IEEE 802.1aq-2012 PDF
This amendment to IEEE Std 802.1Q-2011 specifies shortest path bridging of unicast and multicast frames, including protocols to calculate multiple active topologies that can sharelearned station information, and support of a virtual local area network (VLAN) by multiple, per topology VLAN identifiers (VIDs).
Amendment Standard – Superseded. This amendment to IEEE Std 802.1Q-2011 specifies shortest path bridging of unicast and multicast frames, including protocols to calculate multiple active topologies that can share learned station information, and support of a virtual local area network (VLAN) by multiple, per topology VLAN identifiers (VIDs). (Additional downloads for this standard are attached or can be downloaded at http://standards.ieee.org/downloads/802.1/index.html)