Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Tsarin da aka fi amfani dashi a yau don tallafawa VLANs shine IEEE 802.1Q. The IEEE 802.1 aiki kungiyar ayyana wannan hanya na multiplexing VLANs a cikin wani kokarin samar da multivendor VLAN goyon baya. Kafin gabatarwar daidaitaccen 802.1Q, akwai ladabi da yawa na mallaka, kamar su Cisco Inter-Switch Link (ISL) da 3Com's Virtual LAN Trunk (VLT). Cisco kuma ya aiwatar da VLANs a kan FDDI ta hanyar ɗaukar bayanan VLAN a cikin taken IEEE 802.10, akasin manufar IEEE 802.10.  Tambaya: Waɗanne hanyoyi aka yi amfani da su kafin ka'idar 802.1Q?
Cisco Inter-Switch Link (ISL) da kuma 3Com ta Virtual LAN Trunk (VLT)