ELSA Cable Manual do Utilizador

ManualMELSA MicroLink TM Cable

Introducing the ELSA MicroLink CableELSA MicroLink Cable2ONThis LED flashes once when the power supply is switched on. After the self-test, eitheran

Description of the menu optionsELSA MicroLink CableR92OperatingThe TCP/IP module of the router may be activated or deactivated here. In the defaultco

Description of the menu optionsELSA MicroLink CableR93If such an IP address already exists in the network, shut down the device using theaddress for t

Description of the menu optionsELSA MicroLink CableR94The entries in the ARP table might, for example, have the following appearance ifdifferent devic

Description of the menu optionsELSA MicroLink CableR95IP-routing-tableThe routing table can contain a maximum of 128 entries of destination networkadd

Description of the menu optionsELSA MicroLink CableR96sends all other data packets into the cable network (insofar as these are not in forbiddenareas)

Description of the menu optionsELSA MicroLink CableR97Setup/IP-router-module/RIP-configurationThis option allows you to enter settings for the managem

Description of the menu optionsELSA MicroLink CableR98An IP-RIP routing table might, for example, have the following appearance:Cable-RIPLAN-RIPSelect

Description of the menu optionsELSA MicroLink CableR99telnet 192.38.50.100:27to connect directly to a news server that can be reached via a router wit

Description of the menu optionsELSA MicroLink CableR100The setting all filters out every packet from the specified source network or to thedestination

Description of the menu optionsELSA MicroLink CableR101Network masks and IP addresses of 0.0.0.0 can be used as “wildcards“. Specifiedcomputers and ne

Introducing the ELSA MicroLink CableELSA MicroLink Cable3LAN-Tx, -Rx,LAN-Coll, -LinkThese LEDs show the corresponding network controller status:Now tu

Description of the menu optionsELSA MicroLink CableR102Off: The device does not operate as a DHCP server.Auto: The device regularly checks whether the

Description of the menu optionsELSA MicroLink CableR103Default-lease-time-minute(s)Here you can enter the period of validity that is assigned if the h

Description of the menu optionsELSA MicroLink CableR104Password-requiredThis specifies whether a new password should be requested every time a configu

Description of the menu optionsELSA MicroLink CableR105Version tableThe version table displays the firmware version and serial number of the device.

Description of the menu optionsELSA MicroLink CableR106– If the device no longer responds and it is therefore impossible to log in, thefirmware automa

Introducing the ELSA MicroLink CableELSA MicroLink Cable4Node or hub?Please check the position of the Node/Hub switch when connecting the unit to the

Introducing the ELSA MicroLink CableELSA MicroLink Cable5BackboneBackbone: direct connection to the InternetThe simple transfer rate between the netwo

Introducing the ELSA MicroLink CableELSA MicroLink Cable6Network operators can take advantage of this structure to provide regional content inaddition

Introducing the ELSA MicroLink CableELSA MicroLink Cable7CE conformity and FCC radiation standardCEThis equipment has been tested and found to comply

Introducing the ELSA MicroLink CableELSA MicroLink Cable8

Installation and configurationELSA MicroLink Cable9EnglishInstallation and configurationThe aim of this chapter is to get you online as quickly as pos

Installation and configurationELSA MicroLink Cable10EnglishFirst StepsGive it some powerFirst, give your device the power it needs through the power s

Installation and configurationELSA MicroLink Cable11EnglishQuick Start: Quick configurationsWe're sure that after you've installed the hardw

© 1999 ELSA AG, Aachen (Germany)While the information in this manual has been compiled with great care, it may not be deemed anassurance of product ch

Installation and configurationELSA MicroLink Cable12EnglishIn this example, only one computer is connected to the Internet via the ELSA MicroLinkCable

Installation and configurationELSA MicroLink Cable13EnglishThe ELSA MicroLink Cable is now ready for use in bridge mode. Open your Web browser,and of

Installation and configurationELSA MicroLink Cable14Englishb In order for a device to be able to assign addresses to other devices on a TCP/IPnetwork,

Installation and configurationELSA MicroLink Cable15Englishf Go then to the 'Bridge' section and deactivate the option 'Bridge' on

Installation and configurationELSA MicroLink Cable16EnglishAssign fixed IP addresses in router mode with activated IP masquerading only.Otherwise, add

Configuration modesELSA MicroLink Cable17EnglishConfiguration modesELSA cable modems are always delivered with up-to-date software in which a numberof

Configuration modesELSA MicroLink Cable18EnglishStarting inband configuration using ELSA LANconfigAfter the installation (double-click on 'autoru

Configuration modesELSA MicroLink Cable19EnglishConfiguration commands Enter commands and path specifications using the normal DOS or UNIX conventions

Configuration modesELSA MicroLink Cable20EnglishText entries with spaces are only accepted if they are placed in quotation marks, e.g.set/se/snmp/admi

