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ELSA Cable manual

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© 1999 ELSA AG, Aachen (Germany)

While the information in this manual has been compiled with great care, it may not be deemed an assurance of product characteristics. ELSA shall be liable only to the degree specified in the terms of sale and delivery.

The reproduction and distribution of the documentation and software supplied with this product and the use of its contents is subject to written authorization from ELSA. We reserve the right to make any alterations that arise as the result of technical development.

ELSA is DIN EN ISO 9001 certified. The accredited TÜV CERT certification authority has confirmed ELSA conformity to the worldwide ISO 9001 standard in certificate number 09 100 5069, issued on June 15, 1998.

Trademarks

Windows®, Windows NT® and Microsoft® are registered trademarks of Microsoft, Corp.

All other names mentioned may be trademarks or registered trademarks of their respective owners. The ELSA logo is a registered trademark of ELSA AG.

Subject to change without notice. No liability for technical errors or omissions.

ELSA AG	ELSA, Inc.
Sonnenweg 11	2231 Calle De Luna
52070 Aachen	Santa Clara, CA 95054
Germany	USA

www.elsa.com

Aachen, October 1999

No. 20840/1099

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ELSA Cable manual

Contents

Manual Aachen ELSA, IncSonnenweg GermanyThank you for placing your trust in this Elsa product Introducing the Elsa MicroLink CablePage Content Elsa Cable ModemVI Content Setup/SNMP-module Viii Content Elsa MicroLink Cable What does the unit look like?Introducing the Elsa MicroLink Cable Meanings of the specific blink codes SyncBC D E F G These LEDs show the corresponding network controller statusFast Internet Highlights of the Elsa MicroLink CableNode or hub? Cable networkMore than just Internet Regional contentInternet at all times-always online BackboneProxy servers CE conformity and FCC radiation standard CE and FCCIntroducing the Elsa MicroLink Cable Installation and configuration Elsa MicroLink CableConfiguring the Elsa MicroLink Cable First StepsPreparations Quick Start Quick configurationsConfiguration as a bridge LAN Configuration as a router Off you go into the Web with a whole new sensation of speedOn the Router tab, enable the IP Router option Obtain IP addresses automatically use Dhcp TCP/IP installationConfiguring fixed IP addresses not using Dhcp Checking the IP configuration User-friendly method inband Requirements for inband configurationConfiguration modes Starting inband configuration using Elsa LANconfig Start up inband configuration using telnetConfiguration commands This command Means this For instanceSet/se/snmp/admin The Administrator Whats happening on the line? How to start a traceCommand to call up a trace follows this syntax Trace OutputsExamples New firmware with FirmSafeThis is how FirmSafe works How to load new software Elsa LANconfigConfiguration using Snmp General TftpCommand Target/Source Function Accessing tables and parameters using SnmpAccess protection in Snmp IP address IP-netmask Router name Distance Deleting rows in tables using SnmpAppending rows to tables using Snmp Error messages via Snmp trap Management Information Base MIBConfiguration modes Login barring Security for your configurationPassword protection Operating modes and functionsGlobally to Access control via TCP/IPSecurity for your LAN Hiding place-IP masquerading NAT, PAT EncryptionTCP/IP packet filters IP address IP netmask Router Dis Tance IP routingIP routing table IP address IP netmask Router name Dist This is what happens 192.168.130.0 255.255.255.0What do the entries mean? Dynamic routing with IP/RIPWhat information is propagated by IP/RIP? IP address IP netmask Time Distance RouterLocal routing Interaction of static and dynamic tablesIP masquerading NAT, PAT Two addresses for the routerCable TV net How does IP masquerading work?Simple and inverse masquerading WorkOnly small difference is that Which protocols can be transmitted using IP masquerading?DNS forwarding Bridging RatorAutomatic address administration with Dhcp What are the filter options?Cable modem really belongs to two LANs Dhcp clientDhcp server IP address Network mask Broadcast addressHow are the addresses assigned? Default state is autoDhcp on, off or auto? IP address assignmentBroadcast address assignment Default gateway assignmentNetwork mask assignment DNS server assignmentPriority for the Dhcp server Request assignment Priority for a workstation-overwriting an assignmentOperating modes and functions Operating modes and functions Elsa MicroLink