Hi, we have a Cisco SG250-26P. This vendor, does not support DTP. But when we were doing some configuration and tests, we noticed that sometimes VLAN ports changed it's states from access to trunk. How it can be possible?
Well the problem is that I can't disable autonegotiation (config)#int gi2(config-if)#switchport mode access(config-if)#switchport nonegotiate% Wrong number of parameters or invalid range, size or characters entered
@Deepak Kumar wrote:Hi,Cisco SG250-26P is supporting to the DTP and another vendor may also be understanding the DTP protocol or sending DTP packet. Share another device make and model for more information. Another device is Draytek Vigor 3900 confi...
