Flooding Configurations | Intermec 6710 manual

SECTION 2 " Features and Functional Overview

Flooding Configurations

Standard LAN bridges flood frames on all ports when the destination address is unknown. Additionally, many network protocols use multicast addressing for connection and status communications. A multicast frame is a special type of frame destined for more than one physical address. Standard bridges always flood multicast frames.

Most wireless media supported in the access point operate at lower media speeds than Ethernet. Indiscriminate flooding from a busy Ethernet backbone to a wireless medium can consume a substantial portion of the available wireless bandwidth. This reduces system performance even though flooded frames are frequently not intended for stations on a given wireless segment.

To allow performance tuning, the access point provides separate flooding control options for both unicast (single physical address) and multicast frames. Access points serving as designated bridges connecting wired LAN segments may be configured to use different flooding settings than access points serving only wireless stations.

Two of the wireless media supported in the access point — synthesized UHF (S-UHF) and 900 MHz — provide reliable attach mechanisms, which guarantee that wireless stations are always in the access point’s forwarding database. Unicast flooding is never required for these stations.

The Wireless LAN Interoperability Forum (WLIF) 2.4 GHz option also provides a reliable attach mechanism for stations using the NORANDR Network Layer (NNL) terminal emulation network protocol. Multicast flooding levels are set for individual networks based on the needs of wireless stations to receive multicast frames. For networks with IP wireless stations only, the Proxy ARP Server provides an option to enabling multicast flooding.

2-66710 Access Point User’s Guide

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Intermec 6710 manual Flooding Configurations

