ADC 400F User manual
விளம்பரம்
விளம்பரம்
Megabit Modem 400F, 500L, 600F, and
700F User Manual
Version 3.2.X
Catalog Number
MMD4090I1 Issue 1
Copyright
March 2001
©Copyright 2001 ADC DSL Systems, Inc. All Rights Reserved.
Trademark Information
ADC is a registered trademark of ADC Telecommunications, Inc.
Avidia and Megabit Modem are registered trademarks of PairGain Technologies, Inc. No right, license, or interest to such trademarks is granted hereunder, and you agree that no such right, license, or interest shall be asserted by you with respect to such trademark.
Other product names mentioned in this practice are used for identification purposes only and may be trademarks or registered trademarks of their respective companies.
Disclaimer of Liability
Information contained in this document is company private to ADC DSL Systems, Inc., and shall not be modified, used, copied, reproduced or disclosed in whole or in part without the written consent of ADC.
Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In no event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits, and
ADC further disclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of liability applies to all products, publications and services during and after the warranty period.
ii Megabit Modem 400F, 500L, 600F, and 700F User Manual
About This User Manual
A
BOUT
T
HIS
U
SER
M
ANUAL
Use this manual to install and configure the Megabit Modem ® 400F, 500L, 600F, and 700F.
This manual provides instruction on:
• information you will need to configure the modem
• unpacking and inspecting the modem for installation
• installing the modem
• setting up parameters for your applications that will be used to configure the modem
• configuring system parameters
• configuring sessions between the modem and a service provider
• monitoring and troubleshooting the modem
Chapter 10 provides a reference for the technology implemented in the Megabit Modem 400F,
500L, 600F, and 700F. This chapter covers information about ATM over ADSL transmission, operating modes of PPP or bridging/routing, and SNMP management.
IP addresses used in this manual are for example only. You will acquire your own addresses from the service provider and your information services coordinator to configure the Megabit
Modem 400F, 500L, 600F, and 700F. However, you will use the IP address specified in
“Accessing the Modem Web Pages” on page 27 to access the Megabit Modem 400F, 500L,
600F, and 700F from a Web browser.
D
OCUMENT
C
ONVENTIONS
Two types of messages, identified by icons, appear in the text.
Notes contain information about special circumstances.
Cautions indicate the possibility of equipment damage or the possibility of personal injury.
Megabit Modem 400F, 500L, 600F, and 700F User Manual iii
Product Certifications
P
RODUCT
C
ERTIFICATIONS
FCC Class B Compliance
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
UL
This product meets all safety requirements per UL-1950 standard.
CE
This product meets all EMC and safety requirements per EN 300 386-2 and IEC 950
(EN60950).
iv Megabit Modem 400F, 500L, 600F, and 700F User Manual
Table of Contents
T
ABLE OF
C
ONTENTS
Chapter 1: About The Product............................................................................................... 1
Megabit Modem 400F ......................................................................................................... 2
Megabit Modem 500L ......................................................................................................... 4
Megabit Modem 600F ......................................................................................................... 5
Megabit Modem 700F ......................................................................................................... 6
Chapter 2: What You Need To Start ..................................................................................... 9
Verify Package Contents ..................................................................................................... 9
Requirements For Your System ........................................................................................ 10
Requirements For The Installation Site ............................................................................. 10
Location for Modem Installation ........................................................................ 10
Phone Service...................................................................................................... 13
What You Need from Your Service Provider ................................................................... 13
What You Will Choose ..................................................................................................... 14
Configuration ...................................................................................................... 14
Power Cable ........................................................................................................ 14
Chapter 3: Installing the Modem ......................................................................................... 15
Attaching the Feet.............................................................................................................. 16
Setting the MDI/MDI-X Switch ........................................................................................ 17
Installing Cabling .............................................................................................................. 18
Setting Up ADSL Service ................................................................................................. 20
Checking LED Indications ................................................................................................ 20
Connecting Phone Service................................................................................................. 21
Chapter 4: Setting Up For Configuration ........................................................................... 23
Setting Up the PC To Configure the Modem .................................................................... 24
Configuring a Web Browser.............................................................................................. 25
Accessing the Modem Web Pages..................................................................................... 27
Saving the Configuration................................................................................................... 28
Megabit Modem 400F, 500L, 600F, and 700F User Manual v
Table of Contents
Saving the Configuration to NVRAM.................................................................29
Resetting the Modem...........................................................................................30
Resetting the Modem to Factory Defaults...........................................................31
Chapter 5: Configuring System Settings .............................................................................35
Defining TFTP Parameters ................................................................................................36
Defining SNMP Parameters...............................................................................................38
Defining Static NAT Entries..............................................................................................40
Configuring Static MAC Entries .......................................................................................42
Display Static MAC Entries ................................................................................42
Add a Static MAC Entry .....................................................................................42
Modify a Static MAC Entry ................................................................................42
Delete a Static MAC Entry..................................................................................43
Configuring Static Routes..................................................................................................44
Display Static Routes ..........................................................................................44
Add a Static Route...............................................................................................44
Modify a Static Route..........................................................................................44
Delete a Static Route ...........................................................................................45
Configuring System Security.............................................................................................46
Admin IP Address ...............................................................................................46
RS-232 MGMT Port............................................................................................47
Selecting the System Mode of Operation ..........................................................................48
Chapter 6: Configuring PPP Sessions ..................................................................................51
Selecting Configuration Parameters ..................................................................................52
Setting Up the PPP Mode (700F Only) .............................................................................52
Configuring the WAN PPP Sessions .................................................................................53
Add a PPP over ATM WAN Session ..................................................................54
Modify a PPP over ATM WAN Session.............................................................57
Delete a PPP over ATM WAN Session ..............................................................57
Configuring the LAN.........................................................................................................58
vi Megabit Modem 400F, 500L, 600F, and 700F User Manual
Table of Contents
Configure Modem Parameters ............................................................................ 58
Saving the Configuration .................................................................................... 59
Assigning LAN Users to PPP Sessions ............................................................................. 60
Add a User Assignment ...................................................................................... 60
Delete a User Assignment:.................................................................................. 61
Activating and Deactivating Sessions ............................................................................... 62
Chapter 7: Configuring Bridging/Routing Sessions ........................................................... 63
Setting Up the Bridging/Routing Mode (700F Only)........................................................ 64
Configuring the WAN Bridging/Routing Sessions ........................................................... 65
Add a Bridging/Routing WAN Session .............................................................. 66
Modify a Bridging/Routing WAN Session ......................................................... 68
Delete a Bridging/Routing WAN Session........................................................... 68
Configuring the LAN ........................................................................................................ 69
Configure Modem Parameters ............................................................................ 69
Saving the Configuration .................................................................................... 70
Activating and Deactivating Sessions ............................................................................... 71
Chapter 8: Viewing Statistics ............................................................................................... 73
Viewing ADSL Status ....................................................................................................... 73
Viewing Network Statistics ............................................................................................... 75
LAN Statistics ..................................................................................................... 75
WAN Statistics.................................................................................................... 76
Chapter 9: Maintenance and Troubleshooting ................................................................... 77
Maintenance ...................................................................................................................... 77
Updating Software .............................................................................................. 77
Using the RS-232 Management Port................................................................... 80
Setting Up the PC to Request an IP Address..................................................................... 83
Troubleshooting................................................................................................................. 84
Chapter 10: Technical Reference ......................................................................................... 85
Transmission on the Wide Area Network ......................................................................... 85
Megabit Modem 400F, 500L, 600F, and 700F User Manual vii
Table of Contents
ADSL...................................................................................................................85
ATM ....................................................................................................................86
System Mode Encapsulation..............................................................................................87
PPP ......................................................................................................................87
Bridging...............................................................................................................88
Routing ................................................................................................................90
Encapsulation for RFC 1483 Bridging/Routing ..................................................90
Management Protocols ......................................................................................................91
SNMP ..................................................................................................................91
MIB and Trap Support ........................................................................................92
DNS Resolution .................................................................................................................93
TFTP Server.......................................................................................................................93
Appendix A: Specifications and Data ...................................................................................95
WAN Interface Specifications ...........................................................................................95
Encapsulation.....................................................................................................................96
LAN Interface ....................................................................................................................97
Physical Specifications ......................................................................................................97
Power Supply .....................................................................................................................97
Environmental....................................................................................................................97
Compliance ........................................................................................................................98
RFCs ..................................................................................................................................98
MIBs ..................................................................................................................................98
Rate vs. Reach....................................................................................................................99
Hardware..........................................................................................................................100
Installation Kit ...................................................................................................100
Connector Pinouts .............................................................................................101
Appendix B: Technical Assistance and Returns ................................................................103
Technical Support ............................................................................................................103
World Wide Web .............................................................................................................103
viii Megabit Modem 400F, 500L, 600F, and 700F User Manual
Table of Contents
Advance Replacement ..................................................................................................... 103
Billing .............................................................................................................................. 104
Returns............................................................................................................................. 105
Appendix C: Configuration Worksheets ............................................................................ 107
Appendix D: Glossary .......................................................................................................... 117
Megabit Modem 400F, 500L, 600F, and 700F User Manual ix
Table of Contents x Megabit Modem 400F, 500L, 600F, and 700F User Manual
A
BOUT
T
HE
P
RODUCT
1
You have purchased the Megabit Modem ® that connects your Ethernet LAN to service providers for instant and high-speed access to the Internet or to other types of Wide
Area Network (WAN) applications. It uses Asymmetric
Digital Subscriber Line (ADSL) technology to give you broadband access over existing cabling in your home, office, or building.
The Megabit Modem is easy to install and configure. To install the modem:
• connect a telephone cable from the modem to a wall phone jack for ADSL service
• connect a cable from the modem to a PC or an Ethernet hub for LAN service
• connect a power cable to a local power source
To access the modem configuration, you launch your Web browser and enter the modem IP address as the URL. Use the modem Web pages to:
• configure ADSL, LAN, and WAN parameters
• view ADSL, IP, LAN, and WAN statistics
• upgrade software
• define SNMP parameters
• perform a system reset
• define static MAC, NAPT, and route tables
In addition, the LEDs on the modem front panel provide continual status at-a-glance for network and modem connections.
The following sections list the Megabit Modem 400F, 500L, 600F, and 700F features and applications.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 1
Megabit Modem 400F
M
EGABIT
M
ODEM
400F
The Megabit Modem 400F is designed for LAN applications and offers these features:
• supports full-rate ADSL and G.lite
• offers rates up to 7.552 Mbps downstream and 928 kbps upstream for full rate
• offers rates up to 1.5 Mbps downstream and 512 kbps upstream for G.lite
• offers symmetric rates up to 928 kbps
• supports 1483 bridging and routing over ATM
• supports up to 32 Bridge/Router sessions
• contains an embedded SNMP agent
• operates as a DHCP server
• supports NAT (including NAPT) and DNS
See the illustration on the next page for an application example.
2 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Business Internet Access
Chapter 1: About The Product
400F
ADSL
Internet
Megabit Modem 400F, 500L, 600F, and 700F User Manual 3
4
Megabit Modem 500L
M
EGABIT
M
ODEM
500L
The Megabit Modem 500L is a rate adaptive G.lite modem for single user applications and offers these features:
• complies with the G.lite standard
• offers rates up to 1.5 Mbps downstream and 512 kbps upstream
• supports RFC 2364 PPP over ATM (AAL5)
• supports up to 8 sessions
• contains an embedded SNMP agent
• operates as a DHCP server
• supports NAT (including NAPT) and DNS
Microfilter
500L
ADSL
Internet
Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 1: About The Product
M
EGABIT
M
ODEM
600F
The Megabit Modem 600F is a high-performance ADSL modem designed for power users. It offers these features:
• supports full-rate ADSL and G.lite
• offers rates up to 7.552 Mbps downstream/928 kbps upstream for full rate
• offers rates up to 1.5 Mbps downstream/512 kbps upstream for G.lite
• offers symmetric rates up to 928 kbps
• supports RFC 2364, carrying PPP traffic over ATM (AAL5)
• supports 32 PPP sessions
• contains an embedded SNMP agent
• operates as a DHCP server
• supports NAT (including NAPT) and DNS
600F
POTS
Splitter
Provider
Network
Megabit Modem 400F, 500L, 600F, and 700F User Manual 5
Megabit Modem 700F
M
EGABIT
M
ODEM
700F
The Megabit Modem 700F is designed as an ADSL router for LAN applications.
• supports full-rate ADSL and G.lite.
• offers rates up to 7.552 Mbps downstream/928 kbps upstream for full rate
• offers rates up to 1.5 Mbps downstream/512 kbps upstream for G.lite
• offers symmetric rates up to 928 kbps
• supports RFC 2364 PPP traffic over ATM (AAL5)
• supports 1483 bridging and routing over ATM
• supports up to 32 sessions in PPP Over ATM mode or supports up to 32 sessions in Bridge/Router mode
• contains an embedded SNMP agent
• operates as a DHCP server
• supports NAT (including NAPT) and DNS
See the illustration on the next page for an application example.
6 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Large Business Internet Access
Chapter 1: About The Product
700F
ADSL
Internet
Megabit Modem 400F, 500L, 600F, and 700F User Manual 7
Megabit Modem 700F
8 Megabit Modem 400F, 500L, 600F, and 700F User Manual
W
HAT
Y
OU
N
EED
T
O
S
TART
2
This chapter identifies the preparations and prerequisites for installing the Megabit Modem
400F, 500L, 600F, and 700F. Before installing the modem, verify that:
• The contents of the package are accurate as described on this page.
• Your system meets the requirements for connecting to and configuring the modem
(see “Requirements For Your System” on page 10 ).
• Your facility meets the installation site requirements (see “Requirements For The
Installation Site” on page 10 ).
• The configuration parameters are available from your service provider (see “What You
Need from Your Service Provider” on page 13 ).
V
ERIFY
P
ACKAGE
C
ONTENTS
As you unpack your Megabit Modem, visually inspect the contents for signs of damage. If the equipment was damaged in transit, report the damage to the transportation company and to the sales representative.
Check the contents of the package for the following:
• one black cable
• one grey phone cord
• four rubber, self-adhesive feet
• two screws
• power supply and optional power cord
(see “Power Cable” on page 14 for options)
• grey cable and DB-9 console port adapter
If you need to store the modem for a prolonged period, store it in the original antistatic bag and packaging. Observe environmental specifications as stated on page 97 .
