC or Site Manager to perform each task.

Table 2-1. Synchronous Line Configuration Tasks

Task BCC Site Manager Page

Enabling and Disabling Synchronous Services Enabling or Disabling BofL Messages Setting the BofL Timeout Setting the MTU Enabling or Disabling Remote Address Filtering Setting the Clock Source Setting the Internal Clock Speed

2-2

✓✓ ✓✓ ✓✓ ✓✓ ✓✓ ✓✓ ✓✓

308648-14.00 Rev 00

2-4 2-5 2-6 2-6 2-7 2-8 2-9

(continued)

Configuring Synchronous Services

Table 2-1. Synchronous Line Configuration Tasks

Task BCC Site Manager Page

Setting the External Clock Speed Setting the Signal Mode Enabling and Disabling RTS Signals Enabling and Disabling Burst Count Specifying the Link-Level Protocol Setting the Transmit Window Size Setting Minimum Frame Spacing Specifying Point-to-Point Addresses Viewing the Configured WAN Protocol Setting Pass-Thru Addresses Setting the CRC Size Setting the Signaling Method Enabling and Disabling DSR Polling Setting the Line Coding Configuring the KG84A Security Specifying the Network Link Level Setting the Retry Count Setting the Link Idle Timer Enabling and Disabling Extended Control Enabling and Disabling Receiver Ready Signals Setting the Cable Type Setting the Retry Timer Enabling and Disabling Extended Addressing Enabling and Disabling Remote Loopback Detection Setting a Priority Setting the Hold Down Time Setting the B Channel Override Setting the IFTF Pattern Setting the WAN Serial Interface Type

✓✓ ✓✓ ✓✓ ✓✓ ✓✓

✓✓ ✓✓ ✓✓ ✓✓ ✓✓ ✓✓

✓✓

✓✓ ✓✓ ✓✓ ✓✓

✓✓

(continued)

✓

✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓

✓

2-10 2-10 2-11 2-12 2-12 2-13 2-14 2-14 2-17 2-17 2-19 2-19 2-20 2-21 2-21 2-24 2-25 2-25 2-25 2-26 2-26 2-27 2-27 2-28 2-28 2-29 2-29 2-30 2-31

(continued)

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2-3

Configuring WAN Line Services

Table 2-1. Synchronous Line Configuration Tasks

Task BCC Site Manager Page

Setting the Asynchronous Baud Rate Setting the Pasync Parity Type Setting the Pasync Data Bits Setting the Pasync Stop Bits Setting the Pasync Baud Rate

Note:

Although there are several line parameters common to all synchronous (COM) ports, many parameters apply only to certain hardware modules or WAN protocols.

Enabling or Disabling Synchronous Services

The router enables synchronous line services when you add the circuit. You can disable and reenable the line without moving the cables.

Using the BCC

To enable or disable a serial line, navigate to the serial prompt (for example,

box; serial/2/1

) and type:

(continued)

✓ ✓ ✓ ✓ ✓

2-32 2-33 2-33 2-33 2-34

2-4

state

variable

For example:

serial/2/1/# serial/2/1/#

state enabled state disabled

Using Site Manager

See the Enable paramet er on page A-69 for information.

308648-14.00 Rev 00

Enabling or Disabling BofL Messages

The Breath of Life (BofL) parameter enables or disables the transmission of proprietary BofL messages over a point-to-point connection between the local router and a remote peer. The exchange of BofL messages provides a level of confidence in the point-to-point connection. If you enable BofL locally, you must also configure the remote peer to enable BofL.

Nortel Networks recommends that you enable BofL for point-to-point connections between Nortel Networks peers. However, if such a connection is accomplished through a wide area transport service such as frame relay, X.25, or SMDS, you must disable BofL.

The router enables BofL messages by default.

Using the BCC

To enable or disable BofL messages, navigate to the serial prompt (for example,

box; serial/2/1 bofl

variable

) and type:

Configuring Synchronous Services

For example:

serial/2/1# serial/2/1#

Using Site Manager

See the BofL parameter on page A-70 for information.

308648-14.00 Rev 00

bofl enabled bofl disabled

2-5

Configuring WAN Line Services

Setting the BofL Timeout

The BofL Timeout parameter specifies the time between transmissions of BofL messages from this synchronous interface. This parameter is valid only when BofL is enabled.

By default, the BofL timeout period is 5 seconds. Timeout occurs when five periods elapse without both a successful frame transmission and a successful reception. When timeout occurs, the router disables and reenables the synchronous line. For example, with this parameter set to 5 seconds, the interface must successfully tran smit and rece i ve a fr ame within 25 seconds . T imeout occurs in 25 seconds.

Set the BofL timeout to a value from 1 to 60 seconds on the interface.

Using the BCC

To set BofL timeout, navigate to the serial prompt (for example, and type:

bofl-timeout

For example:

serial/2/1#

Using Site Manager

See the BofL Timeout para meter on page A-70 for information.

Setting the MTU

The maximum transmission unit (MTU) is the largest frame that the router can transmit on this line.

For X.25, specify a value of at least 5 bytes more than the maximum packet size for the packet level.

The MTU is 1600 bytes by default. Set the MTU from 3 to 4608 bytes on the interface.

integer

bofl-timeout 20

box; serial/2/1

)

2-6

308648-14.00 Rev 00

Using the BCC

Configuring Synchronous Services

To set the MTU size, navigate to the serial prompt (for example, and type:

integer

mtu

For example:

serial/2/1#

mtu 2000

Using Site Manager

See the MTU parameter on page A-71 for information.

Enabling or Disabling Remote Address Filtering

Set the Promiscuous parameter to specify whether the interface filters packets for addresses other than its own local ad dress , or wh eth er ad dress filtering is based on both the local and remote addresses.

With this parameter se t to enabled, th e interface receives all frames. By default, address filtering is disabled: the interface receives only frames destined for its local address. Enable or disable local and remote (promiscuous) address filtering on the interface.

box; serial/2/1

)

Using the BCC

To enable or disable address filtering, navigate to the serial prompt (for example,

box; serial/2/1 promiscuous

For example:

serial/2/1# serial/2/1#

Using Site Manager

See the Promiscuous parameter on page A-71 for information.

308648-14.00 Rev 00

) and type:

variable

promiscuous disabled promiscuous enabled

2-7

Configuring WAN Line Services

Configuring Clocking Signals

By default, the synchronous interface operates with an external clock source at 64102 b/s. You can configure the source and speed of synchronous timing signals by:

• Setting the Clock Source

• Setting the Internal Clock Speed

• Setting the External Clock Speed

Setting the Clock Source

The Clock Source parameter specifies whether the origin of the synchronous timing signals are supplied by the router (Internal) or by a network device (External).

