Ascend Communications MAX 1800 Series User manual

MAX 1800 Series Network
Configuration Guide
Ascend Communications, Inc.
Part Number: 7820-0632-001
For software version 7.0.0
Preliminary November 2, 1998

Ascend Communications, Inc. is a trademark of Ascend Communications, Inc. Other
trademarks and trade names mentioned in this publication belong to their respective owners.
Copyright © November 1998, Ascend Communications, Inc. All Rights Reserved.
This document contains information that is the property of Ascend Communications, Inc. This
document may not be copied, reproduced, reduced to any electronic medium or machine
readable form, or otherwise duplicated, and the information herein may not be used,
disseminated or otherwise disclosed, except with the prior written consent of Ascend
Communications, Inc.

MAX 1800 Series Network Configuration Guide Preliminary November 2, 1998 iii
Ascend Customer Service
Ascend Customer Service provides a variety of options for obtaining technical assistance,
information about Ascend products and services, and software upgrades.
Obtaining technical assistance
You can obtain technical assistance by telephone, email, fax, or modem, or over the Internet.
Enabling Ascend to assist you
If you need to contact Ascend for help with a problem, make sure that you have the following
information when you call or that you include it in your correspondence:
• Product name and model.
• Software and hardware options.
• Software version.
• If supplied by your carrier, Service Profile Identifiers (SPIDs) associated with your
product.
• Your local telephone company’s switch type and operating mode, such as AT&T 5ESS
Custom or Northern Telecom National ISDN-1.
• Whether you are routing or bridging with your Ascend product.
• Type of computer you are using.
• Description of the problem.
Calling Ascend from within the United States
In the U.S., you can take advantage of Priority Technical Assistance or an Ascend Advantage
Pak service contract, or you can call to request assistance.
Priority Technical Assistance
If you need to talk to an engineer right away, call (900) 555-ASND (2763) to reach Ascend’s
Priority Call queue. The charge of $2.95 per minute does not begin to accrue until you are
connected to an engineer. Average wait times are less than three minutes.
Ascend Advantage Pak
Ascend Advantage Pak is a one-year service contract that includes overnight advance
replacement of failed products, technical support, software maintenance releases, and software
update releases. For more information, call (800) ASCEND-4 (272-3634), or access Ascend’s
Web site at www.ascend.com and select Services and Support, then Advantage Service
Family.
Other telephone numbers
For a menu of Ascend’s services, call (800) ASCEND-4 (272-3634). Or call [phone]
for an operator.

iv Preliminary November 2, 1998 MAX 1800 Series Network Configuration Guide
Calling Ascend from outside the United States
You can contact Ascend by telephone from outside the United States at one of the following
numbers:
Obtaining assistance through correspondence
Ascend maintains two email addresses for technical support questions. One is for customers in
the United States, and the other is for customers in Europe, the Middle East, and Asia. If you
prefer to correspond by fax, BBS, or regular mail, please direct your inquiry to Ascend’s U.S.
offices. Following are the ways in which you can reach Ascend Customer Service:
• Email from within the U.S.—[email protected]
• Email from Europe or the Middle East—[email protected]
• Email from Asia Pacific—[email protected]
• Fax—[phone]
• Customer Support BBS (by modem)—[phone]
• Write to Ascend at the following address:
Attn: Customer Service
Ascend Communications, Inc.
One Ascend Plaza
1701 Harbor Bay Parkway
Alameda, CA 94502-3002
Finding information and software on the Internet
Visit Ascend’s Web site at http://www.ascend.com for technical information, product
information, and descriptions of available services.
Telephone outside the United States [phone]
Asia Pacific (except Japan) ([phone]
Austria/Germany/Switzerland ([phone]
Benelux ([phone]
France ([phone]
Italy ([phone]
Japan ([phone]
Middle East/Africa ([phone]
Scandinavia ([phone]
Spain/Portugal ([phone]
UK ([phone]
For the Asia Pacific Region, you can find additional support resources at
http://apac.ascend.com/contacts.html.

MAX 1800 Series Network Configuration Guide Preliminary November 2, 1998 v
Visit Ascend’s FTP site at ftp.ascend.com for software upgrades, release notes, and
addenda to this manual.

MAX 1800 Series Network Configuration Guide Preliminary November 3, 1998 vii
Contents
Ascend Customer Service........................................................................................................ iii
About This Guide ......................................................................... xxix
How to use this guide............................................................................................................ xxix
What you should know ......................................................................................................... xxix
Documentation conventions................................................................................................... xxx
MAX 1800 Series documentation set ................................................................................... xxxi
Related publications.............................................................................................................. xxxi
Chapter 1 Getting Acquainted with the MAX ................................................ 1-1
Using the MAX as an ISP or telecommuting hub.................................................................. 1-1
Using the MAX as an ISP hub........................................................................................ 1-1
Using the MAX as a telecommuting hub........................................................................ 1-2
Overview of MAX configuration........................................................................................... 1-3
Creating a network diagram............................................................................................ 1-3
Configuring lines, slots, and ports for WAN access....................................................... 1-4
Configuring WAN connections and security.................................................................. 1-4
Concentrating Frame Relay connections........................................................................ 1-5
Enabling X.25 terminal connections............................................................................... 1-5
Configuring routing and bridging across the WAN........................................................ 1-5
Enabling protocol-independent packet bridging...................................................... 1-5
Using IPX routing (NetWare 3.11 or newer) .......................................................... 1-5
IP routing................................................................................................................. 1-6
Configuring Internet services.......................................................................................... 1-6
Multicast.................................................................................................................. 1-6
OSPF routing........................................................................................................... 1-6
Virtual private networks.......................................................................................... 1-6
Management features.............................................................................................................1-7
Using the terminal-server command line........................................................................ 1-7
Using status windows to track WAN or Ethernet activity.............................................. 1-7
Managing the MAX using SNMP .................................................................................. 1-7
Using remote management to configure far-end Ascend units....................................... 1-7
Flash RAM and software updates................................................................................... 1-8
Call Detail Reporting (CDR).......................................................................................... 1-8
MAX profiles......................................................................................................................... 1-8
Obtaining privileges to use the menus.......................................................................... 1-10
Activating a profile....................................................................................................... 1-11
Where to go next.................................................................................................................. 1-12
Chapter 2 Configuring the MAX for WAN Access ........................................ 2-1
Introduction to WAN configuration....................................................................................... 2-1