Megabit Modem 400F, 500L, 600F, and 700F User Manual 9
Requirements For Your System
R
EQUIREMENTS
F
OR
Y
OUR
S
YSTEM
You need the following hardware and software to complete the installation and configuration of the Megabit Modem 400F, 500L, 600F, and 700F:
• PC with an Ethernet Network Interface Card (NIC)
• TCP/IP network protocol stack (see the operating system documentation)
• Web browser installed such as Netscape ® or Internet Explorer ® Version 4.0 or higher
• Ethernet hub (optional)
R
EQUIREMENTS
F
OR
T
HE
I
NSTALLATION
S
ITE
Before installing the Megabit Modem 400F, 500L, 600F, and 700F, you must:
• select a location to install the modems as described in the section below
• identify requirements to connect phones as described in the section “Phone Service” on page 13
Location for Modem Installation
You can install the modem either:
• placed on a flat surface (shown on page 11 )
• mounted on a wall (shown on page 12 )
Your facility must have the following minimum site requirements to install each modem:
• power outlet
• RJ-11 wall jack that has DMT ADSL service available
10 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 2: What You Need To Start
Flat-Surface Mount
Do not stack the modems when installing on a flat surface. The modems do not dissipate heat properly when stacked.
Place the modems on a flat surface, such as on a table or in a rack.
PWR
LINK LA
TX
N
MEG
RX
ABIT
SY
NC
MODEM
TX ADSL
RX
MAR
700F
OH
Minimum
1-inch clearance
Minimum
1-inch clearance
PWR
LINK LA
TX
N
MEG
RX
ABIT
MODEM
SY
NC
TX ADSL
RX
MAR
700F
OH
PWR
LINK
LA
TX
MEG
RX
ABIT
MODEM
SY
NC
TX
ADSL
RX
MAR
700F
OH
Megabit Modem 400F, 500L, 600F, and 700F User Manual 11
Requirements For The Installation Site
Wall Mount
Observe the minimum dimensions between multiple modems (shown in the illustration) to ensure sufficient ventilation for heat dissipation
Mount the Megabit Modem on a wall using the two screws included with the modem.
12 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 2: What You Need To Start
Phone Service
If you get phone service with your data service, you need the following:
• S1 Network Interface Device (or other POTS splitter) installed by your service provider
• RJ-11 phone jacks for phone service
The POTS splitter is a device that separates data transmission from phone service. After installing the POTS splitter, connect separate jacks for data and for phone service. Ensure that your service provider indicates which jacks are for data and which jacks are for phone service.
W
HAT
Y
OU
N
EED FROM
Y
OUR
S
ERVICE
P
ROVIDER
This section lists the information you need to configure system settings and sessions for the modem. Contact your service provider for this information. Use the worksheets, provided in
Appendix C on page 107 , to record your configuration information. When you begin to configure the modem in Chapter 4 on page 23 , the procedures refer you to the proper table for the configuration information that you recorded.
1 System mode (WAN connection for the sessions between the modem and the service provider): PPP over ATM or Bridge/Router RFC 1483
2 If Bridge/Router:
• Configure as a Bridge only, as a Router only, or as a Bridge and Router.
• If Bridge or Router, choose LLC or VC-MUX encapsulation.
• If Router, choose the version of and direction for RIP (RIP1, RIP2, or RIP1 compatible).
• If Bridge, select whether or not to enable Spanning Tree.
3 If PPP over ATM and using CHAP, identify CHAP authentication name.
4 Session address for Ports 1 through 32 (WAN configuration):
• ATM VPI and ATM VCI (specified for each session)
• when using fixed IP addresses, IP address specified for each session by the service provider
• for PPP system mode, Login Name and Login Password (specified for each session)
For more information about the configuration choices listed above, see Chapter 10 , “Technical
Reference” on page 85 .
Megabit Modem 400F, 500L, 600F, and 700F User Manual 13
What You Will Choose
W
HAT
Y
OU
W
ILL
C
HOOSE
Before configuring the modem, consider the options in the following “Configuration” section.
Ensure that you have the appropriate power cable for your facility as described below in the
“Power Cable” section.
Configuration
You can choose to use:
• Network Address Translation (NAT) protocol. This protocol includes both basic NAT and
Network Address Port Translaton (NAPT). Basic NAT uses a one-to-one mapping of a private IP address and a public IP address. NAPT uses a multiple-to-one mapping of multiple IP addresses and their ports to a single IP address and its ports. For more information about the NAT protocol, see “NAT” on page 87 .
• Domain Name System (DNS) resolution. You must specify the IP address for a device to serve as the DNS resolver. You can also specify a second IP address to designate another device to serve as a secondary DNS resolver. The DNS device maps human-readable addresses to IP addresses. For simplicity and ease of management, use DNS relay. DNS relay allows the LAN hosts to configure the Megabit Modem as the DNS server. Depending on the host sending the DNS message and what session it is assigned to, the Megabit
Modem will relay the message to the appropriate DNS server. For more information about
DNS resolution, see “DNS Resolution” on page 93 .
• TFTP server for downloading software updates to the modem. You specify the IP address, subnet mask, and directory path (where software updates are located) for the device that will be the TFTP server.
Power Cable
The Megabit Modem 400F, 500L, 600F, and 700F are available with a variety of power supplies and power cords. When you order your modem, choose one of the following as the last number in the product part number (example: use 150-2122-7x for the 700F) for your order to indicate which power option you need:
• 2 indicates a power supply for International use and does not include a power cord.
• 3 indicates a power supply for North American use and includes a North American power cord.
• 4 indicates a Universal power supply and includes a European power cord.
• 5 indicates a Universal power supply and includes a UK/Ireland power cord.
14 Megabit Modem 400F, 500L, 600F, and 700F User Manual
I
NSTALLING THE
M
ODEM
3
The Megabit Modem is easy to install by:
• attaching the four adhesive-backed feet
• setting the MDI/MDI-X switch
• connecting a cable from the modem to a PC or an Ethernet hub for LAN service
• connecting a phone cord from the modem to a wall phone jack for DMT ADSL Internet or other types of WAN services
• connecting a power cable to a local power outlet
Perform the installation on the following pages (see “Requirements For The Installation Site” on page 10 to determine where to place modems). Use the parts listed below in the installation procedures.
Part
Rubber feet (four)
Black cable
Grey cord
Power cable
Grey cable and adapter
Function
Installation Kit
Attaches to the base of the modem.
Connects the modem 10/100BASE-T connector to the LAN through a hub or to a PC NIC. This cable is a straight-through Category 5 cable.
Connects the modem ADSL connector to the RJ-11 wall jack with DMT
ADSL service for access to the Internet or other types of WAN applcations.
Connects the modem POWER connector to the local power source. Power supply optionally has a power cord. (See “Power Cable” on page 14 for selection options.)
Not In Installation Kit (in ship box)
Connects the RS-232 MGMT port to an ASCII terminal or a PC running terminal emulation software. Adapter assembly connects to a DB-9 connector on the PC. Then, one RJ-45 connector installs in the adapter and the other connector into the console port on the modem.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 15
Attaching the Feet
A
TTACHING THE
F
EET
Attach each of the four adhesive-backed rubber feet to a footprint recess on the bottom of the modem.
16 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 3: Installing the Modem
S
ETTING THE
MDI/MDI-X S
WITCH
Using the MDI/MDI-X switch, the Megabit Modem can communicate with a device on the
LAN that is either MDI or MDI-X without having to change the cable (a straight-through cable is supplied with the installation kit).
Set the switch for the 10/100BASE-T port to either:
• MDI-X when you are connecting to a device with a MDI port such as a PC with an
Ethernet NIC
• MDI when you are connecting to a device with a MDI-X port such as a hub, repeater, bridge, or router
For connection to devices such as a PC
MDI-X
MDI
For connection to devices such as a hub
MDI MDI-X 10/100BASE-T RS232 MGMT ADSL POWER
Megabit Modem 400F, 500L, 600F, and 700F User Manual 17
Installing Cabling
.
I
NSTALLING
C
ABLING
Install the black cable for the 10/100BASE-T LAN connection, the grey phone cord for the
ADSL port WAN connection, and the power cable to the power connector (cable specified on page 14 ).
Megabit Modem
PC, hub or other network device
Wall jack with DMT ADSL service
Switch
MD
I M
DI-X
10BASE-T
10/100BASE-T port
RS-232 MGMT port
(600F and 700F only)
RS232
M
GMT
ADSL port
Power connector
DS
L
PO
W
ER
To power outlet
18 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 3: Installing the Modem
1 After you have set the MDI/MDI-X switch to the correct position, connect the black cable from the modem 10/100BASE-T port to your PC or hub.
2 Connect the grey phone cord from the modem ADSL port to the ADSL wall jack. If your installation requires a splitter or microfilter, refer to the manufacturer’s documentation for further instructions.
3 Connect the power cable from the modem power connector to a power outlet.
If you need pinouts for the ADSL and 10/100BASE-T connectors, see “Connector Pinouts” on page 101 . For information on how to use the RS-232 management port for maintenance, see
“Using the RS-232 Management Port” on page 80 .
Megabit Modem 400F, 500L, 600F, and 700F User Manual 19
Setting Up ADSL Service
TX
RX
MAR
OH
S
ETTING
U
P
ADSL S
ERVICE
The service provider sets up the ADSL parameters for your service. The modem must have the ADSL SYNC LED lit before you can connect sessions with your service provider. Verify
SYNC in the following section, “Checking LED Indications.”
C
HECKING
LED I
NDICATIONS
The table below describes LED indications for all operational modes. LEDs on the modem front panel provide continual status at-a-glance for network and modem connections.
LED
PWR
LINK
TX
RX
SYNC
State
On green
Off
On green
Off
Flashing green
Off
Flashing green
Off
On green
Flashing green
Off
Flashing green
Off
Flashing green
Off
On green
Off
On yellow
Off
Description
Modem has power.
Modem does not have power.
LAN
A PC, hub, or other network device is connected to the modem
10/100BASE-T interface.
No device is connected to the modem 10/100BASE-T interface.
Modem is transmitting data to devices on the LAN.
Modem is not transmitting data to the LAN.
Modem is receiving data from devices on the LAN.
Modem is not receiving data from the LAN.
ADSL
ADSL transceiver is synchronized and in normal operation mode.
ADSL transceiver is in a start-up sequence.
ADSL modem transceiver is not detecting a transceiver at the far end.
Modem is transmitting data to the service provider.
Modem is not transmitting data to the service provider.
Modem is receiving data from the service provider.
Modem is not receiving data from the service provider.
ADSL margin is at or above the value set by the service provider.
ADSL margin is below the value set by the service provider.
Telephone receiver is off hook.
Telephone receiver is on hook.
20 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 3: Installing the Modem
C
ONNECTING
P
HONE
S
ERVICE
The Megabit Modem 400F, 500L, 600F, and 700F modem provide full support for the ITU standard G.hs, G.dmt, and G.lite. In the traditional ADSL deployment, POTS splitters are required to separate data transmission from phone service. In this case, the service provider will supply you with a splitter. You will have one or more jacks for phone service and one jack for
ADSL data service. Connect your phones to the jacks indicated by the service provider for phone service. However, using G.lite allows for splitterless deployment. In this case, you will not need to install a splitter.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 21
Connecting Phone Service
22 Megabit Modem 400F, 500L, 600F, and 700F User Manual
S
ETTING
U
P
F
OR
C
ONFIGURATION
4
Set up a PC and a Web browser to configure the Megabit Modem 400F, 500L, 600F, and 700F.
This chapter provides the set up procedures, then shows you how to access and navigate the
Megabit Modem Web pages. The configuration process flow is shown below.
Start
Chapter 4 on page 24
Setting Up the PC To Configure the Modem
Chapter 4 on page 25
Configuring a Web Browser
Accessing the Modem Web Pages
Chapter 4 on page 26
Chapter 5 on page 35
500L, 600F, and 700F
Configuring PPP over ATM Sessions
• Configuring the WAN PPP
Sessions
• Configuring the LANClick Apply .
• Activating and Deactivating
Sessions
Configuring System Settings
• Defining TFTP Parameters
• Defining SNMP Parameters
• Configuring System Security
• Selecting the System Mode of
Operation
OR
400F and 700F
Configuring Bridging/Routing
Sessions
• Configuring the WAN
Bridging/Routing Sessions
• Configuring the LAN
• Activating and Deactivating
Sessions
Megabit Modem 400F, 500L, 600F, and 700F User Manual 23
Setting Up the PC To Configure the Modem
S
ETTING
U
P THE
PC T
O
C
ONFIGURE THE
M
ODEM
Set up your PC to be on the same IP subnet as the modem. Since the modem default uses DHCP, it will automatically configure your IP settings once you set up that option. If you want to view or change the default IP address for the modem, see “Using the RS-232 Management Port” on page 80 .
The following is an example of how to set up a PC running Microsoft Windows 98.
1 Open the Control Panel then double-click the Network icon.
2 From the Configuration tab, double-click TCP/IP .
3 If DHCP has been enabled on the modem (default), select Obtain an IP address automatically and skip to step 5. Otherwise, select Specify an IP address .
4 Enter IP Address and Subnet Mask. The default LAN IP address is 192.168.0.1. Use an IP address from the following range: 192.168.0.2 to 192.168.0.254. The default subnet mask is 255.255.255.0.
5 Click OK to close the TCP/IP Properties window.
6 Click OK to close the Network window.
7 Click OK to restart the computer.
24 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 4: Setting Up For Configuration
C
ONFIGURING A
W
EB
B
ROWSER
Access the Megabit Modem Web page through a Web browser (see page 10 for Web browser versions supported). The Web browser must have the proxies disabled and cache settings enabled to compare the cached document against the network document every time it is accessed.
The following is an example of how to make the configuration changes using Netscape
Navigator 4.0.
1 Open your Web browser.
2 Click Edit , Preferences to open the Preferences dialog.
3 From Category, select Advanced , click Cache, then select Every time .
4 From Category, select Advanced , click Proxies , then select Direct connection to the Internet .
5 Click OK to close the Preferences window.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 25
Configuring a Web Browser
The following is an example of how to make the configuration changes using
Internet Explorer 5.5:
1 Open your Web browser.
2 Click Tools , Internet Options to open the Internet Options dialog.
3 In the Temporary Internet Files section of the dialog, click Settings .
4 Select Every visit to the page , then click OK .
5 Click the Connections tab, then click LAN Settings to open the LAN Settings dialog.
6 In the Proxy Server section of the dialog, clear the Use a proxy server box.
7 Click OK to close the LAN Settings dialog.
8 Click OK to close the Internet Options dialog.
26 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 4: Setting Up For Configuration
A
CCESSING THE
M
ODEM
W
EB
P
AGES
Type http://192.168.0.1
in the Location Bar field of the Web browser (as shown below), then press
ENTER . (192.168.0.1 is the default IP address for the Ethernet port and is a private address specified for use by RFC 1918. If you change the Ethernet IP address through the management port, you will enter the new IP address in the Location Bar .)