Configuration modesELSA MicroLink Cable21EnglishWhat's happening on the line? Trace OutputsTrace outputs may be used to monitor the internal proc

PrefaceThank you for placing your trust in this ELSA product.With the ELSA MicroLink Cable, you have chosen a modem that will open the door to theInte

Configuration modesELSA MicroLink Cable22EnglishAny appended parameters are processed from left to right. This means that it is possibleto call a par

Configuration modesELSA MicroLink Cable23English– The device no longer responds after loading the new firmware. If an error occursduring the upload,

Configuration modesELSA MicroLink Cable24EnglishTFTPWith TFTP you can use the writeflash command to install new firmware. To send a newfirmware versi

Configuration modesELSA MicroLink Cable25EnglishSNMP V.1 has only a very limited set of commands at its disposal, as the table belowshows:These comman

Configuration modesELSA MicroLink Cable26EnglishBear in mind that the access protection given by the community mechanism in the SNMPV.1 is only very l

Configuration modesELSA MicroLink Cable27Englishb Open the corresponding table. If the table is empty, then empty columns will bedisplayed.c Click on

Configuration modesELSA MicroLink Cable28English

Operating modes and functionsELSA MicroLink Cable29Operating modes and functionsThis section is an introduction to the functions and operating modes o

Operating modes and functionsELSA MicroLink Cable30a password to gain access to a network, a computer or another device. In order to do so,a computer

Operating modes and functionsELSA MicroLink Cable31EncryptionSince cable modems transfer data via a cable shared by many participants, data shouldbe e

Operating modes and functionsELSA MicroLink Cable32But this provokes objections from the network manager responsible for the security ofdata on the co

Operating modes and functionsELSA MicroLink Cable33What do the various entries on the list mean? K IP addresses and IP network masksThis is the addres

Operating modes and functionsELSA MicroLink Cable34Dynamic routing with IP/RIPIn addition to the static routing table ELSA routers also have a dynamic

Operating modes and functionsELSA MicroLink Cable35automatically incremented when the corresponding amount of time has elapsed. Thedistance is set to

Operating modes and functionsELSA MicroLink Cable36Module/Local Routing On menu). This tells the router in your device to sendthe data packet to the

Operating modes and functionsELSA MicroLink Cable37The cable modem is therefore assigned a cable IP address and a LAN IP address, eachwith its own app

Operating modes and functionsELSA MicroLink Cable38FTP server. The router knows the IP address of the FTP server in the LAN from the entryin the serv

Operating modes and functionsELSA MicroLink Cable39K Initially the router checks whether a DNS server has been entered in its ownsettings (in configur

Operating modes and functionsELSA MicroLink Cable40What are the filter options? You may not always wish to transfer all data. Much of the data which

Operating modes and functionsELSA MicroLink Cable41The cable modem really belongs to two LANs: K On one side it is a part of the LAN of the cable netw

ContentELSA Cable ModemVEnglishContentIntroducing the ELSA MicroLink Cable ...1The E

Operating modes and functionsELSA MicroLink Cable42DHCP – 'on', 'off' or 'auto'?The DHCP server in the devices of ELSA c

Operating modes and functionsELSA MicroLink Cable43and the DHCP server attempts to reassign it this address if it has not already beenassigned to anot

Operating modes and functionsELSA MicroLink Cable44For each request, a host can ask for a specific period of validity. However, a DHCP servercan also

Operating modes and functionsELSA MicroLink Cable45The computer has made its initial request. The DHCP server verifies the uniquenessof the address t

Operating modes and functionsELSA MicroLink Cable46

Technical basicsELSA MicroLink Cable47Technical basicsThis chapter is a short introduction into the technology used by your device. Networkprofession

Technical basicsELSA MicroLink Cable48computer. On the other side is the operator of the broadband cable network who wouldlike to provide more than j

Technical basicsELSA MicroLink Cable49programs on their respective channels. Specific channels are also set up for thetransmission of Internet conten

Technical basicsELSA MicroLink Cable50Network technology This section will give you a brief introduction to the basics of network technology. Thesede

Technical basicsELSA MicroLink Cable51Access to the Internet is also established through point-to-point connections. Eventhough the data packets are

ContentELSA Cable ModemVIEnglishSecurity for your LAN... 30En

Technical basicsELSA MicroLink Cable52Kinds of networks ProtocolAn important prerequisite for communications between computers is a commonlanguage amo

Technical basicsELSA MicroLink Cable53the actual information to be transmitted (useful data), the data packet also containsaddress and control informa

Technical basicsELSA MicroLink Cable54And you can also see that there are more bits available to identify the individual hosts ina connected network i

Technical basicsELSA MicroLink Cable55There are two considerations when using these IP addresses:K The IP addresses used in a private network should n

Technical basicsELSA MicroLink Cable56As an example, think of a company with one large network, in which the differentdivisions are incorporated as sm

Technical basicsELSA MicroLink Cable57All the router has to remember is that every address beginning with '192.168.100' islocated within the