viii Preliminary November 3, 1998 MAX 1800 Series Network Configuration Guide
Contents
Menus and profiles.......................................................................................................... 2-1
How the VT100 menus relate to slots and ports............................................................. 2-2
System slot...................................................................................................................... 2-2
Expansion slots ............................................................................................................... 2-2
Ethernet and WAN slots................................................................................................. 2-2
Phone number assignments............................................................................................. 2-2
Add-on numbers ...................................................................................................... 2-3
Hunt groups ............................................................................................................. 2-3
SPIDS (for Net BRI lines)....................................................................................... 2-4
How the MAX routes inbound and outbound calls ........................................................ 2-4
Configuring ISDN BRI network lines ................................................................................... 2-5
Understanding the Net BRI parameters.......................................................................... 2-5
Name........................................................................................................................ 2-5
Switch Type............................................................................................................. 2-5
BRI Analog Encode................................................................................................. 2-6
Link Type ................................................................................................................ 2-6
Using the BRI line for switched or nailed connections........................................... 2-6
Associating the channel with a slot/port in the MAX ............................................. 2-6
Assigning the channel to a trunk group................................................................... 2-6
Phone number and Service Profile Identifier (SPID) assignments.......................... 2-6
Examples of Net BRI configuration ............................................................................... 2-7
Configuring incoming switched connections .......................................................... 2-7
Configuring the Net BRI line for outbound calls .................................................... 2-7
Displaying information about BRI calls.................................................................. 2-9
Configuring the serial WAN port........................................................................................... 2-9
Understanding the serial WAN parameters.................................................................... 2-9
Nailed Grp ............................................................................................................... 2-9
Activation .............................................................................................................. 2-10
Example serial WAN configuration ............................................................................. 2-10
Configuring digital modems ................................................................................................ 2-10
56k Modem Numbering................................................................................................ 2-11
8-MOD modem numbering ................................................................................... 2-11
Understanding the digital modem parameters .............................................................. 2-12
Sample configuration.................................................................................................... 2-12
Quiescing digital modems and returning them to service............................................. 2-12
Configuring V.110 modems................................................................................................. 2-13
Understanding the V.110 modem parameters............................................................... 2-13
Example of V.110 configuration .................................................................................. 2-13
Configuring Host/6 (Host/Dual) AIM ports......................................................................... 2-14
Configuring the AIM port............................................................................................. 2-14
Dial Plan ................................................................................................................ 2-15
Ans N#................................................................................................................... 2-15
Idle......................................................................................................................... 2-15
Dial ........................................................................................................................ 2-15
Answer................................................................................................................... 2-15
Clear....................................................................................................................... 2-16
Port Password ........................................................................................................ 2-16
Term Timing.......................................................................................................... 2-16
Esc ......................................................................................................................... 2-16
Early CD................................................................................................................ 2-16
DS0 Min Rst.......................................................................................................... 2-16
Sample Port profile configuration ......................................................................... 2-16

Contents
MAX 1800 Series Network Configuration Guide Preliminary November 3, 1998 ix
Port diagnostics...................................................................................................... 2-17
Configuring the Host interface ..................................................................................... 2-17
Pairing ports for dual-port calls............................................................................. 2-18
Restricting access to the AIM port from the palmtop controller........................... 2-18
Enabling dual-port calls......................................................................................... 2-18
Configuring WAN connections between serial hosts................................................... 2-18
Dial# ...................................................................................................................... 2-19
Connection type and bandwidth management....................................................... 2-19
Bandwidth issues................................................................................................... 2-20
Action upon failure to establish base channels of a connection............................ 2-20
Telco options ......................................................................................................... 2-20
B & O Restore and Flag Idle ................................................................................. 2-20
Dynamic bandwidth allocation issues ................................................................... 2-20
Call Password ........................................................................................................ 2-21
Example of AIM call configuration....................................................................... 2-21
Example FT1-B&O call configuration.................................................................. 2-22
Configuring a single-channel call.......................................................................... 2-23
Configuring a two-channel dual-port call.............................................................. 2-23
Configuring call routing....................................................................................................... 2-24
Routing inbound calls................................................................................................... 2-24
Specifying answer numbers for destination host ports.......................................... 2-25
Specifying host ports’ slot and port numbers in WAN channel configurations.... 2-25
Exclusive port routing ........................................................................................... 2-25
Setting up ISDN subaddressing.................................................................................... 2-25
Specifying answer numbers for destination host ports................................................. 2-25
Slot and port specifications........................................................................................... 2-26
Exclusive port routing................................................................................................... 2-27
Limiting incoming calls using DNIS-related methods ................................................. 2-27
Incoming call routing state diagram ............................................................................. 2-30
Routing outbound calls................................................................................................. 2-33
Enabling trunk groups ........................................................................................... 2-33
Dialing through trunk group 2 (local port-to-port calls)........................................ 2-34
Dialing through trunk group 3 (Destination profiles)............................................ 2-34
Dialing through trunk groups 4–9 ......................................................................... 2-35
Dialing through the extended dial plan.................................................................. 2-35
Matching slot and port specifications (reserved channels).................................... 2-36
Chapter 3 Configuring WAN Links ................................................................. 3-1
Introduction to WAN links .................................................................................................... 3-1
The Answer profile......................................................................................................... 3-2
Understanding the Answer profile parameters ............................................................... 3-4
Use Answer as Default............................................................................................ 3-4
Force 56................................................................................................................... 3-4
Profile Reqd............................................................................................................. 3-4
ID-Auth.................................................................................................................... 3-4
Encaps subprofile .................................................................................................... 3-4
IP options................................................................................................................. 3-4
Encapsulation-specific options................................................................................ 3-5
X.75 options............................................................................................................. 3-5
Session options ........................................................................................................ 3-5
DHCP options.......................................................................................................... 3-5
Example of Answer profile configuration ...................................................................... 3-5