With th is parame ter set to In terna l, the rou ter supp li es the re quired timi ng signal s. If you set the Clock Source parameter to Internal, set the Internal Clock Speed parameter as described in “

With this parameter set to External (the defau lt), an external network device supplies the required timing signals. In most cases, you should set this parameter to External. See “Setting the External Clock Speed” on page 2-10

Setting the Internal Cloc k Speed” on page 2-9.

2-8

Using the BCC

To set the clock source, navigate to the serial prompt (for example,

box; serial/2/1 clock-source

) and type:

variable

For example:

serial/2/1# serial/2/1#

clock-source internal clock-source external

Using Site Manager

See the Clock Source parameter on page A-72 for information.

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Configuring Synchronous Services

Setting the Internal Clock Speed

The Internal Clock Spee d parameter sets the cl ock speed of an internally supplied clock when the Clock Source parameter is set to Internal. You cannot set this parameter when the Clock Source parameter is set to External.

By default, the internal clock speed is 64 Kb/s. Set the clock speed for the internal clock to the desired data transmission rate across the synchronous line.

You can set the internal clock to:

• 1200, 2400, 4800, 7200, 9600, 19200, 32000, or 38400 b/s

• 56, 64, 125, 230, 420, 625, or 833 Kb/s

• 1.25, 2.5, or 5 Mb/s Certain routing protocols use this parameter value for route selection. If you

configure protocol prioritization, the router uses this parameter to calculate line delay. See Configuring Traffic Filters and Protocol Prioritization for information about protocol prioritization, latency, and queue depth.

Set the internal clock speed for the interface.

Using the BCC

To set internal clock speed, navigate to the serial prompt (for example,

serial/2/1 internal-clock-speed

For example:

serial/2/1# serial/2/1# serial/2/1#

Using Site Manager

See the Internal Clock Speed parameter on page A-72 for info rmation.

308648-14.00 Rev 00

) and type:

variable

internal-clock-speed clk32000b internal-clock-speed clk625k internal-clock-speed clk1mb

box

;

2-9

Configuring WAN Line Services

Setting the External Clock Speed

The External Clock Speed parameter sets the clock speed of an externally supplied clock when the Clock Source pa ramete r is set to Ex ternal. You cannot set this parameter when the Clock Source parameter is set to Internal.

By default, the external clock speed is 64102 b/s. Set the clock speed for the external clock to the data transmission rate that most closely corresponds to the speed of the e xternal clock. You can set the external clock to a value from 120 0 t o 6000000 b/s.

Certain routing protocols use this parameter value for route selection. If you configure protocol prioritization, the router uses this parameter to calculate line delay. See Configuring Traffic Filters and Protocol Prioritization for information about protocol prioritization, latency, and queue depth.

Using the BCC

To set external clock speed, navigate to the serial prompt (for example,

serial/2/1 external-clock-speed

) and type:

For example:

serial/2/1#

external-clock-speed 1200

Using Site Manager

See the External Clock Speed parameter on page A-84 for information.

Setting the Signal Mode

You use the Signal Mode parameter to set either balanced or unbalanced transmission on an interface, depending on the signaling mode of the connected device.

Balanced transmissi on uses two conductors to carry signals; unbalanced transmission uses one conductor to carry a signal, with a ground providing the

return path.

integer

box

;

2-10

308648-14.00 Rev 00

Using the BCC

Configuring Synchronous Services

T o set the signal mode, n aviga te to the serial prompt (for e xample, and type:

signal-mode

variable

For example:

serial/2/1# serial/2/1#

signal-mode balanced signal-mode unbalanced

Using Site Manager

See the Signal Mode parameter on page A-73 for information.

Enabling or Disabling RTS Signals

The RTS Enable parameter enables or disables the detection of request to send (RTS) signals on this interface.

Set this parameter to Enable if the connected device (for example, a modem or a KG84A cryptographic device) uses RTS/CTS flow control.

Enable or dis able RTS signals for the interface.

Using the BCC

box; serial/2/1

)

To enable or disable RTS signals, navigate to the serial prompt (for example,

box; serial/2/1 rts-enable

For example:

serial/2/1# serial/2/1#

Using Site Manager

See the RTS Enable parameter on page A-73 for information.

308648-14.00 Rev 00

) and type:

variable

rts-enable enabled rts-enable disabled

2-11

Configuring WAN Line Services

Enabling or Disabling Burst Count

The Burst Count paramete r provides performance t uning. E nable s ets s ingle -w ord DMA burst cycles; Disable sets eight-word burst cycles. You should keep the Burst Count parameter set to Enable. Disable the Burst Count parameter when excessive TxUflo or RxOflo errors occur on the Ethernet ports of the following:

• DSDE (5430 - Dual Synchronous, Dual Ethernet) link module

• DSE (5420 - Dual Synchronous, Single Ethernet) link module Disable this parameter on th e synchronous interface that is either runn ing at a

lower clock speed or carrying lower-priority traffic. If disabling Burst Count on only one DSDE interface does not eliminate errors on both Ethernet interfaces, then disable the Burst Count parameter on both interface s.

Using the BCC

To enable or disable burst count, navigate to the serial prompt (for example,

serial/2/1 burst-count

) and type:

variable

For example:

serial/2/1# serial/2/1#

burst-count enabled burst-count disabled

Using Site Manager

See the Burst Count parameter on page A-74 for information.

Specifying the Link-Level Protocol

The Service parameter specifies the link-level protocol for this interface. You can set the link-level protocol to one of the following:

• Transparent

• LLC1

•LAPB The synchronous interface is configured for LLC1 by default.

box

;

2-12

308648-14.00 Rev 00

Configuring Synchronous Services

Setting this parameter to Transparent enables raw HDLC mode. LLC1 specifies connectionless data gram servi ce; it i nsert s the HDLC a ddress and con trol fields at the beginning of the frame.

If X.25 is enabled on this line, this parameter must be set to LAPB. See “Setting the IFTF Pattern” on page 2-30

Set the link-level protocol for the interface.

Using the BCC

T o specif y the link- le v el protoc ol, na vigat e to the seri al pro mpt (for e xample,

serial/2/1 service

) and type:

variable

For example:

serial/2/1# serial/2/1# serial/2/1# serial/2/1#

service llc1 service transparent service llc2 service lapb

Using Site Manager

See the Service parameter on page A-74 for information.

Setting the Transmit Window Size

The Trans mit Window Siz e pa rameter con trols the num ber of I-fr ames th at ca n be transmitted without acknowledgment. The default is 1 frame.

Set the tran smit window size to a value from 1 to 7 I-frames.

Using Site Manager

box

;

See the Transmit Window Size parameter on page A-76 for information.

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Configuring WAN Line Services

Setting Minimum Frame Spacing

The Minimum Frame Spacing parameter specifies the minimum number of flags transmitted between adj acent frames on this interface. T he interface transmits 1 frame by default.

Set frame spa cing to a value from 1 to 32 flags for the interface.