Technical basicsELSA MicroLink Cable58MAC addressSpecific LAN addresses hardwired into the interfaces by their manufacturers are used tomanage the tra

Technical basicsELSA MicroLink Cable59i.e. all it has to remember is the network address and the netmask of the subnet in theLAN. In contrast, the hos

Technical basicsELSA MicroLink Cable60not find an entry in the table for a particular IP address (in our example '137.226.4.20'), itsends an

Technical basicsELSA MicroLink Cable61EB'” in the ARP table and tells its LAN interface: “Send this IP packet to the computerwith the MAC address

ContentELSA Cable ModemVIIEnglishStatus/IP-router-statistics ... 83Status/

Technical basicsELSA MicroLink Cable62

AppendixELSA MicroLink Cable63AppendixTechnical data Technical dataELSA MicroLink CableLAN interface Ethernet IEEE 802.3, 10Base-T (Twisted Pair, RJ45

AppendixELSA MicroLink Cable64Package contents Accessories: AC adapter, F-to-IEC169-2 adapter, connector cable for cable TV network, 10Base-T cableSof

AppendixELSA MicroLink Cable65Warranty conditionsThe ELSA AG warranty, valid as of June 01, 1998, is given to purchasers of ELSA products in addition

AppendixELSA MicroLink Cable66c) if the damage occurred due to incorrect handling, especially to non-observance of the systemdescription and the opera

AppendixELSA MicroLink Cable67Declaration of conformityKONFORMITÄTSERKLÄRUNGDECLARATION OF CONFORMITYDiese Erklärung gilt für folgendes Erzeugnis:This

AppendixELSA MicroLink Cable68

IndexELSA MicroLink Cable69IndexKAAccess control ...30Access protocols ...

IndexELSA MicroLink Cable70K GGateway ...32, 40, 43K HHeap reserve ...

IndexELSA MicroLink Cable71Node ...4K OObjects ...

ContentELSA Cable ModemVIIIEnglish

IndexELSA MicroLink Cable72Trap ...27Trap-IP ...

Description of the menu optionsELSA MicroLink CableR73Description of the menu optionsThe menu tree for ELSA MicroLink Cable configuration is divided u

Description of the menu optionsELSA MicroLink CableR74Overview of the menusSetupNameCable-moduleLAN-moduleBridge-moduleTCP-IP-moduleIP-router-moduleSN

Description of the menu optionsELSA MicroLink CableR75StatusThe Status menu contains information on the current status and the internal sequencesof op

Description of the menu optionsELSA MicroLink CableR76Status/Operating-timeThe operating time of the router since it was last started is displayed her

Description of the menu optionsELSA MicroLink CableR77Status/LAN-statisticsSimilarly to the previous menu option, this option allows you to display th

Description of the menu optionsELSA MicroLink CableR78Status/Bridge-statisticsThis option allows you to display statistical information relating to th

Description of the menu optionsELSA MicroLink CableR79Status/TCP-IP-statisticsThe TCP/IP-related statistics are shown here, broken down according to t

Description of the menu optionsELSA MicroLink CableR80Status/TCP-IP-statistics/IP-statisticsThese statistics include the following values:Status/TCP-I

Description of the menu optionsELSA MicroLink CableR81Status/TCP-IP-statistics/TCP-statisticsThese statistics include the following values:Status/TCP-

Introducing the ELSA MicroLink CableELSA MicroLink Cable1Introducing the ELSA MicroLink CableInternet access is the main application for the ELSA Micr

Description of the menu optionsELSA MicroLink CableR82Status/TCP-IP-statistics/DHCP-statisticsThese statistics include the following values:TFTP-cable

Description of the menu optionsELSA MicroLink CableR83Table-DHCPThere are entries with DHCP information in the DHCP table. It contains 16 entries (or

Description of the menu optionsELSA MicroLink CableR84Protocol-tableThe protocol table also supplies valuable information on the volume of packetstran

Description of the menu optionsELSA MicroLink CableR85Status/Config-statisticsThis menu allows you to display the statistics from the remote configura

Description of the menu optionsELSA MicroLink CableR86TFTP-server-queue-packets Number of packets in the receive queue of the TFTP server.DHCP-server-

Description of the menu optionsELSA MicroLink CableR87Status/MCNS-statisticsStatus/Init-status/MCSN-statisticsMCNS-T1-timeouts Number of timeouts whil

Description of the menu optionsELSA MicroLink CableR88Status/DHCP-client-statisticsSetupThis menu allows you to query and modify all the system parame

Description of the menu optionsELSA MicroLink CableR89NameHere you can enter the device name (maximum 16 characters). The set of charactersavailable

Description of the menu optionsELSA MicroLink CableR90Setup/Bridge-moduleThis menu allows you to select the settings necessary for bridge mode. The m

Description of the menu optionsELSA MicroLink CableR91The pos setting for broadcast or multicast may lead to higher charges depending on thepricing mo