xPreliminary November 3, 1998 MAX 1800 Series Network Configuration Guide
Contents
Connection profiles......................................................................................................... 3-6
Understanding Connection profile parameters............................................................... 3-8
Station...................................................................................................................... 3-8
Dial # ....................................................................................................................... 3-8
Calling # .................................................................................................................. 3-8
Called #.................................................................................................................... 3-9
Encaps and Encaps Options..................................................................................... 3-9
Route IP, Route IPX, Route AppleTalk .................................................................. 3-9
Bridge ...................................................................................................................... 3-9
Connection profile Session options ................................................................................ 3-9
Data Filter, Call Filter............................................................................................ 3-10
Idle, TS Idle Mode, TS Idle................................................................................... 3-10
Max Call Duration................................................................................................. 3-10
Preempt.................................................................................................................. 3-10
Backup................................................................................................................... 3-10
IP Direct................................................................................................................. 3-10
Frame Relay parameters........................................................................................ 3-10
Block Calls After................................................................................................... 3-11
Connection profile telco options................................................................................... 3-11
AnsOrig and FTI Caller....................................................................................... 3-11
Callback................................................................................................................. 3-11
Callback Delay ...................................................................................................... 3-11
Call Type ............................................................................................................... 3-12
Data Svc................................................................................................................. 3-12
Bill # ...................................................................................................................... 3-12
Transit #................................................................................................................. 3-12
Dialout OK ............................................................................................................ 3-13
Connection profile accounting options......................................................................... 3-13
Acct Type .............................................................................................................. 3-13
Acct Host and Acct Port........................................................................................ 3-13
Acct Timeout and Acct Key.................................................................................. 3-13
Acct-ID Base ......................................................................................................... 3-13
Connection profile DHCP options................................................................................ 3-13
Reply Enabled........................................................................................................ 3-14
Pool Number.......................................................................................................... 3-14
Max Leases............................................................................................................ 3-14
Names/Passwords profiles............................................................................................ 3-14
Understanding the Names/Passwords profile parameters............................................. 3-14
Name...................................................................................................................... 3-15
Active..................................................................................................................... 3-15
Rec PW.................................................................................................................. 3-15
Template Connection............................................................................................. 3-15
Example Names/Passwords profile configuration........................................................ 3-15
Configuring PPP connections .............................................................................................. 3-16
Configuring single-channel PPP connections...................................................................... 3-16
Understanding the PPP parameters............................................................................... 3-17
Routing and bridging parameters .......................................................................... 3-17
Revc Auth and Send Auth..................................................................................... 3-17
Send PW and Recv PW ......................................................................................... 3-17
Send Name............................................................................................................. 3-18
Maximum receive units (MRU) ............................................................................ 3-18
Link quality monitoring (LQM)............................................................................ 3-18

Contents
MAX 1800 Series Network Configuration Guide Preliminary November 3, 1998 xi
Link Comp and VJ Comp...................................................................................... 3-18
CBCP Enable......................................................................................................... 3-19
CBCP Mode........................................................................................................... 3-19
CBCP Trunk Group............................................................................................... 3-19
BACP..................................................................................................................... 3-19
Dyn Alg ................................................................................................................. 3-19
Sec History ............................................................................................................ 3-20
Add Pers ................................................................................................................ 3-20
Sub Pers................................................................................................................. 3-20
Split Code.User...................................................................................................... 3-20
Example of a PPP connection....................................................................................... 3-20
Enabling PPP dial-out for V.110 modems............................................................. 3-21
Configuring MP and BACP connections............................................................................. 3-22
Understanding the MP and BACP parameters ............................................................. 3-23
MP without BACP................................................................................................. 3-23
Enabling BACP for MP connections..................................................................... 3-23
Specifying channel counts..................................................................................... 3-23
Dynamic algorithm for calculating bandwidth requirements................................ 3-24
Time period for calculating average line utilization.............................................. 3-24
Target utilization.................................................................................................... 3-24
Adding or dropping links (Add Pers).................................................................... 3-24
Guidelines for configuring bandwidth criteria ...................................................... 3-25
Example of MP connection without BACP.................................................................. 3-25
Example MP connection with BACP ........................................................................... 3-26
Configuring Ascend MP+ connections......................................................................... 3-27
Understanding the MP+ parameters ............................................................................. 3-28
Channel counts and bandwidth allocation parameters .......................................... 3-28
Auxiliary password for added channels................................................................. 3-28
Bandwidth monitoring........................................................................................... 3-28
Idle percent ............................................................................................................ 3-28
Example of MP+ configuration .................................................................................... 3-28
Configuring a nailed MP+ connection................................................................................. 3-29
Configuring multichannel calls across a stack of units........................................................ 3-30
How MP/MP+ call spanning works.............................................................................. 3-31
Bundle ownership.................................................................................................. 3-31
Connection profiles within a stack ........................................................................ 3-33
Phone numbers for new MP+ and MP-with-BACP channels ............................... 3-33
Performance considerations for MAX stacking............................................................ 3-33
Suggested LAN configurations ............................................................................. 3-34
Suggested hunt group configurations.................................................................... 3-34
Understanding the stack parameters............................................................................. 3-36
Stacking Enabled................................................................................................... 3-36
Stack Name............................................................................................................ 3-36
UDP Port................................................................................................................ 3-36
Configuring a MAX stack............................................................................................. 3-37
Disabling a MAX stack................................................................................................. 3-37
Adding and removing a MAX...................................................................................... 3-38
Configuring a Combinet connection.................................................................................... 3-38
Understanding Combinet bridging parameters............................................................. 3-39
Specifying the hardware address of the remote Combinet bridge......................... 3-39
Enabling bridging .................................................................................................. 3-39
Requiring a password from the remote bridge ...................................................... 3-39