Using the BCC

To set frame spacing, navigate to the serial prompt (for example, and type:

minimum-frame-space

integer

For example:

serial/2/1#

minimum-frame-space 3

Using Site Manager

See the Minimum Frame Spacing parameter on page A-77 for information.

Specifying Point-to-Point Addresses

One end of a point-to-point circuit is designated as data communications equipment (DCE) and is assigned an address of 01; the other end of the circuit is designated as data terminal equipment (DTE) and is assigned an address of 03.

Note:

The remote and local addresses must be 1 (DCE) or 3 (DTE) if you configure X.25 on a line.

If you configure a device with a local address of 1 and remote address of 3, you must configur e the de vic e a t the ot her e nd of th e point -t o-poin t cir cuit wi th a loca l address of 3 and remote address of 1.

box; serial/2/1

)

2-14

Conventional DCE/DTE addressing is inadequate, however, for multiple communication channels enabled by a common satellite link. As illustrated in

Figure 2-1

, a common satellite relay link provides a virtual point-to-point link

between routers A and X, B and Y, and C and Z.

308648-14.00 Rev 00

Configuring Synchronous Services

A B C

Virtual

circuits

X Y Z

LS0016A

Figure 2-1. Satellite Broadcast (Sample Topology)

Conventional addressing designates routers A, B, and C as DCE (address = 01) and routers X, Y, and Z as DTE (address = 03). If router A transmits a frame across the virtual point-to-point circuit to X, X (the intended recipient), Y, and Z all monitor the satellite broadcast. Because X, Y, and Z all perceive a properly addressed frame, all three accept delivery and attempt to process the frame contents, with unpredictable results.

To avoid such confusion, assign unique addresses to each end of a point-to-point circuit using the Local Address and Remote Address parameters. Be sure to reverse the local and remote addresses when you configure the other end of the point-to-point circuit.

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Configuring WAN Line Services

Local Address

The local interface receives only frames whose HDLC addresses match the Local Address parameter.

Using the BCC

To specify a local address, navigate to the serial prompt (for example,

serial/2/1 local-address

) and type:

variable

box

;

For example:

serial/2/1#

local-address 3

Using Site Manager

See the Local Address parameter on page A-77 for information.

Remote Address

The router uses the remo te address as the HDLC addr ess for all frames transmitted by this interface.

Using the BCC

To specify a remote address, navigate to the serial prompt (for example,

box; serial/2/1 remote-address

) and type:

variable

For example:

2-16

serial/2/1#

remote-address 1

Using Site Manager

See the Remote Address parameter on page A-78 for information.

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Viewing the Configured WAN Protocol

You can view the WAN protocol that is enabled on a synchronous circuit. However, do not change the current value.

Configuring Synchronous Services

Caution:

Changing the WAN protocol does not reconfigure the interface, and

could disable the interface.

Using the BCC

To vie w t he configured WAN protocol, na vig ate t o the seri al pr ompt ( for e xa mple,

box; serial/2/1

serial/2/1#

) and type:

wan-protocol ?

The configured WAN protocol is listed as the current value.

Using Site Manager

See the WAN Protocol parameter on page A-79 for information.

Setting Pass-Through Addresses

You can assign a local media access control (MAC) address to the local interface using the Pass Thru Local Address parameter. This address becomes the source address of packets that are bridged to the destination MAC address.

You assign the destination MAC address using the Pass Thru Remote Address parameter. This address becomes the destinati on MAC address of packets that are bridged to the local MAC address.

Always reverse the local and remote MAC addresses at the remote synchronous pass-through interface.

When assigning addresses, use any unique MAC address of exactly 12 hexadecimal digits. Make sure that the second digit in the address is a zero (for example, 10fffabc5432).

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Configuring WAN Line Services

Setting the Pass Thru Remote Address

Using the BCC

To set the pass thru remote address, navigate to the serial prompt (for example,

box; serial/2/1

) and type:

passthru-remote

mac-address

For example:

serial/2/1#

passthru-remote 10fffabc5431

Using Site Manager

See the Pass Thru Remote Address parameter on page A-79 for information.

Setting the Pass Thru Local Address

Using the BCC

To set the pass thru local address, navigate to the serial prompt (for example,

box; serial/2/1 passthru-local

) and type:

mac-address

For example:

serial/2/1#

passthru-local 10fffabc5432

Using Site Manager

See the Pass Thru Local Address parameter on page A-78 for information.

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Setting the CRC Size

The cyclic redundanc y ch eck (CRC) size spe cif ies an error -det ection sch eme. You can choose either 16 bit (standard ITU-T) or 32 bit (extended) frame check sequence ( FCS) to detect errors in the packet.

Set a CRC size for the interface. The local and remote ends of the synchronous connection must be configured for the same CRC size.

Using the BCC

Configuring Synchronous Services

To set the CRC size, navigate to the serial prompt (for example, and type:

crc-size

variable

For example:

serial/2/1# serial/2/1#

crc-size crc16bit crc-size crc32bit

Using Site Manager

See the CRC Size parameter on page A-79 for information.

Setting the Signaling Method

You can specify the signaling method that the router uses for this line using the Sync Media Type parameter. Available media types are as follows:

• Default

•T1

•E1

• RAISEDTR

•V25BIS

• ISDN BRI

• ISDNLEASEDLINE

•HAYES

box; serial/2/1

)

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Configuring WAN Line Services

Using the BCC

To set the medi a t ype, navigate to the serial prompt (for e xa m ple , and type:

media-type

variable

For example:

serial/2/1#

media-type t1

Using Site Manager

See the Sync Media Type parameter on page A-80 for information.

Enabling or Disabling DSR Polling

By default, a synchronous interface does not monitor the data set ready (DSR) signal. If you set this par ameter to Enable , the synchr onous dr i ver is enabl ed when the DSR is detected. When the DSR is no longer detected, the driver is disabled. Enable this parameter only if you plan to use dial-up services.

Enable or disable synchronous polling of DSR for the interface.

Using Site Manager

See the Sync Polling parameter on page A-82 for information.

box; serial/2/1

)

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Setting the Line Coding

On AN, ASN, or System 5000 routers, and on a router with an Octal Sync link module, you can spe cify the lin e codi ng of the p hysi cal s ynchron ous l ine t o match the line coding of a device at the other end of the line. Specify the line coding as follows:

Table 2-2. Line Coding Options

BCC Option Site Manager Option Description

nrz NRZ The default; used for nonreturn to zero

nrzi NRZI Used for nonreturn to zero inverted coding nrzimark NRZI Mark Used for nonreturn to zero inverted mark

Using the BCC

T o set the line coding for this interface, navigate to the serial prompt (for example,

box; serial/2/1

) and type:

Configuring Synchronous Services

coding

sync-line-coding

variable

For example:

serial/2/1#

sync-line-coding nrzimark

Using Site Manager

See the Sync Line Coding parameter on page A-84 for information.

