Enterasys Networks ENTERASYS ATX manual Using ATX Port Filtering

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Using ATX Port Filtering

If you want to filter on a single source or destination address, make sure the address is

TIP entered in both the Begin and End text boxes.

You can use both the source and destination address fields to filter data based on equipment vendor, since the first three bytes of a MAC address are unique to a specific vendor. For example, Sun workstations have a MAC address with the first three bytes 08:00:20. By setting a filter range of 08:00:20:00:00:00 to 08:00:20:FF:FF:FF, you could filter all Sun workstation traffic on a particular segment.

7.You can use a data field value as a filter criteria by using the Field Offset parameters. A data field value allows you to examine a packet (at a location specified by a data Field Offset) for up to 64 bytes of data that will act as the filtering criteria. To specify the portion of the packet you want examined, you indicate where you want the data field to be examined (relative to an Origin point), and enter the data value that you want to filter on (using a mask if necessary to ignore any “don’t care” bytes). To use the Field Offset parameters:

a.In the Filter Parameters section, click on the Field Offset check box to activate the Field Offset text fields.

b.Indicate whether you want the specified field offset to be exclusive or inclusive for filtering purposes.

1.) Click to activate (highlight) the Don’t Match check box if you want the packet to be filtered if it does not match the field offset value.

2.) Click to de-activate (gray-out) the Don’t Match check box if you want to the packet to be filtered if it matches the field offset value. This is the default.

c.Click in the Offset text field, and type in the offset — in hexadecimal — that indicates the number of bytes from the origin (discussed in the next step) at which you want to begin examining the packet’s data field. For example, an Offset of 1A indicates that you want to examine the packet starting 26 bytes after the specified origin point.

d.Click on the Origin: button to determine where you want the field offset to begin:

1.) Select MAC if you want the offset to be applied relative to the beginning of the MAC addresses; an offset of 0 indicates the start of the destination MAC address.

2.) Select IP if you want the offset to be relative to the end of the IP header; an offset of 0 indicates the portion immediately following the end of the IP header.

3.) Select SR if you want the offset to be relative to the end of the MAC header, including the Source Routing (SR) header, if present.

4-8

Editing the Port Filters Table

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Contents ATX User’s Guide Page Virus Disclaimer Page Restricted Rights Notice Page Contents Chapter Workgroup Configuration Chapter Using ATX TrunkingChapter Using ATX Port Filtering Chapter ATX Port MirroringIntroduction Using the ATX Switch User’s Guide Related ManualsCommon ATX Switch Window Fields Software ConventionsUsing Window Buttons Getting Help Using On-line HelpGetting Help from the Global Technical Assistance Center Login ATX Switch Chassis View ATX Switch Chassis View Viewing Chassis InformationConnection Status Front Panel InformationPort Status Menu Structure Boot PromFirmware Device Menu Port Status MenuHelp Menu Utilities MenuPPE Module Menu PPE Port Menu Port Status DisplaysModule Menu Port MenuSelecting a Port Status View StatusPort Status Color Codes Chassis Manager Window Viewing Hardware TypesModule Type Text Boxes Interface DescriptionManaging the Hub IPX RoutingConfiguring IPX Routing on a port Selecting the Frame Type for a PortIP Routing IP Config/Routing windowIP Mask Configuring the IP Address TableIndex Port Configuring IP Routing on a PortPort Configuration Broadcast ProtectionBridge Port Configuration Local SwitchingRing Speed Setting the Bridge Mode 11. Bridge Configuration windowRing Number Transmitting BPDUsSource Route Configuration Bridge NumberSetting the Spanning Tree Explorer Mode Token Ring TranslationIPX Source Route IPX FramingARP Translate ARP Source Route Netbios Source RouteTo set the Token Ring Translation Parameters Using the Find Source Address Feature Viewing I/F Summary InformationIndex Logical StatusInterface Performance Statistics/Bar Graphs Raw CountsRate Viewing Interface DetailUnicast DescriptionAddress Non-UnicastMaking Sense of Detail Statistics Administratively Enabling and Disabling Ports Enabling and Disabling PortsATX Switch Chassis View Managing the Hub Using ATX Trunking Port Trunking Window StateRmt Bridge Id Last ErrorRmt IP Address Link Count Enabling and Disabling TrunkingLink Ordinal Last ChangeUsing ATX Trunking Using ATX Trunking Port Trunking Window Using ATX Port Filtering Using ATX Port Filtering Pseudo Port Filters Table InformationId Identifier ProtocolEditing the Port Filters Table Adding a New Filter Using ATX Port Filtering Using ATX Port Filtering Using ATX Port Filtering Using ATX Port Filtering Last Frame Address Viewing Filter StatisticsDeleting a Port Filter PacketsWorkgroup Configuration Workgroup Configuration Virtual Workgroups Window Configuring a Workgroup TotalDeleting a Workgroup Workgroup Configuration Configuring a Workgroup ATX Port Mirroring Port Mirroring Window ATX Port MirroringConfiguring Port Mirroring From the device where the mirrored ports are located If the ports being mirrored are remoteFrom the device where the diagnostic port is located ATX Port Mirroring Port Mirroring Window IPX Routing Tables Port# IPX StatisticsIPX Interface IPX NetworkIPX Route Age Hop CountNext Hop Tick CountNodeID SocketIPX Routing Tables Index Index-2 Index-3 Index Index-4
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