Netopia manual Conﬁguration, Dhcp address serving, Netopia R7200 Dhcp server characteristics

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Understanding IP Addressing B-7

Number of Devices (other than

Netopia R7200) on Local Network

Largest Possible Ethernet Subnet

Mask

	30-61	255.255.255.192

	62-125	255.255.255.128

	125-259	255.255.255.0

Conﬁguration

This section describes the speciﬁc IP address lease, renew, and release mechanisms for both the Mac and PC, with either DHCP or MacIP address serving.

DHCP address serving

Windows 95 workstation:

■The Win95 workstation requests and renews its lease every half hour.

■The Win95 workstation does NOT relinquish its DHCP address lease when the machine is shut down.

■The lease can be manually expired using the WINIPCFG program, a command line program executable from the DOS prompt or from the START:RUN menu on a Windows-based computer.

Windows 3.1 workstation (MSTCP Version 3.11a):

■The Win3.1 workstation requests and renews its lease every half hour.

■The Win3.1 workstation does NOT relinquish its DHCP address lease when the user exits Windows and goes to DOS.

■The lease can be manually expired by typing IPCONFIG/RELEASE from a DOS window within Windows or from the DOS prompt.

Macintosh workstation (Open Transport Version 1.1 or later):

■The Mac workstation requests and renews its lease every half hour.

■The Mac workstation relinquishes its address upon shutdown in all but one case. If the TCP/IP control panel is set to initialize at startup, and no IP services are used or the TCP/IP control panel is not opened, the DHCP address will NOT be relinquished upon shutdown. However, if the TCP/IP control panel is opened or if an IP application is used, the Mac WILL relinquish the lease upon shutdown.

■If the TCP/IP control panel is set to acquire an address only when needed (therefore a TCP/IP application must have been launched to obtain a lease) the Mac WILL relinquish its lease upon shutdown every time.

Netopia R7200 DHCP server characteristics

■The Netopia R7200 ignores any lease-time associated with a DHCP request and automatically issues the DHCP address lease for one hour.

■The number of devices a Netopia R7200 can serve DHCP to is 512. This is imposed by global limits on the size of the address serving database, which is shared by all address serving functions active in the router.

