Problem to capture Tagged Frames(802.1q)


Hi all,

I’m trying to monitorize the frames that a switch port sends and receives. This port has connected an IP Phone and the frames are tagged(I’m sure).

I have mirrored that port and I capture with a laptot all the traffic but, in the layer 2 part of the paquet, I can’t see the Vlan ID, or the CoS etc…

The faq says that when you monitorize using a mirror you can see the Vlan Information of that paquet…

Please, ¿why I cannot view the vlan information of the paquets that I monitorize? The interface attached to that port is member of the native Vlan(logycally).