Manuals / RadioLAN / Computer Equipment / Network Card

RadioLAN Campus BridgeLINK manual Max. Age Time

Models: Campus BridgeLINK

1 146

Download 146 pages 42.22 Kb

Page 75

Enter the number of seconds (between 4 and 30) that the bridge will wait for the primary port to pass a frame before switching the secondary port into the forwarding state, so that the secondary port can route data when the primary port fails to do so.

Max. Age Time (6–40)

The bridge maintains a routing database, containing unique source addresses of frames that the bridge receives from each network to which it is connected. The database relates a station’s source address to a port on the bridge, and the bridge uses the database to choose which port it will use to transmit frames with a destination address matching the entry in the database.

The bridge compares each new frame’s source address to entries within its internal routing database. If the bridge does not find a new frame’s source address in the routing database, it adds the new frame’s source address to the database.

The Max. Age Time field sets the amount of time in seconds that the bridge stores any source address. When the bridge stores a frame’s source address, the address remains in the routing database for the length of time specified in Max. Age Time. If the bridge receives a new frame, and finds the frame’s source address in the database, the bridge automatically resets the Max. Age Time, restarting the count. If the aging timer for an entry in the database expires before the bridge receives another frame with the same source address, the bridge removes the source address from its internal routing database. This prevents the database from storing information about inactive network stations.

890-007 Rev. A 01/28/99

Page 65

© 1999 RadioLAN, Inc.