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Contents Netopia R7200 Sdsl Router Part Number Contents Part II Advanced Configuration Contents Aurp Snmp Xmodem Part III Appendixes User’s Reference Guide Part I Getting Started User’s Reference Guide Features and capabilities Chapter IntroductionOverview How to use this guide Finding an Internet service provider Chapter Setting Up Internet ServicesUnique requirements Setting up a Netopia R7200 account Obtaining an IP addressPricing and support Endorsements Deciding on an ISP accountLocal LAN IP address information to obtain Obtaining information from the ISPWith Network Address Translation Without Network Address TranslationUser’s Reference Guide Find a location Chapter Making the Physical ConnectionsWhat you need Identify the connectors and attach the cablesYour router on Netopia R7200 Sdsl Router back panel portsNetopia R7200 LED front panel Netopia R7200 Sdsl Router status lightsReadying computers on your local network Chapter Connecting to Your Local Area NetworkUser’s Reference Guide Connecting to an Ethernet network 10Base-T Adding an external modem Connecting to a LocalTalk network Chapter Setting up your Router with the SmartStart Wizard Before running SmartStart SmartStart Wizard conﬁguration screens Setting up your Router with the SmartStart WizardEasy option Advanced setupAdvanced option Conﬁguration screen on Conﬁguration tab Dynamic conﬁguration recommendedStatic conﬁguration optional Add. Repeat this process for the secondary DNS TCP/IP Conﬁguring TCP/IP on Macintosh computersTCP/IP or MacTCP Dynamic conﬁguration using MacIP optional Setting up your Router with the SmartStart Wizard User’s Reference Guide Chapter Console-Based Management Connecting through a Telnet session Conﬁguring Telnet software Connecting a console cable to your routerPC ANSI-BBS Navigating through the console screensChapter Easy Setup Easy Setup console screensAccessing the Easy Setup console screens See Appendix A, Troubleshooting, for more suggestions Quick Easy Setup connection path Main Menu appears Sdsl Line ConﬁgurationPrevious Screen Next Screen Easy Setup ProﬁleIP Easy Setup Easy Setup Security Conﬁguration Previous Screen To Main Menu Part II Advanced Configuration User’s Reference Guide WAN conﬁguration Chapter WAN and System ConfigurationATM VPI ATM VCI Creating a new Connection Proﬁle IPX Profile Parameters Remote IPX Network Datalink PPP/MP Options Data Compression Default proﬁle Main Menu Default Proﬁle screen appears IP parameters default proﬁle screen System conﬁguration screens IPX parameters default proﬁle screenNavigating through the system conﬁguration screens System conﬁguration features Filter sets ﬁrewalls Network protocols setupIP address serving Date and timeConsole conﬁguration Snmp Simple Network Management Protocol Upgrade feature setSecurity LoggingInstalling the Syslog client User’s Reference Guide Chapter Line Backup Backup Conﬁguration screen appears Atdt Backup Conﬁguration screenIP Setup screen Connection Proﬁles Using Scheduled Connections with BackupScheduled Connections screen appears Management/Statistics Force Recovery QuickView Event LogsSnmp Support User’s Reference Guide Network Address Translation features Chapter IP Setup and Network Address TranslationHOW NAT Works Previous Screen Using Network Address TranslationV2 multicast Numbered Sdsl WAN1 Associating port numbers with nodesAdvanced IP/IPX router conﬁguration options Data Link Options IP Setup and Network Address Translation Network Address Translation guidelines IP setup User’s Reference Guide Select Add Export. The Add Exported Service screen appears Select Service. a pop-up menu of services and ports appears IP subnets User’s Reference Guide Static routes Viewing static routes Static Routes screen will appearAdding a static route Rules of static route installation Modifying a static routeDeleting a static route Main Menu System Configuration IP Address Serving 176.163.222.10 Dhcp NetBios Options Serve Bootp Clients IP Address Pools IP Setup and Network Address Translation Dhcp NetBIOS Options NetBios Type MacIP KIP forwarding setup You have ﬁnished your IP setup User’s Reference Guide IPX features Chapter IPX SetupIPX deﬁnitions Internetwork Packet Exchange IPXIPX address Service Advertising Protocol SAPSocket Routing Information Protocol RIPNetBIOS IPX setup screenIPX spooﬁng Default Gateway Address IPX routing tables User’s Reference Guide Chapter AppleTalk Setup AppleTalk networksAppleTalk protocol AT Routing Table Routers and seeding MacIPInstalling AppleTalk Upgrade Feature Set Conﬁguring AppleTalk EtherTalk setupLocalTalk setup Aurp setup Viewing Aurp partnersAurp Free Trade Zone Modifying an Aurp partner Adding an Aurp partnerDeleting an Aurp partner Receiving Aurp connectionsConﬁguring Aurp Options Aurp Options Tickle