Aztech SDSL Bridge & Router User manual

SDSL Bridge & Router
User's & Technical Manual
Version 1.2
Protocols Discussed:
RFC 2684 (RFC 1483) Ethernet Framing
RFC 2684 (RFC 1483) IP Framing
RFC 2225 (RFC 1577) IPoA
RFC 2516 PPPoE
RFC 2364 PPPoA
Transparent Bridge

©Copyright, Jul 2001. All Rights Reserved.
(P/N: 040-513436-121) (Ref: 330)
• Virata is a registered trademark of Virata Corporation.
• All other company or product names are trademarks or registered trademarks or
service marks of their respective owners and are hereby recognized as such.

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Safety Guidelines
Adhere to the following safety guidelines when using your unit to reduce the risk of
fire, electric shock and injury.
Understand all instructions in the manual. Follow all instruction labels found
on the unit.
Except for the power adapter supplied, the unit should not be connected to
other adapters/power supplies.
Never spill liquid of any kind on the unit.
Do not place the unit on an unstable stand or table. The unit may drop and
become damaged.
Do not expose the unit to direct sunlight.
Do not put any heat generating devices close to the unit as it may degrade or
cause damage to it.
Do not stack the unit on top of each other. / Do not put any heavy object on
top of the unit
Do not use liquid cleaners or aerosol cleaners. Use a soft, dry cloth for
cleaning.
Productwarrantydoesnotapplytodamagecausedbylightning,powersurgesor
wrongvoltageusage.

Contents
Safety Guidelines ......................................................................... iii
About This Manual ...................................................................... ix
1. Documentation ........................................................................ 1-1
1.1 Conventions Used ............................................................. 1-2
2. Basics of the SDSL Bridge/Router ........................................... 2-1
2.1 Introduction ...................................................................... 2-1
2.2 System Requirements ........................................................ 2-1
2.3 Network Connections ........................................................ 2-2
2.3.1 Bridge Modem...................................................... 2-2
2.3.2 Router ................................................................. 2-2
2.4 LED Indicators .................................................................. 2-3
2.5 Connection ....................................................................... 2-4
3. Setting Up Local Management ................................................ 3-1
3.1 Setting up the Serial Link ................................................... 3-1
3.2 Configuring the Serial Link ................................................. 3-2
4. Basic Commands on Running Local Management ................. 4-1
4.1 Guidelines ........................................................................ 4-1
4.2 Settings and Commands for the Modem .............................. 4-1
4.3 To Disconnect/Connect the SDSL Link ................................. 4-2
5. Configuring Your Router ......................................................... 5-1
5.1 Network Setup Overview .................................................... 5-1
5.2 Configuring the Basics ....................................................... 5-3
5.2.1 Configuring the Basics:
Step 1 - Resetting your Router's Configuration ........ 5-4
5.2.2 Configuring the Basics:
Step 2 - Configuring the LAN ................................ 5-6
5.2.3 Configuring the Basics:
Step 3 - Configuring the WAN ............................... 5-6

i) Configuring the WAN - For RFC 2684
(RFC 1483) Ethernet Framing .................. 5-6
ii) Configuring the WAN - For RFC 2684
(RFC 1483) IP Framing ........................... 5-7
iii) Configuring the WAN - For RFC 2225
(RFC 1577) IPoA .................................... 5-8
iv) Configuring the WAN - For RFC 2364
PPPoA .................................................... 5-8
v) Configuring the WAN - For RFC 2516
PPPoE .................................................... 5-10
5.2.4 Configuring the Basics:
Step 4 - Configuring the Routing Table ................... 5-11
5.2.5 Configuring the Basics:
Step 5 - Enabling IP Forwarding ............................ 5-11
5.2.6 Configuring the Basics: Step 6 - Enabling NAT ...... 5-12
5.2.7 Configuring the Basics:
Step 7 - Saving the Configurations ........................ 5-12
5.3 Setting Up NAT Inbound Port Forwarding
(Port Address Translation) .................................................. 5-13
5.4 Configuring DHCP Server ................................................... 5-15
5.4.1 Some useful commands for DHCP ......................... 5-15
5.4.2 DHCP Ser ver Illustration ....................................... 5-16
5.5 Configuring DNS Relay ...................................................... 5-17
5.5.1 To Enable DNS Relay
(with fixed IP address from your ISP) ..................... 5-17
5.5.2 To Check DNS Relay Server Status ........................ 5-17
5.5.3 To Disable DNS Relay ........................................... 5-17
5.6 Setting Up SNMP .............................................................. 5-18
5.6.1 Read/Write Access ............................................... 5-18
5.6.2 SNMP Trap .......................................................... 5-18
5.7 Setting up Telnet Access .................................................... 5-19
5.8 Configuring Autoloop for IP Interface ................................... 5-19
6. Configuring Your Transparent Bridge ..................................... 6-1
6.1 Network Setup Overview .................................................... 6-1

