3Com 530, 510, 520 manual Figure A-4 Open Systems Interconnection Network Layer Model

Page 62

A-8 BRIDGING AND ROUTING

It is important to understand that in a bridged network the addressing structure for both IP and IPX relates to a single network. If the units in Figure A-3were bridges and not routers, then an IP node on LAN A could, for example, have an address 140.56.10.0, the node on LAN B an address 140.56.10.2, and the node on LAN C, an address of

140.56.10.3.All the nodes, therefore, are able to share the same Class B network address, regardless of their location on the bridged network.

However, if there were NetWare nodes throughout the three bridged sites, they would also share the same IPX network number. If each of the bridged LANs supported a network server, each with its own unique network number, and an IPX address is misconfigured, the NetWare network server consoles will report the message ‘Router Configuration Error – Router XXXXX claims that LAN is XX-XX-XX-XX’. (The router it refers to is in fact the network server).

APPLICATION

PRESENTATION

SESSION

TRANSPORT

NETWORK

DATALINK

PHYSICAL

Network

 

File

 

 

 

Transfer

 

 

File Store

 

 

Telnet

 

Protocol

 

(NFS)

 

 

 

 

(FTP)

 

 

 

 

 

 

 

 

 

 

 

User

 

Transmission

Database

 

Control

Protocol

 

Protocol

(UDP)

 

(TCP)

 

 

 

Internet Protocol (IP) and

Internet Control Message Protocol

(ICMP)

Link Level Control

Ethernet

 

Others

Hardware

 

 

 

 

 

 

ARP

RARP

Figure A-4 Open Systems Interconnection Network Layer Model

Image 62
Contents Officeconnecttm Remote User Guide3Com Corporation 5400 Bayfront Plaza Santa Clara, California Important Safety Information Disconnect the power adapter before moving the unitWichtige Sicherheitshinweise WAN = Selv’INFORMATION DE Sécurité Importante Page Contents Dimensions B-4 Specifications B-1Management Connector Interface B-1 WAN Port Connecting Cable V.11/X.21Index Page About this Guide How to Use This GuideThis table shows where to find specific information IntroductionText conventions used in this guide are ConventionsIcon conventions that are used throughout this guide are Additional Safety Information Additional Safety InformationAbout this Guide OfficeConnect Remote Features Getting StartedGetting Started Easy to install, configure and support Benefits of IsdnPack Contents Checklist Pre-installation Requirements Registering Ownership Of Your OfficeConnect RemoteOfficeConnect Remote Front and Rear Panel Features Front PanelQuick flash Self test or software loading during power up Getting Started Rear Panel WAN OfficeConnect Remote 520 and 530 only Introduction Siting the OfficeConnect Remote InstallationUsing the Rubber Feet and Stacking Clips To prolong the operational life of your equipmentWall Mounting the OfficeConnect Remote Clipping Your Units TogetherConnecting the Power Adapter Connecting to Your 10BaseT LANConnecting to a Single Workstation To connect the OfficeConnect Remote to in-house LANConnecting to Your 10Base2 LAN Counter-clockwise to unlock it and remove itConnecting to the Voice Port Connecting to IsdnConnecting to the WAN Connecting a Management Terminal Location of OfficeConnect Fax and Print ServersQuick Configuration Starting Quick ConfigurationAt the command prompt enter QC Main Menu ScreenAbout Quick Configuration Setting the Unit Name Press CTRL+E to submit this information Connecting to a Novell IPX NetworkComplete the fields on this screen as follows Connecting to an IP Host on the Same IP Network 12 Connecting To An IP Host On The Same NetworkConnecting to an IP Host on a Different IP Network 13 Connecting to an IP Host on a Different NetworkPress CTRL+E to submit this information Connecting to the Internet or a PPP Router 14 Connecting To The Internet Or PPP RouterGetting Started Password is case-sensitive Press CTRL+E to save this informationSetting Up a WAN Link Monitoring Isdn Line UsageSetting Up a WAN Link Examples of Typical Isdn Networking Applications Novell NetworkDisconnected. In this way Isdn calls are kept to a minimum Examples of Typical Isdn Networking ApplicationsIP Host on the Same IP Network 192.000.000.xxxIP Host on Another IP Network Internet or PPP Router 18 IP routed network19 PPP Connections to the Internet and Corporate Network Multiple Connections from a Single Site 20 Multiple Connections from a Single SiteTroubleshooting TroubleshootingSoftware Reference guide for more Bridging and Routing Bridging and Routing ConceptsGuidelines For Choosing Bridging or Routing How Bridges LearnBridging Between Remote Sites Bridging and Routing ConceptsBuilding a Larger Network Multiple Paths Between Bridged LANs Figure A-2 Multiple Remote BridgesOptimum Use of Resource Network TopologyBroadcast Storms Internet Routing IP and IPXNetwork Organization, Structure and Physical Layout Figure A-4 Open Systems Interconnection Network Layer Model IP Routing Bridging and Routing IPX Routing Routing IP and IPX A-11IP Addresses Class CSubnet Masking Mask, for exampleHerndon USA InterNIC, Network SolutionsHuntmar park Drive KruislaanNumbered and Unnumbered Links Bridging and Routing Specifications Technical InformationPerformance Bridge CharacteristicsApprovals FCC Requirement Dimensions Interface Cable Characteristics WAN Port Connecting Cable V.11/X.21 SupportWAN Port Connecting Cable V.24/V.28 Support WAN Port Connecting Cable V.35/V.36 Support Manager Port Connecting Cable LAN Port Connecting Cable 10BaseT Modem CableOrdering Information 100BaseVG An Ieee standard for using the new Ieee GlossaryChapter C Glossary Page Chapter C Glossary Page Chapter C Glossary Page Topology The way that a network is physically laid out Technical Support On-line Technical Services3Com Bulletin Board Service World Wide Web Site Support from Your Network SupplierSupport from 3Com Returning Products for Repair To obtain an RMA number, call or faxTechnical Support Index NumericsLAN Limited Warranty EMC Update OfficeConnect Remote