DUA1840-0AAA015-10 CHAPTER 5: STATUS MONITORING AND STATISTICSShort Events This counter is incremented by one for each carrier eventwhose duration is less than the short event maximum time. Shortevents are error frames smaller than the minimum size defined for802.3 frames. They may indicate externally generated noise causingproblems on the network. Check the cabling routing and re-route anycabling which may be affected by external noise sources.Late Events This counter is incremented by one each time a collisionoccurs after the valid packet minimum time. A late event is anout-of-window collision that may occur if your 802.3 LAN exceeds themaximum size as defined in the IEEE standard. A late event is alsocounted as a collision.Long Frames This counter is incremented by one each time a frame isreceived whose octet count is greater than the maximum frame sizebut less than Jabber frame size. Long Frames are frames that exceedthe maximum size defined for 802.3 frames (1518 octets). If you see ahigh number of long frames on your network, you should isolate thesource of these frames and examine the transceiver or adapter card atthe device. Some protocols may generate these frames.Jabbers The total number of packets received that were longer than 8Koctets (excluding framing bits, but including FCS octets).CLEAR SCREEN COUNTERS Select this button to set all countersshown on the screen to zero. It is useful for trend analysis if you wish tosee changes in counters over a short period of time. This button doesnot clear the counters on the device or affect counters at the networkmanagement station.
