CNet Technology CNIG904S manual Chapter, What Dhcp Does, Using the Broadband Routers Dhcp Server

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Chapter 5	5
DHCP

This Chapter covers the use of DHCP, using either an existing DHCP Server or the Broadband Router's DHCP Server function.

Overview

If your LAN does not use DHCP, and you do not wish to use DHCP, you can ignore this chapter.

What DHCP Does

A DHCP (Dynamic Host Configuration Protocol) server allocates a valid IP address to a DHCP client (PC or device) upon request.

•The client request is made when the client device boots.

•The DHCP Server provides the Gateway and DNS addresses to the client, as well as allocating an IP Address.

•Windows 95/98/ME include all the software required to act as a DHCP client. This is the default Windows setting for TCP/IP.

•The Broadband Router can act as a DHCP server.

Using the Broadband Router's DHCP Server

This is the default setting. The DHCP Server settings are on the LAN screen. On this screen, you can:

•Enable or Disable the Broadband Router's DHCP Server function.

•Set the range of IP Addresses allocated to PCs by the DHCP Server function.

You can assign Fixed IP Addresses to some devices while using DHCP, provided that the Fixed IP Addresses are NOT within the range used by the DHCP Server.

Using another DHCP Server

You can only use one (1) DHCP Server. If you wish to use another DHCP Server, rather than the Broadband Router’s, the following procedure is required.

1.Disable the DHCP Server feature in the Broadband Router. This setting is on the LAN screen.

2.Configure the DHCP Server to provide the Broadband Router’s IP Address as the Default Gateway.

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Contents User’s Guide Shared Broadband Internet AccessTable of Contents Broadband Router Overview General Problems Internet AccessIntroduction Broadband Router FeaturesLAN Features Configuration & Management Internet Access FeaturesSecurity Features Advanced Internet FunctionsPackage Contents Rear Panel Physical DetailsTop Mounted LEDs DIP Switch Setting Description DIP SwitchesRestore Default IP Address and Clear Password Installation Procedure InstallationChoose an Installation Site RequirementsCheck the LEDs Power UpConnect Adsl or Cable Modem To Do this Refer to ConfigurationOverview Preparation Configuration ProgramConnecting to the Broadband Router Navigation & Data Input If you cant connectLAN Screen LAN ConfigurationData LAN Screen IP AddressRouting Table Dhcp ServerDNS Domain Name Server WAN Direct Connection WAN ConfigurationTip Data WAN Direct ConnectionButtons IP AddressData WAN PPPoE WAN PPPoEAccount OptionsWAN Status Direct Connection WAN StatusData WAN StatusConnection Log WAN Status PPPoEStatus Data Message Description Connection Log MessagesData LAN/Device Status LAN/Device StatusDevice LAN PortStatus To check your PCs TCP/IP Settings PC ConfigurationTCP/IP Settings Using Specify an IP Address Using DhcpDNS Tab Win 95/98 Accessing AOL Internet Access ConfigurationMacintosh Configuration Using another Dhcp Server Using the Broadband Routers Dhcp ServerChapter What Dhcp DoesTo Configure your PCs to use Dhcp Routing Broadband Router ConfigurationUsing this Screen Destination Routing Table DataGateway InterfaceRouting Example Router ConfigurationLocal Router Other Routers on the Local LANFor Router Bs Default Route For Router As Default RouteFor the Broadband Routers Routing Table Entry 1 SegmentDevice Options PasswordWhen prompted for the password, leave the User Name blank To connect from a remote PC via the Internet NAT Network Address TranslationRemote Management Advanced Internet Screen Advanced InternetSpecial Internet Applications Using a Special ApplicationSpecial Applications Screen At any time, only one 1 PC can use each Special ApplicationConfiguration Data from Service Provider Remote PC Virtual ServersIP Address seen by Internet Users Types of Virtual ServersWAN IP Address Virtual Server ConfigurationType LAN IP AddressTo Modify Edit a defined Server User Defined Virtual ServersTo Delete a defined Server To List all ServersDetails Connecting to the Virtual ServersDMZ Screen Configuring the DMZEnable DMZ EnableFeature DataTo use this feature Access ControlSecurity Groups To Change Access for an Existing GroupOperations To Define a Security GroupPacket Filter Table Access Rights Internet Access for this GroupTo Add a New PC PCsTo Delete an Existing PC To Change an Existing PCs DetailsFilters TCP Filters TCP PacketsPort No UDP FiltersGeneral Problems TroubleshootingInternet Access Broadband Router Specifications