Configuring Dhcp Relay | SMC Networks SMC7204BRA instruction

Configuring DHCP Relay

First, you must configure your PCs to accept DHCP information assigned by a DHCP server:

1.Open the Windows [Control Panel] and display the computer's [Networking properties]. Configure the TCP/IP properties

to [Obtain an IP address automatically] (the actual text may vary depending on your operating system). For detailed instructions, see Quick Start, Configuring Your Computers on page 9 Next, specify the IP address of the DHCP server and select the interfaces on your network that will be using the relay service.

2.Log into the Configuration Manager, click the [LAN] tab. Then click [DHCP Relay] in the task bar. The [Dynamic Host Configuration Protocol (DHCP) Relay Configuration] page appears:

Figure 14. Dynamic Host Configuration Protocol (DHCP)

Relay Configuration Page

3.In the [DHCP Server Address] fields, type the IP address

of your ISP's DHCP server. If you do not have this number, it is not essential to enter it here. Requests for IP information from your LAN will be passed to the default gateway, which should route the request appropriately.

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SMC Networks SMC7204BRA manual Configuring Dhcp Relay, Dynamic Host Configuration Protocol Dhcp Relay Configuration

Contents

Page February Table of Contents Getting Started with the Configuration Manager Configuring the LAN PortsConfiguring Dynamic Host Configuration Protocol Configuring Network Address Translation Configuring DNS Server Addresses Configuring IP RoutesConfiguring the Routing Information Protocol Configuring the ATM Virtual Circuit Configuring PPP Interfaces Configuring EOA InterfacesConfiguring IPoA Interfaces Configuring Bridging Appendix B Viewing DSL Line Information Administrative TasksAppendix a Features Introduction Using this Document System RequirementsIntroduction Notational conventions Special messages Using this DocumentTypographical conventions Package Contents Getting to Know Adsl Barricade Hardware Description Getting to Know the Adsl BarricadeFront Panel Rear Panel Connecting the Hardware Quick Start Quick Start Connect the Adsl cable Configuring Your Computers Attach the power connectorPower up your systems Connect the Ethernet cable Windows XP Windows Windows Me Windows 95 Quick Start Windows NT Assigning static Internet Information to your PCs Logging into the Adsl Barricade Quick Configuration Configuring the Adsl BarricadeConfiguring the Adsl Barricade With your ISP Path that your connection uses to communicate with your ISP Configuration of your device PasswordYou have used to log in to Configuration Manager Bridge Default Router Settings Addresses LAN Ports on page 33 for a Internet. See ConfiguringDescription of the NAT service Getting Started with the Configuration Manager Accessing the Configuration Manager Getting Started with the Configuration Manager Login Screen Functional Layout Functional LayoutCommonly used buttons Browser window. Help is available from any main topic Home Page and System View Table System View Table Home Page and System View Table Modifying Basic System Information Daylight Modifying Basic System InformationTime Zone Committing Changes and Rebooting Committing your changes Committing Changes and Rebooting Rebooting the device using Configuration Manager Reboot from Last ConfigurationJust committed Session Configuring the LAN Port IP Address ConfiguringConnecting via Ethernet Configuring the LAN Ports LAN Configuration Configuring the LAN Port IP Address Configuring the LAN Ports Configuring the LAN Port IP Address Viewing System IP Addresses and IP Performance Statistics Viewing the Adsl Barricades IP Addresses Viewing System IP Addresses and IP Performance Statistics Viewing IP Performance Statistics Viewing IP Performance Statistics Overview of Dhcp Configuring Dynamic Host Configuration ProtocolWhat is DHCP? Adsl Barricade Dhcp modes Configuring Dynamic Host Configuration ProtocolWhy use DHCP? Guidelines for creating Dhcp server address pools Configuring Dhcp ServerConfiguring Dhcp Server Configuring Dynamic Host Configuration Protocol Adding Dhcp Server Address Pools Start IP Address End IP AddressFor distribution to your LAN computers Mac Address As explained on Domain NameAddresses in this pool. This is used for reference only Gateway Viewing, modifying, and deleting address pools Dhcp Server Pool Modify Excluding IP addresses from a pool Viewing current Dhcp address assignments Configuring Dhcp Relay NetmaskThese terms Mac Configuring Dhcp Relay Dynamic Host Configuration Protocol Dhcp Relay Configuration Setting the Dhcp Mode Dynamic Host Configuration Protocol Dhcp Setting the Dhcp Mode Configuring Network Address Translation Overview of NAT Configuring Network Address Translation Viewing NAT Global Settings and Statistics Viewing NAT Global Settings and Statistics TCP Def Timeout Active state, where the connection is being used toTime specified in TCP Idle Timeout When in the establishing state, the session will timeout NAT Rule Global Statistics Network Address Translation NAT Rule Configuration Viewing NAT Rules and Rule Statistics Viewing Current NAT Translations Viewing Current NAT Translations Is enabled Was invoked from the rule definitionProtocol TCP, UDP, Icmp Ports Number was translated Out PortsTranslated Adding NAT Rules Adding NAT Rules NAT Rule-Add Page Napt Flavor RDR rule Allowing external access to a LAN computer NAT Rule Add Page RDR Flavor Configuring Network Address Translation Adding NAT Rules Basic rule Performing 11 translations NAT Rule Add Page Basic Flavor Adding NAT Rules NAT Rule Add Page Filter Flavor Adding NAT Rules Bimap rule Performing two-way translations NAT Rule Add Page Bimap Flavor NAT Rule Add Page Pass Flavor Adding NAT Rules Assigning DNS Addresses Configuring DNS Server AddressesAbout DNS Configuring DNS Relay Configuring DNS Server Addresses Configuring DNS Relay Domain Name Service DNS