U fiirso qoraalka hoose ka dibna ka jawaab su'aasha kadib isla luqadda qoraalka:  Passage: Nidaamka ugu badan ee loo isticmaalo maanta si loo taageero VLANs waa IEEE 802.1Q. IEEE 802.1 kooxdu waxay qeexday habkan loo adeegsado multiplexing VLANs si loo helo taageero VLAN oo badan. Ka hor inta aan la soo bandhigin heerka 802.1Q, dhowr borotokool oo gaar loo leeyahay ayaa jiray, sida Cisco Inter-Switch Link (ISL) iyo 3Com's Virtual LAN Trunk (VLT). Cisco waxay sidoo kale hirgalisay VLANs FDDI iyadoo ku wareejineysa macluumaadka VLAN cinwaanka IEEE 802.10, taas oo ka soo horjeeda ujeedada heerka IEEE 802.10.  Su'aal: Hab noocee ah ayaa la isticmaali jiray ka hor inta aan la soo saarin heerka 802.1Q?
Cisco Inter-Switch Link (ISL) iyo 3Com's Virtual LAN Trunk (VLT)