6.2 Configuring the Basics ....................................................... 6-1
6.2.1 Step 1: Resetting your Router's Configuration ......... 6-2
6.2.2 Step 2: Configuring the LAN ................................. 6-3
6.2.3 Step 3: Saving the Configurations.......................... 6-3
7. Router Configuration Examples .............................................. 7-1
7.1 Example on RFC 2684 (RFC 1483) IP Framing ................... 7-1
7.2 Example on RFC 2364 PPPoA ........................................... 7-2
8. Configuring PPTP (Point-to-Point Tunnelling Protocol) ...... 8-1
8.1 Running the Console Commands ........................................ 8-1
8.1.1 Step 1 - Configuring the LAN ................................ 8-1
8.1.2 Step 2 - Configuring PPP Client and PNS
(PPTP Network Server) ......................................... 8-1
8.1.3 Step 3 - Binding to Ethernet Interface ................... 8-2
8.2 Setting Up Dial-Up Networking .......................................... 8-2
8.3 Establishing Your Internet Connection ................................. 8-5
9. Configuring Your Ethernet Card ............................................. 9-1
10. Running DSLTEST.................................................................. 10-1

Appendix A - Commonly Used Commands ...................................... A-1
A.1 TCP/IP Commands ............................................................ A-1
A.1.1 autoloop ............................................................... A-1
A.1.2 config .................................................................. A-2
A.1.3 device ................................................................. A-3
A.1.4 ip device ............................................................. A-4
A.1.5 ipatm pvc ............................................................ A-5
A.1.6 relay ................................................................... A-6
A.1.7 rip accept ............................................................ A-6
A.1.8 rip send ............................................................... A-7
A.1.9 route ................................................................... A-8
A.1.10 snmp ................................................................... A-9
A.2 Bridge Commands ............................................................. A-10
A.2.1 device add ........................................................... A-10
A.2.2 device delete ....................................................... A-10
A.2.3 device flush ......................................................... A-11
A.2.4 device list ............................................................ A-11
A.3 PPP Commands ................................................................ A-12
A.3.1 Console object types ............................................. A-12
A.3.2 Console examples ................................................. A-12
A.3.3 <channel> echo every ......................................... A-13
A.3.4 <channel> pppoe ................................................ A-13
A.3.5 <channel> pvc .................................................... A-15
A.3.6 <channel> welogin .............................................. A-16
A.3.7 user .................................................................... A-16
A.4 NAT Commands ................................................................ A-17
A.4.1 event ................................................................... A-17
A.4.2 inbound / Port Address Translation / Port Mapping ... A-17
A.4.3 info ..................................................................... A-18
A.4.4 interfaces ............................................................ A-19
A.4.5 ip nat .................................................................. A-19
A.4.6 sessions .............................................................. A-20

