Address, Non-Unicast, Discarded | Cabletron Systems 9A128-01

The 9A128-01 Module View

Three informational ﬁelds appear in the upper portion of the window:

Description

Displays the interface description for the currently selected port: Ctron SMB 1, Ctron SMB 10, FDDI, or ATM.

Address

Displays the MAC (physical) address of the selected port.

Type

Displays the interface type of the selected port: sdlc (for SMB 1), ethernet-csmacd (for SMB 2), fddi, or atm.

The lower portion of the window provides the following transmit and receive statistics; note that the ﬁrst four statistics are also graphically displayed in the pie charts.

Unicast

Displays the number of packets transmitted to or received from this interface that had a single, unique destination address. These statistics are displayed in the pie chart, color-coded green.

Non-Unicast

Displays the number of packets transmitted to or received from this interface that had a destination address that is recognized by more than one device on the network segment. The non-unicast ﬁeld includes a count of broadcast packets — those that are recognized by all devices on a segment. These statistics are displayed in the pie chart, color-coded dark blue.

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 you network to add additional bridges or switches. 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.

2-18	Viewing Module Information

Image 31

Cabletron Systems 9A128-01 manual Address, Non-Unicast, Discarded, Error, Unknown Protocol Received only

Contents

Cabletron Systems Virus Disclaimer Page Restricted Rights Notice Page Contents Chapter Bridging Chapter Fddi ManagementIndex Introduction Using This Guide Related Reading IP Address Software ConventionsCommon Window Fields Device Name Location Using ButtonsUsing On-line Help Getting Help FTP Getting Help from the Cabletron Systems Global Call Center Firmware Versions Supported 9A128-01 Module View Front Panel Information Viewing Module Information Port Status Boot PromConnection Status UpTime Time Menu StructureDate Device Menu A128-01 Module View Menu Structure Port Status Menu Board Menus Fddi MenuUtilities Menu Help Menu Port Menus Port Status Displays Bridge Port Status Displays Selecting a Port Status View Fddi Port Status Displays Bridge Port StateBridge Mapping Bridge Port Status Color Codes LER Estimate Connection State Fddi Port Status Color Codes Chassis Manager Window Device Type Viewing Hardware TypesModule Type Module Type Window Viewing I/F Summary Information Interface Performance Statistics/Bar Graphs IndexDescription Sta Load Raw Counts Interface Statistics Window Rate Non-Unicast ErrorAddress Unicast Packets Transmitted Transmit only Using the Find Source Address FeaturePackets Received Received only Transmit Queue Size 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 Req. Requested Target Token Rotation Time SMT VersionNeg. Negotiated MAC Path Concentrator M PortsConcentrator Non-M Ports Number of MACs Connection Policy 15 32,768 a permanently set value for this bit Station List Address ModeNumber of Nodes Upstream Neighbor Stations PanelNode Class Topology Performance Lost Frames Frame ErrorsTransmit Frames Receive Frames Fddi Management Performance Bridging Bridging Bridge Status Window Bridge Address Up TimeBridge State on Interface Interface Type Conﬁguring Duplex Modes Enabling and Disabling Bridging Performance Graphs Bridge Statistics Forwarded Green Conﬁguring the Bridge Performance Graphs Total Errors RedFiltered Magenta Xmitted Blue Xmitted ErrorsForwarded Filtered Forwarded to Interface Statistics WindowForwarded from Description Using Source Addressing Port Source Addresses Window Setting the Ageing Time Bridge Spanning Tree Bridge Priority Conﬁguring the Bridge Spanning Tree Window Protocol Root BridgeRoot Cost Root Port Hold Time Forwarding DelayHello Time Max Age Changing Bridge Spanning Tree Parameters Changing the Spanning Tree Algorithm Protocol Type Changing Bridge PriorityChanging Hello Time Changing Max Age Time Changing Forwarding Delay TimeChanging Port Priority Changing Path Cost Filtering Database Bridging Bridging Ageing Time ListNumber Capacity Receive Port Conﬁguring the Filtering DatabasePort Filtering Changing the Port Filtering Action Altering the Ageing TimeChanging the Type of Entry Changing the Receive Port Clearing All Permanent, Static, or Dynamic Entries Bridging Filtering Database Index Index-2 Index-3 Index Index-4