Cabletron Systems CSX200 User Manual

Also see for SPECTRUM: User guide User guide User guide User guide Guide

Contents

CSX Bridge View3-34Creating Bridge Traffic Charts, Graphs and MetersDesignated CostThe cost of the path from this port to the Root Bridge on the network. If thehighlighted port is the Root Port, the Designated Cost is 0. If this bridge is theRoot Bridge, all its bridge ports have a Designated Cost of 0. This value iscompared to the Root Path Cost field in received configuration BPDUs.Designated RootThe unique Bridge Identifier of the bridge that is assumed to be the Root Bridgeon the network; this information is contained in the Configuration BPDUs.Designated BridgeDisplays the MAC address and priority component of the Bridge ID for the bridgethat is believed to be the Designated Bridge for the network segment associatedwith this port.The Designated Bridge ID, along with the Designated Port and Port Identifierparameters for the port, is used to determine whether this port should be theDesignated Port for the network segment to which it is attached.Designated PortThe Port ID of the port on the Designated Bridge for this port’s segment. TheDesignated Port is the bridge port that offers the lowest path cost to the RootBridge.Forward TransitionsThe number of times this port has moved from the Learning state to theForwarding state since the device was started or since it was last reset.Changing a Port’s STA ParametersTo change a port’s Priority or Path Cost:1. In the scroll list, click mouse button 1 on the port you want to change (use thescroll bar if necessary to display the desired port). You can only select oneport at a time. The highlighted port’s Spanning Tree parameters appear in theboxes below the list.2. Highlight and edit the Priority and Path Cost boxes as required. After youtype in the new value in a box, press Enter or Return on the keyboard.Creating Bridge Traffic Charts, Graphs and MetersThe Bridge application uses the SPMA Charts, Graphs and Meters tools to depictbridge statistics describing activity at the bridge-port level. Once running,however, a pie chart, graph or meter is independent from the application where itwas started. Although the windows you open to create pie charts, graphs andmeters have unique variable lists, the procedures for creating a pie chart, a graphor a meter are the same.