By default, the Megabit Modem
(except the 400F) initializes in
“PPP over ATM” mode and displays the page to the top right: http://192.168.0.1/index.htm
Location Bar
If the Megabit Modem is in
“Bridging/Routing” mode, it displays this page:
Megabit Modem 400F, 500L, 600F, and 700F User Manual 27
Saving the Configuration
S
AVING THE
C
ONFIGURATION
Save the majority of the configuration changes by the clicking Apply . However, there are other configuration changes that require you to reset the modem in order to update NVRAM with these modifications. These changes are described in the following table:
Item
System Mode
LAN IP Address and Net Mask
DHCP IP Address Range
RIP Version
Menu system lan lan lan
Tab general general general general
See the following sections to:
• save configuration changes to NVRAM on page 29
• reset the modem to activate the configuration on page 30
• reset the modem to restore the factory default values on page 31
28 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 4: Setting Up For Configuration
Saving the Configuration to NVRAM
After clicking Apply at the bottom of a configuration page , the changes are automatically saved to NVRAM. Changes may either take effect immediately or after system reset.
To the right is an example of a configuration change (TFTP server IP address) that only requires you to click Apply for changes to take effect immediately (commit changes to
RAM) and be saved to NVRAM.
Below is an example of a configuration change (LAN IP address) that requires both the click of
Apply at the configuration screen and a system reset for changes to take effect and to be saved to NVRAM.
1 Locate Apply at the bottom of the dialog.
2 Click Apply to open the confirmation dialog.
3 Click OK to reset the modem.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 29
Saving the Configuration
Resetting the Modem
Resetting the modem causes all active connections to drop.
After you make changes to the modem configuration and write the changes to NVRAM or return modem configuration to factory defaults, you must reset the modem. See page 28 for a list of changes that you must reset to effect.
1 From the system menu, click general to open the General System window.
2 Click Reset Unit.
3 Click Proceed to reset the modem.
30 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 4: Setting Up For Configuration
Resetting the Modem to Factory Defaults
You can return the Megabit Modem parameters to the factory default values. This provides a known starting point if you are troubleshooting the system or simply need to reconfigure parameters. The factory default values are listed on page 32 and page 33 .
1 From the system menu, click general to open the General System window.
2 Click Set Factory Default.
When you click Proceed to return to factory default values, the modem automatically resets.
3 Click Proceed to return to factory default values.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 31
Saving the Configuration
Listed in the table below are the default values for the Megabit Modem in PPP over ATM mode.
Reference this table to learn the values assigned to the modem after resetting it to factory default.
Parameter Default Value Parameter Default Value
System Mode
TFTP parameters
TFTP Server IP Address
TFTP Server Net Mask
TFTP Server Path
File Name
Admin IP Address
System Setup
PPP over ATM SNMP parameters
192.168.0.2
Enable trap sending
Trap Server IP Address
255.255.255.0
blank field tiger.bin
0.0.0.0
Trap Server Net Mask
Trap Community String
Get Community String
Set Community String
Not enabled
0.0.0.0
255.255.255.0
public public private
PPP Over ATM WAN Configuration
Service Name
ATM VPI
ATM VCI
Login Name
Login Password
Chap Host
Address Translation
Address Assignment
IP Address
User Assignments (for PPP WAN)
Service Name
User’s IP Address blank field
0
100 blank field blank field blank field
Enabled
Dynamic
0.0.0.0
blank field
0.0.0.0
PPP Over ATM
PPP Over ATM LAN Configuration
IP Address
IP Net Mask
DHCP
Start DHCP IP Address
End DHCP IP Address
Primary DNS
192.168.0.1
255.255.255.0
Enabled
192.168.0.2
192.168.1.1
192.168.0.1
Gateway 192.168.0.1
Static NAT Entries (private, proxy, and remote)
IP Addresses
Ports
Protocol
0.0.0.0
0
UDP
32 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 4: Setting Up For Configuration
Listed in the table below are the default values for the Megabit Modem in Bridge/Router mode.
Reference this table to learn the values assigned to the modem after resetting it to factory default.
Parameter
Brouter WAN Configuration
Service Name
ATM VPI
ATM VCI
Bridging
Port Priority
Routing
RIP Direction
RIP Version
IP Address
IP Net Mask
Encapsulation
Static Mac Address Entry
MAC Address
Source Port
Dest Port
Static Route Entry
(IP Address, IP Network Mask,
Gateway IP Address)
Default Value Parameter
Bridge/Router RFC 1483
Not selected blank field
0
100
Enabled
101
Disabled
Both
Rip1
0.0.0.0
0.0.0.0
LLC all zeros
0:0:0:0:0:0
0
0
0.0.0.0
Spanning Tree
Brouter LAN Configuration
Bridging
Port Priority
Routing
RIP Direction
RIP Version
IP Address
IP Net Mask
Default gateway IP Address
Default gateway IP Net Mask
DHCP
Start IP Address
End IP Address
Primary DNS
Gateway
Default Value
Selected
Enabled
100
Disabled
Both
Rip1
192.168.0.1
255.255.255.0
192.168.0.1
255.255.255.0
Not enabled
192.168.0.2
192.168.1.1
192.168.0.1
192.168.0.1
Megabit Modem 400F, 500L, 600F, and 700F User Manual 33
Saving the Configuration
34 Megabit Modem 400F, 500L, 600F, and 700F User Manual
C
ONFIGURING
S
YSTEM
S
ETTINGS
5
Before configuring sessions with a service provider, set up system parameters for the Megabit
Modem. The following sections show the Web pages you use to configure system parameters.
Set the:
• TFTP server IP address and network mask for performing functions such as software upgrades on page 36
• SNMP parameters on page 38
• Static NAT Entries on 40
• Static MAC Entries on 42
• Static Routes on 44
• system security on page 40
• system mode on page 48 for sessions between the modem and the service provider; select either PPP over ATM or 1483 Bridging/Routing (for Megabit Modem 700F only)
Unless specified otherwise, configuration parameters shown in this section are for example only.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 35
Defining TFTP Parameters
D
EFINING
TFTP P
ARAMETERS
A TFTP server is a device on the LAN from which you can download software updates to your modem. See page 93 for more information on a TFTP server. See page 77 for procedures on how to update the software on your modem.
36
Information Description
IP Address The four octet address of the TFTP server (example: 192.168.0.2)
Net Mask The subnet mask of the TFTP server (example: 255.255.255.0)
File Path
File Name
The path on the TFTP server where the updated software is located.
This may or may not be required depending on the TFTP server configuration. (Example: c:\download\)
The full name of the updated software (example: tiger.bin)
Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 5: Configuring System Settings
1 From the system menu, click general to open the
General System window.
2 Enter the TFTP Server IP address for the device that will be the TFTP server.
3 Enter the TFTP Server Net
Mask (subnet mask) for the TFTP server.
4 Enter the TFTP Server File
Path where the updated software resides on the
TFTP server (leave blank if the file is stored in the root shared folder on the
TFTP server).
5 Enter the TFTP Server File Name of the updated software file.
6 Click Apply to activate the changes.
Example
The illustration above shows the configuration to access a TFTP server with IP address
192.168.0.2 using a subnet mask of 255.255.255.0. The TFTP server has been set up so that
“tiger.bin” has been placed directly inside the shared directory (not in a subdirectory of the shared directory). Therefore, the File Path should be left blank.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 37
Defining SNMP Parameters
D
EFINING
SNMP P
ARAMETERS
The modem has an SNMP agent that allows it to be managed remotely by a Network
Management System (NMS). See page 91 for more information about managing the modem through SNMP. Use the following table for a description of the SNMP parameters:
Information Description
Enable Trap Sending Enables/Disables SNMP messages to the trap server.
Trap Server IP Address The IP address of the server receiving the traps.
Trap Server Net Mask The subnet mask of the server receiving the traps.
Trap Community String The authentication string of the server receiving the traps. The default string is public.
Read-Only Community
String
Read-Write Community
String
The authentication string for only viewing the modem statistics/parameters. The SNMP management station must have the same string in its configuration. The default is public.
The authentication string for viewing the modem statistics and changing parameters. The SNMP management station must have the same string in its configuration. The default is private.
1 From the system menu, click general to open the General
System window.
2 Select Enable Trap Sending if you want the modem to send traps to a server.
3 Enter the Trap Server IP
Address for the server that the traps will be sent to.
4 Enter the Trap Server Net Mask
(subnet mask) for the server that the traps will be sent to from the modem.
You can change the community strings to names you choose. The fields have default names as shown in the screen on page 39 and are case sensitive. If you change the name, however, the community string names must match on both the manager and agent to allow access to the SNMP function.
38 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 5: Configuring System Settings
5 Enter the Trap Community String.
6 Enter the Read-Only Community String .
7 Enter the Read-Write Community String .
8 Click Apply to activate the changes.
Example
The illustration on the previous page shows the configuration for the modem to be managed remotely by a trap server located at 192.168.0.3 using a net mask of 255.255.255.0. In order for the modem to communicate with the trap server, both the modem and trap server must use the same community strings: trap community string set to trapit , read-only community string set to readit , and read-write community string set to writeit .
Megabit Modem 400F, 500L, 600F, and 700F User Manual 39
Defining Static NAT Entries
D
EFINING
S
TATIC
NAT E
NTRIES
Static NAT entries are used in PPP Over ATM mode. They are required only for applications that use TCP/UDP connections initiated from the remote end (WAN). Through the Static NAT
Table , you can map inbound traffic from a remote user to a user or a logical port on your LAN.
You can enter a maximum of 32 static NAT entries. See page 87 for more information on NAT and an example application.
1 From the system menu, click static NAT table to open the Static NAT Table window.
40 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 5: Configuring System Settings
Information
Private IP Address
Private Port
Proxy IP Address
Proxy Port
Remote IP Address
Remote Port
Protocol
Description
The non-registered IP address of a device on the LAN side of your modem.
The logical port number where TCP or UDP traffic will be sent to from the WAN after it is translated from the Proxy Address/Port combination.
The registered (public) IP address mapped to the Private IP Address. Permitted traffic sent to this address from the WAN will end up at the device with the associated Private IP Address. This is the IP address assigned to the WAN port by the service provider.
The logical port number that TCP or UDP traffic will first be sent to from the WAN.
The IP address of the device across the WAN that will be sending the TCP or UDP traffic to your local device with the Private IP Address. Set this to 0.0.0.0 to allow access by any host.
The logical port number of the remote device that will be sending the UDP or TCP traffic. For example, specify 23 for telnet traffic and specify 21 for FTP traffic. This is usually set to 0 to allow any port.
The protocol, UDP or TCP, to be used as the transport between the LAN and the remote user for this static NAT entry.
2 Enter the Private IP Address of the device on the LAN side of the modem.
3 Enter the Private Port number of the device on the LAN side of the modem.
4 Enter the Proxy IP Address that is mapped to the Private IP Address.
5 Enter the Proxy Port number that is mapped to the Private Port.
6 Enter the Remote IP Address of the device across the WAN that will initiate a session. If you do not have the information for the remote user, enter 0.0.0.0.
7 Enter the Remote Port number of the device across the WAN that will initiate a session. For example, specify 23 for telnet traffic and specify 21 for FTP traffic. If you do not have the information for the remote user, enter 0.
8 Select the Protocol from the drop-down menu.
9 Click OK to accept the changes or Cancel to return to the previous screen without changes.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 41
Configuring Static MAC Entries
C
ONFIGURING
S
TATIC
MAC E
NTRIES
When the modem's mode of operation is Bridge/Router RFC 1483 and the modem is configured as a bridge, the modem forwards Ethernet frames based on MAC addresses. Up to 32 static
MAC entries can be added to the modem bridge MAC addres table.
Information
MAC Address
Source Port
Destination Port
Description
The hardware address of a device.
The port receiving the frame.
The port that the traffic will be forwarded out of.
Display Static MAC Entries
1 From the system menu, click static MAC table to open the Static MAC Table window.
2 Observe the list of MAC addresses.
Add a Static MAC Entry
1 From the system menu, click static MAC table to open the Static MAC Table window.
2 Click Add to display the Static MAC Address Entry window.
3 Configure the MAC Address parameters as defined above.
4 Click Apply to add the new data to the list.
Modify a Static MAC Entry
1 From the system menu, click static MAC table to open the Static MAC Table window.
2 Click Select of the address to be changed.
42 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 5: Configuring System Settings
3 Configure the MAC Address parameters as defined above.
4 Click OK to change the existing data to the list.
Delete a Static MAC Entry
1 From the system menu, click static MAC table to open the Static MAC Table window.
2 Click Select of the address to be deleted.
3 Click Delete to remove the selected address.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 43
Configuring Static Routes
C
ONFIGURING
S
TATIC
R
OUTES
Information
Destination
Net Mask
Gateway
Description
The destination IP address of the packet.
The destination subnet mask of the packet.
The next hop IP address the packet will be forwarded to.
Display Static Routes
1 From the system menu, click static route table to open the Static Route Table window.
2 Observe the list of static routes.
Add a Static Route
1 From the system menu, click static route table to open the Static Route Table window.
2 Click Add to display the Static Route Entry window.
3 Configure the static route parameters as defined above.
4 Click Apply to add the new data to the list.
Modify a Static Route
1 From the system menu, click static route table to open the Static Route Table window.
2 Click Select of the route to be changed.
3 Configure the static route parameters as defined above.
4 Click OK to change the existing data to the list.
44 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 5: Configuring System Settings
Delete a Static Route
1 From the system menu, click static route table to open the Static Route Table window.
2 Click Select of the static route to be deleted.
3 Click Delete to remove the selected route.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 45
Configuring System Security
C
ONFIGURING
S
YSTEM
S
ECURITY
System security includes the use of the Admin IP Address and configuring console access through the RS-232 MGMT port.
Admin IP Address
This address determines which devices on the LAN can manage the Megabit Modem. You can select:
• limited access where only one device on the LAN can manage the modem
• general access where any device on the LAN can manage the modem
Perform the following to configure administration for your modem:
1 From the system menu, click general to open the General System window.
2 Select one of the following and enter the appropriate IP address: a When you allow only one device on the LAN to manage the modem, enter the
IP address for that one device in the IP address field.
b When you allow any device on the LAN to manage the modem, enter 0.0.0.0
in the
IP address field.
3 Click Apply to activate the changes.
46
Example: The illustration above shows the modem configuration to allow only the station with the IP address 192.168.0.3 to access the modem on the same LAN.
Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 5: Configuring System Settings
You can change the Admin IP Address for the 600F and 700F by physically connecting to the RS-232 MGMT port.
RS-232 MGMT Port
The RS-232 MGMT Port allows access to several parameters such as the LAN IP settings,
Admin IP Address, and modem reset.
These parameters can be vital to the operation of the modem. You should password protect the
RS-232 MGMT port:
1 Access the console prompt by “ “Using the RS-232
Management Port” on page 80 ”
2 At the main menu, enter 6 .
3 At the Enter Choice prompt, enter the password for
RS-232 port access. If one has not been previously configured, press Enter without entering a password.