Contents

USER’S Guide Acknowledgments FCC Computer Compliance Canadian 2.4 GHz Radio License Suit our products. Other cables may not be tested. They may Page Contents TCP/IP End of Segment Middle of Segment MAC Address Status Hello Period Expressions ExprSeq Offset Mask Value Id Action Values Mode IP Addresses Type TX Filter Server Start Server Stop Server Log Appendix a Appendix B Appendix E Appendix F Figures Tables Xiv 6710 Access Point User’s Guide Purpose of This Guide Features It operates on the open wireless FunctionalSection Organization 10BASE5 Ethernet Software Download Wireless Station User’s Guides Intended AudienceRelated Publications Customer Support System Management Publications Features and Functional Overview Description Bridging Functionality General Concepts Features and Functional Overview Access Point Bridging Layer Network Organization Forwarding Pending Messages Flooding Configurations Bridge Ports Proxy ARP ServerEthernet Port Ethernet Port Filters Radio Ports OWL/IP Port Configuration and Management ConfigurationDiagnostics and Configuration Port Remote Access Electronic Software Distribution Sample Configuration Network Management Sample Network Configuration Components PC Card Slots Features and Functional Overview Industrial Locking Mounting Bracket AccessoriesPower Cord Country Part Number Features and Functional Overview Access Point User’s Guide Installation Checking the Default Configuration Preparing for the Installation Collecting the EquipmentEthernet LAN Components 10BASE2 Components 10BASE-T Component 10BASE5 Components Local Diag Port Access For local access, you need the followingCommunication Equipment Web Browser Network Management PlatformTelnet Pin Null modem cable 25-pin 321-355-001 General Installation Guidelines Finding the Best LocationSite Survey Mounting the Access Point Horizontal Tabletop Mount See -6 and the procedure following it Vertical and Ceiling Mounts Connecting to Ethernet See -7 and the procedure following it 10BASE2 EthernetEnd of Segment See -8 and the procedure following it Middle of Segment Vampire Tap 10BASE5 EthernetSeries Transceiver On the transceiver Series Transceiver 100/240 VAC Drop cable Pin AUI port Vampire tap 10BASE5 coax See -11 and the procedure following it 10BASE-T Ethernet Installing PC Cards Wlif 900 MHz UHF Applying Power AC Power Input Connection Installation Access Point User’s Guide Configuration Task Diag Port Telnet Browser Creating a Local Diag Port Session Local Session Accessing the Configuration Menus 9600, 8N1, full duplex Accessing the ROM Command Monitor Creating a Telnet Session Default and Site Settings Option Default Site Setting Security Bridge Ethernet port Wlif radio port UHF radio port Configuring the Access Point Main Menu Eeprom since the access point was last Use Tion. You must write the new configuration Using the View CommandFollowing chart describes how to use the options To Eeprom and reboot the access point for Press TCP/IP Options IP Address IP Subnet Mask Discussion of Dhcp starts on IP Router Subnet First Address Last Address Setting Description IP Frame TypeIP Frame Type sets the type of frame containing IP traffic Dhcp Server Name Prompt for the Dhcp server name is Handshaking Bootp OperationNetworks With Dhcp and Bootp Servers Infinite Leases Auto ARP Minutes Bridge Options Serial NumberLan ID Default is RootRoot Priority Global Radio Option Description Wlif radio Each Global Radio option has the following settings Following are ranges and defaults for the Value optionValue Range Default Global Flooding Multicast and Unicast options have the following settings Inbound options are Outbound to Stations Flooding Level Checklist Answer Settings Answer Settings Answer Setting Comments Answer Setting Yes Outbound to Secondaries/Unicast/Enabled ARP Server Mode UHF Flooding LevelFlood Register Figuration, since multicast ARPs are never Ports Select a port to display its options Name MAC Address Hello Period Settings for Hello Period areStatus Ethernet hello period can be set to 2 or 3 seconds Ethernet Options OWL Frame TypeUse Ethernet to set Ethernet port options Cable Type Static Addresses Normal RX Filter Frame Types Frame Types options are Frame types have the following settings Frame Type Description SubTypes User-Defined Subtypes in SubTypes 1 and SubTypes Subtypes for SubTypes 2 are Subtype Value Filtering Examples Access Points Servicing IP Wireless Stations Example Example 1, Frame Types is set as follows Example 2, Frame Types is set as follows Advanced RX Filter ExpressionsAdvanced RX Filter options are Filter expressions have the following settings EQ default Operator Description Value Id