A.5 DHCP Server Commands ................................................... A-21
A.5.1 config .................................................................. A-21
A.5.2 dnsrelay config ..................................................... A-23
A.5.3 dnsrelay retry ...................................................... A-24
A.5.4 dnsrelay server .................................................... A-24
A.5.5 dnsrelay status .................................................... A-25
A.5.6 dnsrelay trace/untrace .......................................... A-25
A.5.7 help .................................................................... A-26
A.5.8 status .................................................................. A-26
A.5.9 version ................................................................ A-27
A.6 BUN Commands ............................................................... A-28
A.6.1 bun list channels .................................................. A-28
A.7 PPTP Commands .............................................................. A-29
A.7.1 Console object types ............................................. A-29
A.7.2 Console Examples ................................................. A-29
A.7.3 bind .................................................................... A-30
A.7.4 <tunnel> create .................................................. A-31
A.7.5 <tunnel> delete .................................................. A-32
A.7.6 <tunnel> info ...................................................... A-32
A.7.7 list ...................................................................... A-32
A.8 SDSL Commands .............................................................. A-33
A.8.1 SDSL set ............................................................. A-33
A.8.2 SDSL config ......................................................... A-33
A.8.3 SDSL delete configuration line............................... A-34
A.8.4 SDSL watchdog .................................................... A-34
A.8.5 SDSL port configuration ........................................ A-35
Appendix B - Well-Known TCP/UDP Ports ...................................... B-1
Appendix C - Quick Start for Router Configurations (Flow Chart) C-1
Appendix D - Frequently Asked Questions ....................................... D-1
Appendix E - Troubleshooting Guide ................................................ E-1

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About This Manual
This manual is written for users who are familiar with console commands. It
contains instructions on how to configure your bridge/router for different network
configurations.
Chapter 1 - Documentation contains the list of manuals that comes with your
bridge/router package and the conventions that are used in the manuals.
Chapter 2 - Basics of the SDSL Bridge/Router gives you an introduction to the
bridge/router, including basic setups and connections.
Chapter 3 - Setting Up Local Management guides you on how to setup and
establish a communication link between your bridge/router and PC. With this local
mangement established, you can then start issuing console commands.
Chapter 4 - Basic Commands on Running Local Management gives some examples
of basic commands to run the local management.
Chapter 5 - Configuring Your Router guides you on how to configure your bridge/
router for different network configurations. The line protocols discussed are RFC
2684 (RFC 1483) Ethernet Framing, RFC 2684 (RFC 1483) IP Framing, RFC
2225 (RFC 1577) IP over ATM, RFC 2364 PPPoA and RFC 2516 PPPoE. The
configuring of NAT Inbound Port Forwarding, DHCP Server, DNS Relay and so on,
can also be found in this chapter.
Chapter 6 - Configuring Your Transparent Bridge guides you on how to configure
your bridge/router for transparent bridge.
Chapter 7 - Router Configuration Examples give you bridge/router configuration
examples based on RFC 2684 (RFC 1483) IP Framing and RFC 2364 PPPoA.
Chapter 8 - Configuring PPTP (Point-to-Point Tunnelling Protocol) guides you on
the console commands and setting up of the dial-up networking for PPTP.
Chapter 9 - Configuring Your Ethernet Card guides you to configure the IP address
of your Ethernet card so that it can work with this router.
Chapter 10 - Running DSLTEST tells you how to run the DSLTEST, which can check
the Ethernet connection and SDSL line connection.
You will be able to find detailed descriptions of the console commands at Appendix
A - Commonly Used Commands and the commonly used TCP/UDP Ports at Appendix
B - Well-Known TCP/UDP Ports. For an overview of bridge/router configurations,
please refer to Appendix C - Quick Start for Router Configurations (Flow Chart).
You may find some of your questions answered in Appendix D - Frequently Asked
Questions and Appendix E - Troubleshooting Guide.

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1. Documentation
User's & Technical Manual (READ THIS MANUAL FIRST!)
This User's & Technical Manual is a printed guide that is included with your
router package. Please refer to this manual for setting up and connecting
your router. It also contains console commands and advanced router
configurations that are mostly intended for experienced users. The sections on
Frequently Asked Questions and Troubleshooting Guide serve to provide some
guidance when encountering problems.
DSL Router Commander Software Manual 1
The software manual is a softcopy guide that contains information on DSL
Router Commander, a user-friendly user interface that provides a simple way
of configuring your network. A Glossary section is also included to describe
the terms used in the manual.
For queries or problems encountered, you may refer to the Frequently Asked
Questions and Troubleshooting Guide found on the User's & Technical Manual.
ATMOS Console Commands Reference Manual 1
The reference manual is a softcopy guide that contains the detailed
description of the console commands. For advance configurations, you may
refer to this manual for their descriptions.
1These manuals can be found on your SDSL Bridge/Router
CD-ROM that comes with your package.

