Hi guys,
Have a 48 ports module on a 4006. All ports are on the same VLAN and are working fine until today, suddenly some PCs got connection on and off. After checking, realised that the first 12 ports are having the same problem. How can i check whether it's a hardware problem? Did a "sh int" seems fine to me. There are some ports when i plug in the cable, no lights showing the port is connected at all...