Filter expression values have the following settings Values Bridging Bridge PriorityBridging options are Designated Bridge Selection Disabled No flooding occurs. The super root, however Wlif Options Security IdUse Wlif to set Proxim 2.4 GHz radio options Default security ID is Norandowl Node Type Master Parms Channel and Subchannel Access Point Channel Subchannel Access Point Channel Subchannel Wireless Hops Settings for the Master are Slave Parms Default is MAC Config Slave station must have a root priority Manual MAC Parms Auto Hop Period Beacon FrequencyDeferral Slot and Fairness Slot Settings for both options are Fragment Size Transmit Mode Norm Ack Retry Frag Ack Retry Norm Qfsk RetryFrag Qfsk Retry Mode- Channel MHz OptionsFile Name Use Falcon to set 900 MHz radio options SettingDescription Use UHF to set S-UHF radio options UHF OptionsCall Sign Call Sign displays your network’s callsign. The prompt is Master Mode Frequency Attach Priority OWL/IP Options Overview OWL/IP Overview Configuration OWL/IP Menu OWL/IP configuration menu options areOWL/IP port may be configured with the following options Mode Configuration screen for IP Addresses is IP Addresses Entries are cleared by setting addresses to TX Filter Default filter settings for OWL/IP are shown below Default filter settings for SubTypes 1 are shown below Use Security to set these passwords PasswordService Password Security Options Advanced Password Combining Radio OptionsSame LAN ID Creating a Web Browser Session Different LAN IDsSet the Ethernet cable type Web Browser Session Setting Description Access Point Configuration Using the Configuration Guide Configuration GuidelinesPlanning Your Installation Simple Network Advanced Functions Configuration Planning Secondary LANs or wireless Access point If using Wlif Secondary LANs Set the Flood Stations Boot Segments 1 File System StructureData Segments 3 Active and Inactive Segments Segment Names RAM SegmentMnemonic Description File Menu Commands File NamesDownloading Programs Fb Command File Menu appearsUse Fb to make inactive segments active. The format is Fd Command This can also be accomplished by Fdel Command Command’s format is Fe Command Tftp CommandUse the Tftp command to display the following screen These commands are supported Tftp Server Server Stop Tftp Client CommandsServer Start Server Log Get Filetftp get ip address foreign file name local file name Script Command Put Creating Script Files Sample Script File FHDR29K -d -v1.00 SCRIPT.TXT SCRIPT.DAT Script File Command Summary Command Sequence Description Addition, all commands are case insensitive, so Tftp Client Command RetryReboot Command Is the same as SDVars Command Use the SDVars command to display the following argumentsFollowing variables are supported StartTime ServerIpAddressScriptFilename Format of the ScriptFilename variable is For example, consider the following script file commands StatusCheckPoint Terminate Filesdvars set terminate value NextPowerUpTime SetActivePointers ROM Command Monitor Starting the Command Monitor Viewing ROM Commands FX s Npwd is for internal use by service personnel only SR zBaud rates are To open the password menu, type the following FE sallFollowing displays FFR f FS s nFB s FPC f s FPE MI String RMI Exiting the ROM Command Monitor Software Download ExampleUpgrading Through Diag Port Command Description Apfx To check the status of the Tftp server, type Starting the Tftp ServerUpgrading Tftp Clients If the server is active its response is Reboot Filefb ib id Indicator Lights Overview Ethernet Lights Status indicator lights are labeled Status and ModeGroup Indicator Lights Status Lights Status Mode Error Status Error Status Description Mode Network Mode Lights Network Link Description Pcmcia Lights Baud Rate Power-Up Sequence Indicator Lights Access Point User’s Guide Product Specifications Electrical SpecificationsAppendix a Environmental Specifications Physical CharacteristicsAccess point complies with the following standards Appendix B RM180 Part Numbers Following chart lists RM180 part numbersRadio Operation RM180 Part Number Compatibility and Comments Remote Antenna Kits Antenna RegulationsWhip Antenna Medium Gain Patch Medium Gain Collinear Dipole High Gain Collinear DipoleCable Length Kit Part Number Antenna Adapter Cable High Gain Yagi GHz Antenna Cables and Connectors Model 2100 Antennas and CablesGHz Antennas Appendix C RM160 RM160 Part Number Compatibility and Comments Antenna Kit Part Number Page Appendix D RM111 Following chart lists radio part numbers Part Number Comments S-UHF antenna uses a standard BNC connector Antenna ConnectorWireless Hops Whip Antennas Site License TechnologyTransaction