802.1D is the IEEE MAC Bridges standard which includes Bridging, Spanning Tree and others. It is standardized by the IEEE 802.1 working group. It includes details specific to linking many of the other 802 projects including the widely deployed 802.3 (ethernet), 802.11 (WiFi) and 802.16 (WiMax) standards.
VLANs (virtual LANs) are not part of 802.1D, but specified in 802.1Q.
- 1990 — Original publication (802.1D-1990), based on the ISO/IEC 10038 standard
- 1998 — Revised version (802.1D-1998), incorporating the extensions 802.1p, P802.12e, 802.1j and 802.6k.
- 2004 — Revised version (802.1D-2004), incorporating the extensions 802.11c, 802.1t and 802.1w, which were separately published in 2001, and removing the original Spanning tree protocol, instead incorporating the Rapid Spanning Tree Protocol (RSTP) from 802.1w.