xii Preliminary November 3, 1998 MAX 1800 Series Network Configuration Guide
Contents
Specifying passwords to exchange with the remote bridge................................... 3-39
Configuring line-integrity monitoring................................................................... 3-39
Base channel count................................................................................................ 3-39
Compression.......................................................................................................... 3-39
Example of Combinet configuration............................................................................. 3-39
Configuring EU connections................................................................................................ 3-40
Understanding the EU parameters................................................................................ 3-41
EU-RAW and EU-UI............................................................................................. 3-41
Maximum Receive Units (MRU) .......................................................................... 3-41
Data communications equipment address (DCE Addr) ........................................ 3-41
Data terminal equipment address (DTE Addr)...................................................... 3-41
Example of an EU configuration.................................................................................. 3-41
Example of a EU-UI connection................................................................................... 3-42
Configuring an ARA connection ......................................................................................... 3-43
Understanding the ARA parameters............................................................................. 3-44
AppleTalk and Zone Name.................................................................................... 3-44
Profile Reqd........................................................................................................... 3-44
Password................................................................................................................ 3-44
Max. Time ............................................................................................................. 3-44
Example of ARA configuration that enables IP access................................................ 3-44
Configuring dial-in PPP for AppleTalk ............................................................................... 3-46
Configuring an AppleTalk PPP connection with a Connection profile........................ 3-46
Configuring an AppleTalk PPP connection with a Names/Passwords profile............. 3-48
Configuring AppleTalk connections from RADIUS........................................................... 3-49
Configuring terminal-server connections............................................................................. 3-49
Connection authentication issues.................................................................................. 3-50
Analog modems and async PPP connections ........................................................ 3-50
V.120 terminal adapters and PPP connections...................................................... 3-50
V.120 terminal adapters with PPP turned off........................................................ 3-50
Modem connections...................................................................................................... 3-50
V.120 terminal adapter connections ............................................................................. 3-51
TCP-clear connections.................................................................................................. 3-52
Username login...................................................................................................... 3-52
TCP-modem connections (DNIS Login)............................................................... 3-53
The terminal-server interface........................................................................................ 3-54
Terminal mode....................................................................................................... 3-54
Menu mode............................................................................................................ 3-54
Immediate mode .................................................................................................... 3-55
Enabling terminal-server calls and setting security............................................... 3-55
Understanding modem parameters ............................................................................... 3-55
V42/MNP............................................................................................................... 3-55
Max Baud .............................................................................................................. 3-56
MDM Trn Level .................................................................................................... 3-56
MDM Modulation.................................................................................................. 3-56
Cell FIrst and Cell Level ....................................................................................... 3-56
7-Even.................................................................................................................... 3-56
Packet Wait and Packet Characters....................................................................... 3-56
Example of modem configuration ................................................................................ 3-57
Configuring terminal mode........................................................................................... 3-57
Understanding the terminal-mode parameters....................................................... 3-57
Example of terminal-mode configuration.............................................................. 3-59
Configuring immediate mode....................................................................................... 3-60