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1.1 Conventions Used
• Text that appears in this style are console commands.
An example of console command:
ip device add ppp_device ether //ppp/DEVICE=1
Numbers in italics are to be replaced with values from your ISP /
System Administrator.
In the example:
ppp 1 pvc 0 35 ip , you are to replace 1, 0and
35 with actual values given by your System Administrator / Service
Provider.
 ISP is the acronym used for Internet Service Provider throughout the
manual.
xNumerics in superscript denote further explanation for the text.
Explanation can mostly be found at the bottom of the same page.
Note boxes contain information that you need to pay special attention to.

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2. Basics of the SDSL Bridge/Router
2.1 Introduction
Congratulations on your purchase of the SDSL Bridge / Router !
SDSL, which stands for Symmetric Digital Subscriber Line, featues the same high
data transmission rates both upstream and downstream. It is ideal to business
users as it enables them to take full advantage of applications (such as video
conferencing, LAN-to-LAN VPN connections and large file transfers) that require
high bandwidth in both directions.
The SDSL Bridge / Router offers faster and uninterrupted Internet access and is
capable of a data transmission rate up to 2.32 Mbps upstream and downstream.
This product is an embedded solution that is OS independent. It can be connected
to any computer with an Ethernet card. The Ethernet connection allows direct
interface to any existing IEEE 802.3 LAN network, providing instant broadband
Internet access to LAN networks with minimum hassle.
SDSL service providers can offer SDSL services to a multi-user business
environment with support for both Static and Dynamic IP Routing, Network
Address Translation and Dynamic Host Configuration Protocol Server.
This bridge/router features multiple data encapsulation formats for DSL transport
over ATM PVCs, including the widely supported ATM protocols RFC 1483 (MPoA),
RFC 1577 (IPoA) and RFC 2364 (PPPoA).
Utilising Conexant ZipWiresolution with 2B1Q line encoding used by major SDSL
manufacturers, this bridge/router further guarantees interoperability with network
providers worldwide.
2.2 System Requirements
Hardware
 Pentium MMX 233MHz (or above) with Ethernet card (installed with
TCP/IP Protocol)
 32MB RAM

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 10MB of free hard disk space
 A Serial Port
 A CD-ROM Drive
For Multiple PCs
- Ethernet Hub with Straight Ethernet cables
For Single PC
- Crossover Ethernet Cable
Software - Operating System
 Windows®95, 98, 98 Second Edition, Me
 Windows NT®4.0 (with Service Pack 3.0 or above), Windows®2000
2.3 Network Connections
This product may operate as a Bridge modem or Router.
2.3.1 Bridge Modem
Connection to single PC
2.3.2 Router
Connection to multiple PCs in a LAN
Router
Hub
multiple
PCs with
Ethernet
Cards
PC with Ethernet
Card
Ethernet
Bridge

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2 — Basics of the SDSL Bridge / Router
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2.4 LED Indicators
Ethernet ACT
Ethernet Activity: Lights up
when the Ethernet is
transmitting/receiving data.
Ethernet Link
Lights up when
the Ethernet link
is established.
SDSL Link
Lights up when the
SDSL connection is
established.
SDSL ACT
Lights up when
the SDSL Line
is transmitting/
receiving data.
Power
Lights up when
Power switch
is turned ON.
When the Power Switch is on, the Power LED
will light up. Once the bridge/router is initialized,
the SDSL Link LED will start blinking, attempting
to establish a connection. Upon successful
connection, the SDSL Link LED will remain lit.

