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Tahoe 4681 User Manual

4-port g.shdsl.bis/fastethernet modem card
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Tahoe 4681
(4-port G.shdsl.bis/FastEthernet modem card)

User Manual

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Summary of Contents for Tahoe 4681

  • Page 1: User Manual

    Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) User Manual...
  • Page 3 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) User Manual...
  • Page 4 SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDA- TIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE, BUT ARE PRESENTED WITHOUT WAR- RANTY OF ANY KIND, EXPRESS OR IMPLIED AND TAHOE MAKES NO COMMITMENT TO UPDATE THE INFORMATION CONTAINTED HERE.

  • Page 5: Table Of Contents

    Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) Contents Introduction ..............................1 Front Panel ..............................1 Leased Line ..............................1 LAN ................................2 Status LEDs .............................2 Installation ..............................3 Advanced Configuration and Management ..................5 Telnet Connection ..........................5 Internal Backplane Connection ......................5 Commands Summary ...........................6 DHCP Server Configuration ......................25 Appendix A, Troubleshooting ......................31...
  • Page 6 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card)

  • Page 7: About This Manual

    Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) Preface About this Manual This manual contains following chapters: Chapter 1, Introduction An overview of the modem, description of its interfaces and features Chapter 2, Installation How to install the card in a DSL Access Multiplexer Chapter 3, Advanced Configuration...

  • Page 8: Document Conventions

    Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) Document Conventions This manual uses following conventions: boldface font Commands and keywords < > Arguments for which you have to supply values Optional arguments { a | b | c } Alternative arguments [ a | b | c ]...

  • Page 9: Introduction

    Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) Introduction Thank you for purchasing the Tahoe 4681 modem card. We did our best to ensure highest stand- ard of reliability and performance of our products. Devoting many years of research and devel- opment we are proud to provide a superior quality device unfolding new possibilities for the use of the copper lines.

  • Page 10: Lan

    Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) The Fast Ethernet interface is used to connect the modem to the Local Area Network (LAN). It may work at speeds of 10 Mbps (10Base-T) or 100 Mbps (100Base-Tx), in full-duplex or half- duplex mode. The mode of transmission is selected automatically, although a specific setting can be forced.

  • Page 11: Installation

    Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) Installation Before installing the card make sure that your working site is properly grounded. Hold the card by the front panel handler and do not touch other components to prevent damage caused by electro- static discharge.
  • Page 12 LCD. The card can be configured through a telnet connection or using the DSLAM management card. Configuration using telnet is described in next chapter, while the management card configura- tion is described in Tahoe Network Management Card User Manual.

  • Page 13: Advanced Configuration And Management

    IP address is possible from anywhere in the network. After connecting a password prompt will appear: User Access Verification Password: The default password is “Tahoe” (case sensitive). If the password entered is correct, a command prompt will appear: Tahoe> Internal Backplane Connection If the telnet connection is not possible (e.g.

  • Page 14: Commands Summary

    Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) Commands Summary Complete command set displays command list ARP table configuration bridge bridge mode settings bundle groups DSL lines into bundles config displays current configuration console console access settings dhcp DHCP configuration G.shdsl line configuration eepromdump dumps EEPROM (configuration memory) contents...
  • Page 15 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) syslog sending logs to remote syslogd tech system information for tech support telnet telnet server settings tcpdump shows interface traffic tftp TFTP server settings timeout login and session timeout settings uptime shows router uptime...
  • Page 16 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) A static ARP entry can be added using arp add: Tahoe> arp add 10.0.0.3 00:50:13:E9:5C:01 A proxy ARP entry can also be added using arp add: Tahoe> arp add 10.0.0.4 proxy When a proxy ARP entry is added, the modem will respond with its own MAC address to the ARP requests asking of the specified IP address.
  • Page 17 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) Entering bridge list displays a list of MAC addresses with the name of the interface on which certain address was heard. If you select transparent or dumbtrans mode while being connected to the modem via telnet you will loose the possibility of remote management (the modem will stop responding to its IP address).
  • Page 18 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) rest is available to provide compatibility with devices from other manufacturers. Moreover TCPAM32 allows throughputs from 256 kbps to 5696 kbps per line, while TCPAM16 – from 128 kbps to 2304 kbps and TCPAM4 – 64 kbps. The “auto” setting forces use of TCPAM32 for speeds greater than or equal to 256 kbps per line and TCPAM16 or TCPAM4 for lower rates.
  • Page 19 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) This command is used to configure specific DSL line. Following options are available: – sets the throughput of a single line. The speed ranges from dsl <line> speed <value> from 64 to 5696 kbps. New speed is set after renegotiating the DSL connection.
  • Page 20 This command has similar syntax as the Linux ifconfig: Tahoe> ifconfig <interface name> [<IP address>] [netmask <network mask>] [bcast <broadcast address>] [ static | dynamic ] [bridge { on | off }] The ifconfig alone displays information about all active interfaces. Entering ifconfig <interface name>...
  • Page 21 flush After the add, insert or del option, following parameters can be added: Tahoe> ipchains { add | insert | del } [-s <source subnet>/<netmask> [<port range>]] [-d <destination subnet>/<netmask> [<port range>]] [-p { tcp | udp | icmp }] [-y] [-m <IP address>] { accept | deny | masq | pat <IP address>[:<port>]}...
  • Page 22 Otherwise the router will always apply the first deny rule and will never reach the second one, as the packet coming from 215.16.11.5 fits both of them and if the general one is first, then it will be applied. More examples: Tahoe> ipchains add d 0.0.0.0/0 80-80 p tcp deny...
  • Page 23 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) Inhibits access to the port 80 on all external servers. Tahoe> ipchains add s 192.168.0.0/16 masq Enables masquerade for the 192.168.0.0/16 subnet (packets coming from other addresses remain unchanged). lang Selects the language used to display messages during the telnet or console connection and on the LCD.
  • Page 24 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) – enables or disables the Ethernet port power { on | off } – read all or selected MII registers read [ address ] – writes to a MII register write { address } { value } Configuring the Ethernet transceiver may cause loss of the LAN connection, which in turn may...
  • Page 25 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) prompt By using the prompt command you may change the default Tahoe> prompt to any other text that will help you identifying the device. Shows the processes list quit This command closes the configuration session and disconnects from the modem.
  • Page 26 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) – removes route to the specified IP address route del <address> – removes route to the speci- route del -net <address> netmask <network mask> fied subnet – removes the default route route del default snmp The snmp command is used to configure the SNMP (Simple Network Management Protocol)
  • Page 27 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) strictarp The strictarp command helps protecting the LAN against the unauthorized access. After ena- bling the “strictarp” mode (by typing strictarp on) and entering the static IP-MAC assignments (using arp add) the modem would listen to incoming ARP requests asking for the addresses it has in its static table.
  • Page 28 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) respectively. Moreover the access may be limited to a certain IP address: Tahoe> telnet host <IP address> If the IP address is set as 0.0.0.0, then the access is possible from anywhere in the network.
  • Page 29 The command sets the inactivity time (in seconds), after which the telnet connection is closed: Tahoe> timeout <during the session> [<during logging in>] The first parameter is used after logging in, while the second one (optional) during the login process.
  • Page 30 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) – full access to the device admin – permits only reading of the configuration and the statistics read-only – selects the working mode – to either single or multi- user mode { single | multi } user Displays current firmware version and compilation date.
  • Page 31 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) To manage VLAN traffic first you have to follow these steps: 1. Disable transparent mode using vlan transparent off command. 2. Add VLANs you want to forward using vlan create <vid>. 3. Add interfaces to that VLAN using vlan <vid> add <interface>.
  • Page 32 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) watchdog The watchdog command gives additional control over the modem’s unpredicted behavior (i.e. a misconfiguration disabling further communication with the modem). The modem sends ICMP ping packetd to check the availability of certain IP addresses and reboots, if it doesn’t receive ping reply from one of them.