4 When a “Please enter the new password:” message appears, type in the new password.
5 When a “Please retype the new password:” message appears, retype the new password.
6 When the “Password accepted” message appears, you have changed the password successfully.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 47
Selecting the System Mode of Operation
S
ELECTING THE
S
YSTEM
M
ODE OF
O
PERATION
System mode indicates the mode of operation between the modem and the service provider for WAN sessions. The only model capable of selecting between system modes is the Megabit
Modem 700F. It can operate in either Bridge/Router RFC 1483 or PPP over ATM mode. It can not operate in both modes simultaneously. The Megabit Modem 400F operates only in
Bridge/Router RFC 1483 mode, while the Megabit Modem 500L and 600F operate only in PPP over ATM mode. This section provides procedures to select the system mode. Then, use the section “Saving the Configuration” on page 28 to effect the system mode of operation.
All sessions that occur simultaneously must be the same system mode: either PPP over ATM or Bridge/Router RFC 1483 . Your service provider will indicate which system mode you can use.
See the “System Mode Worksheet” on page 108 for the system mode that you recorded.
Point-to-Point Protocol (PPP) over ATM is connection-oriented where the session has to be established between the modem and the service provider before data transmission begins.
Bridge/Router RFC 1483 does not establish a session. This mode switches packets based on the data link-layer address for bridging or on the network-layer address for routing.
48 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Use the following procedure to set the system mode:
1 From the system menu, click general to open the
General System window.
2 Select the PPP Over ATM or
Bridge/Router RFC1483 from the drop-down menu as indicated by your service provider.
3 Click Apply .
4 At the Proceed message, click OK .
5 Click reset unit to reset the modem and activate the changes.
6 At the System Reset message, click Proceed .
Chapter 5: Configuring System Settings
Megabit Modem 400F, 500L, 600F, and 700F User Manual 49
Selecting the System Mode of Operation
50 Megabit Modem 400F, 500L, 600F, and 700F User Manual
C
ONFIGURING
PPP S
ESSIONS
6
You can set up PPP sessions between one of these Megabit Modem products and a service provider:
• 500L
• 600F
• 700F (in PPP over ATM mode)
Use these sections, in the order shown, to set up the sessions:
For information about:
Selecting Configuration Parameters
Setting Up the PPP Mode (700F Only)
Configuring the WAN PPP Sessions
Configuring the LAN
Assigning LAN Users to PPP Sessions
Activating and Deactivating Sessions
For these sessions, PPP runs over ATM virtual circuits (VCs).
Go to page:
52
52
53
58
60
62
Megabit Modem 400F, 500L, 600F, and 700F User Manual 51
Selecting Configuration Parameters
S
ELECTING
C
ONFIGURATION
P
ARAMETERS
There are many configuration options for the modem from which you can select. The following options are recommended for enhanced performance.
• DHCP to allow the modem to dynamically serve IP addresses to devices on the LAN
• NAT to map public IP addresses (proxy IP addresses) acquired from the service provider for the WAN sessions to private IP addresses on the LAN
The following table shows possible configurations, with the recommended configuration first:
DHCP
On
Off
On
Off
Off
NAT
On
On
On
On
Off
How IP Address Acquired
Dynamic
Dynamic
Fixed
Fixed
Fixed
S
ETTING
U
P THE
PPP M
ODE
(700F O
NLY
)
For the Megabit Modem 700F only, you can select either PPP over ATM or RFC 1483 bridge/router encapsulation for all sessions you set up. To have all sessions (up to 32) as PPP over ATM mode of operation, do the following:
1 From the system menu, select general .
2 Select PPP Over ATM as the Mode of Operation .
3 Click Apply , then reset the modem.
52 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 6: Configuring PPP Sessions
C
ONFIGURING THE
WAN PPP S
ESSIONS
From the WAN Connections page, you configure parameters that set up communication between the modem and the service provider through PPP over ATM sessions. You can set up the number of sessions indicated for each modem. The number of sessions you can set up is also the number of simultaneous sessions the modem can support:
• 8 sessions for a 500L
• 32 sessions for a 600F
• 32 sessions for a 700F
Access the WAN Connections page and use the following table for reference.
wan connections
Megabit Modem 400F, 500L, 600F, and 700F User Manual 53
Configuring the WAN PPP Sessions
Information
Port
Connection
Status
Description
Designates each WAN port for configuring and monitoring sessions.
Displays the name of the session.
Displays the connection state.
Up - Session is up.
Down - Session is down.
Connecting - Session is setting up.
LogInErr - Login Name/Password not recognized in WAN Configuration.
Disabled - Session Enable checkbox is not enabled in WAN Configuration.
Enabled - Session Enable checkbox is enabled in WAN Configuration.
DslDown - ADSL loop is down.
Add a PPP over ATM WAN Session
You add a PPP WAN session in the PPP Over ATM WAN Configuration window. Use the following reference table and procedure to set up a session.
54 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 6: Configuring PPP Sessions
Information
Connection Name
ATM VPI
ATM VCI
Login Name
Login Password
Primary DNS
Secondary DNS
Address Translation
InBound NAT Default
Continuous Retry
Always ON
Session Enable
Address Assignment
Description
A unique descriptive identifier of the session that also displays in the connection field.
Virtual Path Identifier (VPI) identifies the virtual path that transports ATM cells in a virtual Channel. The range of values is 0 to 15.
Virtual Channel Idenifier (VCI) identifies a virtual channel for each session (each session is a virtual channel). Can be a number from 32 up to a maximum of 253 (on
VPI 0, VCIs 254 and 255 are reserved), with the first 32 (0 through 31) reserved.
Each session requires a Logon Name that is supplied by the service provider.
Each session requires a Logon Password that is supplied by the service provider.
IP address of Domain Name Service device that translates names into numeric IP addresses. This is the device at the service provider that the modem will translate requests.
IP address of a secondary Domain Name System device that translates names into numeric IP addresses.
Enables/disables the use of Network Address Translation (NAT) protocol to translate private IP addresses to public IP addresses assigned to each session.
IP address of the designated NAT default user for inbound traffic. When the NAT engine does not have enough information to do the inbound translation, it forwards the inbound packet to the NAT default user.
Enables/disables the Continuous Retry function of the PPP session establishment process. When Continuous Retry is enabled, the PPP engine continuously retries establishing the PPP session until one of the following is true:
• The PPP session is established successfully. The session status then goes to the
UP state.
• Authentication fails during the handshaking. The session status then goes to the
LogInErr state.
• The PPP session is disconnected. The session status then goes to the DOWN state.
When enabled, the PPP engine establishes/maintains the session even when there are no users assigned to it. When disabled, the PPP engine will not establish or will terminate the session when there are no users assigned to it.
If enabled, the session is active and is ready to establish the PPP link. If disabled, the session is not active.
Determines whether the session IP address is assigned by the service provider
(Dynamic) or entered by the user (Fixed).
Megabit Modem 400F, 500L, 600F, and 700F User Manual 55
Configuring the WAN PPP Sessions
1 To add a session, click Add to display the PPP Over ATM WAN Configuration page.
2 Configure the PPP over ATM parameters shown and defined in the figure and table page 54 .
3 Click OK to create the session or click cancel to cancel the set up of the session.
4 Click Refresh to update the connections window.
56 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 6: Configuring PPP Sessions
Modify a PPP over ATM WAN Session
1 Click Edit next to any Port 1-32 to display the PPP Over ATM WAN Configuration page for that port.
2 Change parameters as needed using the table on page 55 for a description of parameters.
Delete a PPP over ATM WAN Session
1 From the wan menu, click connections to open the WAN Connections window.
2 Select a port and click Edit to open the PPP Over ATM WAN Configuration page.
3 Click Delete to remove the selected session from the list.
4 Click OK to return to connections window or click Cancel to cancel any changes you made to the current configuration.
5 Click Refresh to update the WAN Connections window.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 57
Configuring the LAN
C
ONFIGURING THE
LAN
Devices on your local LAN attach to the modem through its LAN port. Configure parameters for communicating between the local LAN and the modem.
Configure Modem Parameters
Access the General System page to set up modem system parameters.
1 From the lan menu, click general to open the LAN General window. lan general
Information Description
IP
IP Address
IP Net Mask
DHCP
Enable
Internet Protocol. Operates at layer 3 and provides addressing.
The IP address of the modem Ethernet 10/100BASE-T LAN port.
The IP Net Mask address of the modem Ethernet 10/100BASE-T LAN port.
Dynamic Host Configuration Protocol.Used to assign dynamic IP addresses.
Enables/Disables the modem's DHCP server.
Lease IP Address Range Range of IP addresses to lease out.The starting address is one address higher than the LAN IP address. The pool size is 256.
Primary DNS
Default Gateway
IP address of the primary Domain Name System (DNS) device that translates names into IP addresses.
Default router set to the IP address of the LAN port.
58 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 6: Configuring PPP Sessions
2 Enter the IP address and the Net Mask .
3 Click on the box adjacent to the letters DHCP. A check mark in the box indicates the modem's DHCP server is enabled. No check mark in the box indicates the modem's DHCP server is not enabled.
4 Click Apply .
Saving the Configuration
Although you have submitted your new system settings, the parameters are not permanent until you write them to NVRAM. See “Saving the Configuration” on page 28 when you want to save to NVRAM.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 59
Assigning LAN Users to PPP Sessions
A
SSIGNING
LAN U
SERS TO
PPP S
ESSIONS
Map the IP addresses for the LAN-side users to each PPP over ATM session.
In PPP over ATM mode, you can map up to a maximum of 8 users to the sessions you configure for the 500L. In addition, you can map 64 users to the sessions you configure for the 600F and 700F. For example, you could map two users to 32 configured sessions, 64 users to one configured session, or any combination you choose, up to a maximum of 64 users mapped to all the sessions you configure. You can map multiple users to one session; you cannot, however, map multiple sessions to any user.
Enter the IP address or addresses for each user on the LAN that will be assigned to this session.
To access, select User Assignment on the PPP over ATM WAN Configuration page.
Information
Connection Name
User’s IP Address
Inbound NAT Default
Description
The name of the PPP session.
The IP address of the LAN-side user’s machine.
The default device for inbound traffic. This parameter should be configured when setting up the WAN PPP session. See “Configuring the WAN PPP Sessions” on page 53 for more information.
Add a User Assignment
1 From the wan menu, click user assignment to open the WAN User Assignment window.
2 Click Add to display the user assignment Entry window.
3 Configure the user assignment parameters defined in the table above.
4 Click Apply to add the new data to the list. To cancel the process, click Cancel .
60 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 6: Configuring PPP Sessions
Delete a User Assignment:
1 From the wan menu, click user assignment to open the WAN User Assignment window.
2 Select the user assignment to be deleted, then click the Select button of that assignment.
3 Click Delete to remove the selected user assignment.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 61
Activating and Deactivating Sessions
A
CTIVATING AND
D
EACTIVATING
S
ESSIONS
Activate sessions as you want to use them. Also, you may want to de-activate some sessions, while leaving other sessions active. Follow one of the two methods to activate and deactivate sessions.
From the WAN Connections window:
1 From the wan menu, click connections to open the
WAN Connections window.
2 Select the sessions you want active then click
Connect . The modem sets up the session with the service provider.
3 When dynamically acquiring an IP address from the service provider, the session receives the
IP address at this time.
From the Brouter WAN Port Configuration window:
1 From the wan menu, click connections to open the WAN Connections window.
2 Click Edit on the box adjacent to the session to activate or deactivate.
3 To activate the session, place a checkmark in the Session Enable box by clicking in it.
To deactivate the session, clear the checkmark.
4 Click OK to accept the changes.
62 Megabit Modem 400F, 500L, 600F, and 700F User Manual
C
ONFIGURING
B
RIDGING
/R
OUTING
S
ESSIONS
7
You can set up RFC 1483 Bridging/Routing sessions between one of these Megabit Modem products and a service provider:
• 400F
• 700F (in RFC 1483 Bridging/Routing mode)
Use these sections, in the order shown, to set up the sessions:
For information about:
Setting Up the Bridging/Routing Mode (700F Only)
Configuring the WAN Bridging/Routing Sessions
Configuring the LAN
Activating and Deactivating Sessions
Go to page:
64
65
69
71
For these sessions, PPP runs over ATM virtual circuits (VCs).
Megabit Modem 400F, 500L, 600F, and 700F User Manual 63
Setting Up the Bridging/Routing Mode (700F Only)
S
ETTING
U
P THE
B
RIDGING
/R
OUTING
M
ODE
(700F O
NLY
)
For the Megabit Modem 700F only, you can select either PPP over ATM or RFC 1483 bridge/router encapsulation for all sessions you set up. To have all sessions, up to 32, as
Bridging/Routing mode of operation, do the following:
1 From the system menu, select general .
2 Select Bridge/Router RFC1483 as the Mode of Operation .
3 Click Apply , then reset the modem.
64 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 7: Configuring Bridging/Routing Sessions
C
ONFIGURING THE
WAN B
RIDGING
/R
OUTING
S
ESSIONS
From the WAN Connections page, you configure parameters that set up communication between the modem and the service provider through Bridging/Routing sessions. You can set up the number of sessions indicated for each modem. The number of sessions you can set up is also the number of simultaneous sessions the modem can support:
• 32 sessions for a 400F
• 32 sessions for a 700F wan connections
Information
Port
Connection
Status
Description
Designates each WAN port for configuring and monitoring sessions.
Displays the name of the session.
Displays the connection state.
Up - Session is up.
Down - Session is down.
Connecting - Session is setting up.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 65
Configuring the WAN Bridging/Routing Sessions
Add a Bridging/Routing WAN Session
You add a bridging/routing WAN session in the WAN Port Configuration window. Use the following reference table and procedure to set up a session.
Information
Service Name
ATM VPI
ATM VCI
Bridging
Enable
Port Priority
Routing
Enable
IP Address
IP Net Mask
RIP Direction
RIP Version
66
Description
A unique descriptive identifier of the session that also displays in the connection field.
Virtual Path Identifier (VPI) identifies the virtual path that transports ATM cells in a virtual Channel. The range of values is 0 to 15.
Virtual Channel Idenifier (VCI) identifies a virtual channel for each session (each session is a virtual channel). Can be a number from 32 up to a maximum of 253 (on
VPI 0, VDIs 254 and 255 are reserved), with the first 32 (0 through 31) reserved.
The function of filtering/forwarding frames based on layer 2 headers.
Enables/Disables bridging.
The priority of the WAN port.
The function of routing packets based on layer 3 headers.
Enables/Disables routing.
The IP address of the modem's WAN port.
The IP Net Mask address of the modem's WAN port.
The direction the RIP routing information flows.
The version of the RIP protocol.
Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 7: Configuring Bridging/Routing Sessions
1 To add a session, click Add to display the WAN Port Configuration page.
2 Configure the bridging/routing parameters shown and defined in the figure and table page 65 .
3 Click OK to create the session or click cancel to cancel the set up of the session.
4 Click Refresh to update the connections window.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 67
Configuring the WAN Bridging/Routing Sessions
Modify a Bridging/Routing WAN Session
1 Click Edit next to any Port 1-32 to display the Bridging/Router WAN Configuration page for that port.
2 Change parameters as needed using the table on page 66 for a description of parameters.
Delete a Bridging/Routing WAN Session
1 From the wan menu, click connections to open the WAN Connections window.
2 Select a port and click edit to open the WAN Port Configuration page.
3 Click Delete to remove the selected session from the list.
4 Click OK to return to connections window or click Cancel to cancel any changes you made to the current configuration.
5 Click Refresh to update the WAN Connections window.
68 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 7: Configuring Bridging/Routing Sessions
C
ONFIGURING THE
LAN
Devices on your local LAN attach to the modem through its LAN port. Configure parameters for communicating between the local LAN and the modem.
