(EN) Shuang Yu, IEEE APPROVES NEW IEEE 802.1aq™ SHORTEST PATH BRIDGING STANDARD, su standards.ieee.org, IEEE Standards Association. URL consultato il 19 giugno 2012 (archiviato dall'url originale il 14 maggio 2013).
«Using the IEEE’s next-generation VLAN, called a Service Interface Identifier (I-SID), it is capable of supporting 16 million unique services compared to the VLAN limit of four thousand.»