First check the configuration of the device that is plugged into the port with exdessive collisons. Make sure it and the ports are set to autodetect speed and duplex. If not, change them both and reboot the device.
If this doesn't take care of the problem, take the device that is plugged into the port with excessive collisions and move it to a different port. If the collisions follow the device, replace the NIC in the device.
If you can't reduce the high number of collisions that you are experiencing on your Hub stack, my recommendation would be to break the 3Com stack. Uplink each of the hubs individually to a seperate port on the switch and eliminate the problem.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.