Rates Installation Guidelines # Frequencies # Wireless StationsPredicting Coverage Installing a Single Access Point Installing Multiple Access PointsExtending Coverage Reusing the Frequency Figure D-1 Increasing System Throughput Figure D-2 Option Frequency and Separation Guidelines Frequency Separation Absolute Minimum Appendix E Introduction Addressing Limitations Installation LimitationsOWL/IP Restrictions OWL/IP tunnels should not be used OWL/IP Safeguards Default Settings Addressing Limitations Flooding Restrictions Permanent Filters Access Point User’s Guide E-5 Default Filter Settings Subnet Filtering Password Security Operation OWL/IP Tunnel Tunnel Origination Building the Spanning Tree Establishing and Maintaining Tunnels Redundancy Frame Forwarding OutboundInbound Mobile IP Comparison Station Mobility OWL/IP Configuration Examples Example 1 Class C IP AddressesComparison Mobile IP Example Class C Configuration Step Option a Unicast Addressing Set TX Filters Following is the SubTypes 1 screen Action Scope DIX-IP-TCP Ports Drop Unlisted DIX-IP-UDP Ports Example 2 Class B IP Address Using Subnetting Example Class B Configuration Access Point User’s Guide E-21 Option C All Subnets Broadcast TX filter set up is identical to Example 1 page E-13 Appendix E OWL/IP Pin Number Signal Name Signal Level Appendix FDiag Port Pin-Outs Pin Number Signal Name AUI Port Pin-Outs Diag Port Cable Diag Port To 9-pin Male PC Port Standard Null Modem Cable Appendix F Port and Cable Pin-Outs Access Point User’s Guide Product Contents Appendix GAbout This Product Getting Started MIB-II Information Access Point MIB Information MIB FamilyPurpose Groups Access to Management Information Table G-2 shows access point MIB information Community String Access Type Description of Access Type Exclusions Will not be MIB-II Notes MIB Directory Group Meaning Summary Definition Product OIDs Snmp Version 1 ConfigurationGroup System Information Object Name Object Type Access MIB OutlineProduct OIDs CriticalErrors Critical Errors Information G-30 System Information Fsinfo Group Dir Group Interface Information G-32 PortState Group PortStats Group Ptxq Group Pmsg Group Snmp Version 1 Configuration Group TrapTarget Bridging Parameters BridgeStats Bridge Statistics page G-69 Brg Group Addr Group BsDesignatedRootSequence Control Groups SoftwareDownLoad Software Download page G-72 Following are the MIB definitions for the 6710 Access Point MIB Definitions 6710MIB.MIB Version Object Segment Object Identifier = file Sequence Dir Object Identifier = file Access Point User’s Guide G-29 CriticalErrors Object Identifier = sysErrors Access Point User’s Guide G-31 Nifx Object Identifier = nInterfaces Syntax Integer Appendix G MIB Access Point User’s Guide G-35 PortState Object Identifier = nInterfaces Integer UHF Syntax Gauge Access read-only Status mandatory TRUE, if the port supports pending messages = psEntry OBJECT-TYPE PstcPort Received unicast relay packets = pstcEntry Appendix G MIB Send packets discarded due to excessive delay = pstcEntry Ptxq Object Identifier = nInterfaces Access Point User’s Guide G-47 Appendix G MIB Pmsg Object Identifier = nInterfaces PmsgTable Syntax Integer Access Access Point User’s Guide G-51 Object Identifier Access Point User’s Guide G-53 CommunityEntry = Access Point User’s Guide G-55 Object Identifier RtDestination PhysAddress RtPort OBJECT-TYPE True if the destination is a non-OWL node = rtEntry Appendix G MIB Brg Object Identifier = nBridge Primary1 Addr Object Identifier = nBridge BrgState Object Identifier = nBridge BsAddress Appendix G MIB BsParentAddress OBJECT-TYPE Syntax PhysAddress Flooding level for multicast frames 0-3 = brgState BridgeStats Object Identifier = nBridge Secondary LAN bridge table entries = bridgeStats Out-of-sequence route delete errors = bridgeStats PowerUp Object Identifier = nControl Access Point User’s Guide G-73 END Access points provide the following functions Glossary Broadcast Flash Frame Frames sent toward the distribution LAN are inbound IP Subnet Multicast Address An octet is a byte composed of eight bits Radio Network Frames moving away from the distribution LAN are out- bound ROM Read-Only Memory Unicast Address Wireless Stations Index Index Access Point User’s Guide Index-3 Index-46710 Access Point User’s Guide Access Point User’s Guide Index-5 Index-66710 Access Point User’s Guide Access Point User’s Guide Index-7 Index-86710 Access Point User’s Guide Access Point User’s Guide Index-9 Index-106710 Access Point User’s Guide Access Point User’s Guide Index-11 Index-126710 Access Point User’s Guide Access Point User’s Guide Index-13 Index-146710 Access Point User’s Guide