ELSA manual Highlights of the Elsa MicroLink Cable, Node or hub?, Fast Internet, Cable network

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4Introducing the ELSA MicroLink Cable

Node or hub?

Please check the position of the Node/Hub switch when connecting the unit to the LAN:

KAs the factory default, the switch is set to 'Node'. In this setting, the device acts as a node on a network. It can, in this case, only be connected to a hub, not directly to the network card of a computer.

KSet the switch to 'Hub' if you do not wish to connect the device to a hub but directly to a workstation. In this setting the lines for sending and receiving the data are crossed.

Look at the link status LED (Link) to check if the node/hub switch is set correctly.

The highlights of the ELSA MicroLink Cable

The cable modem is a new Internet-access technology that is now competing with conventional modems, Internet modems and small ISDN routers. To take maximum advantage of your ELSA MicroLink Cable, you should know the areas and characteristics in which cable modems have the technological edge.

Fast Internet

Cable modems use a split transfer rate depending on the direction of the signals. Downstream refers to the transfer of data from the network operator to the participant, upstream is the opposite direction. This asymmetrical split is quite acceptable, since users generally receive far more information from the Internet than they send to it.

Shared media:

Multiple users share a single “cable”

Cable network

Up to 43 Mbps can be transferred downstream; upstream transfer speeds reach up to 10 Mbps.

This colossal performance is shared by up to 2000 users connected to the same cable section, however. This is referred to as the use of a shared media.

Bandwidth:

Throughput, transfer capacity

The data flow in the cable network does not take place at a constantly high volume, but in irregular intervals. Also, it's unlikely that all 2000 participants will be using the network simultaneously, so the available bandwidth is certainly adequate to ensure the fast transfer of data.

The cable network operators have the option of limiting the available bandwidth for individual participants, or offering several channels with 43 Mbps each. Please contact your network operator for further information on transfer rates and pricing models.