Configuring KG84A Security

KG84A is a cryptographic device used to secure data transmitted over a point-to-point synchronous line.

Nortel Networks KG84A support allows the router to use the encryption services of a KG84A device. In a KG84A configuration, the KG84A device is usually placed between the router and a modem. The KG84A device acts as the DCE for the attached router. Another KG84A device must be located at the other end of the point-to-point connection so that encrypted data can be decrypted (Figure 2-2)

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Configuring WAN Line Services

Router

Figure 2-2. KG84A Network Configuration

KG84A

MODEM

The Nortel Networks router attaches to the KG84A device using a modified V.35 synchronous cable. The encryption/decryption process is usually transparent to the router. However, occasionally, two KG84A devices can lose cryptographic synchronization. When this occurs, the modified cable allows the router to initiate cryptographic resynchronization. The modified cable also allows the router to detect and monitor the local KG84A device resynchronization, whether the resynchronization is initiated locally or remotely by a KG84A device.

The router detects the loss of synchronization between KG84A devices by monitoring the number of FCS errors and valid frames received. If the router detects FCS errors and it does not re ceive a valid frame within a time period you specify, the router requests resynchronization. The router also requests resynchronizati on if it deter mines th at the previous resynch roniz ation r equest w as not completed in the specified time period.

You can also force a resynchronization of the local KG84A device by pressing its RESYNC button. The router can de tect this type of remote resynchr onization and can request a new one if resynchronization is not completed in the specified time period.

MODEM

KG84A

Router

LS0017A

2-22

Use the following parameters in the Edit SYNC Parameters window to configure KG84A support on synchronous lines that connect to KG84A cryptographic devices:

• KG84A Cycle

• KG84A Sync Loss Interval

• KG84A Remote Resync Wait

• KG84A Sync Pulse

Note:

Be sure to als o set the RTS Enable parameter to Enable.

308648-14.00 Rev 00

Configuring Synchronous Services

KG84A Cycle

By default, the t imer c ycle is set to 10 0 millise conds (ms) . This c ycle v al ue is use d by the timers on the other KG84A devices on the network. This value also becomes the polling cycle for monitoring FCS errors.

Set the KG84A timer cycle to 5, 10, 25, 50, 100, 200, or 500 ms on this interface.

Using Site Manager

See the KG84A Cycle parameter on page A-80 for information.

KG84A Sync Loss Interval

By default, the router waits 50 cycles after detecting an FCS error to receive a valid frame before declaring a loss of synchronization.

Set the KG84A loss interval to 5, 10, 25, 50, 100, 200, or 500 cycles on this interface.

Using Site Manager

See the KG84A Sync Loss In terval parameter on page A-81 for information.

KG84A Remote Resync Wait

By default, the router waits 200 cycles when synchronization is lost and a remotely initiated res ynchron izat ion h as been d etect ed. You can set the nu mber o f cycles that the router waits for the remote KG84A device to complete a resynchronization operation to 2, 5, 10, 25, 50, 100, 200, or 500. After this number of cycles, the router determines that the resynchronization failed and initiates another resynchronization.

Note that if you press the RESYNC but t on on the loca l KG8 4A device, the router responds as if it detected a remotely initiated resynchronization.

Use diffe rent set tings a t each end of th e point- to-point link to av oid a possi ble race condition.

Configure the KG 84A remote resynchronization wait on this interface.

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2-23

Configuring WAN Line Services

Using Site Manager

See the KG84A Remote Resyn c Wait parameter on page A-81 for info rmation.

KG84A Sync Pulse

By default, the rout er tr ans m it s a 10 ms pulse to the KG84A de vi ce when it needs to initiate KG84A resynchronization. The router uses the RTS signal of the V.35 interface, whic h connect s to the KG84A de v ice ’s synchronous signal via a special cable, to initiate KG84A resynchronization. When the router needs to initiate KG84A resynchronization, it changes the value of the synchronous signal from low to high.

The KG84A pulse length is the number of milliseconds that the synchronous signal retains its high value. Set the pulse length from 2 to 4096 ms on this interface.

Using Site Manager

See the KG84A Sync Pulse parameter on page A-82 for information.

Specifying the Network Link Level

By default, the network link level for a synchronous point-to-point connection is NET2.

Change this parameter to GOSIP when the s ynchronous po int-to- point connec tion is part of a Government Open Systems Interconnection Protocol (GOSIP)-compliant network (such as the Department of Defense network).

Change this parameter to SYNC_TYPE_C03 when you are running X.25 on the QSYNC, DST, or ESAF synchronous link module.

Set the network link level for the interface.

Using Site Manager

See the Network Link Level parameter on page A-83 for information.

2-24

308648-14.00 Rev 00

Setting the Retry Count

By default, the router makes 16 attempts to retransmit a frame before a line is declared down. Specify the number of retransmission attempts, from 1 to 64, for the interface.

Using Site Manager

See the Retry Count parameter on page A-75 for information.

Setting the Link Idle Timer

By default, the router determines that a synchronous interface is idle after 9 seconds. The router disables an idle line.

Set the Link Idle Timer parameter to a value from 1 to 9999 seconds.

Using Site Manager

See the Link Idle Timer parameter on page A-75 for information.

Configuring Synchronous Services

Enabling or Disabling Extended Control

By default, the control fields of all S- and I-frames are 1 octet in length, and I-frame numbering is Mo dulo 8. With the Exte nded Control (S and I frames) parameter, you can extend the control fields of S- and I-frames to 2 octets in length, and numbering of all I-frames to Modulo 128.

Enable or disable extended control of S- and I-frames for the in terface.

Using Site Manager

See the Extended Control (S and I frames) parameter on page A-76 for information.

308648-14.00 Rev 00

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Configuring WAN Line Services

Enabling or Disabling Receiver Ready Signals

By default, the synchronous interface does not send a receiver ready (RR) signal when the Link Idle Timer expires. Enable the Idle RR Frames parameter if you want the router to send RR signals.

Enable or disable idle RR signals for the interface.

Using Site Manager

See the Idle RR F rames parameter o n page A-80 for information.

Setting the Cable Type

If the synchrono us inter face is connec ted t o a dial -up de vice for switched services , you can specify the cable interface type of the device that connects the dial unit. You can select one of the following cable types:

•Null

•RS232

•RS422

•V35

•X21

2-26

By default, the cable type is set to Null. If you start SDLC on your interface, the system sets the cable type to RS232.

Using the BCC

To set the cable type, navigate to the serial prompt (for example,

box; serial/2/1

and enter:

cable-type <type>

type is one of the following:

null rs232 rs422 v35 x21

308648-14.00 Rev 00

)

For example, the following command sets the cable type to V35:

serial/2/1# cable-type v35

Using Site Manager

See the Cable Type parameter on page A-83 for information.

