Using Source Addressing, Discarded | Cabletron Systems 9A128-01

Bridging

Discarded

Displays the number of packets which were discarded even though they contained no errors that would prevent transmission. Good packets are typically discarded to free up buffer space when the network becomes very busy; if this is occurring routinely, it usually means that network trafﬁc is overwhelming the device. To solve this problem, you may need to re-conﬁgure your bridging parameters, or perhaps re-conﬁgure your network to add additional bridges. Consult the Cabletron Systems Network Troubleshooting Guide for more information.

These statistics are displayed in the pie chart, color-coded magenta.

Error

Displays the number of packets received or transmitted that contained errors. These statistics are displayed in the pie chart, color-coded red.

Unknown Protocol (Received only)

Displays the number of packets received which were discarded because they were created under an unknown or unsupported protocol.

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.

Using Source Addressing

You can use the Port Source Addresses window to view the MAC addresses that are communicating through a selected bridge interface.

To open the Source Addresses window from the Bridge Status window:

1.Click on the individual index ( ) of the bridge interface of interest. The port menu will appear.

2.Select Source Addressing.... The Source Addresses window, Figure 5-7, will appear.

5-12	Using Source Addressing

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Cabletron Systems 9A128-01 manual Using Source Addressing, Discarded

Contents

Cabletron Systems Virus Disclaimer Page Restricted Rights Notice Page Contents Index Chapter Fddi ManagementChapter Bridging Introduction Using This Guide Related Reading Common Window Fields Software ConventionsDevice Name IP Address Using On-line Help Using ButtonsGetting Help Location FTP Getting Help from the Cabletron Systems Global Call Center Firmware Versions Supported 9A128-01 Module View Front Panel Information Viewing Module Information Connection Status Boot PromUpTime Port Status Date Menu StructureTime Device Menu A128-01 Module View Menu Structure Port Status Menu Utilities Menu Fddi MenuHelp Menu Board Menus Port Menus Port Status Displays Bridge Port Status Displays Selecting a Port Status View Bridge Mapping Bridge Port StateBridge Port Status Color Codes Fddi Port Status Displays LER Estimate Connection State Fddi Port Status Color Codes Chassis Manager Window Module Type Viewing Hardware TypesDevice Type Module Type Window Viewing I/F Summary Information Description IndexSta Interface Performance Statistics/Bar Graphs Load Raw Counts Interface Statistics Window Rate Address ErrorUnicast Non-Unicast Packets Received Received only Using the Find Source Address FeatureTransmit Queue Size Transmit only Packets Transmitted Transmit only Managing the Hub Setting the Device Date and Time Bridge Ports Enabling and Disabling Ports Module Ports ATM Conﬁguration Accessing the ATM Connections Window Connection Data ATM Conﬁguration VPI Settings Adding a New Connection Conﬁguring Connections Deleting a Connection ATM Conﬁguration Conﬁguring Connections Fddi Management Fddi Management Conﬁguration MAC State Neg. Negotiated SMT VersionReq. Requested Target Token Rotation Time Concentrator Non-M Ports Concentrator M PortsNumber of MACs MAC Path Connection Policy 15 32,768 a permanently set value for this bit Number of Nodes Address ModeStation List Node Class Stations PanelTopology Upstream Neighbor Performance Transmit Frames Frame ErrorsReceive Frames Lost Frames Fddi Management Performance Bridging Bridging Bridge Status Window Bridge State on Interface Up TimeInterface Type Bridge Address Conﬁguring Duplex Modes Enabling and Disabling Bridging Performance Graphs Bridge Statistics Forwarded Green Filtered Magenta Total Errors RedXmitted Blue Conﬁguring the Bridge Performance Graphs Forwarded ErrorsFiltered Xmitted Forwarded from Interface Statistics WindowForwarded to Description Using Source Addressing Port Source Addresses Window Setting the Ageing Time Bridge Spanning Tree Bridge Priority Conﬁguring the Bridge Spanning Tree Window Root Cost Root BridgeRoot Port Protocol Hello Time Forwarding DelayMax 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 Changing Path Cost Filtering Database Bridging Bridging Number ListCapacity Ageing Time Port Filtering Conﬁguring the Filtering DatabaseReceive Port Changing the Type of Entry Altering the Ageing TimeChanging 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