3Com 510, 520, 530 manual Numbered and Unnumbered Links

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Admin. Contact:	Nakayama, Masaya (MN89)
Telephone:	+81 3 3812 211 ext2720
e-mail:	nakayama@nic.ad.jp
Technical Contact:	Conrad, David (DC296)
Telephone:	81 3 3580 3781 or 3580
Fax:	81 3 3580 3782
e-mail:	davidc@apnic.net

Numbered and Unnumbered Links

When routing and using the OfficeConnect Remote’s FastConnect protocol over ISDN or serial WAN links as opposed to PPP, you have the option of using numbered or unnumbered links.

A numbered link requires a valid IP address to be configured for both ports connected to each end of the link. The IP address used must be for a different subnet or network than that used by either LAN at each end of the link. An example is shown in Figure A-6. In this example, the Local Site uses the network address 191.000.100.xxx on its LAN. The remote site uses the network address 191.000.200 on its LAN and the link uses 191.000.300.

Numbered and Unnumbered Links A-15

Figure A-6 Example of a Numbered Link

By default the WAN port and ISDN port have an IP address of 10.0.0.1. This is set to allow remote Telnet connections to the unit to enable configuration but must be changed when configuring the unit to allow correct operation. If you use the Quick Configuration (QC) option to configure the unit to operate over ISDN, the Port IP Address is set to unnumbered.

In most instances you should use unnumbered links. This is easier to configure and does not use network addresses which may be in short supply.

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Contents User Guide Officeconnecttm Remote3Com Corporation 5400 Bayfront Plaza Santa Clara, California Disconnect the power adapter before moving the unit Important Safety InformationWAN = Selv Wichtige Sicherheitshinweise’INFORMATION DE Sécurité Importante Page Contents Management Connector Interface B-1 Specifications B-1Dimensions B-4 WAN Port Connecting Cable V.11/X.21Index Page This table shows where to find specific information How to Use This GuideAbout this Guide IntroductionConventions Icon conventions that are used throughout this guide areText conventions used in this guide are Additional Safety Information Additional Safety InformationAbout this Guide Getting Started OfficeConnect Remote FeaturesGetting Started Benefits of Isdn Easy to install, configure and supportPack Contents Checklist Registering Ownership Of Your OfficeConnect Remote Pre-installation RequirementsFront Panel OfficeConnect Remote Front and Rear Panel FeaturesQuick flash Self test or software loading during power up Getting Started Rear Panel WAN OfficeConnect Remote 520 and 530 only Introduction Using the Rubber Feet and Stacking Clips InstallationSiting the OfficeConnect Remote To prolong the operational life of your equipmentClipping Your Units Together Wall Mounting the OfficeConnect RemoteConnecting to Your 10BaseT LAN Connecting the Power AdapterTo connect the OfficeConnect Remote to in-house LAN Connecting to a Single WorkstationCounter-clockwise to unlock it and remove it Connecting to Your 10Base2 LANConnecting to Isdn Connecting to the WANConnecting to the Voice Port Location of OfficeConnect Fax and Print Servers Connecting a Management TerminalStarting Quick Configuration Quick ConfigurationMain Menu Screen At the command prompt enter QCAbout Quick Configuration Setting the Unit Name Connecting to a Novell IPX Network Complete the fields on this screen as followsPress CTRL+E to submit this information 12 Connecting To An IP Host On The Same Network Connecting to an IP Host on the Same IP Network13 Connecting to an IP Host on a Different Network Connecting to an IP Host on a Different IP NetworkPress CTRL+E to submit this information 14 Connecting To The Internet Or PPP Router Connecting to the Internet or a PPP RouterGetting Started Press CTRL+E to save this information Password is case-sensitiveMonitoring Isdn Line Usage Setting Up a WAN LinkSetting Up a WAN Link Novell Network Examples of Typical Isdn Networking ApplicationsExamples of Typical Isdn Networking Applications Disconnected. In this way Isdn calls are kept to a minimum192.000.000.xxx IP Host on the Same IP NetworkIP Host on Another IP Network 18 IP routed network Internet or PPP Router19 PPP Connections to the Internet and Corporate Network 20 Multiple Connections from a Single Site Multiple Connections from a Single SiteTroubleshooting TroubleshootingSoftware Reference guide for more Bridging and Routing Concepts Bridging and RoutingHow Bridges Learn Guidelines For Choosing Bridging or RoutingBridging and Routing Concepts Bridging Between Remote SitesBuilding a Larger Network Figure A-2 Multiple Remote Bridges Multiple Paths Between Bridged LANsNetwork Topology Broadcast StormsOptimum Use of Resource Routing IP and IPX Network Organization, Structure and Physical LayoutInternet Figure A-4 Open Systems Interconnection Network Layer Model IP Routing Bridging and Routing Routing IP and IPX A-11 IPX RoutingClass C IP AddressesMask, for example Subnet MaskingHuntmar park Drive USA InterNIC, Network SolutionsHerndon KruislaanNumbered and Unnumbered Links Bridging and Routing Technical Information SpecificationsBridge Characteristics ApprovalsPerformance FCC Requirement Dimensions WAN Port Connecting Cable V.11/X.21 Support Interface Cable CharacteristicsWAN Port Connecting Cable V.24/V.28 Support WAN Port Connecting Cable V.35/V.36 Support Manager Port Connecting Cable Modem Cable LAN Port Connecting Cable 10BaseTOrdering Information Glossary 100BaseVG An Ieee standard for using the new IeeeChapter C Glossary Page Chapter C Glossary Page Chapter C Glossary Page Topology The way that a network is physically laid out On-line Technical Services 3Com Bulletin Board ServiceTechnical Support Support from Your Network Supplier Support from 3ComWorld Wide Web Site To obtain an RMA number, call or fax Returning Products for RepairTechnical Support Numerics IndexLAN Limited Warranty OfficeConnect Remote EMC Update