Setting the Retry Timer

By default, the rou te r waits 3 seconds for a r esponse from the interf ac e. Whe n th e timer expires, th e router:

Sends link control frames.

Resends the frames up to the value of the Retry Count parameter.

Disconnects the link.

Set the Retry Timer parameter to a value from 1 to 9999 seconds.

Using Site Manager

Configuring Synchronous Services

See the Retry Timer parameter on page A-75 for information.

Enabling or Disabling Extended Addressing

By default, the router does not test the address length of frames on a synchronous interface. With the Extended Addres s parameter enabled, the rout er tests the first bit of the address to determine the length of the address, in octets.

Enable or disable extended addressing for the interface.

Using Site Manager

See the Extended Address parameter on page A-76 for information.

308648-14.00 Rev 00

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Configuring WAN Line Services

Enabling or Disabling Remote Loopback Detection

By enabling remote loopback detection on an interface, you can configure the router to automatically disable the interface upon detecting its own BofL messages. If BofL is enabled, the device driver disables the interface upon receiving i t s own BofL pac k et s, assuming that the link h as been put into loop bac k mode. This function is disabled by default.

Using the BCC

To enable or disable remote loopback detection, navigate to the serial pr ompt (f or example,

box; serial/2/1

) and type:

remote-loopback-detection

For example:

serial/2/1# serial/2/1#

Using Site Manager

See the Remote Loopback Detection parameter on page A-84 for information.

Setting a Priority

On a synchronous interface configured for dial or switched services, you can assign a priority number (1 to 50) to e ach line in the same demand or back up pool.

The lower the number, the higher the priority. For example, the router uses a line of priority 1 before it uses a line of p riority 2.

Set the priority for the inte rface.

Using the BCC

To set a priority number, navigate to the serial prompt (for example,

serial/2/1

variable

remote-loopback-detection enabled remote-loopback-detection disabled

) and type:

box

;

2-28

priority

integer

For example:

serial/2/1#

priority 4

308648-14.00 Rev 00

Using Site Manager

See the Sync Priority parameter on page A-86 for information.

Setting the Hold Down Time

On a synchronous interface configured for dial services, you can specify a time period (0 to 9999 seconds) for the router to wait before bringing down a backup line. This de lay allows time for th e primary line t o fully recover befor e deactivating the backup line.

For a dial-on-demand interface, the Hold Down Time parameter is set to 3 seconds by default.

For other inter fa ce s, the Hold Down Ti me para met er is set to 0 b y def aul t. Set thi s parameter to a value from 0 to 9999 seconds.

Using the BCC

Configuring Synchronous Services

To set the hold down time, nav ig at e t o the ser i al pr ompt (for example,

) and type:

2/1 hold-down-time

integer

For example:

serial/2/1#

hold-down-time 0

Using Site Manager

See the Hold Down Time parameter on page A-83 for information.

Setting the B Channel Override

On AN and ANH routers with ISDN support only, you can connect the ISDN B channel to a specific serial communications controller (SCC). By default, the B channel is determined by the connector.

You can use the Sync B Channel Override parameter to specify which B channel this interface is using for ISDN. Select BCHANNEL1 or BCHANNEL2 to explicitly assign the B channel.

box; serial/

308648-14.00 Rev 00

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Configuring WAN Line Services

You can set the B channel to one of the following:

•DEFAULT

• BCHANNEL1

• BCHANNEL2

• FLOATINGB If your ISDN service provider offers only 2B + D service, the FLOATINGB

option enables you to use only one B channel for dial service applications. Floating B is an alternative if you cannot purchase 1B + D service.

Select FLOATINGB to use only one B channel of ISDN, which becomes BCHANNEL1 or BCHANNEL2, depending on the call setup proced ure s. COM1 and COM2 become available in this mode.

Configure the B channel on an AN or ANH ISDN interface.

Using the BCC

To specify the B channel override , navigate to the serial prompt (for example,

box; serial/2/1

) and type:

bchannel-override

For example:

serial/2/1#

bchannel-override bchannel2

Using Site Manager

See the Sync B Channel Override parameter on page A-85 for information.

Setting the IFTF Pattern

The router transmi ts an int erframe t ime f il l (I FTF) pa ttern when there is no dat a to transmit on a synchronous line. There are two IFTF patterns:

• HDLC Flags, an 0x7E pattern (0 1 1 1 1 1 1 0)

•Idles, an 0xFF pattern (1 1 1 1 1 1 1 1)

2-30

variable

308648-14.00 Rev 00

HDLC Flags is the default IFTF pattern for all synchronous media types except ISDN BRI. For ISDN BRI , the def ault patte rn is Idle s. To use these defaults, l ea v e the Sync Force IFTF parameter set to Default. Or, you can override the defaults by setting this parameter to Force Flags or Force Idles.

For a dial-on-demand interface, set the Sync Force IFTF parameter to Force Idles.

Using Site Manager

See the Sync Force IFTF parameter on page A-85 for information.

Configuring Asynchronous Services

The implementation of asynchronous services differs among Nortel Networks routers. On Octal Sync link modules, all synchronous net modules, and BayStack router COM ports, yo u ca n c onfigure asynchron ous communication from th e Ed it SYNC Parameters window by:

• Setting the WAN Serial Interface Type

• Setting the Asynchronous Baud Rate

Configuring Synchronous Services

For all other synchronous link modules, these parameters are not available. See Chapter 3 for information about additional asynchronous services on BayStack AN and ANH routers.

Setting the WAN Serial Interface Type

The serial interface is set for synchronous operation by default. Set this parameter to Async to select asynchronous communication; set it to Pasync for polled asynchronous communication.

Using the BCC

To set the WAN serial interface type, navigate to the serial prompt (for example,

box; serial/2/1 wan-type

For example:

serial/2/1#

308648-14.00 Rev 00

) and type:

variable

wan-type asynchronous

2-31

Configuring WAN Line Services

Using Site Manager

See the WAN Serial Interface Type parameter on page A-86 for info rmation.

Setting the Asynchronous Baud Rate

With the WAN Serial Interface Type parameter set to Async, you can set the transmission speed (in bits per second) between the router and the modem. You control the baud rate f or asynchro nous PPP using the Asy nc Baud Rate parameter.

Set this parameter to a value that is greater than or equal to the speed at which the modem connects, but that is independent of that speed. For example, you set a V.34 modem to its maximum modular connection speed of 28800 Kb/s or higher. However, you could set the baud rate for a V.42bis or MNP 5 data compression modem with a high (4 to 1) compression ratio to 115200 baud.

By default, the asynchronous baud rate is 9600. Select a baud rate from 1200 to 115200 baud.

Using Site Manager

See the Async Baud Rate parameter on page A-86 for information.