ELSA MicroLink Cable

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Contents Manual ELSA, Inc SonnenwegAachen 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 What does the unit look like? Introducing the Elsa MicroLink CableElsa MicroLink Cable Meanings of the specific blink codes SyncBC D E F G These LEDs show the corresponding network controller statusHighlights of the Elsa MicroLink Cable Node or hub?Fast Internet Cable networkRegional content Internet at all times-always onlineMore than just Internet 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 StepsQuick Start Quick configurations Configuration as a bridgePreparations 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 TCP/IP installation Configuring fixed IP addresses not using DhcpObtain IP addresses automatically use Dhcp Checking the IP configuration Requirements for inband configuration Configuration modesUser-friendly method inband Starting inband configuration using Elsa LANconfig Start up inband configuration using telnetConfiguration commands This command Means this For instanceSet/se/snmp/admin The Administrator How to start a trace Command to call up a trace follows this syntaxWhats happening on the line? Trace OutputsNew firmware with FirmSafe This is how FirmSafe worksExamples How to load new software Elsa LANconfigConfiguration using Snmp General TftpAccessing tables and parameters using Snmp Access protection in SnmpCommand Target/Source Function Deleting rows in tables using Snmp Appending rows to tables using SnmpIP address IP-netmask Router name Distance Error messages via Snmp trap Management Information Base MIBConfiguration modes Security for your configuration Password protectionLogin barring Operating modes and functionsAccess control via TCP/IP Security for your LANGlobally to Encryption TCP/IP packet filtersHiding place-IP masquerading NAT, PAT IP routing IP routing tableIP address IP netmask Router Dis Tance IP address IP netmask Router name Dist This is what happens 192.168.130.0 255.255.255.0Dynamic routing with IP/RIP What information is propagated by IP/RIP?What do the entries mean? IP address IP netmask Time Distance RouterLocal routing Interaction of static and dynamic tablesIP masquerading NAT, PAT Two addresses for the routerHow does IP masquerading work? Simple and inverse masqueradingCable TV net WorkWhich protocols can be transmitted using IP masquerading? DNS forwardingOnly small difference is that Bridging RatorAutomatic address administration with Dhcp What are the filter options?Dhcp client Dhcp serverCable modem really belongs to two LANs IP address Network mask Broadcast addressDefault state is auto Dhcp on, off or auto?How are the addresses assigned? IP address assignmentDefault gateway assignment Network mask assignmentBroadcast address 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 Access Two standards get around this problemCable modem technology StandardsRegistration in the cable network Network of the cable network Cable TV netOperator Work Registration Network technology Network and its componentsConnection modes Host IP addressing Kinds of networksExamples Same IP address, this time with another netmaskThis address Bytes Looks like this in bits 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 Why a LAN is called multiprotocol-capable 80-C7-6D-A4-6EEasy as possible That is processed by all computers in the LANData transfer within the LAN Interface only understands MAC addressesLAN as easy as possible Host Smith Data transfer from the LAN onto the Internet LAN coupling on MAC basisTechnical basics Elsa MicroLink Cable Technical data AppendixPackage contents ServiceWarranty conditions Warranty coverageWarranty period Warranty procedureOperating mistakes Additional regulationsDeclaration of conformity TypenbezeichnungAppendix Elsa MicroLink Cable Index Inde70 32, 40 Gateway Heap reserve17, 32 17, 18Setup TraceWireless links Inde72Symbols Description of the menu options R73R74 Description of the menu options Overview of the menusStatus Description of the menu options R75Status Running status displays Status/Operating-time Status/Current-timeStatus/Cable-statistics R76 Description of the menu optionsStatus/LAN-statistics Description of the menu options R77LAN-statistics Running status displays Status/Bridge-statistics R78 Description of the menu optionsCannot be modified manually Bridge-statistics Running status displaysStatus/TCP-IP-statistics Description of the menu options R79Status/TCP-IP-statistics/ARP-statistics These statistics include the following valuesR80 Description of the menu options Status/TCP-IP-statistics/IP-statisticsStatus/TCP-IP-statistics/ICMP-statistics Description of the menu options R81 Status/TCP-IP-statistics/TCP-statisticsStatus/TCP-IP-statistics/TFTP-statistics R82 Description of the menu options Status/TCP-IP-statistics/DHCP-statisticsStatus/IP-router-statistics Description of the menu options R83Shrinks accordingly. It has the following layout IP-router-statistics Statistics from the IP router areaR84 Description of the menu options Status/IP-router-statistics/RIP-statisticsProtocol LAN-tx Cable-tx IP-address IP-netmask Time Distance RouterStatus/Config-statistics Config-statistics Remote configuration statisticsStatus/Queue-statistics Description of the menu options R85R86 Description of the menu options IPr-RIP-queue-packetsStatus/MCNS-statistics Status/Init-statusDescription of the menu options R87 MCSN-statisticsSetup System configurationStatus/DHCP-client-statistics R88 Description of the menu optionsSetup/Cable-module Setup/LAN-moduleEntering the following command Default configuration, no name is enteredSetup/Bridge-module R90 Description of the menu optionsSetup/TCP-IP-module Description of the menu options R91MAC-address field Configuration, the TCP/IP module is activated R92 Description of the menu optionsDescription of the menu options R93 Setup/IP-router-module Configuration, the IP router module is activatedIP-address Node-ID Last-access Connect IP-router-module IP router module settingsDescription of the menu options R95 IP-address IP netmask Router-name DistanceSetup/IP-router-module/Routing-method Routing-method Routing method settingsR96 Description of the menu options Setup/IP-router-module/RIP-configuration Different settings have the following meaningSettings have the following meaning Description of the menu options R97Setup/IP-router-module/Masquerading R98 Description of the menu optionsFollowing layout Setup/IP-router-module/firewall Description of the menu options R99R10 Description of the menu options Setup/SNMP-module Setup/DHCP-server-moduleDescription of the menu options R10 On The device operates as a Dhcp serverDefault value of 6000 minutes equals approximately 4 days R102 Description of the menu optionsOff The device does not operate as a Dhcp server Network mask is assigned in the same way as the IP addressSetup/Config-module IP-address Node-ID Timeout Hostname TypeConfig-module Configuration module settings Description of the menu options R103Firmware Display and keyboard settings FirmwareR104 Description of the menu options Description of the menu options R105 Module VersionPosition Status Version Date Size Index This option allows you to reboot the device OtherR106 Description of the menu options Other menu allows you to manage the following functions