Asante Technologies 1012 manual About Bridging

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About Bridging

About Bridging

The AsantéBridge 1012 has combined the world of a transparent learning bridge with the intelligence of the AsantéHub 1012.This section gives you a brief introduction to bridging and how it is implemented by your new AsantéBridge.

The purpose of any bridge is to provide a link between two dis- crete segments of a single network, enabling each segment to function as an independent network, except when packets must be sent from one segment to the other.

For example, let’s assume that we are starting with a simple Ether- net network comprising several AsantéHubs and various network devices (PC, Macintoshes, and printers):

10Base2	10Base2	10Base2
connection to hub	connection to hub	connection to hub
3in1 Port	3in1 Port	3in1 Port
AsantéHub 1012
AsantéHub 1012
ASANTE
10BaseT to
network devices
AsantéHub 1012
	AsantéHub 1012
ASANTE
10BaseT to
network devices
AsantéHub 1012
		AsantéHub 1012
ASANTE

10BaseT to network devices

Figure 2-1 A simple Ethernet network

In this net, we are using just three hubs conﬁgured on a thick Ethernet backbone. Expanding the net is relatively easy: we just add more hubs on the backbone.

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Contents AsantéBridge Users’ Guide Trademarks Tell Us What You Think Page Table of Contents Setting Up Out-of-Band Links Configuring a Redundant LinkConnecting a VT100 Terminal Default Settings AsantéBridge 1012 Local ManagementList of Figures Figure C-4 Crossover RJ-45 Cable page C-4 Introduction Manual About ThisIntroduction Intended Audience Intended Audience Conventions Used In This ManualTechnical Support Tell Us What You ThinkQuick Start Start Before YouQuick Start Introducing the AsantéBridge Introducing AsantéBridgeBridging Between Two Segments Snmp AsantéBridge FeaturesAsantéBridge Quick ViewFront Panel Quick View Bridge External Port Status LED RJ45 Port ConnectorsBridge Spanning Tree Status LEDs Bridge Hub Port Status LEDsAsantéBridge 1012 Rear Panel RJ21 Port Connector3in1 Port Bridge External Port AUI Through/End DIP SwitchBridge External Port Link/Receive LED Bridge External Port Collision LEDAC Power Connector PC/Terminal DIP SwitchOn/Off Switch FanFlashing Interpreting LEDsPreparing for the Installation Installing AsantéBridge 1012Installing the AsantéBridge Tools Basic Installation ProceduresUnpacking the AsantéBridge Asante´Hub Positioning the AsantéBridgeRack-mounting the AsantéBridge Page Dividing the Network into Segments Connecting Two Segments to the AsantéBridgeAbout Spanning Trees Shown belowUsing the front panel RJ45 ports Connecting Devices to the AsantéBridgeWhat You Need Conﬁguration Options Using the rear panel RJ21 connectorQuick Start Connecting to the Network Before You Start Connecting to the NetworkAbout Bridging About BridgingBridging between segments Simple Transparent BridgeAbout Bridging Like this Spanning TreeRedundant bridging Connecting to the BNC Port Using the 3in1 PortInterconnecting Hubs on Thin Ethernet Backbone Using the 3in1 PortInterconnecting Using Foirl Fiber Optic Inter-Repeater Link Connecting to the AUI PortInterconnecting to Thick Ethernet Backbone Connecting to the RJ45 in and Out Ports Connecting an In-Band Daisychaining Checking the Link Conﬁguring a Redundant Link10BaseT An Example Conﬁguration Conﬁguring a Redundant LinkIf a Link Goes Down to the Main Hub If the Main Hub Goes DownSetting Up Out-of-Band Links Setting Up Out-of-Band LinksInterconnecting Hubs 10 Connecting the Asanté Management Station for Out-of-Band Distance Restrictions Recommended MethodPC/Terminal Switch Conﬁguring Hub DIP SwitchesThrough/End Switch Connecting a VT100 Terminal Connecting a VT100 TerminalLists the factory default settings Default SettingsAsantéBridge 1012 Local Management AsantéBridge 1012 Local Management These functions, use the following ﬂow chartBridge Diagnostics Bridge DiagnosticsLocal Management Main Menu Local ManagementLocal Management Menu System Local Management Help Window General Help MenuConﬁguration Menu System Accessing the Conﬁguration Menu systemConﬁguration Menu System Reset System item is a command. Selecting this item Information Menu SystemPassword Menu Password MenuParameters Menu System Snmp AgentBridge Snmp agent menu has the following four submenus TCP/IP Parameters Menu TCP/IP Parameters MenuSoftware Update Menu Software Update MenuAbout the Software Update function Conﬁguration Menu System Menu without taking any action 10 System Update Status WindowConﬁguration Menu System 11 Snmp Trap Receiver Table Snmp Trap Receiver Table12 Snmp Community Name Table Snmp Community Name TableThis table allows you to control access to Snmp MIB objects 13 Out-of-Band Parameters Menu Out-of-Band Parameters MenuEnter control-z to return to the Conﬁguration Menu 14 Bridge Parameters Menu Bridge Parameters Menu System15 Spanning Tree Bridge Parameters Menu Spanning Tree Bridge Parameters MenuActivity.To update the window, enter control-r 16 Spanning Tree Port Setting Menu Spanning Tree Port Setting MenuAbout Forwarding Bridge Forwarding TableExit returns you to the Bridge Parameters Menu About dynamic and static table entries Alphabetic portion of the ﬁeld deﬁnes the type of entryAsantéBridge 1012 Local Management 18 Editing the Forwarding Table Using the Edit Function19 Searching for an Address Using the Search FunctionAbout the Filtering Table Bridge Filtering Table20 Bridge Filtering Table Conﬁguration Menu System 21 Resetting the Bridge Resetting the BridgeMenu 22 Bridge Statistics Statistics Menu SystemSupport for Pre 10BaseT Devices Appendix a Support for Pre 10BaseT Devices Technical Speciﬁcations Appendix B Technical Speciﬁcations B-3 B-4 Pinouts and Cable Speciﬁcations RJ-45 to RJ-21 Pinouts Amphenol to Modular Jack Appendix C Pinouts and Cable SpeciﬁcationsC-3 RJ-45 to RJ-45 Crossover Cable RJ-45 Modular Jack to Wall Jack PinoutsTable C-1 AUI Pinouts AUI DB-15 PinoutsC-6 AsantéBridge 1012 Index LED Numerics Manual P/N