Contents
MAX 1800 Series Network Configuration Guide Preliminary November 3, 1998 xiii
Understanding the immediate-mode parameters ................................................... 3-60
Immed Host and Immed Port................................................................................. 3-60
Configuring menu mode ...................................................................................................... 3-61
Understanding the menu-mode parameters........................................................... 3-61
Example of menu-mode configuration......................................................................... 3-61
Configuring PPP mode ................................................................................................. 3-62
Understanding the PPP mode parameters.............................................................. 3-62
Example of PPP configuration .............................................................................. 3-63
Configuring Serial Line IP (SLIP) mode...................................................................... 3-63
Understanding the SLIP mode parameters............................................................ 3-63
Example of SLIP configuration............................................................................. 3-64
Configuring dial-out options......................................................................................... 3-65
Understanding the Dialout parameters .................................................................. 3-65
Example of dial-out configuration......................................................................... 3-66
Chapter 4 Configuring Frame Relay .............................................................. 4-1
Introduction............................................................................................................................ 4-1
Frame Relay link management ....................................................................................... 4-2
Using the MAX as a Frame Relay concentrator............................................................. 4-2
Using the MAX as a Frame Relay switch....................................................................... 4-3
Components of a Frame Relay configuration................................................................. 4-3
Configuring nailed bandwidth for Frame Relay.................................................................... 4-4
Defining Frame Relay link operations................................................................................... 4-4
Settings in a Frame-Relay profile ................................................................................... 4-4
Understanding the Frame Relay parameters................................................................... 4-5
Name and Active ..................................................................................................... 4-5
LinkUp..................................................................................................................... 4-5
FR Type................................................................................................................... 4-5
Call Type, telco options, and Data Svc ................................................................... 4-5
Link management protocol...................................................................................... 4-6
Frame Relay timers and event counts...................................................................... 4-6
MRU (Maximum Receive Units)............................................................................ 4-6
Settings in a RADIUS frdlink profile...................................................................... 4-6
Examples of a UNI-DTE link interface.......................................................................... 4-8
Examples of a UNI-DCE link interface.......................................................................... 4-9
Examples of an NNI link interface............................................................................... 4-11
Configuring a DLCI logical interface.................................................................................. 4-12
Overview of DLCI interface settings............................................................................ 4-12
Settings in a Connection profile ............................................................................ 4-12
Understanding the Frame Relay connection parameters....................................... 4-13
Settings in a RADIUS profile................................................................................ 4-14
Examples of a DLCI interface configuration................................................................ 4-15
Examples of backup interfaces for nailed Frame Relay links ...................................... 4-15
Concentrating incoming calls onto Frame Relay................................................................. 4-18
Setting up a Frame Relay gateway ............................................................................... 4-18
Routing parameters in the DLCI profile................................................................ 4-18
Routing parameters in RADIUS............................................................................ 4-19
Examples of a gateway configuration ................................................................... 4-19
Configuring Frame Relay Direct .................................................................................. 4-20
Settings in a Connection profile ............................................................................ 4-20
Settings in a RADIUS profile................................................................................ 4-21
Examples of FR-Direct connections...................................................................... 4-22

xiv Preliminary November 3, 1998 MAX 1800 Series Network Configuration Guide
Contents
Configuring the MAX as a Frame Relay switch.................................................................. 4-24
Overview of circuit-switching options ......................................................................... 4-24
Settings in a Connection profile ............................................................................ 4-24
Settings in a RADIUS profile................................................................................ 4-25
Examples of a circuit between UNI interfaces ............................................................. 4-25
Using local profiles................................................................................................ 4-25
Using RADIUS profiles......................................................................................... 4-26
Examples of a circuit between NNI interfaces ............................................................. 4-27
Using local profiles................................................................................................ 4-27
Using RADIUS profiles......................................................................................... 4-28
Examples of circuits that use UNI and NNI interfaces................................................. 4-29
Using local profiles................................................................................................ 4-29
Using RADIUS profiles......................................................................................... 4-31
Configuring switched Frame Relay connections................................................................. 4-32
Overview....................................................................................................................... 4-32
Configuring a switched Frame Relay connection......................................................... 4-33
Configuring a Frame Relay profile........................................................................ 4-33
Configuring a Connection profile.......................................................................... 4-33
Configuring the Answer profile............................................................................. 4-34
Establishing the connection................................................................................... 4-34
Chapter 5 AppleTalk Routing ......................................................................... 5-1
Introduction to AppleTalk routing......................................................................................... 5-1
When to use AppleTalk routing...................................................................................... 5-1
Reducing broadcast and multicast traffic ................................................................ 5-1
Providing dynamic startup information to local devices......................................... 5-2
Understanding AppleTalk zones and network ranges .................................................... 5-2
AppleTalk zones...................................................................................................... 5-2
Extended and nonextended AppleTalk networks.................................................... 5-2
Understanding how AppleTalk works ................................................................................... 5-4
Configuring AppleTalk routing ............................................................................................. 5-5
System-level AppleTalk routing parameters .................................................................. 5-5
Answer profile parameter ............................................................................................... 5-6
Per-connection AppleTalk routing parameters............................................................... 5-6
Configuring an AppleTalk connection with RADIUS ................................................... 5-7
Reading more about AppleTalk............................................................................................. 5-7
Chapter 6 Configuring X.25 ............................................................................ 6-1
Introduction to Ascend X.25 implementation........................................................................ 6-1
Configuring the logical link to an X.25 network ................................................................... 6-2
Understanding the X.25 parameters................................................................................ 6-3
Profile name and activation..................................................................................... 6-3
Type of connection.................................................................................................. 6-3
LAPB and reliable data transfer .............................................................................. 6-3
X.25 packet handling............................................................................................... 6-3
X.25 PVC and SVC numbers .................................................................................. 6-4
X.25 diagnostic fields in packet types..................................................................... 6-4
X.25 options............................................................................................................ 6-4
X.25 reverse charge accept...................................................................................... 6-4
X.25 network type ................................................................................................... 6-4
Timer and limit for Restart-Requests ...................................................................... 6-4

