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PRELIMINARY

Chapter 1: About The Product

Megabit Modem 500L Installation Manual

PPLICATIONS

The Megabit Modem 500L provides a practical solution for many networking applications.
The following illustrations show some of the many possible solutions when using the Megabit
Modem 500L.

Connection to a Remote Office

You can work at home or at a remote office and have a connection to a corporate office network.

Summary of Contents for 500L

Page 1: ...P R E L I M I N A R Y Megabit Modem Model 500L User Manual MEGABIT MODEM...

Page 2: ...ontained in this document shall not be modified used copied reproduced or disclosed in whole or in part without the written consent of PairGain Technologies Inc Other product names mentioned in this p...

Page 3: ...Chapter 9 provides a reference for technology implemented in the Megabit Modem 500L The chapter covers information about ATM over ADSL transmission PPP over ATM operating mode and SNMP management IP...

Page 4: ...designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy a...

Page 5: ...our System 6 Requirements For The Installation Site 6 Location for Modem Installation 6 Phone Service 9 What You Need from Your Service Provider 9 Choose a Power Cable 9 Chapter 3 Installing the Modem...

Page 6: ...figuring Sessions _____________________________________________33 Selecting a Configuration Model 34 Configuring PPP over ATM Sessions 35 Configuring the WAN 36 Configuring the LAN 39 Saving the Confi...

Page 7: ...cation Security 57 NAT 57 Management Protocols 58 SNMP 58 Megabit Modem 500L SNMP Agent 58 MIB and Trap Support 59 DNS Resolution 59 TFTP Server 59 Appendix A Specifications and Data _________________...

Page 8: ...echnical Support 69 World Wide Web 69 Limited Warranty 70 Advance Replacement 71 Billing 71 Returning a Product 71 Appendix C Configuration Worksheets _______________________________________73 Configu...

Page 9: ...Subscriber Line ADSL provides rate adaptive transmission which means the service provider can deliver the best possible transmission rate to you based on distance and line conditions The Megabit Modem...

Page 10: ...Gain software to provide access through an HTTP server to configure manage and monitor the modem through a Web based interface SNMP agent for management through any industry standard SNMP platform aut...

Page 11: ...The Megabit Modem 500L provides a practical solution for many networking applications The following illustrations show some of the many possible solutions when using the Megabit Modem 500L Connection...

Page 12: ...Applications PRELIMINARY 4 Megabit Modem 500L Installation Manual P R E L I M I N A R Y Internet Access for Users at Home You can connect an at home user to the Internet...

Page 13: ...available from your service provider see What You Need from Your Service Provider on page 9 VERIFY PACKAGE CONTENTS As you unpack the Megabit Modem 500L visually inspect the container for signs of dam...

Page 14: ...on 4 0 or higher Ethernet hub optional REQUIREMENTS FOR THE INSTALLATION SITE To install the Megabit Modem 500L you must select a location to install the modems as described in the section Location fo...

Page 15: ...rack Do not stack the modems when installing on a flat surface The modems do not dissipate heat properly when stacked LA N AD SL PW R LIN K TX RX SY NC TX RX MA R OH M EGABIT M O D EM 5 0 0 L LA N AD...

Page 16: ...Ensure the minimum dimensions shown in the illustration for spacing between modems are met to allow for heat dissipation viewing of front panel LEDs and cabling LA N ADSL PW R LI NK TX RX SY NC TX RX...

Page 17: ...ion 1 If using CHAP the CHAP authentication name for each session 2 Session address for Ports 1 through 3 WAN configuration ATM VPI and ATM VCI specified for each session when using fixed IP addresses...

Page 18: ...Choose a Power Cable PRELIMINARY 10 Megabit Modem 500L Installation Manual P R E L I M I N A R Y...

Page 19: ...form the installation on the following pages see Location for Modem Installation on page 6 to determine where to place modems Use the installation kit parts listed below in the installation procedures...

Page 20: ...on Manual P R E L I M I N A R Y ATTACHING THE FEET Attach each of the four adhesive backed rubber feet to a footprint recess on the bottom of the modem L A N A D S L P W R L IN K T X R X S Y N C T X R...

Page 21: ...thout 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 an MDI...

Page 22: ...nection grey phone cord for the ADSL port WAN connection and the power cable to the power connector If you need pinouts for the ADSL and 10 100BASE T connectors see Connector Pinouts on page 67 DSL PO...