Configuring Polled Asynchronous over TCP/IP Line Parameters

The implementation of polled asynchronous over TCP/IP (AOT) uses the following line parameters:

• Pasync Parity Type

• Pasync Data Bits

• Pasync Stop Bits

• Pasync Baud Rate For more information about configuring polled AOT, see Configuring Polled AOT

Transport Services.

2-32

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Configuring Synchronous Services

Setting the Pasync Parity Type

The Pasync Parity Type parameter sets the error-detection method for isolating AOT packets that were altered or damaged during transmission. Asynchronous equipment typically adds a parity bit to the end of a packet before transmission. This allows the receiving router to detect a tra nsmission e rror if it receives a packet with an unexpected parity.

The parity type options are Odd, Even, High (1), Low (0), or None.

Using Site Manager

See the Pasync Parity Type parameter on page A-87 for information.

Setting the Pasync Data Bits

The Pasync Data Bits parameter sets the length of a polled AOT packet to a specific n umber of da ta bit s. The parameter options are five , si x, seven, and e ight. Select the number of data bits that is appropriate for your network. The default setting is eight.

Using Site Manager

See the Pasync Data Bits parameter on page A-87 for information.

Setting the Pasync Stop Bits

The Pasync Stop Bits paramete r sets the interval at the en d of a transmitted pol led AOT packet, allowing the receiving router to pause before accepting the next packet. More stop bits create a longer pause at the receiving router. Specify either one or two stop bits. The default setting is two.

Using Site Manager

See the Pasync Stop Bits parameter on page A-87 for information.

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Configuring WAN Line Services

Setting the Pasync Baud Rate

The Pasync Baud Rate parameter sets the transmission spee d for polled AOT packets between primary and secondary routers over a TCP connection. The parameter options are 150, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, and

57600. The default setting is 600.

Using Site Manager

See the Pasync Baud Rate parameter on page A-88 for information.

Editing LAPB Protocol Services

The Link Access Procedure Balanced (LAPB) protocol is a version of the high-level data link control (HDLC) protocol, which is an OSI data link layer standard. This section describes the following:

• LAPB Implementation on Nortel Networks Routers

• LAPB Parameters

LAPB Implementation on Nortel Networks Routers

The implementation of the LAPB protocol differs among Nortel Networks routers. On the AN, ANH, ARN, ASN, a nd System 5000 routers, an d on the BN and LN software. For all other link modules, LAPB is implemented in the hardware, and you cannot configure LAPB line parameters.

Nortel Networks routers use LAPB services to initialize the link between the router and the local DCE, and to frame X.25 data p ack ets bef ore transmi tting them to the DCE. X.25 uses the LAPB protocol at the data link layer to:

• Initialize the link between the DTE and the local DCE

• Frame X.25 data packets before transmitting them to the DCE The LAPB information field contains the X.25 packets.When an X.25 packet

reaches the destination router, the LAPB protocol strips away the LAPB frame and delivers the packet to the network layer for further processing. For detailed information on X.25, see Configuring X.25 Services.

2-34

routers with the Octal Sync link module, LAPB is implemented in the

308648-14.00 Rev 00

LAPB Parameters

This section describe s ho w to edit LAP B parameters using Site Mana ger. It cov ers the following topics:

• Enabling or Disabling LAPB Services

• Setting the Station Type

• Setting the Control F i eld

• Setting the Maximum N1 Frame Size

• Setting the Window Size

• Setting the Maximum N2 Retry Count

• Setting the Maximum T 1 Acknowledge Timer

• Setting the Maximum T 2 Acknowledge Timer

• Setting the Maximum T3 Disconnect Timer

• Setting the Link Setup Action

• Enabling or Disabling Test Exchange Identification (XID) Frames

Configuring Synchronous Services

• Enabling or Disabling Receiver Ready (RR) Frames

• Selecting the Local Command or Response Address

• Viewing the WAN Protocol When you edit an Octal S ync l i nk modul e l i ne, or any synchronous line o n Nor tel

Networks AN, ANH, ARN, ASN, or System 5000 routers, the router automatically conf igures th e LAPB protocol if you c onfigu re a circuit for the X.25 protocol. The Edit SYNC Para meters window for these lines includes an additional button for editing LAPB parameters. Click on the LAPB button to display the Edit LAPB Parameters window (Figure 2-3)

308648-14.00 Rev 00

2-35

Configuring WAN Line Services

2-36

Figure 2-3. Edit LAPB Parameters Window

Enabling or Disabling LAPB Services

The router enables LAPB line services when you configure a synchronous circuit for the X.25 protocol. You can disable and reenable LAPB services on the interface without moving any cables.

Using Site Manager

See the Enable paramet er on page A-18 for information.

Setting the Station Type

The Station Type parameter identifies whether the de vice is a DTE or DCE for this interface.

If you have DTE devices, select DTE. If you have DCE devices, select DCE.

308648-14.00 Rev 00

Configuring Synchronous Services

If you do not want to assign a specific station type, and instead want the network to determine the stati on ty pe, selec t DXE. This v al ue ind icate s that th e router is in unassigned mode; it is neither a DTE nor a DCE. If you select DXE, the router will send an exch ange ident if ication (XID), b ut ne gotiat ion will not occur until th e network assigns a station type.

By default, the station type is DTE. Set the station type of the interface to DCE or DTE.

Using Site Manager

See the Station Type parameter on page A-18 for information.

Setting the Control Field

The Control Field parameter specifies the desired window size, or modulo, of the sequence numbering the rout er uses to number frames. The parameter opt i ons ar e as follows:

• Modulo 8

• Modulo 128 By default, the Cont rol Fi eld pa rame ter i s set to Modul o 8. Set the c ontrol f iel d on

the interface.

Using Site Manager

See the Control Field parameter on page A-19 for information.

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Configuring WAN Line Services

Setting the Maximum N1 Frame Size

The Max N1 Frame Size parameter specifies the frame size, in bytes, for a frame that the router or network transmits. This number excludes flags and 0 bits inserted for transparency.

By default, the Max N1 Frame Size parameter is set to 1600 bytes. Select a frame size from 3 to 4500 bytes to suit your network configuration.

Using Site Manager

See the Max N1 Frame Size parameter on page A-19 for information.

Setting the Window Size

The Window Size parameter specifies the default transmit and receive window size for the interface. This value is the maximum number of unacknowledged frames that you allow from the router or network at any one time.

By default, the window size is 7 frames. Select a window size from 1 to 127 frames to suit your network configuration.

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Using Site Manager

See the Window Size parameter on page A-19 for information.

Setting the Maximum N2 Retry Count

The Max N2 Retries parameter determines the value of the N2 retry count, which is the number of retransmission attempts the router makes, per frame, before it considers the l ine to b e do wn. The retry c ount i s the max imum nu mber of attem pts following the expiration of the T1 timer.