Contents
MAX 1800 Series Network Configuration Guide Preliminary November 3, 1998 xv
Timer for Call-Requests .......................................................................................... 6-5
Timer and limit for Reset-Requests......................................................................... 6-5
Timer and limit for Clear-Requests......................................................................... 6-5
X.121 source address............................................................................................... 6-5
Virtual Call Establishment (VCE) timer value........................................................ 6-5
Example of an X.25 profile configuration...................................................................... 6-5
Configuring X.25 IP connections........................................................................................... 6-7
Understanding the X.25 IP connection parameters ........................................................ 6-8
X.25 Prof ................................................................................................................. 6-8
LCN ......................................................................................................................... 6-8
Encap Type.............................................................................................................. 6-8
Reverse Charge........................................................................................................ 6-8
RPOA....................................................................................................................... 6-8
CUG Index............................................................................................................... 6-8
NUI.......................................................................................................................... 6-9
Max Unsucc. calls.................................................................................................... 6-9
Inactivity Timer....................................................................................................... 6-9
MRU........................................................................................................................ 6-9
Call Mode ................................................................................................................ 6-9
Answer X.121 Address............................................................................................ 6-9
Remote X.121 address............................................................................................. 6-9
IP configuration parameters................................................................................... 6-10
Example of an X.25 IP configuration........................................................................... 6-10
Configuring X.25 PAD connections.................................................................................... 6-11
Understanding the X.25 PAD connection parameters.................................................. 6-12
Auto-Call X.121 Addr........................................................................................... 6-12
CUG Index............................................................................................................. 6-12
NUI........................................................................................................................ 6-12
NUI prompt............................................................................................................ 6-13
NUI PW prompt..................................................................................................... 6-13
PAD banner msg.................................................................................................... 6-13
PAD prompt........................................................................................................... 6-13
Recv PW................................................................................................................ 6-13
Reverse Charge...................................................................................................... 6-13
RPOA..................................................................................................................... 6-13
VC Timer Enable................................................................................................... 6-14
X.25 Prof ............................................................................................................... 6-14
X.3 Param Prof ...................................................................................................... 6-14
Example of X.25 PAD.................................................................................................. 6-14
Setting up X.25 PAD sessions ............................................................................................. 6-15
X.3 parameters and profiles.......................................................................................... 6-15
X.25 PAD commands ................................................................................................... 6-19
Commands for working with X.3 parameters and profiles ................................... 6-19
X.25 PAD commands for managing calls............................................................. 6-20
PAD service signals...................................................................................................... 6-22
X.25 clear cause codes.................................................................................................. 6-24
X.25 diagnostic field values.......................................................................................... 6-25
Customizing script support for X.25 PAD........................................................................... 6-27
Parameters and commands............................................................................................ 6-27
Banner.................................................................................................................... 6-27
NUI prompt............................................................................................................ 6-27
NUI PW prompt..................................................................................................... 6-27

xvi Preliminary November 3, 1998 MAX 1800 Series Network Configuration Guide
Contents
PAD Alias #n (n=1-3)............................................................................................ 6-28
PAD prompt........................................................................................................... 6-28
Terminal server command..................................................................................... 6-28
X.25 PAD command.............................................................................................. 6-28
Accessing the PAD using the PAD script support feature............................................ 6-29
Setting up ISDN D-channel X.25 support ........................................................................... 6-30
Configuring ISDN D-channel X.25 support................................................................. 6-30
Customized X.25 T3POS support................................................................................. 6-30
Protocol summary.................................................................................................. 6-31
Configuring a T3POS connection.......................................................................... 6-34
Accessing the T3POS............................................................................................ 6-34
Always On/Dynamic ISDN (AO/DI)................................................................................... 6-36
Introduction................................................................................................................... 6-36
How it works................................................................................................................. 6-36
Configuring an AO/DI connection ............................................................................... 6-37
Configuring the X.25 profile ................................................................................. 6-37
Configuring the Answer profile............................................................................. 6-37
Configuring a Connection profile to support AO/DI............................................. 6-38
Displaying AO/DI operation......................................................................................... 6-41
Displaying whether or not the MAX supports AO/DI .......................................... 6-41
Displaying active AO/DI calls............................................................................... 6-41
Displaying packet processing for a specific session.............................................. 6-42
Chapter 7 Defining Static Filters .................................................................... 7-1
Introduction to Ascend filters ................................................................................................ 7-1
Packet filters and firewalls.............................................................................................. 7-1
Generic filters .......................................................................................................... 7-1
IP filters ................................................................................................................... 7-2
IPX filters ................................................................................................................ 7-2
Dynamic firewalls.................................................................................................... 7-2
Ways to apply packet filters to an interface.................................................................... 7-2
Data filters for dropping or forwarding certain packets .......................................... 7-2
Call filters for managing connections...................................................................... 7-3
How packet filters work.................................................................................................. 7-3
Generic filters .......................................................................................................... 7-4
IP filters ................................................................................................................... 7-4
IPX filters ................................................................................................................ 7-4
Defining packet filters............................................................................................................ 7-5
Name of the Filter profile ............................................................................................... 7-6
Input and output filters.................................................................................................... 7-6
Type of filter................................................................................................................... 7-6
Generic filter parameters ................................................................................................ 7-7
Forward.................................................................................................................... 7-7
Offset ....................................................................................................................... 7-7
Length...................................................................................................................... 7-7
Value........................................................................................................................ 7-9
Compare................................................................................................................... 7-9
More......................................................................................................................... 7-9
IP filter parameters.......................................................................................................... 7-9
Forward.................................................................................................................... 7-9
Src Mask.................................................................................................................. 7-9
Src Adrs................................................................................................................. 7-10