Page 23: ...ed to the modem 10 100BASE T interface TX Flashing green Modem is transmitting data to devices on the LAN Off Modem is not transmitting data to the LAN RX Flashing green Modem is receiving data from d...

Page 24: ...ERVICE If you get phone service all you need is an RJ 11 phone jack to connect your phone This lite rate modem provides splitterless capability which allows reception of phone service without special...

Page 25: ...rocess flow is shown below Setting Up the PC to Request an IP Address Configuring System Settings Defining TFTP Parameters Defining SNMP Parameters Setting the Time and Date START Configuring PPP over...

Page 26: ...rotocol DHCP server provides an IP address to this PC dynamically The following is an example of how to set up the PC using Microsoft Windows 95 If you use an application other than Windows 95 refer t...

Page 27: ...the Megabit Modem 500L Web pages through a Web browser see page 6 for Web browser versions supported The Web browser must have the Proxies disabled Change the Proxie for your Web browser 1 Open a Web...

Page 28: ...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 field The Megabit Modem 500L Web page displays with two primary...

Page 29: ...permanent however until you write them to Non Volatile RAM NVRAM and reset the modem You must reset the modem to effect these changes when defining PPP over ATM LAN settings see page 39 LAN IP addres...

Page 30: ...cking Submit to write configuration parameters to RAM update your configuration by writing the parameters to non volatile RAM NVRAM 1 Click System on the Main Menu to access the System Menu 2 Click Up...

Page 31: ...vides a known starting point if you are troubleshooting the system or simply want to reconfigure parameters The factory default values are listed on page 24 1 Click System on the Main Menu to access t...

Page 32: ...d Get Community String public Admin IP Address 0 0 0 0 Set Community String private PPP Over ATM PPP Over ATM WAN Configuration PPP Over ATM LAN Configuration Service Name blank field IP Address 192 1...

Page 33: ...uration and write the changes to NVRAM or return modem configuration to factory defaults you must reset the modem See page 21 for a list of changes that you must reset to effect 1 Click System on the...

Page 34: ...Saving the Configuration PRELIMINARY 26 Megabit Modem 500L Installation Manual P R E L I M I N A R Y...

Page 35: ...ers for the Megabit Modem 500L The following sections show the Web pages you use to configure the TFTP server IP address and network mask for performing functions such as software upgrades on page 28...

Page 36: ...for procedures on how to update the software on your modem 1 Click System from the Main Menu 2 Click TFTP Parameters on the System Menu 3 Do the following 4 Click Submit to accept the changes Enter th...

Page 37: ...for more information about managing the modem through SNMP 1 Click System from the Main Menu 2 Click SNMP Parameters on the System Menu 3 Do the following Select Enable Trap Sending if you want the m...

Page 38: ...er and agent to allow access to the SNMP function Public is the default Trap Community String which is an authentication string for the trap receiver You can change the name using up to 19 characters...

Page 39: ...r the modem 1 Click System from the Main Menu 2 Click Set Date Time on the System Menu 3 Do the following 4 Click Submit to accept the changes Enter the date in the format dd mm yy for example 03 10 1...

Page 40: ...Setting the Time and Date PRELIMINARY 32 Megabit Modem 500L Installation Manual P R E L I M I N A R Y...

Page 41: ...elect when configuring sessions See Selecting a Configuration Model on page 34 to determine the easiest and most efficient way for you to set up your session After you determine the configuration mode...

Page 42: ...the Megabit Modem 500L 1 Complete the WAN configuration page 36 It is optional to map a LAN user to each PPP over ATM session at this time You can perform this at a later time see Step 4 after the mod...

Page 43: ...nicating between the modem and the service provider over the WAN page 36 Then configure parameters for communicating between the LAN and the modem page 39 After setting up all appropriate WAN and LAN...

Page 44: ...on page Enter a descriptive name for the Service Name The name you enter here also displays in the Port field on the EasySession page the fields are linked Use a maximum of 19 characters for the servi...

Page 45: ...ession IP address to private IP addresses It is recommended that you always enable NAT You can choose however not to use NAT for address translation If you do not use NAT you can assign only one LAN u...

Page 46: ...e Service Name and User s IP Address fields 2 After adding or deleting all user assignments click Done to return to the EasySession page You can map your PC to only one of the three sessions at a time...

