08-21-2009 04:51 AM - edited 03-06-2019 07:21 AM
Hi,
I'm getting collisions on a port on my 3750 where a 3com 10/100mb hib is attached. Due to hubs working in half duplex I decided to set the interface to "duplex half" and "speed auto" and the port goes down (no green or amber lights). If I set the interface to "duplex half" "speed 100" I get the same response, as soon as I do a "no duplex" and "no speed" the interface comes back up with and works but with collisons.
i thought setting to half duplex will remove the collisions not the function of the port :/ ?
08-21-2009 04:55 AM
"i thought setting to half duplex will remove the collisions not the function of the port :/ ?"
No it wont. If the link is running at half duplex then you will always see collisions. That is the whole idea of using a switch and running full duplex on the links ie. no collisions.
Is there a reason you are connecting hubs to your switches ?
Jon
08-21-2009 05:00 AM
The single port goes into a test domain running tonens of packet ininstecting tools and sniffers. I span various ports from my stack to this port and the servers on the test domain get the info to analyse.
So a hub on a switch will always see collisions, no probs.
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