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2 For connection to an Ethernet card, please use a cross RJ-45 Ethernet cable.
For connection to a Switch or Hub, you may use a normal (straight) RJ-45 Ethernet cable.
Power off your computer and any connected devices before
connecting your bridge/router !
to Ethernet Card,
Switch
or Hub2
The Power Mains
Telephone Wall Socket
(SDSL line)
Power Adaptor
PC
SDSL Bridge/
Router
Line
Jack
Serial Management
Console
Ethernet
MDI Port DC Power Jack
Power Switch
2.5 Connection
Switch or Hub

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3.1 Setting up the Serial Link
i) Connect one end of a serial cable to the COM Port (9-pin) of your PC and
the other end to the Serial Port (9-pin) of your router.
ii) Connect your router to the Power Mains via the Power adaptor (that comes
with your package). You may refer to Section 2.5 for the illustrated
connection.
3. Setting Up Local Management
Local management refers to the process of managing and configuring the settings
of your router for your network environment. It is done via a PC connected to
your router.
Before running local management, communication between your router and your
PC has to be configured and established for them to 'understand each other'. You
need to setup a physical link between your router and the PC via a serial cable
as described in Section 3.1. Section 3.2 will show you how to configure the
interface link to allow communication between your PC and your router.
Setting up of local management needs only to be carried out once
for the same PC. However if you are connecting your router to
another PC, you will need to run section 3.1 and 3.2 again.
Bridge / Router
serial cable rear of PC
DO NOT POWER ON YOUR ROUTER SWITCH YET !

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ii) Enter any name for your
new connection and
click OK.
iii) From the Connect To
dialog box, select
the COM port that
your router is
connected to and
click OK.
iv) From the Port Settings, make the
following selections for the fields:
Bits per second: 9600
Data bits: 8
Parity: None
Stop bits: 1
Flow control: None
Click OK. This completes
configuring the communication link
between your router and the PC.
3.2 Configuring the Serial Link
i) Run the HyperTerminal program from your PC.
(You may also use other Serial Communication Programs. HyperTerminal
program is used as an illustration here).
For example, if you are running Windows®98, from your Windows taskbar,
click Start > Programs > Accessories > Communications > HyperTerminal.
Double-click HyperTerminal.

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3 — Setting Up Local Management
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This indicates successful serial link.
(If the messages did not display, power off your router and check the connection
of your serial cable. Make sure that the connection is firm and power on the
router again.)
You may now proceed with the following sections to run local management.
v) Power on the Power Mains and the switch on your router. You should see
similar messages as illustrated, on your HyperTerminal. (Actual messages vary
with different system and firmware version.)

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•Type help to display on-line help on the console commands.
•Type home to return to the initial command prompt.
•Type .to repeat previous command.
•Press ñkey on your keyboard to display previous command line
entered.
•Console commands are case-sensitive. Punctuations (e.g. '_' underscore,
'-' hyphen, ' ' spacing, etc) must be adhered to strictly.
•For detailed description and syntax of console commands, you may refer
to Appendix A - Commonly Used Commands on this manual or the
ATMOS Console Commands Reference Manual found on the CD-ROM.
4. Basic Commands on Running Local
Management
This section gives you the basic guidelines on console commands, some settings
and commands, and how to connect/disconnect your SDSL link.
4.1 Guidelines
The commands in this manual are to be issued at initial command
prompt. You may also choose to go to the respective directories and
run the commands from there. (For example, upon sdsl>prompt, you
need only to type
sdsl config to view SDSL port attributes and BUN
port declarations.)
4.2 Settings and Commands for the Modem
i) To list current status of SDSL
bun show port sdsl

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ii) To set line rate (has to be manually done on both sides CPE and DSLAM)
sdsl set sdslphytargetlinerate=<rate>kbps
config save
restart
where <rate> has to be one of the following values: 144, 160, 192, 208, 272,
384, 400, 416, 528, 768, 784, 1040, 1152, 1168, 1536, 1552, 1568, 2040
or 2320; and both CO (set by SDSL service provider) and CPE must be set to
the same rate for connection to establish successfully.
iii) To set modem as CO (HTU-C) in back-to-back configurations
sdsl set sdslphyhtutype=htu-c
config save
restart
iv) To set modem as CPE (HTU-R) [default]
sdsl set sdslphyhtutype=htu-r
config save
restart
v) To monitor traffic
bun list channels
vi) To view SDSL settings
sdsl config
4.3 To Disconnect/Connect the SDSL Link
i) To disconnect the SDSL link:
bun set port sdsl/sdslactivateline=false
(Upon issuing this command, SDSL Link will be disconnected unless the
following command is issued.)
ii) To re-connect (establish) the SDSL link:
bun set port sdsl/sdslactivateline=true