Contents
MAX 1800 Series Network Configuration Guide Preliminary November 3, 1998 xvii
Dst Mask................................................................................................................ 7-10
Dst Adrs................................................................................................................. 7-10
Protocol.................................................................................................................. 7-10
Src Port # ............................................................................................................... 7-11
Dst Port #............................................................................................................... 7-11
TCP Estab.............................................................................................................. 7-11
Example filter specifications ........................................................................................ 7-11
Defining a filter to drop AppleTalk broadcasts..................................................... 7-11
Defining a filter to prevent IP-address spoofing ................................................... 7-14
Defining a filter for more complex IP security issues........................................... 7-16
Applying packet filters.........................................................................................................7-18
How filters are applied.................................................................................................. 7-19
Applying filters in the Answer profile................................................................... 7-19
Specifying a data filter........................................................................................... 7-19
Specifying a call filter............................................................................................ 7-19
Filter persistence.................................................................................................... 7-19
Applying a data filter on Ethernet ......................................................................... 7-19
Examples of configurations that apply filters............................................................... 7-20
Applying a data filter in a Connection profile....................................................... 7-20
Applying a call filter for resetting the idle timer................................................... 7-20
Applying a data filter to the Ethernet interface ..................................................... 7-21
Configuring predefined filters.............................................................................................. 7-21
IP Call filter ..................................................................................................................7-21
NetWare Call filter........................................................................................................ 7-22
AppleTalk Call filter..................................................................................................... 7-23
Chapter 8 Configuring Packet Bridging ........................................................ 8-1
Introduction to Ascend bridging ............................................................................................ 8-1
Disadvantages of bridging .............................................................................................. 8-1
How the MAX initiates a bridged WAN connection...................................................... 8-2
Physical addresses and the bridge table................................................................... 8-2
Broadcast addresses................................................................................................. 8-2
Establishing a bridged connection ......................................................................................... 8-3
Enabling bridging................................................................................................................... 8-3
Managing the bridge table...................................................................................................... 8-4
Transparent bridging....................................................................................................... 8-4
Configuring bridged connections........................................................................................... 8-5
Understanding the bridging parameters.......................................................................... 8-5
Bridging in the Answer profile................................................................................ 8-5
Station name and password ..................................................................................... 8-5
Bridging and dial broadcast in a Connection profile............................................... 8-6
Names and passwords.............................................................................................. 8-6
Bridge Adrs parameters........................................................................................... 8-6
Example of a bridged connection ................................................................................... 8-6
IPX bridged configurations............................................................................................. 8-9
Understanding the IPX bridging parameters ........................................................... 8-9
Netware T/O (watchdog spoofing)........................................................................ 8-10
Example of an IPX client bridge (local clients) .................................................... 8-10
Example of an IPX server bridge (local servers)................................................... 8-11
Configuring proxy mode on the MAX ......................................................................... 8-12

xviii Preliminary November 3, 1998 MAX 1800 Series Network Configuration Guide
Contents
Chapter 9 Configuring IPX Routing ............................................................... 9-1
Introduction to IPX routing.................................................................................................... 9-1
IPX Service Advertising Protocol (SAP) tables............................................................. 9-2
IPX Routing Information Protocol (RIP) tables ............................................................. 9-2
IPX and PPP link compression....................................................................................... 9-3
Ascend extensions to standard IPX ................................................................................ 9-3
IPX Route profiles................................................................................................... 9-3
IPX SAP filters........................................................................................................ 9-4
WAN considerations for NetWare client software......................................................... 9-4
Enabling IPX routing in the MAX......................................................................................... 9-5
Understanding the global IPX parameters...................................................................... 9-5
IPX Routing............................................................................................................. 9-5
IPX Frame................................................................................................................ 9-5
IPX Enet # ............................................................................................................... 9-5
IPX Pool # ............................................................................................................... 9-5
Examples of IPX routing configuration.......................................................................... 9-6
A basic configuration using default values.............................................................. 9-6
A more complex example........................................................................................ 9-6
Verifying the router configuration........................................................................... 9-7
Configuring IPX routing connections.................................................................................... 9-7
Understanding the IPX connection parameters .............................................................. 9-8
Enabling IPX routing in the Answer profile............................................................ 9-8
Authentication method used for passwords received from the far end ................... 9-8
IPX SAP filters........................................................................................................ 9-8
Station name and Recv PW in a Connection profile ............................................... 9-8
Peer dialin for routing to NetWare clients............................................................... 9-8
Controlling RIP and SAP transmissions across the WAN connection.................... 9-9
Dial Query for bringing up a connection based on service queries......................... 9-9
IPX network and alias.............................................................................................. 9-9
Handle IPX client or server bridging....................................................................... 9-9
Netware T/O watchdog spoofing............................................................................. 9-9
SAP HS Proxy (NetWare SAP Home Server Proxy)............................................ 9-10
Examples of IPX routing connections .......................................................................... 9-10
Configuring a dial-in client connection................................................................. 9-11
Configuring a connection between two LANs ...................................................... 9-12
Configuring a connection with local servers only................................................. 9-15
Configuring the NetWare SAP Home Server Proxy ............................................. 9-17
Configuring static IPX routes .............................................................................................. 9-17
Understanding the static route parameters.................................................................... 9-18
Examples of static-route configuration......................................................................... 9-19
Creating and applying IPX SAP filters................................................................................ 9-19
Understanding the IPX SAP filter parameters.............................................................. 9-20
Input SAP Filters and Output SAP Filters............................................................. 9-20
Valid ...................................................................................................................... 9-20
Type....................................................................................................................... 9-20
Server Type............................................................................................................ 9-20
Server Name .......................................................................................................... 9-21
Applying IPX SAP filters...................................................................................... 9-21
Example of IPX SAP filter configuration..................................................................... 9-21