Configure Modem Parameters
Access the General System page to set up modem system parameters.
1 From the lan menu, click general to open the LAN General window. lan general
Information
IP
IP Address
IP Net Mask
Bridging
Enable
Port Priority
Routing
Enable
RIP Direction
RIP Version
Description
Internet Protocol. Operates at layer 3 and provides addressing.
The IP address of the modem Ethernet 10/100BASE-T LAN port.
The IP Net Mask address of the modem Ethernet 10/100BASE-T LAN port.
The function of filtering/forwarding frames based on layer 2 headers.
Enables/Disables bridging.
The priority of the port on a LAN segment.
The function of routing packets based on layer 3 headers.
Enables/Disables routing.
The direction the RIP routing information flows.
The version of the RIP protocol.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 69
Configuring the LAN
Information Description
DHCP
Enable
Lease IP Address Range Range of IP addresses to lease out. The starting address is one address higher than the LAN IP address. The pool size is 256.
Primary DNS IP address of the primary Domain Name Service (DNS) device that translates names into IP addresses.
Secondary DNS
Dynamic Host Configuration Protocol. Used to assign dynamic IP addresses.
Enables/Disables the modem's DHCP server.
Default Gateway
IP address of the secondary Domain Name Service (DNS) device that translates names into IP addresses.
Default router set to the IP address of the LAN port.
2 Enter the IP address and the Net Mask .
3 Click on the box adjacent to the letters DHCP. A check mark in the box indicates the modem's DHCP server is enabled. No check mark in the box indicates the modem's DHCP server is not enabled.
4 Click Apply .
Saving the Configuration
Although you have submitted your new system settings, the parameters are not permanent until you write them to NVRAM. See “Saving the Configuration” on page 28 when you want to save to NVRAM.
70 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 7: Configuring Bridging/Routing Sessions
A
CTIVATING AND
D
EACTIVATING
S
ESSIONS
Activate sessions as you want to use them. Also, you may want to de-activate some sessions, while leaving other sessions active. Follow one of the two methods below to activate and deactivate sessions.
From the WAN Connections window:
1 From the wan menu, click connections to open the
WAN Connections window.
2 Select the sessions you want active then click
Connect . The modem sets up the session with the service provider.
3 When dynamically acquiring an IP address from the service provider, the session receives the
IP address at this time.
From the Brouter WAN Port Configuration window:
1 From the wan menu, click connections to open the WAN Connections window.
2 Click Edit on the box adjacent to the session to activate or deactivate.
3 To activate the session, place a checkmark in the Session Enable box by clicking in it.
To deactivate the session, clear the checkmark.
4 Click OK to accept the changes.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 71
Activating and Deactivating Sessions
72 Megabit Modem 400F, 500L, 600F, and 700F User Manual
V
IEWING
S
TATISTICS
8
You can view status for the ADSL link ( “Viewing ADSL Status” ) and for WAN and LAN statistics ( “Viewing Network Statistics” on page 75 ).
V
IEWING
ADSL S
TATUS
The Megabit Modem 400F, 500L, 600F, and 700F displays the status of the ADSL link.
Resetting ADSL will close off the ADSL loop connection between the modem and the service provider. Active connections will disconnect.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 73
Viewing ADSL Status
Reference the following table for a description of the System Status parameters.
Information
ADSL Link Status
Alarms
Current SNR Margin
Min SNR Margin
Errored Seconds
Unavailable Seconds
Line Attenuation
Data Rate
Description
Shows the status of the ADSL connection between the modem and the service provider.
Identifies conditions on the ADSL link that are reported as an alarm such as: Loss of
Sync (LOS), Loss of Frame (LOF), Loss of Margin (LOM), or Loss of Cell Delineation
(LCD).
Shows the Signal-to-Noise Ratio (SNR) margin (signal clarity), in decibels, at which the modem is currently operating.
Indicates the minimum SNR margin allowed before the ADSL MAR LED on the modem front panel lights.
Shows the total number of seconds that ADSL link errors occurred during a 24-hour period or since the ADSL link was reset.
Shows the total number of seconds the ADSL link was not available for transmission since either the modem was powered on or the ADSL statistics were last cleared.
Shows the loss of signal power in the transmission in decibels.
Shows the rate of data transmission in kilobits per second (kbps).
1 From the adsl menu, click status to open the ADSL Status window.
2 Monitor the ADSL Status.
3 Click Refresh to update the statistics or Clear to clear the statistics.
74 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 8: Viewing Statistics
V
IEWING
N
ETWORK
S
TATISTICS
The Megabit Modem 400F, 500L, 600F, and 700F display status for the LAN and WAN links.
From the Main Menu , select Statistics to display the Statistics Menu .
LAN Statistics
The Megabit Modem 400F, 500L, 600F, and 700F displays status for the LAN.
View the following LAN information:
Information
Rx Packets
Tx Packets
Dropped Packets
Collisions
Description
The total number of packets received at the LAN interface.
The total number of packets transmitted out the LAN interface.
The total number of packets discarded by the modem.
The total number of packets that have collided on the LAN segment.
1 From the statistics menu, click LAN to open the LAN Statistics window.
2 Monitor the LAN statistics.
3 Click Refresh to update the statistics or Clear to clear the statistics.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 75
Viewing Network Statistics
WAN Statistics
The Megabit Modem 400F, 500L, 600F, and 700F displays status for the WAN.
View the following WAN information:
Information
Rx Packets
Tx Packets
Bad Packets
Description
The total number of packets received at the WAN interface.
The total number of packets transmitted out the WAN interface.
The total number of errored packets detected at the WAN interface.
1 From the statistics menu, click WAN to open the WAN Statistics window.
2 Monitor the WAN statistics.
3 Click Refresh to update the statistics or Clear to clear the statistics.
76 Megabit Modem 400F, 500L, 600F, and 700F User Manual
M
AINTENANCE AND
T
ROUBLESHOOTING
9
M
AINTENANCE
You can update software by specifying a device on your LAN where you will place new software for the update (see “Defining TFTP Parameters” on page 36 ). Then, use the procedure
“Updating Software” on page 77 to download new software from the TFTP device to the
Megabit Modem 400F, 500L, 600F, and 700F.
Through the RS-232 MGMT port on the Megabit Modem 600F and 700F, you can change the modem LAN port IP address and network mask, the default gateway IP address, and the IP address for the device on the LAN that can administer the modem (see page 80 ).
Updating Software
Updating software images in binary format require the use of a TFTP server. The TFTP server stores the files which will be downloaded to your modem. This guide assumes that you have correctly set up your TFTP server on the same subnet as the modem and that the appropriate files are available to download.
When updating software remotely, file corruption is a major concern. For example, if an image file altered during the TFTP process the modem may not restore its connections after a system reset. To eliminate such possibilities, the modem software performs a CRC check for the integrity of each file after it has been downloaded.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 77
Maintenance
Access the General System page to configure the TFTP parameters.
Reference the following table for a description of the TFTP parameters.
Information
IP Address
Net Mask
File Path
File Name
Description
The four octet address of the TFTP server (example: 192.168.0.3).
The subnet mask of the TFTP server (example: 255.255.255.0).
The path on the TFTP server where the updated software is located. This may or may not be required depending on the TFTP server configuration. (Example:
c:\download\)
The full name of the updated software (example: tiger.bin).
1 From the system menu, click general to open the General System window.
2 Enter the TFTP Server IP address .
3 Enter the TFTP Server Net Mask (subnet mask) for the TFTP server.
4 Enter the File Path where the updated software resides on the TFTP server (if necessary).
5 Enter the File Name of the updated software file.
78 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 9: Maintenance and Troubleshooting
6 Click Apply to activate the changes.
Before initiating a software upgrade, ensure that all files are in the directory you specified on the TFTP server when you configured system parameters.
7 Click upgrade software to begin the file transfer.
8 Click Proceed to confirm the file transfer process.
9 Wait for the file to download.
10 Click Yes to restart the modem.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 79
Maintenance
Using the RS-232 Management Port
Use the RS-232 management port only when you must manually change the IP address and subnet mask. Also, use the port if you do not remember the administrative IP address you entered on your modem.
The Megabit Modem 400F and 500L do not have an RS-232 port.
1 Connect the modem to a PC as shown below.
PC, hub or other network device
Wall jack with DMT ADSL service
Switch
MD
I M
DI-X
10BASE-T
10/100BASE-T port
RS-232 MGMT port
(600F and 700F only)
RS232
M
GMT
ADSL port
Power connector
DS
L
PO
80 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 9: Maintenance and Troubleshooting
2 Configure these communication settings (if using terminal emulation, select ANSI):
• 9600 baud
• no parity
• 8 data bits
• stop bit
• flow control off
3 Display the following screen:
Pairgain Megabit Modem 700F Setup Menu
===========================================
BSP version:
SW version:
3.0.0(1)
3.2.0
IP address:
IP network mask:
192.168.0.1
255.255.255.0
Default gateway IP address: 0.0.0.0
Admin IP address: 0.0.0.0
===========================================
(1)Enter IP address
(2)Enter IP network mask
(3)Enter default gateway IP address
(4)Enter IP Admin address
(5)Reset modem
(6)Change password
(7)Logout
>
Megabit Modem 400F, 500L, 600F, and 700F User Manual 81
Maintenance
4 Enter any of these parameters at the prompt:
• Type 1 then enter the LAN IP address for the modem (LAN port which is the
10/100BASE port).
• Type 2 then enter the LAN IP network mask for the modem.
• Type 3 then enter the Default gateway IP address.
• Type 4 then enter the IP address for a device on the LAN that will manage the modem.
5 Type 5 to reset the modem after you change the LAN IP address and the LAN IP network mask.
82 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 9: Maintenance and Troubleshooting
S
ETTING
U
P THE
PC
TO
R
EQUEST AN
IP A
DDRESS
The modem, as a Dynamic Host Configuration Protocol (DHCP) server, provides an IP address dynamically to devices on the LAN. When you choose to use DHCP for the modem to serve
IP addresses to the devices on your LAN, ensure that the TCP/IP properties are set to automatically obtain the IP address from the modem.
The following is an example of how to set up the PC using Microsoft ® Windows ® 98. If you use an operating system other than Windows 98, refer to the appropriate operating system user documentation.
1 Open the Control Panel window by clicking Start , Settings , Control Panel .
2 Double-click the Network icon.
3 From the Configuration tab, double-click TCP/IP .
4 Select Obtain an IP address automatically .
5 Click OK to close the TCP/IP Properties window.
6 Click OK to close the Network window.
7 Click OK to restart the computer.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 83
Troubleshooting
T
ROUBLESHOOTING
If this occurs: Try this:
PC or hub not communicating with the modem
• Check the LINK LED. If it is off, check the cabling to the 10/100BASE port and to the hub or the NIC card in the PC to ensure it is secure.
• Check the position of the MDI/MDI-X switch. Set the switch to MDI when connecting to a PC. Set the switch to MDI-X when connecting to a hub or router.
• Check that you are using a Web browser (Netscape or Internet Explorer) Version 4.0 or newer.
• Check that you have a TCP/IP protocol stack installed on your PC.
• If this is the initial installation, check that you set the IP address on your PC to obtain an
IP address automatically. Make sure you have configured the LAN IP address of the modem to an address that is on the correct subnet. See “Setting Up the PC To Configure the Modem” on page 18 .
• You configured the LAN IP address of the modem to an address that is not on the same subnet.
• Check the NIC card installation for correct IRQ, drivers, and adapter setup. See appropriate documentation for the NIC card.
If none of the above corrects your problem, contact your service provider.
SYNC ADSL LED Contact the service provider when the LED remains off indicating that the modem is not detecting a transceiver at the far end. Flashing green indicates that the modem is attempting to bring up the link. Solid green indicates that the loop is up.
The modem synchronizes at a minimum transmission rate of 64 kbps. The modem rate adapts in increments of 32 kbps.
MARGIN ADSL
LED lights green
Contact the service provider when the LED is off indicating that the margin is below that specified by the service provider.
LAN TX and RX
LEDs are not on
ADSL TX and RX
LEDs are not on
Check that the LINK LED is on. If it is on, you are simply not transmitting or receiving data on the LAN 10/100BASE-T port. If the LINK LED is not on, check the section “PC or hub not communicating with the modem” in this table.
Check that the SYNC LED is on. If it is on, you are simply not transmitting or receiving data on the WAN ADSL port. If, the SYNC LED is not on, contact your service provider.
84 Megabit Modem 400F, 500L, 600F, and 700F User Manual
T
ECHNICAL
R
EFERENCE
10
This chapter provides technical information about how your modem transmits data between users on your LAN and a service provider over the WAN.
T
RANSMISSION ON THE
W
IDE
A
REA
N
ETWORK
ATM over DMT ADSL is the technology that provides the high-speed transmission between the modem and the service provider. This transmission occurs over a single-pair telephone line.
The following sections describe these technologies.
ADSL
Asymmetric Digital Subscriber Line (ADSL) is the technology used to transmit data between the modem and service provider at the physical layer. It provides data at asymmetric rates so that downstream traffic from a service provider to you is faster than upstream traffic from you to the service provider. The downstream transmission rate is up to 7.552 Mbps, while the upstream rate is up to 928 Kbps. Included in the ADSL bandwidth is analog POTS.
Discrete Multitone (DMT) is the line coding used for ADSL. Basically, it divides the bandwidth into subchannels. Some of the subchannels are reserved for analog POTS. The other subchannels are allocated to upstream and downstream traffic. Within the upstream and downstream subchannels, some subchannels are used for management and performance functions.
DMT ADSL provides rate-adaptive transmission that allows the service provider to deliver you the best transmission rate determined by distance and line conditions.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 85
Transmission on the Wide Area Network
ATM
Asynchronous Transfer Mode (ATM) is a technology that can simultaneously transmit voice, data, and video over ADSL. ATM uses fixed-size cells that transmit over a preestablished connection called a Permanent Virtual Circuit (PVC). Quality of Service provides UBR.
ATM cells are 53 bytes that comprise a 5-byte header and 48-byte payload. The header includes the Virtual Path Identifier (VPI) and Virtual Channel Identifier (VCI) that you entered when you configured each session. The VPI and VCI provide the virtual connection between the modem and the service provider. The VPI identifies the Virtual Path (VP) that transports ATM cells in a Virtual Channel (VC). The Megabit Modem 400F, 500L, 600F, and 700F has 32 VCs in the
VP, which provides the 32 sessions.