Page 47: ...ATM LAN Configuration page 3 Do the following to configure the LAN Enter the IP Address and IP Net Mask subnet mask for the modem Ethernet 10 100BASE T LAN port The IP address will not take effect how...

Page 48: ...evice that will be the Primary DNS The primary Domain Name System DNS device translates human readable machine names into IP addresses See page 59 for more information on DNS resolution Enter the IP a...

Page 49: ...c NAT entries Enter the Private IP Address for a user on the LAN that is mapped to the Proxy IP Address you will enter in field of the Static NAT Entry shown below Port is the logical port for the pro...

Page 50: ...M Enter the Remote IP Address for a user at a remote site that you are mapping to a user on the LAN LAN user was entered in field of the Static NAT Entry shown above Port is the logical port for the p...

Page 51: ...eactivate sessions Also if you power down the modem with sessions enabled those same sessions will be enabled when you power up the modem Activating Sessions The EasySession page provides status for e...

Page 52: ...owser click the Reload icon shown to the right to refresh the screen 1 On the EasySession main page select the box next to each session that you want to disable 2 Click Disable at the bottom of the Ea...

Page 53: ...wn below and for WAN and LAN statistics Viewing Network Statistics on page 48 VIEWING ADSL STATUS The Megabit Modem 500L displays the status of the ADSL link From the Main Menu select ADSL to display...

Page 54: ...Viewing ADSL Status PRELIMINARY 46 Megabit Modem 500L Installation Manual P R E L I M I N A R Y Description of the ADSL Statistics fields are on page 46 Click Home to return to Main Menu...

Page 55: ...LOS Loss of Frame LOF Loss of Margin LOM or Loss of Cell Delineation LCD The SNR margin at which the modem is currently operating dependent on parameters selected by the service provider Minimum SNR m...

Page 56: ...WING NETWORK STATISTICS The Megabit Modem 500L displays the status for the LAN and WAN links From the Main Menu select Statistics to display the Statistics Menu LAN Statistics The Megabit Modem 500L d...

Page 57: ...modem LAN port Total number of IP packets processed Number of errored packets detected at this port and the number of packets forwarded Number of packets reassembled at this port and the number of tr...

Page 58: ...tatistics Menu The values in the statistics fields are a total for all VCs configured View the following WAN information System time and date and total hours link is up Statistics for the ATM layer in...

Page 59: ...download software upgrades to your system Use the Web page shown on page 52 to initiate the upgrade To download software you must have a host on your network that has been configured as a TFTP server...

Page 60: ...egins 3 Click Download WEB pages on the System Menu then click Proceed The modem software upgrade for html files htm automatically begins 4 Click Download Configuration on the System Menu then click P...

Page 61: ...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...

Page 62: ...Troubleshooting PRELIMINARY 54 Megabit Modem 500L Installation Manual P R E L I M I N A R Y...

Page 63: ...hysical 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 transmissio...

Page 64: ...in the VP which provide the three sessions for the Internet or for other WAN applications You can however activate only one session at a time Mapping an ATM Session Your service provider will give yo...

Page 65: ...anslation NAT provides the means to map private IP addresses to the public IP addresses proxy addresses that are set up for the PPP sessions Essentially you hide your private addresses behind the publ...

Page 66: ...B 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 ca...

Page 67: ...groups ColdStart linkUp linkDown and authenticationFailure traps Link status traps are sent for events related to Ethernet ADSL MIB ATM MIB PairGain Agent MIB PairGain Tiger MIB DNS RESOLUTION If you...

Page 68: ...TFTP Server PRELIMINARY 60 Megabit Modem 500L Installation Manual P R E L I M I N A R Y...

Page 69: ...ation and Reassembly SAR layer segments and reassembles AAL5 PDUs into ATM cells that are 48 byte SAR PDUs ATM Layer Attaches or strips the 5 byte header to the 48 byte SAR PDU Performance is a maximu...

Page 70: ...Control Protocol IPCP which is defined in RFC 1332 Authentication PAP CHAP Provides authentication of PPP sessions for security through Password and Challenge Handshake Authentication Protocols RFC 19...

Page 71: ...NCE Operational 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 Emissions and Immunity Compliance FCC Part 15 Subpar...

Page 72: ...nual P R E L I M I N A R Y RFCS MIBS 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 cli...