Contents
MAX 1800 Series Network Configuration Guide Preliminary November 3, 1998 xix
Chapter 10 Configuring IP Routing ................................................................ 10-1
Introduction to IP routing and interfaces ............................................................................. 10-1
IP addresses and subnet masks ..................................................................................... 10-2
Zero subnets.................................................................................................................. 10-3
IP routes........................................................................................................................ 10-4
How the MAX uses the routing table.................................................................... 10-4
Static routes ........................................................................................................... 10-4
Dynamic routes...................................................................................................... 10-4
Route preferences and metrics............................................................................... 10-5
MAX IP interfaces........................................................................................................ 10-5
Ethernet interfaces................................................................................................. 10-5
WAN IP interfaces................................................................................................. 10-6
Numbered interfaces.............................................................................................. 10-6
Configuring the local IP network setup ............................................................................... 10-8
Understanding the IP network parameters.................................................................... 10-9
Primary IP address for each Ethernet interface ..................................................... 10-9
Second IP address for each Ethernet interface ...................................................... 10-9
Enabling RIP on the Ethernet interface............................................................... 10-10
Ignoring the default route.................................................................................... 10-10
Proxy ARP and inverse ARP............................................................................... 10-10
Specifying address pools ..................................................................................... 10-11
Forcing callers configured for a pool address to accept dynamic assignment .... 10-11
Summarizing host routes in routing table advertisements................................... 10-11
Sharing Connection profiles................................................................................ 10-12
Suppressing host route advertisements................................................................ 10-12
Telnet password................................................................................................... 10-12
BOOTP Relay...................................................................................................... 10-12
Local domain name ............................................................................................. 10-13
DNS or WINS name servers................................................................................ 10-13
DNS lists.............................................................................................................. 10-13
Client DNS .......................................................................................................... 10-13
SNTP service....................................................................................................... 10-13
Specifying SNTP server addresses...................................................................... 10-14
UDP checksums................................................................................................... 10-14
Examples of IP network configuration....................................................................... 10-14
Configuring the MAX IP interface on a subnet................................................... 10-14
Configuring DNS................................................................................................. 10-16
Additional terminal-server commands........................................................................ 10-17
Show commands.................................................................................................. 10-17
DNStab commands.............................................................................................. 10-17
Configuring the local DNS table......................................................................... 10-18
Criteria for valid names in the local DNS table................................................... 10-18
Entering IP addresses in the local DNS table...................................................... 10-18
Editing the local DNS table................................................................................. 10-19
Deleting an entry from the local DNS table ........................................................ 10-19
Setting up address pools with route summarization ................................................... 10-20
Configuring IP routing connections................................................................................... 10-22
Understanding the IP routing connection parameters................................................. 10-22
Assign Adrs ......................................................................................................... 10-22
Route IP............................................................................................................... 10-22
Enabling IP routing for a WAN interface............................................................ 10-23
Configuring the remote IP address...................................................................... 10-23

xx Preliminary November 3, 1998 MAX 1800 Series Network Configuration Guide
Contents
WAN Alias .......................................................................................................... 10-23
Specifying a local IP interface address................................................................ 10-23
Assigning metrics and preferences...................................................................... 10-23
Private routes....................................................................................................... 10-24
Assigning the IP address dynamically................................................................. 10-24
IP direct configuration......................................................................................... 10-24
Configuring RIP on this interface........................................................................ 10-24
Checking remote host requirements ........................................................................... 10-24
UNIX software .................................................................................................... 10-25
Window or OS/2 software................................................................................... 10-25
Macintosh software.............................................................................................. 10-25
Software configuration ........................................................................................ 10-25
Examples of IP routing connections........................................................................... 10-25
Configuring dynamic address assignment to a dial-in host................................. 10-25
Configuring a host connection with a static address ........................................... 10-27
Configuring an IP Direct connection................................................................... 10-28
Configuring a router-to-router connection .......................................................... 10-29
Configuring a router-to-router connection on a subnet....................................... 10-30
Configuring a numbered interface....................................................................... 10-32
Configuring IP routes and preferences............................................................................... 10-33
Understanding the static route parameters.................................................................. 10-34
2nd Adrs .............................................................................................................. 10-34
Active................................................................................................................... 10-34
ASE-tag ............................................................................................................... 10-34
Client Pri DNS..................................................................................................... 10-34
Dest...................................................................................................................... 10-34
DownMetric......................................................................................................... 10-35
DownPreference .................................................................................................. 10-35
Filter..................................................................................................................... 10-35
IF Adrs................................................................................................................. 10-35
Gateway............................................................................................................... 10-35
Ignore Def Rt....................................................................................................... 10-35
IP Adrs................................................................................................................. 10-35
IPX Frame............................................................................................................ 10-35
LAN Adrs ............................................................................................................ 10-36
LSA-ASE7........................................................................................................... 10-36
Metric................................................................................................................... 10-36
Multicast Client ................................................................................................... 10-36
Multicast GRP Leave Delay................................................................................ 10-36
Multicast Rate Limit............................................................................................ 10-36
Name.................................................................................................................... 10-37
NSSA-ASE7........................................................................................................ 10-37
OSPF ASE Preference......................................................................................... 10-37
OSPF-Cost........................................................................................................... 10-37
OSPF Preference.................................................................................................. 10-37
Pool...................................................................................................................... 10-37
Preference............................................................................................................ 10-37
Private.................................................................................................................. 10-38
Proxy Mode ......................................................................................................... 10-38
RIP2 Use Multicast.............................................................................................. 10-38
RIP....................................................................................................................... 10-38
RipAseType......................................................................................................... 10-39