Cabletron Systems 2000 User Manual

Also see for 2000: User guide Getting started guide

Contents

Viewing Chassis Information2-15The SmartSwitch 2000 Chassis View• N/A (not available) when SPECTRUM Element Manager cannot determinethe link status for the port.Port AssignmentIf you choose Port Assignment, each port’s status box will display a letter whichdesignates its current repeater channel assignment (A-H).Errors or Frame SizeIf you choose the Errors or Frame Size modes, additional menus offer thefollowing options for each mode:Errors Total Errors, Collisions, Alignment, CRC, Runts, Giants,or OOW CollisionsFrame Size Runts, 64-127, 128-255, 256-511, 512-1023, 1024-1518, orGiantsThe port status boxes will display the percentage for each active port thatrepresents what portion of that port’s total traffic is of the specific type (Errors orFrame Sizes) that you selected.Select one of the Errors options to see what percentage of the total packetsreceived by each active port during the last polling interval was of the error typeyou selected. This percentage reflects the number of errors generated by devicesconnected to that port in relation to the total number of packets processed by theport (errors ÷ [errors + packets]).Choose the Frame Size option to check on the sizes, in bytes, of frames passingthrough your ports. The percentages are calculated just like the Errors selectiondescribed above: the number given represents the number of packets of theNOTEBecause BNC thin coax and AUI ports do not support the link feature, the displayedAdmin/Link, Admin, and Link status conditions will not always follow the patterndescribed above:Under Admin/Link status mode, BNC ports will display as ON if there is a validconnection and the port has been enabled; OFF if the port has been disabled; and SEG ifthe port has experienced 33 consecutive collisions or if there is no cable attached. An AUIport will display as ON if the port has been enabled (regardless of whether or not there is avalid connection), OFF if the port has been disabled, and SEG if the port has detected 33consecutive collisions. Note that the Admin/Link status displays for BNC and AUI portscan be misleading in terms of troubleshooting; be sure to keep in mind that a BNC portdisplaying as segmented may only have had its cable disconnected, and an AUI port thatappears to be on and linked may not have any cable attached.Under Admin status mode, AUI and BNC ports will display as ON if the port has beenenabled, and OFF if it has been disabled; as with other port types, these ON and OFFconditions indicate nothing about link status.Under Link status mode, AUI and BNC port display boxes will display N/A, indicatingthat SPECTRUM Element Manager is unable to determine their link status.