Asante Technologies 1012 manual Spanning Tree, Like this

Page 40

Chapter 2 — Connecting to the Network

A Spanning Tree

Dividing your network into two segments reduces your overall

 

backbone traffic and improve network efficiency, but also intro-

 

duces a certain element of risk: the bridge becomes the sole path

 

between the two segments. If the bridge fails for any reason,

 

devices on different segments will no longer be able to communi-

 

cate with each other.

 

This may not seem serious, but consider the implication if your

 

database server is on one segment and must be accessed by

 

devices on the other segment. Suddenly the stakes are a little

 

higher. Fortunately, by simply installing an additional bridge

 

between the two segments, you can provide a high degree of

 

redundant protection. Such a network configuration would look

 

like this:

 

 

AsantéHub 1012

AsantéHub 1012

 

AsantéHub 1012

AsantéHub 1012

 

AsantéHub 1012

 

ASANTE

 

ASANTE

ASANTE

AsantéHub 1012

AsantéHub 1012

 

 

 

 

ASANTE

AsantéHub 1012

10BaseT to

 

10BaseT to

 

 

network devices

 

 

 

 

 

network devices

 

 

 

Segment A 10Base5 backbone

 

 

AUI link to the Segment A

 

 

 

10Base5 backbone

 

 

AsantéBridge 1012

AsantéBridge

 

 

Number 1

1012 Number 2

Standby

Active

 

 

AsantéHub 1012

AsantéHub 1012

Bridge

Bridge

BRIDGE

BRIDGE

ASANTE

ASANTE

 

 

 

 

3in1 Port link to the Segment B 10Base5 backbone

Segment B 10Base5 backbone

10BaseT to network devices (also on Segment B)

ASANTE

AsantéHub 1012

AsantéHub 1012

AsantéHub 1012

AsantéHub 1012

 

ASANTE

AsantéHub 1012

AsantéHub 1012

AsantéHub 1012

AsantéHub 1012

ASANTE

ASANTE

10BaseT to

10BaseT to

network devices

network devices

Page 2-6

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Contents AsantéBridge Users’ Guide Trademarks Tell Us What You Think Page Table of Contents Configuring a Redundant Link Setting Up Out-of-Band LinksConnecting 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 Conventions Used In This Manual Intended AudienceTell Us What You Think Technical SupportQuick Start Start Before YouQuick Start Introducing AsantéBridge Introducing the AsantéBridgeBridging Between Two Segments AsantéBridge Features SnmpAsantéBridge Quick ViewFront Panel Quick View RJ45 Port Connectors Bridge External Port Status LEDBridge Spanning Tree Status LEDs Bridge Hub Port Status LEDsAsantéBridge 1012 Rear Panel RJ21 Port Connector3in1 Port Through/End DIP Switch Bridge External Port AUIBridge External Port Link/Receive LED Bridge External Port Collision LEDPC/Terminal DIP Switch AC Power ConnectorOn/Off Switch FanInterpreting LEDs FlashingPreparing for the Installation Installing AsantéBridge 1012Installing the AsantéBridge Tools Basic Installation ProceduresUnpacking the AsantéBridge Positioning the AsantéBridge Asante´HubRack-mounting the AsantéBridge Page Connecting Two Segments to the AsantéBridge Dividing the Network into SegmentsShown below About Spanning TreesUsing the front panel RJ45 ports Connecting Devices to the AsantéBridgeWhat You Need Using the rear panel RJ21 connector Configuration OptionsQuick Start Connecting to the Network Connecting to the Network Before You StartAbout Bridging About BridgingSimple Transparent Bridge Bridging between segmentsAbout Bridging Spanning Tree Like thisRedundant bridging Using the 3in1 Port Connecting to the BNC PortUsing the 3in1 Port Interconnecting Hubs on Thin Ethernet BackboneConnecting to the AUI Port Interconnecting Using Foirl Fiber Optic Inter-Repeater LinkInterconnecting to Thick Ethernet Backbone Connecting to the RJ45 in and Out Ports Connecting an In-Band Daisychaining Checking the Link Configuring a Redundant Link10BaseT Configuring a Redundant Link An Example ConfigurationIf the Main Hub Goes Down If a Link Goes Down to the Main HubSetting Up Out-of-Band Links Setting Up Out-of-Band LinksInterconnecting Hubs 10 Connecting the Asanté Management Station for Out-of-Band Recommended Method Distance RestrictionsPC/Terminal Switch Configuring Hub DIP SwitchesThrough/End Switch Connecting a VT100 Terminal Connecting a VT100 TerminalDefault Settings Lists the factory default settingsAsantéBridge 1012 Local Management These functions, use the following flow chart AsantéBridge 1012 Local ManagementBridge Diagnostics Bridge DiagnosticsLocal Management Local Management Main MenuLocal Management Menu System General Help Menu Local Management Help WindowConfiguration Menu System Accessing the Configuration Menu systemConfiguration Menu System Reset System item is a command. Selecting this item System Information MenuPassword 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 10 System Update Status Window Menu without taking any actionConfiguration Menu System Snmp Trap Receiver Table 11 Snmp Trap Receiver TableSnmp Community Name Table 12 Snmp Community Name TableThis table allows you to control access to Snmp MIB objects Out-of-Band Parameters Menu 13 Out-of-Band Parameters MenuEnter control-z to return to the Configuration Menu Bridge Parameters Menu System 14 Bridge Parameters MenuSpanning Tree Bridge Parameters Menu 15 Spanning Tree Bridge Parameters MenuActivity.To update the window, enter control-r Spanning Tree Port Setting Menu 16 Spanning Tree Port Setting MenuBridge Forwarding Table About ForwardingExit returns you to the Bridge Parameters Menu Alphabetic portion of the field defines the type of entry About dynamic and static table entriesAsantéBridge 1012 Local Management Using the Edit Function 18 Editing the Forwarding TableUsing the Search Function 19 Searching for an AddressBridge Filtering Table About the Filtering Table20 Bridge Filtering Table Configuration Menu System Resetting the Bridge 21 Resetting the BridgeMenu Statistics Menu System 22 Bridge StatisticsSupport 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 Appendix C Pinouts and Cable Specifications RJ-45 to RJ-21 Pinouts Amphenol to Modular JackC-3 RJ-45 Modular Jack to Wall Jack Pinouts RJ-45 to RJ-45 Crossover CableAUI DB-15 Pinouts Table C-1 AUI PinoutsC-6 AsantéBridge 1012 Index LED Numerics Manual P/N