Configuration Overview of IP Routes Configuring IP RoutesIP routing versus telephone switching Configuring IP Routes Hops and gateways Do I need to define IP routes? Using IP routes to define default gatewaysOverview of IP Routes Viewing the IP Routing Table IP Route Table Viewing the IP Routing Table Adding IP Routes IP Route-Add Adding IP Routes Configuring the Routing Information Protocol RIP Overview When should you configure RIP? Configuring the Adsl Barricades Interfaces with RIPConfiguring the Routing Information Protocol Configuring the Adsl Barricades Interfaces with RIP Routing Information Protocol RIP Configuration Configuring the Routing Information Protocol Configuring the Adsl Barricades Interfaces with RIP Viewing RIP Statistics RIP Global Statistics Configuring the ATM Virtual Circuit Viewing Your ATM VC Configuring the ATM Virtual Circuit Software and identify the type of traffic that can beUse an aal5-type interface Vpi Adding ATM VCs Adding ATM VCs Modifying ATM VCs Modifying ATM VCs ATM VC Interface Modify Configuring PPP Interfaces Viewing Your Current PPP Configuration Configuring PPP InterfacesInactivity TimeOut mins Ignore WAN to LAN traffic while monitoring inactivity Viewing Your Current PPP Configuration Disable, LAN hosts will use the DNS address Preconfigured in the Dhcp pool see ConfiguringUnder way e.g., password authorization or Device will acquire IP addresses for other Viewing PPP Interface Details Viewing PPP Interface Details Enabled RebootedService Name Each requiring a different login and other By changing the Configuration Manager settings With the timeout period specified on the PPPOn the user name and/or password provided ISP issued a special packet type to terminate Adding a PPP Interface Definition PPP Interface Add Modifying and Deleting PPP Interfaces Modifying and Deleting PPP Interfaces 114 Configuring EOA Interfaces Overview of EOA Viewing Your EOA Setup Configuring EOA Interfaces Viewing Your EOA Setup Default Route Enable or disable the interface a red ball may indicate aProblem with the DSL connection Adding EOA Interfaces Adding EOA Interfaces EOA Interface Add 120 Configuring Ipoa Interfaces Viewing Your IPoA Interface Setup Configuring IPoA Interfaces Enable or disable the interface a down interface may Indicate a problem with the DSL connectionAdding IPoA Interfaces Adding IPoA Interfaces 124 Configuring Bridging Overview of Bridges Configuring Bridging Defining Bridge Interfaces When to Use the Bridging FeatureWhen to Use the Bridging Feature 128 Deleting a Bridge Interface Deleting a Bridge Interface Configuring Firewall Settings Configuring Global Firewall Settings Configuring Firewall Settings Configuring Global Firewall Settings Its automatic timed expiration Managing the Black ListID assigned to the rule Configuring IP Filters and Blocked Protocols Configuring IP Filters Configuring IP Filters and Blocked Protocols Viewing Your IP Filter Configuration Configuring IP Filters Configuring IP Filter Global Settings Creating IP Filter Rules External computers from accessing your LAN That are incoming or outgoing on the selected interfaceIncoming refers to packets coming from the LAN Outgoing refers to packets going to the Internet Choosing the appropriate interface for various rule types Option is valid only for the outgoing direction Log Option to Enable if you configure a Log Tag SecurityLow, then the rule will be inactive Blacklist Rule to be invoked on packets containing Any any source IP addressLt any source IP address that is numerically less than Specified address Unwelcome attempt to gain access to a network Store StateAn ongoing communication, etc. This option provides Received in the anticipated state. Such packets can signify That have options specified in their packet headers IP filter rule examples Example 146 Viewing IP Filter Statistics Managing Current IP Filter Sessions IP Filter Rule Statistics Blocked Protocols Blocked ProtocolsFilter rule, are assigned a session index Time to expire 150 Address Resolution Protocol. Computers on a LAN use ARP to Computers when they only know their IP addressesYour ISP before blocking this protocol Is often used for handling e-mail, mailing lists Large networks Viewing DSL Line Information DSL Status Viewing DSL Line Information DSL Parameter 155 156 Changing Login Passwords Administrative TasksConfiguring User Names and Passwords Administrative Tasks User Configuration Viewing the Alarm Table Viewing System AlarmsViewing System Alarms Image Upgrade Upgrading the Software File Using DiagnosticsUsing Diagnostics 162 Overview of IP port numbers Modifying Port SettingsModifying Port Settings Modifying the Adsl Barricade’s port numbers 165 Structure of an IP address Appendix aIP Addresses Appendix a Network ID Host ID Network classes Network classes Subnet masks Subnet masks Definition binary numbers Appendix BBinary Numbers Definition bit and byte Appendix BBits and bytes Troubleshooting Troubleshooting Internet Access My PC cannot access Internet My LAN PCs cannot display web pages on the Internet My changes to Configuration Manager are not being retained Diagnosing Problem using IP Utilities 179 180 Technical Specifications Technical Specifications Chap Environmental Operating Range Power DissipationOperating System Support Power Input WeightDimensions Safety Analog AuthenticateTerminology Terminology Digital Domain name DownloadEthernet Filtering Firewall GbpsHop Hop count Host In-line filterInternet Intranet 191 Mask MbpsMicrofilter NAT rule Port Network maskPacket Remote Pots splitterProtocol Routing RuleSplitter Splitterless Subnet Subnet mask Upstream TelnetTwisted pair Web browser Web Web site FCC Part CompliancesFCC Class B Compliances EC Conformance Declaration Class B Safety Compliance Wichtige Sicherheitshinweise Germany Compliances SMCs Limited Warranty Statement Legal Information Contacts Legal Information and Contacts Limitation of Liability Is subject to change without notice