3Com 510, 520, 530 manual IP Routing

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A routing environment allows stations to communicate indirectly. Following the example in Figure A-3, let us assume that a station on LAN 1 wants to communicate with a network server on LAN 2. The station on LAN 1, constructs a Layer 2 datalink header (see Figure A-5), with the source station’s hardware address, and also the destination hardware address of the local router. To direct the packet to its final network destination, the source station must complete the Layer 3 network header with the destination network address of LAN 2.

Once the packet is received by the Router A, attached to LAN 1, it strips off the network header (refer to Figure A-5) and examines the Layer 3 datalink header information. It then reviews its routing tables in order to establish where to forward the data packet. It is possible that the LAN 1 router has multiple outgoing ports that would allow different transmission routes to the destination network. In our example using Figure A-3, a packet could go via Router D to get to Router B, or it could go more directly across a single direct link between Router A and Router B.

Routing IP and IPX

A-9

Figure A-5 Data Packet Containing Hardware And Software Addresses

IP Routing

The local router contains, within its routing table, information which will allow it to determine the best data transmission route. The type of information the router uses to make these assessments is protocol dependent, and some communications protocols may employ a range of routing algorithms, and accompanying routing protocols. In the case of the TCP/IP protocol suite, the OfficeConnect Remote utilizes the Routing Information Protocol (RIP). RIP is also known as a distance vector protocol.

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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 WAN Port Connecting Cable V.11/X.21 Specifications B-1Management Connector Interface B-1 Dimensions B-4Index Page Introduction How to Use This GuideThis table shows where to find specific information About this GuideConventions 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 To prolong the operational life of your equipment InstallationUsing the Rubber Feet and Stacking Clips Siting the OfficeConnect RemoteClipping 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 MaskingKruislaan USA InterNIC, Network SolutionsHuntmar park Drive HerndonNumbered 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