Mapping an ATM Session
Your service provider will give you a VCI and VPI address for each session. The VCI address for each session (each session is a VC) can be a number from 32 up to a maximum of 255, with the first 32 numbers (0 through 31) reserved. The VCI value for each VC must be unique for each of the 32 sessions. The VPI value must always be 0.
86 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 10: Technical Reference
S
YSTEM
M
ODE
E
NCAPSULATION
Point-to-Point Protocol (PPP) over ATM or RFC 1483 Bridging/Routing are the two protocols you can use to encapsulate data for transport across the ADSL WAN. The following sections describe these protocols.
PPP
PPP runs over ATM virtual circuits. PPP exists between the hardware layer and the network-layer interface protocols. It is a widely used protocol for establishing connections on the WAN. PPP provides the set up and release of connections for each session. PAP/CHAP provide the authentication for the PPP sessions.
In PPP over ATM mode, you can map private IP address LAN users to PPP sessions using RFC
1631 Network Address Translation protocol.
PAP/CHAP Authentication Security
Password Authentication Protocol (PAP) and Challenge-Handshake Authentication Protocol
(CHAP) are two ways to authenticate PPP sessions. PAP and CHAP are both offered since some systems support only PAP. With PAP, the modem sends authentication requests to the service provider and authentication occurs only once during the life of the link.
With CHAP, the service provider returns an authentication challenge to the modem during authentication. CHAP can be renegotiated during the life of the link. Also, both the modem and the service provider must support clear text versions of the password. The CHAP host field must be the same on both ends of the session.
NAT
RFC 3022 Network Address Translation (NAT) includes two operations. They are Basic NAT and Network Address Port Translation (NAPT).
Basic NAT only deals with IP addresses. Therefore, it is a one-to-one private IP address to public IP address (proxy address) mapping. Basic NAT allows you to hide your private addresses behind the public IP addresses assigned to a session. Corporations that need flexibility using different IP address ranges can benefit from this operation, as the private IP addresses will remain the same when the public IP addresses are reassigned.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 87
System Mode Encapsulation
NAPT does not have the limitation of using only the IP address in the translation. It also uses
TCP/UDP ports. It is a method that allows multiple IP addresses and their TCP/UDP ports to be translated into one IP address and its ports. A good candidate for NAPT is a small office with multiple hosts but one public IP address. In this case, NAPT allows the entire office to use the public IP address to communicate out of the private network.
An example of NAPT in this small office envionment is the RealPlayer™ application. The
RealPlayer (client at the office) initiates a TCP connection to the RealServer™ on the Internet, which then initiates a UDP connection back to RealPlayer. RealPlayer can then tell the server to use a specific UDP port for the UDP connection. The user should set up a static NAT entry for the UDP connection for RealPlayer to work properly through NAPT.
Bridging
You can configure the Megabit Modem 400F and 700F as a bridge to forward Ethernet data based on MAC addresses.
MAC Layer Bridging
A bridge moves information across a network from a source to a destination at the data link layer
(of an OSI reference model). The information is sent to a physical address known as a Media
Access Control (MAC) address. The Megabit Modem 400F and 700F provide transparent
Ethernet MAC-layer bridging.
The bridge learns up to 1024 addresses. Additionally, when you configure the modem, you can add 32 static addresses through the static MAC address configuration page.
Spanning Tree Protocol
The Megabit Modem 400F and 700F support 802.1d Spanning Tree protocol which eliminates loops in a LAN topology by partitioning out redundant links between LAN segments. This ensures that there is only one path, or link, between any two nodes on the network. If this link goes down, Spanning Tree re-enables partitioned links to create a new loop-free topology if possible.
An example of the active topology is shown on page 89 . In the example, the spanning tree algorithm partitions out the bridge from LAN A to LAN B, and creates the link from ENET2 to Bridge 5.
88 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Example LAN Physical Network
This physical configuration is valid only when used with
Spanning Tree to eliminate loops.
LAN
Bridge 1
ENET 1
Bridge 4
E
N
E
T
2
Bridge 2 Bridge 3
LAN
Bridge 5
ENET 3
Loop-free Topology
Using Spanning Tree Protocol
LAN A
Bridge 1
ENET 1
Bridge 4
E
N
E
T
2
Bridge 2 Bridge 3
LA N
Bridge 5
B
ENET 3
Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 10: Technical Reference
89
System Mode Encapsulation
Routing
You can configure the Megabit Modem 400F and 700F router to route Ethernet-encapsulated
IP datagrams based on IP addresses. Use Routing Information Protocol (RIP) to automatically identify the route from the session on the Megabit Modem 400F and 700F to the destination.
You can specify the direction and version of RIP that allows other routers to update their routing tables automatically (for example, information on how many hops between destinations). The version of RIP you select for the session must match the version supported by the service provider. Versions RIP1 and RIP-1 compatible are used for broadcast. RIP Version 2 is used for multicast.
The router also learns addresses. In addition to the addresses it learns, you can add 32 static route entries on the LAN Brouter configuration page. Through the static IP routing feature, you can configure the Megabit Modem 400F and 700F as an IP router with statically programmed route entries. You can enable this function to provide broadcast filtering and to prevent eavesdropping by specifying multiple destination gateways. When static IP routing is enabled, you can access only specific remote IP subnets or hosts.
Since IP routers make forward or filter decisions based on the network-layer IP address instead of the MAC hardware address, MAC-level broadcast frames are prevented from reaching unwanted destinations in the network.
When setting parameters for an external router, configure a Static Route entry in any of the external routers that may have been specified as a Default Router or as a Gateway. This implementation prevents other parties from discovering routes through eavesdropping. The format of this entry varies among the various router vendors, but is typically in the form of
"Destination," "Mask," and "Gateway," where the "Destination" is the remote IP Subnet or host address, and "Gateway" is the IP address of the modem on the same subnet as the external router.
Encapsulation for RFC 1483 Bridging/Routing
Most users select LLC, which allows you to run multiple protocols over the VC. An encapsulation header identifies the types of protocol being carried in the transmission (for example, IP). VC-MUX allows only one protocol to run over the VC. The type of protocol must be negotiated between the modem and the service provider prior to the transmission. Because there is only one protocol allowed, the header is not required.
90 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 10: Technical Reference
M
ANAGEMENT
P
ROTOCOLS
SNMP is used to configure system and bridge parameters, to monitor statistics, and to perform advanced management tasks.
SNMP
This management protocol specifies how to send information between a network management system (NMS) and managed devices on a network. Managed devices run a program called an agent. The agent interprets SNMP requests and responds to them. The NMS communicates with the agents in the managed devices to:
• set configuration
• get configuration
• get status
A Management Information Base (MIB) defines the configuration and status parameters.
The Internet Engineering Task Force (IETF) specifies standard MIBs for certain types of devices, ensuring any NMS can manage them. Additionally, vendors can issue proprietary
MIBs for their devices to fit specific needs.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 91
Management Protocols
MIB and Trap Support
Each managed device has configuration, status, and statistical information that defines its functionality and operational capabilities. These elements make up the MIB for the device being managed. The MIB defines the kind of information an NMS can retrieve from a managed device, and the settings an NMS can control in a managed device.
Model Number supports the following MIBs:
• RFC 1213: "Management Information Base for Network Management of TCP/IP-Based
Internet: MIB-II" Supported groups: system, interfaces, IP, ICMP, UDP, and SNMP groups.
• RFC 1215: "A Convention for Defining Traps for Use with the SNMP" Supported groups:
ColdStart, linkUp, linkDown, and authenticationFailure traps. Link status traps are sent for events related to Ethernet.
• RFC 1493: "Definition of Managed Objects for Bridges" Supported groups: Base,
Spanning Tree, and transparent bridging groups. The Spanning Tree MIB can only be accessed if the Spanning Tree protocol is enabled.
• ADSL MIB
• ATM MIB
• ADC Agent MIB
• ADC Tiger MIB
92 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Chapter 10: Technical Reference
DNS R
ESOLUTION
If you want Domain Name System (DNS) resolution, you need to specify the IP address for a device to be the DNS resolver. You can also specify another IP address to designate a second device for a secondary DNS resolver. The DNS device maps human-readable addresses to IP addresses. A human-readable address is one such as maggie.copro.company.com
that contains a host name and domain. The DNS resolver maps that name to the IP address that is a numeric (four octet) value such as 192.168.30.25.
In previous versions of code, the provisioning of more than one PPP over ATM session required the manual configuration of DNS server addresses on the host computers. Changing from one session to another session also required manual configuration. This is because different sessions required different DNS server addresses, and the modem did not have a way to handle the DNS server address on a session by session basis.
DNS Relay solves this problem. With DNS Relay, the DNS server addresses are configured on a per session basis and all the hosts on the LAN have their DNS server addresses configured to the same address, the LAN IP address of the modem. Therefore, multiple hosts in different sessions configured for DHCP can receive the modem’s LAN IP address as the DNS server address. When a host sends out a DNS message to the modem, the modem looks up the source
IP address in the User Assignment Table to determine the host’s session and the DNS server for that session. The modem replaces the destination IP address of the frame with the DNS server address configured for that session and sends the frame on its way.
TFTP S
ERVER
Trivial File Transfer Protocol (TFTP) is the TCP/IP standard for file transfer. It provides the service with minimal capability and minimal overhead. TFTP uses UDP for connectionless delivery.
A TFTP Server is a device on the network which stores files that other IP devices can access for file transfer using the TFTP protocol. The Megabit Modem is one of these IP devices and uses theTFTP server to download updated software in binary format.
Typical TFTP servers are not dedicated only for file transfer. Frequently, Microsoft Windows desktops are used to store the binary files. To create a TFTP server, several shareware programs are available through the Internet. Once you have selected and installed the TFTP server software, configure it to share a directory containing the binary files. To configure the Megabit
Modem to access the TFTP server, see Chapter 9 on page 77 .
Megabit Modem 400F, 500L, 600F, and 700F User Manual 93
TFTP Server
94 Megabit Modem 400F, 500L, 600F, and 700F User Manual
S
PECIFICATIONS AND
D
ATA
A
WAN I
NTERFACE
S
PECIFICATIONS
ADSL (Asymmetric Digital Subscriber Line)
Maximum transmission rate:
Downstream
Upstream
7.552 Mbps
928 kbps
Minimum transmission rate to sync 64 kbps
Rate-adaptive data rate resolution 32 kbps increments
Signal Format DMT (Discrete Multitone) line code
Connector RJ-11
ATM (Asynchronous Transfer Mode)
ATM Adaptation Layer
ATM Layer
Cell Format
Virtual Circuit type
Maximum Virtual Circuits
AAL5 (ITU I.363.5) - Supports encapsulation and de-encapsulation of AAL5 Protocol Data Units (PDUs) for convergence. Segmentation and Reassembly (SAR) layer segments and reassembles AAL5 PDUs into ATM cells that are
48 byte SAR-PDUs.
Attaches or strips the 5-byte header to the 48-byte SAR-PDU.
Performance is a maximum line rate of 17,812 cells per second downstream and 2,189 cells per second upstream.
Format complies with ITU I.361 ATM cell format. Cell delineation complies with ITU I.432 Cell Delineation and HEC. Cells are fixed length (53 bytes), including 5 bytes of header and 48 bytes of payload. Included in the header are the VPI and VCI number.
Permanent Virtual Circuit (PVC) per ATM forum UNI version 3.1
32 virtual circuits that can simultaneously connect to service providers for sessions encapsulated either as PPP or RFC 1483
Bridging/Routing
Megabit Modem 400F, 500L, 600F, and 700F User Manual 95
Encapsulation
E
NCAPSULATION
Selection of an encapsulation protocol from the modem to the service provider occurs on a per virtual circuit (session) basis. For example, for the 700F you can configure 32 sessions for
PPP over ATM mode and configure another 32 sessions for RFC 1483 mode. However, you can activate only PPP over ATM sessions or RFC 1483 sessions at a time. You cannot concurrently activate PPP sessions and RFC 1483 sessions for all Megabit Modems.
When you activate RFC 1483 system mode, you can select WAN encapsulation as VC-MUX for some sessions and LLC for other sessions.
PPP
Link Control Protocol
(LCP)
Network Control
Protocol (NCP)
Authentication
(PAP/CHAP)
Network Address
Translation
Provides a phase of the PPP negotiation by setting up the physical link (RFC
1661).
Occurs after LCP, negotiating parameters for each network interface and uses
Internet Protocol Control Protocol (IPCP) which is defined in RFC 1332.
Provides authentication of PPP sessions for security through Password and
Challenge-Handshake Authentication Protocols (RFC 1994).
Network Address Port Translation (NAPT) maps LAN side private IP address to the public IP address assigned to the 32 virtual channels (RFC 1631). You can map to two private addresses to each of the 32 sessions for a total of 64 addresses.
Routing
Routing Protocol
Encapsulation
Static Routes
Address Resolution
Supports RFC 1724 Routing Information Protocol (RIP and RIP Version 2).
Supports Logical Link Control (LLC) or VC-based multiplexing (RFC 1483).
Supports up to 32 static routes
Supports Address Resolution Protocol (ARP) over the LAN port (RFC 826)
Bridging
Bridging and Address
Learning
Encapsulation
Spanning Tree
Implements a transparent learning bridge with a bridging table of 1024 entries.
Supports Logical Link Control (LLC) or VC-based multiplexing (RFC 1483).
Provides Spanning Tree support per IEEE 802.1d.
96 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Appendix A: Specifications and Data
LAN I
NTERFACE
Connector RJ-45 Ethernet with auto-detecting10/100BASE-T (IEEE 802.3I for 10BASE-T and
IEEE 802.3u for 100BASE-T)
P
HYSICAL
S
PECIFICATIONS
Height
Width
Depth
Weight
1.2 inches (3.1 cm)
6.9 inches (17.5 cm)
9.2 inches (23.4 cm)
2.2 pounds (1.0 kg)
P
OWER
S
UPPLY
Voltage 100 to 240 Vac
Frequency 50 to 60 Hz
Current 0.3 Amps
E
NVIRONMENTAL
Temperature 32° to 122 °F (0° to 50°C)
Relative Humidity up to 95% non-condensing
Altitude between -200 and 13,000 feet (-61 to 3.962 meters)
Megabit Modem 400F, 500L, 600F, and 700F User Manual 97
Compliance
C
OMPLIANCE
Emissions and Immunity
Compliance
Operations and Safety
Compliances
• FCC Part 15, Subpart B, Class A
• CENELEC/ETSI (IEC 555 and 801)
• CE (EN 55022 and EN 50082-1)
• cUL (UL-1950)
• CE (EN 60950)
RFC
S
• RFC 1483 Multiprotocol Encapsulation over ATM (Bridging/Routing)
• RFC 2364 PPP Encapsulation over ATM
• RFC 1661 for PPP LCP
• RFC 1994 for PAP/CHAP Authentication
• RFC 1631 IP Network Address Translator (for NAPT)
• RFC 1350 for TFTP client
• RFC 2131 and RFC 2132 for DHCP server and relay protocols (supported only in RFC 1483
Bridging mode) and extensions, respectively
MIB
S
• TR-006 ADSL Forum ADSL Line MIB
• T1.413 section 8.2
98 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Appendix A: Specifications and Data
R
ATE VS
. R
EACH
Payload Rate vs Reach on 24 AWG (0.4 mm) with 4dB Margin in Low Noise Environment
10.000
1.000
0.100
0.010
Reach in Kilofeet
Payload Rate vs Reach on 26 AWG (0.5 mm) with 4dB Margin in Low Noise Environment
10.000
Downstream
Upstream
1.000
0.100
0.010
Reach in Kilofeet
Megabit Modem 400F, 500L, 600F, and 700F User Manual
Downstream
Upstream
99
Hardware
H
ARDWARE
The following provides additional information about Megabit Modem 400F, 500L, 600F, and
700F such as the installation kit and modem connectors pinouts.