By default, the number of times the router tries to retransmit is 10. Set the number of retries from 1 to 64 on this interface.

Using Site Manager

See the Max N2 Retries parameter on page A-20 for information.

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Configuring Synchronous Services

Setting the Maximum T1 Acknowledge Timer

The Max T1 Ackn owledge Timer parameter specifies the time, in seconds , that the router waits for an acknowledgment of a frame that it has sent to the network.

By default, this timer is set to 3 seconds. Set the maximum time that the router should wait for a frame acknowledgment from the network to a value from 1 to 9999 seconds.

Using Site Manager

See the Max T1 Acknowledge Timer parameter on page A-20 for information.

Setting the Maximum T2 Acknowledge Timer

The Max T2 Ackn owledge Timer parameter specifies the time, in seconds , that the router waits before sending an acknowledgment for a sequenced frame.

The default value of 1 means that the router does not delay before generating an acknowledgment.

Set the amount of time that you want the router to wait before acknowledging a sequenced frame to a value from 1 to 9999 seconds.

Using Site Manager

See the Max T2 Acknowledge Timer parameter on page A-21 for information.

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Configuring WAN Line Services

Setting the Maximum T3 Disconnect Timer

The Max T3 Disconnect T i mer spec if ie s th e time, in sec onds , that t he rout er wa its before determining that the link is disconnected.

By default, this timer is set to 60 seconds. A value of 1 indicates that once the router completes the frame exchange to bring down the link, it considers the link disconnected.

Set the amount of time that you want the router to wait before it decides that the link is disconnected to a value from 1 to 9999 seconds.

Using Site Manager

See the Max T3 Disconnect Timer parameter on page A-21 for information.

Setting the Link Setup Action

The Initiate Link Setup Action parameter identifies whether the router initiates link setup or waits for the network to initiate link setup.

Select Active if you want the router to initiate link setup, or select Passive if you want the network to initiate link setup. Link setup is active by default.

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Set the Initiate Link Setup Action parameter to Active or Passive.

Using Site Manager

See the Initiate Link Setup A ction parameter on page A-22 fo r information.

Enabling or Disabling Test Exchange Identification (XID) Frames

The Enable Rx/Tx of XID Frames parameter enables or disables the transmission and reception of test XID frames by the router.

Select Enable to allo w the route r to send XID frames. Select Disable to pr ev ent the router from sending XID frames.

Enable or disable the transmission of XID frames on this interface.

Using Site Manager

See the Enable Rx/Tx of XID Frames parameter on page A-22 for information.

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Configuring Synchronous Services

Enabling or Disabling Receiver Ready ( RR) Frames

The Idle RR Frames parameter ena ble s or disables the tran smis si on an d reception of receiv er rea dy (RR) fra mes during p eriods when there ar e no infor mation frame exchanges.

By default, the router does not transmit RR frames on the LAPB interface. When this parameter is set to On, an RR frame is transmitted when no traffic is present on the physical media.

Enable or disable transmission of RR frames on this interface.

Using Site Manager

See the Idle RR F rames parameter o n page A-23 for information.

Selecting the Local Command or Response Address

The Command/Response Address parameter specifies the local command or response address, which is the DTE or DCE value.

Select DTE for the DTE address; sel ec t DCE for the DCE address. The address is set to DTE by default.

Set the local address on this interface.

Using Site Manager

See the Command/Response Address parameter on page A-22 for information.

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Configuring WAN Line Services

Viewing the WAN Protocol

You can see which protocol, Standard (PPP) or X.25, is enabled on this interface. Do not change the current value.

Caution:

Changing the WAN protocol does not reconfigure the interface, and could disable it. To change the configured WAN protocol, delete and re-create the WAN circuit. See Configuring and Managing Routers with Site Manager for instructions.

Using Site Manager

See the WAN Protocol parameter on page A-23 for information.

Displaying EIA Signals

You can display Electronic Indus tries Ass ociation (EIA) s ignals on t he seria l ports of Nortel Networks AN request to send (RTS), clear to send (CTS), data send ready (DSR), data terminal ready (DTR), and data carrier detect (DCD) signals on any serial port including RS-232-C, RS-422, and V.35 interfaces.

Only the true status of the EIA signals at the serial port are displayed,

Note:

and they are not inter preted base d on the ca ble typ e. F or ca ble ty pes o ther th an straight-through cables, such as crossover cables, you must interpret the signals.

, ARN™, ASN™, and BN® routers. You can display

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You can display the EIA signals on a specific serial port by using the

show

command of either the Technician Interface (TI) or the BCC. For information on using s how commands with the TI, see Using Technician

Interface Scripts. For the BCC, use the command

show serial eia-status

. An active signal is displayed as “H,” an inactive signal is displayed as “L.” An asterisk (*) denotes a signal whose state has changed since the last time the signal status was reset.

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Example

Configuring Synchronous Services

serial/1/1# Slot Conn Circuit RTS CTS DSR DCD DTR

------ ------ ------ ------ ------ ------ ------ -----1 2 S11 H L* L H* L 1 entry(s) found

show serial eia-status

Resetting EIA Signal Status

You can reset the state change status of th e EIA signal s being moni tored usin g the BCC. Use the BCC command specific serial port.

Example

serial/1/1/# Slot Conn Circuit RTS CTS DSR DCD DTR

------ ------ ------ ------ ------ ------ ------ -----12S11HLLHL 1 entry(s) found

eia-reset

to reset EIA signal change status on a

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Chapter 3

Configuring BayStack AN and ANH

Asynchr o nous Services

This chapter describes how to edit asynchronous services for BayStack AN or ANH serial circuits using Site Manager.

On AN and ANH COM2 circuits only, the Configuration Manager displays the Edit ASYNC Parameters window (Figure 3-1) protocol from the WAN Protocols window.

This chapter contains the following sections:

Section Page

when you select the asynchronous

Enabling or Disabling the Asynchronous Driver 3-2 Setting the MTU 3-3 Specifying the TCP Start Protocol 3-3 Setting the Baud Rate 3-4 Setting the Idle Timer 3-5 Setting the TCP Receive Window Size 3-5 Setting the TCP Keepalive Message Interval 3-5 Setting the TCP Inactive Limit 3-6 Setting the Maximum Transmit Queue Length 3-6 Setting the Maximum Receive Queue Length 3-6

For a description of all Site Manager parameters for asynchronous line, see Appendix A, “Site Manager Parameters.”

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3-1

Configuring WAN Line Services

See Chapter 1 for information about accessing the Edit ASYNC Parameters window. Use the window’s scroll bar to view all of the asynchronous line parameters.

Figure 3-1. Edit ASYNC Parameters Window

Enabling or Disabling the Asynchronous Driver

The router enables asynchronous line services when you add the asynchronous WAN protocol on AN and ANH COM2 circuits. You can disable and r eenabl e the interface without moving any cables.

