Using the Find Source Address Feature | Cabletron Systems 9A128-01

The 9A128-01 Module View

Packets Received (Received only)

Displays the number of packets received by the selected interface.

Transmit Queue Size (Transmit only)

Displays the number of packets currently queued for transmission from this interface. The amount of device memory devoted to buffer space, and the trafﬁc level on the target network, determine how large the output packet queue can grow before the 9A128-01 will begin to discard packets.

Packets Transmitted (Transmit only)

Displays the number of packets transmitted by this interface.

Making Sense of Interface Statistics

The statistics available in this window can give you an idea of how an interface is performing; by using the statistics in a few simple calculations, it’s also possible to get a sense of an interface’s activity level:

To calculate the percentage of input errors:

Received Errors /Packets Received

To calculate the percentage of output errors:

Transmitted Errors /Packets Transmitted

To calculate the total number of inbound and outbound discards:

Received Discards + Transmitted Discards

To calculate the percentage of inbound packets that were discarded:

Received Discards /Packets Received

To calculate the percentage of outbound packets that were discarded:

Transmit Discards /Packets Transmitted

Using the Find Source Address Feature

You can select the Find Source Address option to discover which bridging interface a speciﬁed source MAC address is communicating through. When you select the Find Source Address option, a search is made of the 802.1d Bridge Filtering Database to discover the bridge interface associated with the address that you specify. If the search is successful, the corresponding interface will ﬂash in the Module View window. For more information on the Filtering Database and bridging in general, refer to Chapter 5, Bridging.

Use the Find Source Address option as follows:

1. Click to display the Device menu.

Viewing Module Information

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Cabletron Systems 9A128-01 manual Using the Find Source Address Feature, Packets Received Received only

Contents

Cabletron Systems Virus Disclaimer Page Restricted Rights Notice Page Contents Index Chapter Fddi ManagementChapter Bridging Using This Guide Introduction Related Reading Software Conventions Common Window FieldsDevice Name IP Address Using Buttons Using On-line HelpGetting Help Location Getting Help from the Cabletron Systems Global Call Center FTP Firmware Versions Supported 9A128-01 Module View Viewing Module Information Front Panel Information Boot Prom Connection StatusUpTime Port Status Date Menu StructureTime A128-01 Module View Menu Structure Device Menu Port Status Menu Fddi Menu Utilities MenuHelp Menu Board Menus Port Status Displays Port Menus Selecting a Port Status View Bridge Port Status Displays Bridge Port State Bridge MappingBridge Port Status Color Codes Fddi Port Status Displays Connection State LER Estimate Chassis Manager Window Fddi Port Status Color Codes Module Type Viewing Hardware TypesDevice Type Viewing I/F Summary Information Module Type Window Index DescriptionSta Interface Performance Statistics/Bar Graphs Raw Counts Load Rate Interface Statistics Window Error AddressUnicast Non-Unicast Using the Find Source Address Feature Packets Received Received onlyTransmit Queue Size Transmit only Packets Transmitted Transmit only Setting the Device Date and Time Managing the Hub Enabling and Disabling Ports Bridge Ports Module Ports Accessing the ATM Connections Window ATM Conﬁguration ATM Conﬁguration Connection Data Settings VPI Conﬁguring Connections Adding a New Connection Deleting a Connection ATM Conﬁguration Conﬁguring Connections Fddi Management Conﬁguration Fddi Management MAC State Neg. Negotiated SMT VersionReq. Requested Target Token Rotation Time Concentrator M Ports Concentrator Non-M PortsNumber of MACs MAC Path Connection Policy 15 32,768 a permanently set value for this bit Number of Nodes Address ModeStation List Stations Panel Node ClassTopology Upstream Neighbor Performance Frame Errors Transmit FramesReceive Frames Lost Frames Fddi Management Performance Bridging Bridge Status Window Bridging Up Time Bridge State on InterfaceInterface Type Bridge Address Conﬁguring Duplex Modes Enabling and Disabling Bridging Bridge Statistics Performance Graphs Forwarded Green Total Errors Red Filtered MagentaXmitted Blue Conﬁguring the Bridge Performance Graphs Errors ForwardedFiltered Xmitted Forwarded from Interface Statistics WindowForwarded to Description Using Source Addressing Setting the Ageing Time Port Source Addresses Window Bridge Spanning Tree Conﬁguring the Bridge Spanning Tree Window Bridge Priority Root Bridge Root CostRoot Port Protocol Forwarding Delay Hello TimeMax Age Hold Time Changing Bridge Spanning Tree Parameters Changing Hello Time Changing Bridge PriorityChanging the Spanning Tree Algorithm Protocol Type Changing Port Priority Changing Forwarding Delay TimeChanging Max Age Time Filtering Database Changing Path Cost Bridging Bridging List NumberCapacity Ageing Time Port Filtering Conﬁguring the Filtering DatabaseReceive Port Altering the Ageing Time Changing the Type of EntryChanging the Receive Port Changing the Port Filtering Action Clearing All Permanent, Static, or Dynamic Entries Bridging Filtering Database Index Index-2 Index-3 Index Index-4