Installation Kit
The following items are included in the installation kit and are used to install the Megabit
Modem 400F, 500L, 600F, and 700F as shown in Chapter 3 on page 18 .
Part Description Function
Rubber feet Four black rubber feet
Grey cable Silver-satin phone cord with 4-pin modular plugs (straight-through)
Black cable CAT 5, cable with 8-pin modular plugs
(straight-through)
Power cable Power supply with optional power cord (this item is ordered dependent on the type of power supply and cord required for your location)
Screws
Grey cable and adapter
Two 6x 1 /
2
-inch sheet metal screws
Flat cable with RJ-45 connectors and a DB-9 to RJ-45 adapter.
Attaches to the base of the modem.
Connects the modem ADSL connector to the wall phone jack for access to the Internet.
Connects the modem 10/100BASE-T connector to the LAN through a hub or to a PC NIC.
Connects the modem POWER connector to the local power source.
Installs into a wall for wall-mounting modems.
Connects the RS-232 MGMT port to an ASCII terminal or a PC running terminal emulation software. Adapter assembly connects to a DB-9 connector on the PC. Then, one RJ-45 connector installs in the adapter and the other connector into the console port on the modem.
100 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Appendix A: Specifications and Data
Connector Pinouts
You may choose to make your own cables for the ADSL RJ-11 connector and the
10/100BASE-T Ethernet connector on the rear of the modem. The following sections provide the pinout information you need.
ADSL Port
The following table shows the signal on each pin for the ADSL port. The connector for this interface is an RJ-11. See page 18 for the location of this port.
Pin
3
4
1
2
5
6
Signal
Not used
No connection
Ring
Tip
No connection
Not used
10/100BASE-T Port
The following table shows the signal on each pin when the switch is in either the MDI or the MDI-X position for the 10/100BASE-T port. The connector for this interface is an RJ-45.
See page 18 for the location of this port.
MDI
7
8
5
6
3
4
1
2
MDI-X
7
8
5
2
1
4
3
6
Signal Description
TX+
TX-
Transmit Data (+)
Transmit Data (-)
RD+ Receive Data (+)
Not used Not used
Not used Not used
RDReceive Data (-)
Not used Not used
Not used Not used
Megabit Modem 400F, 500L, 600F, and 700F User Manual 101
Hardware
102 Megabit Modem 400F, 500L, 600F, and 700F User Manual
T
ECHNICAL
A
SSISTANCE
AND
R
ETURNS
B
This chapter describes how to contact ADC for technical support.
T
ECHNICAL
S
UPPORT
Technical support is available 24 hours a day, 7 days a week by contacting the ADC Wireline
Systems Division Customer Service Engineering Group at one of the following numbers:
• Telephone: 800.638.0031
714.730.3222
• Fax: 714.832.9924
• Email [email protected]
A Customer Service Engineer answers technical assistance calls Monday through Friday between 7:30 AM and 5:30 PM, Pacific Time, excluding holidays. At all other times, an on-duty
Customer Service Engineer returns technical assistance calls within 30 minutes.
W
ORLD
W
IDE
W
EB
Avidia product information can be found at http://www. adc.com using any web browser.
A
DVANCE
R
EPLACEMENT
Any product determined by ADC not to comply with the applicable warranty within 30 calendar days from the date of shipment to the Buyer, or as otherwise authorized, are eligible for advance replacement free of charge. A replacement product will be shipped to the Buyer within 24 hours of ADC’s receipt of notification from the Buyer.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 103
Billing
If products returned to ADC for advance replacement are not received by ADC within 30 calendar days of shipment of the replacement product or if no trouble is found (NTF) as determined by ADC, the Buyer will be responsible for payment of the cost of the replacement product.
B
ILLING
ADC’s repair of products returned for repair, replacement, or credit, whether in warranty or out of warranty, which is found to be damaged due to customer negligence or which has had parts removed will be billed on a time and material basis.
In the event that the returned equipment is not covered by warranty, ADC will contact the customer with the estimated repair or replacement charges and obtain customer disposition of the product if a purchase order has not been provided.
Equipment returned for repair or replacement is subject to a $70 per unit NTF (no trouble found) charge in the event that diagnostic evaluation reveals no evidence of functional failure or physical defects.
104 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Appendix B: Technical Assistance and Returns
R
ETURNS
To return equipment to ADC Wireline Systems Division:
1 Locate the number of the purchase order under which the equipment was purchased. You will need to provide this number to ADC Wireline Systems Division Customer Service to obtain a return authorization.
2 Call or write ADC Wireline Systems Division Customer Service to ask for a Return
Material Authorization (RMA) number and any additional instructions. Use the telephone number, fax number, or email address listed below:
• Telephone: 800.370.9670
• Fax: 714.832.9923
• Email Address: [email protected]
3 Include the following information, in writing, along with the equipment you are returning:
• Company name, address, telephone number, and the name of a person Customer
Service can contact regarding this equipment.
• The purchase order number provided to Customer Service when the RMA number was requested.
• A description of the equipment, as well as the number of units that you are returning.
Be sure to include the model and part number of each unit.
• The shipping address to which Customer Service should return the repaired equipment.
• The reason for the return:
– The equipment needs an ECO/ECN upgrade.
– The equipment is defective.
If the equipment is defective, please tell us what you observed just before the equipment malfunctioned. Be as detailed in your description as possible.
– If there is another reason for returning the equipment, please let us know so we can determine how best to help you.
4 Pack the equipment in a shipping carton.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 105
Returns
5 Write the ADC Wireline Systems Division address and the Return Material Authorization
Number you received from Customer Service clearly on the outside of the carton and return to:
ADC Wireline Systems Division
14352 Franklin Ave.
Tustin, CA 92780-7013
Attention: RMA (Number)
All shipments are to be returned prepaid. ADC will not accept any collect shipments.
106 Megabit Modem 400F, 500L, 600F, and 700F User Manual
C
ONFIGURATION
W
ORKSHEETS
C
This appendix provides worksheets where you can record your system settings and system sessions configuration information prior to executing the procedures in Chapter 4 through
Chapter 8 .
The information that you need to configure a modem is listed below. Contact your service provider for this information. Use the worksheets in this appendix to record your configuration information. When you begin configuration of the modem in Chapter 4 , the procedures refer you to the proper table so you can use the information you have recorded.
C
ONFIGURATION
I
NFORMATION
1 System mode (WAN connection for the sessions between the modem and the service provider): PPP over ATM or Bridge/Router RFC 1483?
2 If Bridge/Router:
• Configure as a Bridge only, as a Router only, or as a Bridge and Router.
• If Bridge or Router, choose LLC or VC-MUX encapsulation.
• If Router, choose version of and direction for RIP (RIP1, RIP2, or RIP1 compatible).
• If Bridge, select whether or not to enable Spanning Tree.
3 If PPP over ATM and using CHAP, identify CHAP authentication name.
4 Session address for Ports 1 through 32 (WAN configuration):
• ATM VPI and ATM VCI (specified for each session)
• when using fixed IP addresses, IP address specified for each session by the service provider
• for PPP system mode, Login Name and Login Password (specified for each session)
Megabit Modem 400F, 500L, 600F and 700F User Manual 107
Configuration Information
System Mode Worksheet
Contact Service Provider:
Choose one for system mode:
• Bridging/Routing
• PPP
If Bridging/Routing, select one:
• Bridge and Router?
• Bridge only?
• Router only?
If Bridging and/or Routing, choose
Encapsulation method?
• LLC
• VC-MUX
When Routing with RIP, select:
• RIP direction
• Version of RIP
When Bridging, Enable Spanning Tree?
(YES OR NO)
Configuration Type
__________________________
__________________________
__________________________
__________________________
__________________________
__________________________
108 Megabit Modem 400F, 500L, 600F and 700F User Manual
Appendix C: Configuration Worksheets
CHAP Host Name Worksheet
From Service Provider Configuration Information
If PPP over ATM and using
CHAP for authentication, enter
CHAP host name for each session
CHAP Host Name CHAP Host Name
1 __________________________ 17 __________________________
2 __________________________ 18 __________________________
3 __________________________ 19 __________________________
4 __________________________ 20 __________________________
5 __________________________ 21 __________________________
6 __________________________ 22 __________________________
7 __________________________ 23 __________________________
8 __________________________ 24 __________________________
9 __________________________ 25 __________________________
10 __________________________ 26 __________________________
11 __________________________ 27 __________________________
12 __________________________ 28 __________________________
13 __________________________ 29 __________________________
14 __________________________ 30 __________________________
15 __________________________ 31 __________________________
16 __________________________ 32 __________________________
Megabit Modem 400F, 500L, 600F and 700F User Manual 109
Configuration Information
WAN Configuration Worksheet
From Service Provider
ATM Configuration
(VPI/VCI for each session)
VPI
Configuration Information
VCI
1 __________________________ 1 __________________________
2 __________________________ 2 __________________________
3 __________________________ 3 __________________________
4 __________________________ 4 __________________________
5 __________________________ 5 __________________________
6 __________________________ 6 __________________________
7 __________________________ 7 __________________________
8 __________________________ 8 __________________________
9 __________________________ 9 __________________________
10 __________________________ 10 __________________________
11 __________________________ 11 __________________________
12 __________________________ 12 __________________________
13 __________________________ 13 __________________________
14 __________________________ 14 __________________________
15 __________________________ 15 __________________________
16 __________________________ 16 __________________________
110 Megabit Modem 400F, 500L, 600F and 700F User Manual
Appendix C: Configuration Worksheets
WAN Configuration Worksheet - continued
Configuration Information From Service Provider
ATM Configuration
(VPI/VCI for each session)
VPI VCI
17 _________________________ 17 _________________________
18 _________________________ 18 _________________________
19 _________________________ 19 _________________________
20 _________________________ 20 _________________________
21 _________________________ 21 _________________________
22 _________________________ 22 _________________________
23 _________________________ 23 _________________________
24 _________________________ 24 _________________________
25 _________________________ 25 _________________________
26 _________________________ 26 _________________________
27 _________________________ 27 _________________________
28 _________________________ 28 _________________________
29 _________________________ 29 _________________________
30 _________________________ 30 _________________________
31 _________________________ 31 _________________________
32 _________________________ 32 _________________________
Megabit Modem 400F, 500L, 600F and 700F User Manual 111
Configuration Information
Login Name / Login Password Worksheet
From Service Provider Login Information
Login Name and Login
Password
(for each session)
Login Name Login Password
1 ____________________________ 1 ____________________________
2 ____________________________ 2 ____________________________
3 ____________________________ 3 ____________________________
4 ____________________________ 4 ____________________________
5 ____________________________ 5 ____________________________
6 ____________________________ 6 ____________________________
7 ____________________________ 7 ____________________________
8 ____________________________ 8 ____________________________
9 ____________________________ 9 ____________________________
10 ____________________________ 10 ____________________________
11 ____________________________ 11 ____________________________
12 ____________________________ 12 ____________________________
13 ____________________________ 13 ____________________________
14 ____________________________ 14 ____________________________
15 ____________________________ 15 ____________________________
16 ____________________________ 16 ____________________________
112 Megabit Modem 400F, 500L, 600F and 700F User Manual
Appendix C: Configuration Worksheets
Login Name / Login Password Worksheet - continued
From Service Provider Login Information
Login Name and Login
Password
(for each session)
Login Name Login Password
17 ____________________________ 17 ____________________________
18 ____________________________ 18 ____________________________
19 ____________________________ 19 ____________________________
20 ____________________________ 20 ____________________________
21 ____________________________ 21 ____________________________
22 ____________________________ 22 ____________________________
23 ____________________________ 23 ____________________________
24 ____________________________ 24 ____________________________
25 ____________________________ 25 ____________________________
26 ____________________________ 26 ____________________________
27 ____________________________ 27 ____________________________
28 ____________________________ 28 ____________________________
29 ____________________________ 29 ____________________________
30 ____________________________ 30 ____________________________
31 ____________________________ 31 ____________________________
32 ____________________________ 32 ____________________________
Megabit Modem 400F, 500L, 600F and 700F User Manual 113
Configuration Information
Fixed IP Addresses Worksheet
From Service Provider
Fixed IP Addresses
(for each session)
Not applicable if service provider
dynamically assigns IP addresses.
Fixed IP Addresses
Fixed IP Address
1___________
.
___________
.
___________
.
___________
2___________
.
___________
.
___________
.
___________
3___________
.
___________
.
___________
.
___________
4___________
.
___________
.
___________
.
___________
5___________
.
___________
.
___________
.
___________
6___________
.
___________
.
___________
.
___________
7___________
.
___________
.
___________
.
___________
8___________
.
___________
.
___________
.
___________
9___________
.
___________
.
___________
.
___________
10___________
.
___________
.
___________
.
___________
11___________
.
___________
.
___________
.
___________
12___________
.
___________
.
___________
.
___________
13___________
.
___________
.
___________
.
___________
14___________
.
___________
.
___________
.
___________
15___________
.
___________
.
___________
.
___________
16___________
.
___________
.
___________
.
___________
114 Megabit Modem 400F, 500L, 600F and 700F User Manual
Appendix C: Configuration Worksheets
Fixed IP Addresses Worksheet - continued
Contact Service Provider Fixed IP Addresses
Fixed IP Addresses
(for each session)
Not applicable if service provider
dynamically assigns IP addresses.
Fixed IP Address
17__________
.
__________
.
__________
.
__________
18__________
.
__________
.
__________
.
__________
19__________
.
__________
.
__________
.
__________
20__________
.
__________
.
__________
.
__________
21__________
.
__________
.
__________
.
__________
22__________
.
__________
.
__________
.
__________
23__________
.
__________
.
__________
.
__________
24__________
.
__________
.
__________
.
__________
25__________
.
__________
.
__________
.
__________
26__________
.
__________
.
__________
.
__________
27__________
.
__________
.
__________
.
__________
28__________
.
__________
.
__________
.
__________
29__________
.
__________
.
__________
.
__________
30__________
.
__________
.
__________
.