  • Page 33: Dhcp Server Configuration

    Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) DHCP Server Configuration The dhcp command is used to configure DHCP/BOOTP server and relay agent. The server is used to assign IP addresses, network masks, gateway and DNS addresses and other parameters to the network stations. It is easy to reconfigure a network that uses a DHCP server – it is enough to change server settings and every station will automatically retrieve new configuration.
  • Page 34 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) The meaning of subsequent entries is described later in this chapter. Basic DHCP server configuration rules Before starting using DHCP server please read following guidelines: the configuration is organized in a hierarchical manner – the most general group of set- tings is a network –...
  • Page 35 Moreover additional IP subnets may be added – those which are not set up on any of the interfaces, but do exist in the same physical network or behind a DHCP relay: Tahoe> dhcp add subnet local lan 10.0.0.0 255.0.0.0 dhcp add host <name> <MAC address> <IP address>...
  • Page 36 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) Example: Tahoe> dhcp add option domain-name tahoe-group.com dhcp add relay <address> [<port>] Adds a DHCP server address to which the DHCP requests are forwarded, when the Relay Agent mode is enabled. The <port> parameter is optional – its default value is 67: Tahoe>...
  • Page 37 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) dhcp { network | subnet | host } The command adds or deletes an option within a specified group – network, subnet or host. To add an option to a network type: dhcp network <name> add <option name> <value>...
  • Page 38 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card)

  • Page 39: Appendix A, Troubleshooting

    Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) Appendix A, Troubleshooting Problem Possible solutions The modems cannot check the cables and connector pinouts synchronize with each other check if the speed setting is the same on both modems check if one modem is set as Master and the other one as Slave the line may be too long for selected speed –...
  • Page 40 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card)

  • Page 41: Appendix B, Technical Specification

    Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) Appendix B, Technical Specification processor: Motorola PowerPC, 100MHz memory: 4MB SDRAM network protocols: IP, TCP, UDP, ICMP, TFTP, SNMP, DHCP, BOOTP, RFC-1490, PPP, Frame Relay, Cisco® HDLC, IEEE 802.1q G.shdsl interface: connector: 4 x RJ-11 standards: ITU G.991.2 (G.shdsl), ITU G.994.1 (G.hs)
  • Page 42 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card)

  • Page 43: Appendix C, Safety Information

    Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) Appendix C, Safety Information Read the following safety notices before installing or using the Tahoe modem: This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents.
  • Page 44 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card)

  • Page 45: Appendix D, Declaration Of Conformity

    Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card) Appendix D, Declaration of Conformity TAHOE Piotr Kaczmarzyk ul. Uniwersytecka 1 50-951 Wroclaw, Poland We declare that the product Tahoe 4681 complies with the regulations of the following European Directives: 73/23/EEC low voltage safety requirements 89/336/EEC EMC requirements 99/5/EEC radio &...
  • Page 46 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card)
  • Page 47 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card)
  • Page 48 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card)
  • Page 49 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card)
  • Page 50 Tahoe 4681 (4-port G.shdsl.bis/FastEthernet modem card)
  • Page 52 Uniwersytecka 1 50951 Wrocław, Poland phone: +48 71 344 26 37, fax: +48 71 344 26 42 www.tahoe-group.com...

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