Cabletron Systems CSX200 User Manual

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

Contents

CSX Bridge View3-14The Bridge Statistics WindowThe Bridge Statistics window displays the following information:Bridging TypeCSX200/400 devices will always display transparent-only.Total PortsShows the total number of bridge ports available on this device, including virtualports available on the WAN interface(s).PortDisplays each port’s index number.IfIndexInterface index; a unique value for each network (interface) to which this portconnects. Note that a WAN port will connect to more than one interfacesimultaneously, such as a T1 connection that occupies one physical port but canbe divided into as many as 24 virtual ports.PortCircuitWhen dealing with X.25 virtual circuits, it’s possible for two Port Indexes to havethe same IfIndex. In such a case, Port Circuit contains the value of a MIB objectinstance unique to the port; otherwise, Port Circuit is equal to 0.0. For example, ifPort 1 maps to IfIndex 1 and Port 2 maps to Ifindex 1, then the Port Circuits are 1.1and 1.2 respectively.DelayExceedDiscardThe number of frames a port has discarded due to an excessive transit timethrough the bridge.MtuExceedDiscardMtu stands for “maximum transfer unit;” it is the largest frame size that can beprocessed by a device. A port discards any received frames that are larger than theMtu; this field lists how many such frames were discarded.The information in the Bridge Statistics window is a snapshot of the data. Whenyou open the Bridge Statistics window, the application polls the devices forinformation. Devices are not polled again until you click mouse button 1 on theUpdate button, or close, then re-open the Statistics window.NOTEWhen a device is reset, statistics windows and/or statistics displays in the Bridge Viewwindows may display very large numbers for one polling interval. This is due to theresetting of counters.