I have multipul 6509's at my access layer. I am currently experiancing ports going error disabled due to late collisions. My connections to my devices are 100/full. My concern is that I have just had a 100/Half connected device go error disable with late collisions. The threshold is the Default of 5 but, the counters registered only 3 late collisions when it went error disabled. This seems like there is a problem with the switch. Does anyone know if there is a IOS Bug fix for this sensitivity problem?
Here is my switch information:
WS-C6509 Software, Version NmpSW: 5.4(3)
Copyright (c) 1995-2000 by Cisco Systems
NMP S/W compiled on May 31 2000, 20:17:28
System Bootstrap Version: 5.3(1)
System Web Interface Version: Engine: 5.1 ADP device: Cat6000 ADP Version: 1.2 A
Hardware Version: 2.0 Model: WS-C6509 Serial #: SCA042101MA
Thank You for the information, I will be reading this tonight. I agree with the duplex mismatch causing the issue but, Looking at the device and looking at the switch port, the both match but, I have not ruled out that some one is not telling the truth. My concern is that I expected to see the error counter at 5 or greater and not less.....
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