Interval Hhmmss User’s Reference Guide Quick View status overview Chapter Monitoring ToolsGeneral status Status lights Current statusGeneral Statistics Statistics & LogsEvent histories Physical InterfaceNetwork Interface WAN Event History Device Event History Routing tablesIP routing table IPX routing table IPX Sap Bindery tableAppleTalk routing table Served IP Addresses IP Address Lease Management screen appears Snmp System InformationCommunity strings Snmp Setup screenSnmp traps Viewing IP trap receivers Setting the IP trap receiversModifying IP trap receivers Deleting IP trap receiversWeb-based management pages Event History pages WAN Event History Device Event History User’s Reference Guide Chapter Security Suggested security measuresUser accounts Protecting the conﬁguration screens Protecting the Security Options screenDial-in console access Telnet access Enable SmartStart/SmartView/Web serverAbout ﬁlters and ﬁlter sets What’s a ﬁlter and what’s a ﬁlter set?Filter priority How ﬁlter sets workHow individual ﬁlters work ﬁltering rule Parts of a ﬁlterPort numbers Other ﬁlter attributes Port number comparisonsUDP Putting the parts togetherFiltering example #2 Filtering example #1Disadvantages of ﬁlters Design guidelinesWorking with IP ﬁlters and ﬁlter sets An approach to using ﬁltersNaming a new ﬁlter set Adding a ﬁlter setAdding ﬁlters to a ﬁlter set Input and output ﬁlters-source and destinationADD this Filter NOW Cancel Viewing ﬁlters Viewing ﬁlter setsModifying ﬁlters Deleting ﬁltersModifying ﬁlter sets Deleting a ﬁlter setSample IP ﬁlter set TCP Icmp UDP Possible modiﬁcations User’s Reference Guide IPX ﬁlters IPX packet ﬁlters Viewing and modifying packet ﬁltersAdding a packet ﬁlter Deleting a packet ﬁlter IPX packet ﬁlter setsViewing and modifying packet ﬁlter sets Adding a packet ﬁlter setNo Match IPX SAP ﬁlters Deleting a packet ﬁlter setViewing and modifying SAP ﬁlters Deleting a SAP ﬁlter Adding a SAP ﬁlterIPX SAP ﬁlter sets Viewing and modifying SAP ﬁlter setsAdding a SAP ﬁlter set Deleting a SAP ﬁlter set Firewall tutorial General ﬁrewall terms Basic IP packet componentsBasic protocol types Firewall design rules Example TCP/UDP PortsFirewall Logic Logical and function Binary representationImplied rules Established connectionsExample IP ﬁlter set screen Example network Filter basicsExample Example ﬁltersExample Example Chapter Utilities and Diagnostics Ping Receive return Ping packet Stop Ping Trace RouteTelnet client Disconnect Telnet console session Factory defaultsUpdating ﬁrmware Transferring conﬁguration and ﬁrmware ﬁles with TftpDownloading conﬁguration ﬁles Transferring conﬁguration and ﬁrmware ﬁles with Xmodem Uploading conﬁguration ﬁlesIdle Do you want to send a saved configuration to your Netopia? Restarting the system Part III Appendixes User’s Reference Guide Conﬁguration problems Appendix a TroubleshootingNetwork problems Console connection problemsPower outages How to reset the router to factory defaultsTechnical support How to reach usBefore contacting Netopia Environment proﬁleFAX-Back Online product informationUser’s Reference Guide What is IP? Appendix B Understanding IP AddressingAbout IP addressing Subnets and subnet masks Subnet masks Example Using subnets on a Class C IP internetISP Network Network conﬁgurationExample Working with a Class C subnet Distributing IP addressesBackground Technical note on subnet masking Netopia R7200 Dhcp server characteristics ConﬁgurationDhcp address serving Manually distributing IP addresses Using address servingMacIP serving Serve dynamic WAN clientsUnderstanding IP Addressing B-9 Tips and rules for distributing IP addressesDhcp example Internet Nested IP subnets0.0 C.1 WAN 3719 Packet header types BroadcastsUser’s Reference Guide Appendix C Understanding Netopia NAT Behavior Network conﬁgurationBackground User’s Reference Guide Understanding Netopia NAT Behavior C-3 Netopia Router WWW Server ISP Router LAN Understanding Netopia NAT Behavior C-5 Exported servicesImportant notes Understanding Netopia NAT Behavior C-7 Summary Appendix D Binary Conversion Table Decimal Binary Appendix E Further Reading User’s Reference Guide Further Reading E-3 User’s Reference Guide Pinouts for Auxiliary port modem cable Appendix F Technical Specifications and Safety InformationPower requirements DescriptionEnvironment Software and protocols Regulatory notices Agency approvalsNorth America InternationalDeclaration for Canadian users Important safety instructionsBattery Telecommunication installation cautionsAppendix G About Sdsl User’s Reference Guide Glossary User’s Reference Guide Glossary User’s Reference Guide Remapping See network number remapping User’s Reference Guide Glossary User’s Reference Guide Numerics IndexIndex-2 Index-3 Index-4 Index-5 Index-6 Limited Warranty and Limitation of Remedies User’s Reference Guide