Image 75

RadioLAN Campus BridgeLINK manual Max. Age Time

Contents

Wireless Local Area Network Campus BridgeLINK User Guide FCC Remarks Disclaimer Manual Conventions Trademark DisclosuresInstalling the CPU Using the Campus BridgeLINK Manager Recording Important System Information Getting Technical Support 120 890-007 Rev. a 01/28/99 Introduction 890-007 Rev. a 01/28/99 LED Indicators Campus BridgeLINK SystemCampus BridgeLINK Processor Unit CPU MDI/MDI-X Switch 10BaseT LED Indicators 10BaseT Port JackLocal Port Jack Mounting Bracket CRM PortCRM Companion Radio Module Companion Radio Module CRMDirectional Antenna Power TransformerLow-Loss RF Cable Antenna CableTypical Campus BridgeLINK Application Typical Campus BridgeLINK ApplicationLinking Networks in Two Locations Determining the Distance between BuildingsQuick Configuration Initial IP Address SetupTemporarily Connect the CPU Configuration Disk Using the IP Assign Utility to Assign the CPU’s IP AddressTools You Will Need Installing the CPULocating the CPU Locating the CPU Closely to Network, Power, and the AntennaMounting the CPU Connecting the Antenna Cable to CRMInserting the CRM into the Bracket Marking Screw Locations Connecting the NetworkAcceptable Ground Source Grounding ConsiderationsAttaching the Directional to a Typical Mount Brief Word About SafetyMinimum Height from Ground Choosing the Best Mounting HeightAdjusting the Antenna’s Direction Sighting Each Campus BridgeLINK AntennaTools You Will Need Eyeball the Direction Sighting ProcedurePower Connection Sequence Apply Power to the CPUAdding Security to the Wireless Network Local ManagementDual Remote Management Html and Snmp Browser Requirements System RequirementsCPU Web Site Using the Campus BridgeLINK ManagerLogging onto Campus BridgeLINK Manager Browsing the Network for the CPUEnter Password Product IDEnter User Name Campus BridgeLINK Manager Main Menu Campus BridgeLINK Manager Site LayoutCampus BridgeLINK Manager Main Save Distance Parameter button Aiming the Directional Antennas∙ Explicit Address check box Start buttonStarting and Stopping the Test Setting the Frame SizeSetting the Estimated Distance between Antennas Selecting the Distant CPU’s AddressUser Logon Name Fields Setting Up Security FeaturesSetting Up Snmp Capabilities Administration Parameters Use DefaultReload System Name System ContactSystem Location IP Parameters IP ParametersDefault Gateway IP Address IP AddressSubnet Mask Disabled Dhcp SupportAcquire System IP Only Acquire IP and Download System Software Acquire IP, Download System Software and Save itDhcp Server IP Address Cold Start User AuthenticationAuthentication Trap check Snmp ParametersEnable Authentication Trap Read CommunityWrite Community Configure Snmp Host Configuring Snmp Managers for the CPUSetting Access Rights for Snmp Managers Directing Traps to Manager StationsDirecting the System Log to Manager Stations Point-to-Point Mode Setting the CPU’s Mode of Operation∙ Encryption Key field Data Encryption Enabled Check Box Securing the CPU with Data EncryptionEncryption Key and Retype Encryption Key Fields Bridging the Link and 10BaseT Networks Getting to the Port Parameters Menu MAC Address Filter 10BaseT Port ParametersBlock IP Packets Edit ButtonBlock NetBIOS Packets Block IPX PacketsBlock NetBEUI Packets Radio Port Parameters Subnet ID Port NameConsole Parameters Setting the Baud Rate for the Local PortManaging Packet Flow Through the CPU MAC Address Source/Dest Mask BytesAdding MAC Filters Accept/RejectDeleting MAC Filters Modifying MAC FiltersBridging Networks Spanning Tree ParametersBridge Priority 0-65,535 Hello Time Forward Delay TimeMax. Age Time Port Path Cost 1-65,535 Port PriorityInterrogating the System for Performance Information 10BaseT Port Statistics Checking 10BaseT Port StatisticsTotal Packets Transmitted Total Error PacketsCRC Error Packets Collision Error PacketsRunt Packets Overrun PacketsRadio Port Statistics Checking Radio Port Wireless Link StatisticsAverage Transmit Rate Packets/Sec Packet TransmissionTotal Retransmission Packet ReceptionAverage Receive Rate Packets/Sec Upgrading System Software Software Upgrade from fileSystem Software Filename Download Button Tftp Server IP AddressConfiguration Changes Saving or Rejecting Configuration Setting ChangesSave All Changes and Reset Reload Last Saved ConfigurationReset Configuration to Factory Default Reset Resetting the CPURecording Important System Information System Name Default Gateway IP AddressBoot Software Version Product Name890-007 Rev. a 01/28/99 Time Sec Error MessageViewing the System Log TaskManaging the CPU Locally Serial Port Adapter Cable Pin-outs Signal Description DB-9F RJ11Hot Keys CPU Local ManagementLogon Menu Logging onto the CPU Configuration ScreenSerial Number Using the Main Menu System FeaturesNode Discovery System Status System ConfigurationDiagnostics System StatisticsAdministration Parameters Working with the System Configuration MenuIP Parameters Spanning Tree ParametersPort Parameters Snmp Parameters Software Upgrade Parameters Selecting this itemData Encryption Access SecurityConfiguration Changes System Operation ModeUser Logon Name Configuration Manager Menu ItemsUser Password Menu Name Menu Item Refer toSubnet Mask Menu Name Menu Item Refer to System ContactSystem Location IP AddressDhcp Server IP Address Dhcp Server IP Address on Menu Name Menu Item Refer to Default Gateway IPDhcp Operation Mode AddressRight Managing Host AccessEnable Trap Receiving Managing Host IP AddressPoint-to-Point Mode ReceivingAdd this Managing Host Menu Data Encryption Enabled Check10BaseT Port Parameters Menu Radio Port ParametersBlock IP Packets Block NetBIOS PacketsBlock MAC Packets Edit MAC FiltersAddress Filtering Packet When SatisfiedList all Filters Configured Source or DestinationPort Path Cost 1-65,535 Forward Delay TimeMax. Age Time Port PriorityTftp Server IP Address Tftp Server IP Address on Download ModeChanges Save All ConfigurationMenu Name Menu Item Refer to System Software Filename Perform DownloadPing Frame Size ConfigurationsReset All Configuration Ping DestinationSystem Information Menu Name Menu Item Refer to BestWorst Perform PingProblem No traffic for anyone IndicatorsProblem Retransmissions are excessive Problem Radio Range seems less than it should beGlossary Access Point Agent Client Station Dhcp ServerDomain Gateway IP Address MAC Address Manager Node PacketsRouting Subnet Mask 10BaseT Port LEDs IndicatorsPower LED Fault LEDStatus LEDs MDI/MDI-X Switch10BaseT connector ConnectorsSerial Port Connector Electrical Specifications Network ProtocolStandards Support Weight Physical SpecificationsEnvironmental Specifications DimensionsElectromagnetic Emissions Safety Agency ApprovalsGetting Technical Support Index 890-007 Rev. a 01/28/99 890-007 Rev. a 01/28/99 890-007 Rev. a 01/28/99 890-007 Rev. a 01/28/99 890-007 Rev. a 01/28/99 890-007 Rev. a 01/28/99 890-007 Rev. a 01/28/99 890-007 Rev. a 01/28/99 890-007 Rev. a 01/28/99 890-007 Rev. a 01/28/99 890-007 Rev. a 01/28/99 890-007 Rev. a 01/28/99 890-007 Rev. a 01/28/99 890-007 Rev. a 01/28/99 RadioLAN