See the Enable parameter on page A-2 for information.

3-2

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Configuring BayStack AN and ANH Asynchronous Services

Setting the MTU

The largest packet size that this interface can transmit over TCP is the maximum transmissi on unit (MTU).

By default, the MTU is 1000 bytes. Set the MTU from 3 to 1580 bytes. See the MTU parameter on page A-2 for information.

Specifying the TC P Start Protocol

There are three options for the TCP start protocol:

• Answer -- Advises local TCP to wait for a connection request

• Loop -- Tests the asynchronous cable

• Originate -- Advises local TCP to initialize a connection to the specified

remote IP address, specified in the Remote IP Address parameter Select the start protocol for this in terface. With the Start Protocol parameter set to Originate, you must also configure the

following:

• Remote IP address

• Remote port

• Local port See the Start Protocol parameter on page A-3 for information.

Setting the Remote IP Address

The router uses the remote IP address only when the asynchronous Start Protocol parameter is set to Originate.

The Remote IP Addr parameter specifies a remote TCP host with which the router communicates using the asyn chr onou s int er f ace. You can specify any valid 32-bit IP address in dotted-decimal notation as the remote IP address for this interface.

See the Remote IP Addr parameter on page A-3 for information.

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3-3

Configuring WAN Line Services

Specifying the Remote Port

The router uses the remot e port number only when t he Sta rt Protocol parameter is set to Originate. The remote port number specifies a remote port for the TCP connection.

By default, the remote port number is 7. You can specify any valid remote port number from 1 to 65535 for this interface.

See the Remote Port parameter on page A-3 for information.

Specifying the Local Port

The router uses the local port number only when the Start Protocol parameter is set to Originate. The local port number specifies a local port for the TCP connection for asynchronous communi cat ions.

By default, the local port number is 2100. You can specify any valid local port number from 1 to 65535 for this interface.

See the Local Port parameter on page A-4 for in formation.

Setting the Baud Rate

The Baud Rate parameter specifies the line speed for this asynchronous interface. By default, the baud rate is 9600. Select one of the following valid baud rates:

•300

•1200

•2400

•4800

•9600

• 19200 See the Baud R ate parameter on page A-4 for info rmation.

3-4

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Configuring BayStack AN and ANH Asynchronous Services

Setting the Idle Timer

By default, the router determines that the asynchronous interface is idle after 20 seconds of inactivity. The router disables an idle line.

You can set the idle timer from 1 to 300 seconds. See the Idle Timer parameter on page A-4 f or information.

Setting the TCP Receive Window Size

By default, the router set s the TCP rece ive window size for asynchronous pa ck e ts to 4096 bytes.

Set the Receive Window parameter to a value from 512 to 65535 bytes. See the Receive Window parameter on page A-5 for information.

Setting the TCP Keepalive Message Interval

The TCP keepalive message interval specifies how often the local router sends TCP keepalive messages to a remote router. The default interval is 8 seconds.

When the local router sends a TCP keepalive message on the asynchronous interface, it expects an acknowledgment (ACK) from the remote rout er. The ACK then resets the inactive limit timer.

If the local router do es not re ceive an ACK from the remote router wi thin t he time limit specified by the TCP Inactive Limit parameter, the TCP connection is disabled. To prevent an error or alarm condition, set the TCP Inactive Limit parameter to a value that allows enough time for multiple TCP keepalive messages.

Set the TCP KeepAlive parameter to a value from 3 to 180 seconds. The router uses this parameter with the TCP Inactive Limit parameter.

See the TCP KeepAl ive parameter on page A-5 for information.

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3-5

Configuring WAN Line Services

Setting the TCP Inactive Limit

When the TCP inactive limit timer expires, the TCP connecti on b etwe en t he l ocal router and the remote router is lost. By default, the TCP connection on an asynchronous interface times out in 300 seconds.

To pre v ent a TCP co nnecti on lo ss, set thi s par ameter to a v a lue t hat a llows enough time for multiple TCP k eep al ive messag es and ACKs f rom t he re mo te TCP r out er.

If the interface is listening for an incoming connection request, you can specify a negative value for this parameter to mark the connection as inactive, and defer resetting the connection until a connection request is received.

Set the TCP Inactive Limit parameter to a value from -65536 to 65535 seconds. See the TCP In active Limit parameter on page A-6 for info rmation.

Setting the Maximum Transmit Queue Length

The Cfg TxQ Length parameter specifies the maximum length of the transmit queue for the asynchronous interface.

If the driver transmit queue length is larger than the value of this parameter, it is reduced to the value of this parameter.

Set the maximum transmit q ueue length for this int erface to a value from 1 to 255 bytes.

See the Cfg TxQ Length parameter on page A-6 for information.

Setting the Maximum Receive Queue Length

The Cfg RxQ Length parameter specifies the m aximum receive queue l ength for an asynchronous interface.

If the driver receive queue leng th is larger than the value of this para meter, it is reduced to the value of this parameter.

Set the maximum receive queue length for this interface to a value from 1 to 255 bytes.

See the Cfg RxQ Length parameter on page A-7 for information.

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Chapter 4

Configuring BayStack DSU/CSU Services

You configure and customize services for an internal DSU/CSU installed in a BayStack AN, ANH, or ARN router by setting parameters as described in the following sections:

Section Page

Configuring DSU/CSU Services 4-2 Customizing DSU/CSU Services Using the BCC or Site Manager 4-3 Configuring V.54 Loopback Tests 4-8

BayStack routers support an optional integrated DSU/CSU serial adapter module with one interface connector, for direct connection to Telco leased-line circuits.

Note:

that already contains the appropriate WAN circuits for the hardware configuration. See Configuring and Managing R outers with Site Manager for information about adding circuits to a configuration file.

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This guide assumes that you are working with a router configuration file

4-1

Configuring WAN Line Services

Configuring DSU/CSU Services

You can configure DSU/CSU services using the BCC or Site Manager.

Note:

The default serial line configuration is usually appropriate. See Chapter 2

for information about changing the default synchronous line parameters.

Using the BCC

To configure DSU/CSU services, navigate to the box prompt and type:

dsucsu slot 1 connector 1

box#

dsucsu 1/1

box#

This command configures DSU/CSU services on slot 1 connector 1.

Note:

You can configure DSU/CSU services only on slot 1 connector 1 or

slot 1 connector 2.

Using Site Manager

To configure DSU/CSU services, complete the following tasks.

You do this System responds

1. In the Configuration Manager window, click on the COM conn ect or for the DSU/ CSU circuit.

2. Click on

3. Click on OK to accept the default configuration, or edit the parameters before clicking on OK to initialize the changes.

4-2

Edit DSU/CSU

Site Manager Procedure

The Edit Connector window opens.

. The Edit Adapter Module DSU CSU

Parameters window opens.

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Avaya WAN Lines, WAN Line User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual