On Fri, 2004-11-26 at 14:47, mnikhil m wrote: > I think it s also called trunk port right ? > Actually, what I think he originally intended was to call it a SPAN port, not SNAP. Some also refer to it as a mirror port... The intent is to disable the normal Forward/Filter decision done by a switch and make that port similar to the old "hubs/repeaters".... But, as to Trunk Port, that actually refers to the idea of a port passing multiple VLANs worth of information, usually used to connect two switches together. But, be careful, the crafting of packets on a Trunk Port are different than the standard packet that is sent out non-Trunk ports. Depending on your switch it might be doing ISL encapsulation of the regular Ethernet packet or it might be using 802.1q embedding the VLAN information in the middle of the Ethernet packet header. In any event, it's different..... --Rob