Page 73: ...0 5 0 6 0 7 0 8 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0 20 0 21 0 22 0 23 0 24 0 25 0 26 0 27 0 Reach in Kilofeet Downstream Upstream Payload Rate vs Reach on 26 AWG 0 5 mm with 4dB Ma...

Page 74: ...Attaches to the base of the modem Grey cable Silver satin phone cord with 4 pin modular plugs straight through Connects the modem ADSL connector to the wall phone jack for access to the Internet Blac...

Page 75: ...tor for this interface is an RJ 11 See page 14 for the location of this port 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 positi...

Page 76: ...Hardware PRELIMINARY 68 Megabit Modem 500L Installation Manual P R E L I M I N A R Y...

Page 77: ...vice Engineering group at one of the following numbers Telephone 800 638 0031 714 832 9922 Fax 714 832 9924 Email support pairgain com A Customer Service Engineer answers technical assistance calls Mo...

Page 78: ...oftware is stored will be free from material defects under normal use PairGain will replace defective media at no charge if it is returned to PairGain during the 30 day warranty period along with proo...

Page 79: ...t or if no trouble is found NTF as determined by PairGain the Buyer will be responsible for payment of the cost of the replacement product BILLING PairGain s repair of products returned for repair rep...

Page 80: ...quipment The same purchase order number you gave to Customer Service when you requested an RMA number A description of the equipment as well as the number of units you re returning to us Be sure to in...

Page 81: ...tion 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 CONFIGURATION INFORMATION 1 If usi...

Page 82: ..._________ 3 __________________________ From Service Provider Login Information Login Name and Login Password for each session Login Name 1 ____________________________ 2 ____________________________ 3...

Page 83: ...e service provider or endpoints of the virtual connection attenuation The dissipation of the power of a transmitted signal as it travels over copper wire measured in decibels dB authentication Securit...

Page 84: ...ory Non volatile memory that can be erased and reprogrammed gateway A device generally a router that provides translation services to allow communication between two dissimilar networks IP Internet Pr...

Page 85: ...dem 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...

Page 86: ...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 co...

Page 87: ...fic It identifies a particular VC link for a given VP VCMUX Virtual Channel Multiplexer based encapsulation used for networks with large numbers of virtual channels making it practical to carry a sing...

Page 88: ...PRELIMINARY 80 Megabit Modem 500L Installation Manual P R E L I M I N A R Y...

Page 89: ...tation layer 61 addresses VCI 56 VPI 56 ADSL connector pinouts 67 description 55 75 DMT 55 loop Reset 45 service 15 specifications 61 viewing status 45 47 asymmetric digital subscriber line See ADSL a...

Page 90: ...modem feet 12 phone service 16 connector pinouts 67 D de activating sessions PPP over ATM 44 defining dynamic IP addresses 37 fixed IP addresses 37 SNMP parameters 29 static NAT table parameters 40 TF...

Page 91: ...ds 2 upstream transmission rate 2 flat surface mounting 7 I installation cable types 11 introduction 1 kit 66 phone service 9 requirements 5 installing the modem 11 attaching feet 12 cabling 14 flat s...

Page 92: ...storage 5 technology 1 transmission speeds 1 unpacking 5 user assignments 38 wall mounting 8 modem feet connecting 12 mounting clearances 7 8 flat surface 7 wall 8 N NAT description 40 57 77 table par...

Page 93: ...phone service 9 power cable 9 service provider 9 site 6 system 6 reset unit 25 resetting modem 25 RFCs 58 64 S saving a configuration 21 42 service ADSL 15 service provider configuration 9 requiremen...

Page 94: ...arameters 29 TFTP parameters 28 update configuration 22 upgrade software 51 T technical support 69 technical specifications 61 TFTP description 78 parameters defining 28 server 59 time and date 31 tra...

Page 95: ...R E L I M I N A R Y VPI addresses 56 configuration worksheet 74 W wall mounting 8 WAN configuring PPP over ATM 36 interface specifications 61 viewing statistics 50 warranty 69 web browser configurati...

Page 96: ...PRELIMINARY 88 Megabit Modem 500L Installation Manual P R E L I M I N A R Y...

Page 97: ...P R E L I M I N A R Y...

Page 98: ...I M I N A R Y ISO 9001 DNV Certification Inc Certificated Firm Corporate Office For Technical Assistance 14402 Franklin Avenue Tustin CA 92780 Tel 714 832 9922 Fax 714 832 9924 800 638 0031 425 020 1...

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