Operating modes and functions

Operating modes and functions 45

The computer has made its initial request. The DHCP server verifies the uniqueness of the address that is to be assigned to the computer.

Kunknown

While verifying uniqueness, it was determined that the address has already been assigned to another computer. Unfortunately, the DHCP server has no means of obtaining additional information on this computer.

Kstatus

A computer has informed the DHCP server that it has a fixed IP address. This address can no longer be used.

Kdynamic

The DHCP server assigned an address to the computer.

ELSA MicroLink Cable

Page 53

Image 53

ELSA Cable manual Operating modes and functions

Contents

Manual Sonnenweg ELSA, IncAachen Germany Introducing the Elsa MicroLink Cable Thank you for placing your trust in this Elsa productPage Elsa Cable Modem Content VI Content Setup/SNMP-module Viii Content Elsa MicroLink Cable What does the unit look like?Introducing the Elsa MicroLink Cable Sync Meanings of the specific blink codes These LEDs show the corresponding network controller status BC D E F G Node or hub? Highlights of the Elsa MicroLink CableFast Internet Cable network Internet at all times-always online Regional contentMore than just Internet Backbone Proxy servers CE and FCC CE conformity and FCC radiation standard Introducing the Elsa MicroLink Cable Elsa MicroLink Cable Installation and configuration First Steps Configuring the Elsa MicroLink Cable Preparations Quick Start Quick configurationsConfiguration as a bridge LAN Off you go into the Web with a whole new sensation of speed Configuration as a router On 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 Start up inband configuration using telnet Starting inband configuration using Elsa LANconfig This command Means this For instance Configuration commands Set/se/snmp/admin The Administrator Command to call up a trace follows this syntax How to start a traceWhats happening on the line? Trace Outputs Examples New firmware with FirmSafeThis is how FirmSafe works Elsa LANconfig How to load new software Tftp Configuration using Snmp General Command 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 Management Information Base MIB Error messages via Snmp trap Configuration modes Password protection Security for your configurationLogin barring Operating modes and functions Globally 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 192.168.130.0 255.255.255.0 IP address IP netmask Router name Dist This is what happens What information is propagated by IP/RIP? Dynamic routing with IP/RIPWhat do the entries mean? IP address IP netmask Time Distance Router Interaction of static and dynamic tables Local routing Two addresses for the router IP masquerading NAT, PAT Simple and inverse masquerading How does IP masquerading work?Cable TV net Work Only small difference is that Which protocols can be transmitted using IP masquerading?DNS forwarding Rator Bridging What are the filter options? Automatic address administration with Dhcp Dhcp server Dhcp clientCable modem really belongs to two LANs IP address Network mask Broadcast address Dhcp on, off or auto? Default state is autoHow are the addresses assigned? IP address assignment Network mask assignment Default gateway assignmentBroadcast address assignment DNS server assignment Priority for a workstation-overwriting an assignment Priority for the Dhcp server Request assignment Operating modes and functions Operating modes and functions Elsa MicroLink Cable Two standards get around this problem AccessCable modem technology Standards Operator Work Registration in the cable networkNetwork of the cable network Cable TV net Registration Connection modes Network technologyNetwork and its components Host Kinds of networks IP addressing This address Bytes Looks like this in bits ExamplesSame IP address, this time with another netmask 10.0.0.0 255.0.0.0 IP address Netmask Remark IP routing and hierarchical IP addressing There are two considerations when using these IP addresses Host Smith External host Marketing Example Expansion through local networks 80-C7-6D-A4-6E Why a LAN is called multiprotocol-capableEasy as possible That is processed by all computers in the LAN LAN as easy as possible Data transfer within the LANInterface only understands MAC addresses Host Smith LAN coupling on MAC basis Data transfer from the LAN onto the Internet Technical basics Elsa MicroLink Cable Appendix Technical data Service Package contents Warranty coverage Warranty conditionsWarranty period Warranty procedure Additional regulations Operating mistakes Typenbezeichnung Declaration of conformity Appendix Elsa MicroLink Cable Index 32, 40 Gateway Heap reserve Inde7017, 32 17, 18 Trace Setup Inde72 Wireless links Description of the menu options R73 Symbols Overview of the menus R74 Description of the menu options Status Running status displays StatusDescription of the menu options R75 Status/Current-time Status/Operating-timeStatus/Cable-statistics R76 Description of the menu options LAN-statistics Running status displays Status/LAN-statisticsDescription of the menu options R77 R78 Description of the menu options Status/Bridge-statisticsCannot be modified manually Bridge-statistics Running status displays Description of the menu options R79 Status/TCP-IP-statisticsStatus/TCP-IP-statistics/ARP-statistics These statistics include the following values Status/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 Status/TCP-IP-statistics/DHCP-statistics R82 Description of the menu options Description of the menu options R83 Status/IP-router-statisticsShrinks accordingly. It has the following layout IP-router-statistics Statistics from the IP router area Status/IP-router-statistics/RIP-statistics R84 Description of the menu optionsProtocol LAN-tx Cable-tx IP-address IP-netmask Time Distance Router Config-statistics Remote configuration statistics Status/Config-statisticsStatus/Queue-statistics Description of the menu options R85 IPr-RIP-queue-packets R86 Description of the menu options Status/Init-status Status/MCNS-statisticsDescription of the menu options R87 MCSN-statistics System configuration SetupStatus/DHCP-client-statistics R88 Description of the menu options Setup/LAN-module Setup/Cable-moduleEntering the following command Default configuration, no name is entered R90 Description of the menu options Setup/Bridge-module MAC-address field Setup/TCP-IP-moduleDescription of the menu options R91 R92 Description of the menu options Configuration, the TCP/IP module is activated Description of the menu options R93 Configuration, the IP router module is activated Setup/IP-router-moduleIP-address Node-ID Last-access Connect IP-router-module IP router module settings IP-address IP netmask Router-name Distance Description of the menu options R95 R96 Description of the menu options Setup/IP-router-module/Routing-methodRouting-method Routing method settings Different settings have the following meaning Setup/IP-router-module/RIP-configurationSettings have the following meaning Description of the menu options R97 Following layout Setup/IP-router-module/MasqueradingR98 Description of the menu options Description of the menu options R99 Setup/IP-router-module/firewall R10 Description of the menu options Setup/DHCP-server-module Setup/SNMP-moduleDescription of the menu options R10 On The device operates as a Dhcp server R102 Description of the menu options Default value of 6000 minutes equals approximately 4 daysOff The device does not operate as a Dhcp server Network mask is assigned in the same way as the IP address IP-address Node-ID Timeout Hostname Type Setup/Config-moduleConfig-module Configuration module settings Description of the menu options R103 R104 Description of the menu options Firmware Display and keyboard settingsFirmware Position Status Version Date Size Index Description of the menu options R105Module Version Other This option allows you to reboot the deviceR106 Description of the menu options Other menu allows you to manage the following functions