__________
31__________
.
__________
.
__________
.
__________
32__________
.
__________
.
__________
.
__________
Megabit Modem 400F, 500L, 600F and 700F User Manual 115
Configuration Information
116 Megabit Modem 400F, 500L, 600F and 700F User Manual
G
LOSSARY
D
10/100BASE-T
AAL5
ADSL
ATM attenuation authentication
BER bps
CBR cell
The Institute of Electrical and Electronic Engineers (IEEE) 802.3 specification for
Ethernet over thin coaxial cable.
ATM Adaptation Layer 5.
Asymmetric Digital Subscriber Line is a technology in which data is transferred from the service provider to the subscriber at up to 7.552 Mbps, and transferred from subscriber to service provider at up to 928 Kbps. ADSL is the implementation of the physical layer for transmission of data.
Asynchronous Transfer Mode is a high bandwidth, low delay, connection-oriented, packet-like switching and multiplexing technique that uses 53-byte fixed-size cells to transmit voice, video and data over a network. ATM layers define how cells are formatted and provides the transport of the fixed length cells between the modem and the service provider (or endpoints of the virtual connection).
The dissipation of the power of a transmitted signal as it travels over copper wire, measured in decibels (dB).
Security feature offered through PAP and CHAP with PPP sessions.
Bit Error Rate is a measure of transmission quality. The ratio of error bits to the total number of bits transmitted.
bit-per-second is the number of bits transferred during each second of data transmission.
Constant Bit Rate is a Service Class for the modem. It provides constant bit rate data with a timing relationship between the source and the destination. Also, a traffic class that carries a guaranteed constant bandwidth. Best suited for applications that require fixed bandwidth, such as uncompressed voice, video and circuit emulation. CBR is a
Quality of Service class defined by the ATM Forum for ATM networks.
A fixed-length packet. Also, the unit of data transmission used in ATM. Each ATM cell contains a fixed-size frame (53 bytes) consisting of a five-byte header and a 48-byte payload.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 117
118 community string
CRC
DMT downstream traffic encapsulation
ES
Ethernet flash memory gateway
IP
IP address
LAN
LLC
LOF
LOS
MAC margin
A text string required for an SNMP trap to be received by a trap receiver(s). Also, a text string that identifies an SNMP community and is associated with specific access rights (read-only or read/write).
Cyclic Redundancy Check is a method used to verify the accuracy of data transmission.
Discrete Multi-Tone is a modulation coding for an ADSL line. DMT is the modulation technology used for the Megabit Modem 400F, 500L, 600F, and 700F ADSL.
Communications from a service provider to a user.
The inclusion of data in a protocol header prior to transmission, which enables successful data transmission between different protocol networks.
Errored Seconds is the seconds during which errors occur that prevent the payload from being corrected.
A protocol used for LAN traffic, which has a transfer rate of 10 or 100 Mbps.
Non-volatile memory that can be erased and reprogrammed.
A device (generally a router) that provides translation services to allow communication between two dissimilar networks.
Internet Protocol is a TCP/IP protocol that controls packet transmission.
A 32-bit address used in IP routing. The address consists of four octets separated by decimals. The octets comprise a network section, a subnet section (optional) and a host section.
Local Area Network is a physically connected group of devices between which data transmission occurs at high speeds over relatively short distances.
Logical Link Control is an encapsulation protocol for data that you transmit from the modem over the WAN in 1483 Bridging/Routing mode.
Loss Of Frame is an error indicating that the receiving equipment has lost a frame.
Loss Of Signal is an error indicating that the receiving equipment has lost the signal.
Media Access Control is a physical address associated with a device such as a NIC.
For modem configuration, the MAC is used to map inbound traffic (from a remote IP address) to an internal (LAN) IP address. Used with 1483 Bridging/Routing Mode.
The noise margin in decibels that the modem must achieve with a BER of 10 -7 or better to successfully complete initialization.
Megabit Modem 400F, 500L, 600F, and 700F User Manual
Appendix D: Glossary
MIB
NAPT
NVRAM octet
PAP/CHAP
PDU
POTS
PPP
Management Information Base is a set of variables that define the configuration and status parameters for network management. Network management stations can retrieve information from and write information to an MIB. The Internet Engineering
Task Force (IETF) specifies standard MIBS for certain types of devices, ensuring any
NMS can manage the devices. Vendors can specify proprietary MIBs for their devices to fit specific needs.
Network Address and Port Translation provides the means to map private IP addresses and TCP/UDP ports to the public IP addresses (proxy addresses) and
TCP/UDP ports that are set up for the PPP sessions. Used with PPP Mode.
Non-Volatile Random Access Memory is a medium for storing system configuration information, so the information is not lost when the system is reset.
A TCP/IP term indicating eight bits.
Password Authentication Protocol and Challenge Handshake Authentication Protocol are two ways to authenticate PPP sessions. With PAP, the modem sends authentication requests to the service provider and authentication occurs only once during the life of the link.
In CHAP, the service provider returns an authentication challenge to the modem during authentication. CHAP can be renegotiated during the life of the link. Also, both the modem and the service provider must support clear text versions of the password. The CHAP host field must be the same on both ends of the session.
Protocol Data Unit is data as it appears at the interface between a particular sublayer and the sublayer immediately below.
Plain Old Telephone Service.
Point-to-Point Protocol exists between the hardware layer and the network-layer interface protocols. It is a widely used protocol for establishing connections on the
Internet. PPP provides the set up and release of connections for each session.
PAP/CHAP provide the authentication for the PPP sessions.
proxy IP address The proxy IP address is the WAN IP address for one of the 32 sessions. The proxy
IP address is used to enter static NAT entries. See IP address.
PVC Permanent Virtual Circuit is a logical connection comprised of a predefined static route across a packet-switched network that is always in place and always available.
QoS
RFC
Quality of Service is the configured traffic parameters that are assigned to a virtual circuit, which specifies how quickly and how accurately data is transferred from the sender to the receiver.
Request For Comment is a series of notes that contain surveys, measurements, ideas, techniques, and observations, as well as proposed and accepted TCP/IP protocol standards. RFCs are available on the Internet.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 119
120
RIP
SEF
SES session
SNMP
Spanning Tree subnet mask
TCP
TCP/IP
TFTP trap receivers traps
UAS
UBR
Routing Information Protocol allows routers to update the routing tables automatically (for example with information such as how many hops between destinations). The version of RIP you select for the session must match the version supported by the service provider. Versions RIP1 and RIP-1 compatible are used for broadcast. Version RIP 2 is used for multicast.
Severely Errored Frames is the incoming signal has at least four consecutive errored framing patterns.
Severely Errored Seconds is the seconds during which more than 2,500 bipolar errors are detected on the line.
The time during which two computers maintain a communication connection. An example is a connection configured between the Megabit Modem 400F, 500L, 600F, and 700F and the service provider.
Simple Network Management Protocol is a protocol that specifies how to send information between a NMS and managed devices on a network. The managed devices run a program called an agent. The agent interprets SNMP request and responds to them. SNMP is used to set device configurations, read device configurations or read the device status.
A bridging protocol that detects and prevents loops from occurring in a system containing multiple bridges.
A type of IP address that allows a site to use a single IP address for multiple physical networks.
Transmission Control Protocol is a transport protocol used to map inbound traffic
(from a remote IP address) to an internal (LAN) IP address. Establishes connection with remote user before data transmission.
Transmission Control Protocol/Internet Protocol is a protocol used for communications between computers over networks and the internet.
Trivial File Transfer Protocol is a protocol used to download card images or other files from an external TFTP server to the NVRAM of any installed cards, or to upload files from an installed card to an external TFTP server.
PCs configured to receive SNMP traps (messages).
Autonomous, interrupt-driven, SNMP messages sent from a managed node to a network management station to indicate that an event has occurred.
UnAvailable Seconds is the number of seconds during which the line is unavailable.
Unspecified Bit Rate is an ATM traffic type used for LAN traffic. When network congestion occurs, the data is stored in a buffer until it can be sent.
Megabit Modem 400F, 500L, 600F, and 700F User Manual
Appendix D: Glossary
UDP upstream traffic Communications from a user to a service provider.
VCI Virtual Channel Identifier is a 16-bit field addressing identifier in the header of an ATM cell used to route cell traffic. It identifies a particular VC link for a given VP.
VCMUX
User Datagram Protocol is a transport protocol used to map inbound traffic (from a remote IP address) to an internal (LAN) IP address. Uses a protocol port number for the destination at the remote location.
VC
Virtual Channel Multiplexer-based encapsulation used for networks with large numbers of virtual channels making it practical to carry a single protocol per virtual channel.
A Virtual Channel is a logical connection in the ATM network over which ATM cells are transmitted.
VPI
VP
WAN
Virtual Path Identifier is an 8-bit field addressing identifier in the header of an ATM cell that is used to route cell traffic. It identifies a particular VP link.
A Virtual Path is a group of VCs carried between two points. The VP provides a means of bundling traffic traveling in the same direction. VPs are defined by a unique VPI value.
Wide Area Network is a network consisting of nodes located across a large geographical area. Also, the connection between a service provider and Megabit 700F
Modem.
Megabit Modem 400F, 500L, 600F, and 700F User Manual 121
122 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Numerics
10/100BASE-T connector pinouts 101 description 117
A adaptation layer 95
ADSL connector pinouts 101 description 85, 117
DMT 85 service 20 specifications 95 viewing status 73
ATM adaptation layer 95 cell format 95 description 86, 117 max VCs 95 specifications 95 attaching modem feet 16 authentication security 87
B back panel 17, 18 bridge/router 13, 87, 88, 107 description 88 bridging specifications 96
Megabit Modem 400F, 500L, 600F, and 700F User Manual
C cables connecting 18 installation 18 requirements 15 cell formats 95
CHAP
Host Name 109 compliance 98 configuration introduction 1 modem 23 saving 28, 59, 70 service provider 13 web browser 1, 23 configuration worksheets 107 configuring
LAN
PPP Over ATM 58, 69
LAN user assignments 60
PC 24 sessions 51, 63 system settings 35 web browser 25 connecting cables 18 modem feet 16 phone service 21
I
NDEX
123
Index connector pinouts 101
D defining
SNMP parameters 38
TFTP parameters 36 user assignment parameters 60 deleting
PPP Over ATM WAN session 57, 68 descriptions
10BASE-T 117
ADSL 85, 117
ATM 86, 117 bridge/router 88
DMT 85, 118
DNS 14 downstream 118
MAC 118 modem 1
NAT 14, 87, 119
PAP/CHAP 87 power cable 14 subnet mask 120
TFTP 120 upstream 121
DMT ADSL 85
DMT description 85, 118
DNS description 14
DNS resolution 93 domain name system
See DNS
124 downstream description 118 transmission rate 1, 85 encapsulation methods bridge/router 87
PPP 87
E factory defaults default values 31 flat-surface mounting 11
F
H host name
CHAP 109
I installation cable types 15 introduction 1 kit 100 phone service 13 requirements 9 installing the modem 15 attaching feet 16 cabling 18 flat-surface mounting 11 setting MDI/MDI-X switch 17 wall mounting 12
IP routing 90
See routing
Megabit Modem 400F, 500L, 600F, and 700F User Manual
L
LAN configuring
PPP Over ATM 58, 69 configuring users to sessions 60 interface specifications 97 viewing statistics 75 layer bridging 88
LEDs indications 20 login configuration worksheet 112, 113
MAC description 118 layer bridging 88 main menu
ADSL 73 statistics 75
MDI/MDI-X switch 17
MIB and trap support 92
M
MIBs 98 mode of operation
Bridge/Router RFC1483 48
PPP over ATM 48 modem adaption rate 84 attaching feet 16 configuration process 23 description 1 flat-surface mounting 11
Megabit Modem 400F, 500L, 600F, and 700F User Manual installation 15 obtaining IP Address automatically 24 overview 1 resetting 30 resetting to factory defaults default values 31 setting MDI/MDI-X switch 17 storage 9 technology 1 transmission speeds 1 unpacking 9 user assignments 60 wall mounting 12 modem feet connecting 16 mounting clearances 11, 12 flat-surface 11 wall 12
NAT description 87, 119
NAT description 14, 87
N network address port translation
See NAPT network statistics 75
P panel back 17, 18
PAP/CHAP
Index
125
Index authentication security 87 description 87 parameters
SNMP 38
TFTP 36 user assignment 60
PC configuring 24 phone service connecting 21 installing 13 requirements 13 pinouts 101 power cable 14
PPP 87
CHAP host name 109 specifications 96
PPP Over ATM configuring
LAN 58, 69 deleting session 57, 68 sessions 86, 87 product overview 1 protocols 14 bridge/router 88
NAT 87
PPP 52, 64
SNMP 91 spanning tree 88
126 rate vs.reach 99 requirements cables 15 installation 9 phone service 13 power cable 14 service provider 13
R site 10 system 10 reset unit 30 resetting modem 30
Returns 105
RFCs 98 router/bridge 13, 87, 88, 107 routing specifications 96 static IP 90
S saving a configuration 28, 59, 70 service
ADSL 20 service provider configuration 13 requirements 13 sessions configuring 51, 63 site requirements 10
SNMP parameters
Megabit Modem 400F, 500L, 600F, and 700F User Manual
defining 38 protocol 91 software upgrading 77 specifications 95
ADSL 95
ATM 95 bridging 96 environmental 97
LAN interface 97 physical 97 power 97
PPP 96 routing 96
WAN interface 95 static
IP routing 90 statistics 73 statistics menu
LAN statistics 75
WAN statistics 76 storage 9 subnet mask description 120 support 103
MIB and trap 92 system configuring settings 35 mode of operation
Bridge/Router RFC 1483 48
PPP Over ATM 48 requirements 10 troubleshooting 84
Megabit Modem 400F, 500L, 600F, and 700F User Manual system menu factory default 31 reset unit 30 technical support 103 technical specifications 95
TFTP
T description 120 parameters defining 36 server 93 transmission rate downstream 1, 85 upstream 1, 85 troubleshooting 84
U unpacking modem 9 upgrading software 77 upstream description 121 transmission rate 1, 85 user assignments
LAN 60
V
VCI configuration worksheet 110 viewing
ADSL status 73
LAN statistics 75
Index
127
Index network statistics 75
WAN statistics 76
VPI configuration worksheet 110
W wall mounting 12
WAN interface specifications 95 viewing statistics 76 warranty 103 web browser configuration 25 worksheets 107 login 112, 113
VCI 110
VPI 110
128 Megabit Modem 400F, 500L, 600F, and 700F User Manual
Index
Megabit Modem 400F, 500L, 600F, and 700F User Manual 129
ADC DSL Systems, Inc.
14402 Franklin Avenue
Tustin, CA 92780
Tel: 714.832.9922
Fax: 714.832.9924
For Technical Assistance:
800.638.0031
714.730.3222
´+Q5¶5]¨
1149215 Rev A
பதிவிறக்கு
விளம்பரம்