Cable Cable modem technology AccessTwo standards get around this problem StandardsOperator Work Registration in the cable networkNetwork of the cable network Cable TV net Registration Connection modes Network technologyNetwork and its components Host IP addressing Kinds of networksThis address Bytes Looks like this in bits ExamplesSame IP address, this time with another netmask IP address Netmask Remark 10.0.0.0 255.0.0.0There are two considerations when using these IP addresses IP routing and hierarchical IP addressingHost Smith External host Marketing Example Expansion through local networks Easy as possible Why a LAN is called multiprotocol-capable80-C7-6D-A4-6E That is processed by all computers in the LANLAN as easy as possible Data transfer within the LANInterface only understands MAC addresses Host Smith Data transfer from the LAN onto the Internet LAN coupling on MAC basisTechnical basics Elsa MicroLink Cable Technical data AppendixPackage contents ServiceWarranty period Warranty conditionsWarranty coverage Warranty procedureOperating mistakes Additional regulationsDeclaration of conformity TypenbezeichnungAppendix Elsa MicroLink Cable Index 17, 32 Inde7032, 40 Gateway Heap reserve 17, 18Setup TraceWireless links Inde72Symbols Description of the menu options R73R74 Description of the menu options Overview of the menusStatus Running status displays StatusDescription of the menu options R75 Status/Cable-statistics Status/Operating-timeStatus/Current-time R76 Description of the menu optionsLAN-statistics Running status displays Status/LAN-statisticsDescription of the menu options R77 Cannot be modified manually Status/Bridge-statisticsR78 Description of the menu options Bridge-statistics Running status displaysStatus/TCP-IP-statistics/ARP-statistics Status/TCP-IP-statisticsDescription of the menu options R79 These statistics include the following valuesStatus/TCP-IP-statistics/ICMP-statistics R80 Description of the menu optionsStatus/TCP-IP-statistics/IP-statistics Status/TCP-IP-statistics/TFTP-statistics Description of the menu options R81Status/TCP-IP-statistics/TCP-statistics R82 Description of the menu options Status/TCP-IP-statistics/DHCP-statisticsShrinks accordingly. It has the following layout Status/IP-router-statisticsDescription of the menu options R83 IP-router-statistics Statistics from the IP router areaProtocol LAN-tx Cable-tx R84 Description of the menu optionsStatus/IP-router-statistics/RIP-statistics IP-address IP-netmask Time Distance RouterStatus/Queue-statistics Status/Config-statisticsConfig-statistics Remote configuration statistics Description of the menu options R85R86 Description of the menu options IPr-RIP-queue-packetsDescription of the menu options R87 Status/MCNS-statisticsStatus/Init-status MCSN-statisticsStatus/DHCP-client-statistics SetupSystem configuration R88 Description of the menu optionsEntering the following command Setup/Cable-moduleSetup/LAN-module Default configuration, no name is enteredSetup/Bridge-module R90 Description of the menu optionsMAC-address field Setup/TCP-IP-moduleDescription of the menu options R91 Configuration, the TCP/IP module is activated R92 Description of the menu optionsDescription of the menu options R93 IP-address Node-ID Last-access Connect Setup/IP-router-moduleConfiguration, the IP router module is activated IP-router-module IP router module settingsDescription of the menu options R95 IP-address IP netmask Router-name DistanceR96 Description of the menu options Setup/IP-router-module/Routing-methodRouting-method Routing method settings Settings have the following meaning Setup/IP-router-module/RIP-configurationDifferent settings have the following meaning Description of the menu options R97Following layout Setup/IP-router-module/MasqueradingR98 Description of the menu options Setup/IP-router-module/firewall Description of the menu options R99R10 Description of the menu options Description of the menu options R10 Setup/SNMP-moduleSetup/DHCP-server-module On The device operates as a Dhcp serverOff The device does not operate as a Dhcp server Default value of 6000 minutes equals approximately 4 daysR102 Description of the menu options Network mask is assigned in the same way as the IP addressConfig-module Configuration module settings Setup/Config-moduleIP-address Node-ID Timeout Hostname Type Description of the menu options R103R104 Description of the menu options Firmware Display and keyboard settingsFirmware Position Status Version Date Size Index Description of the menu options R105Module Version R106 Description of the menu options This option allows you to reboot the deviceOther Other menu allows you to manage the following functions