> That's why the new Ethernet protocol 802.11aq is recommending Shortest Path Bridging (SPB) as a robust alternative to Spanning Tree Protocol (STP). This is a

> That's why the new Ethernet protocol 802.11aq is recommending Shortest Path Bridging (SPB) as a robust alternative to Spanning Tree Protocol (STP). This is a dead letter standard: most folks who would 'need' SPB are probably using BGP EVPN to reduce the Layer 2 'blast radius'. It should also be noted that the IEEE was dragged kicking and screaming towards SPB: originally TRILL was proposed, but the IEEE rejected it, and so the IETF published: * https://en.wikipedia.org/wiki/TRILL_(computing) https://en.wikipedia.org/wiki/TRILL_(computing) IEEE realized their mistake and published SPB, so now there are two L2 standards. Not many folks who either though, with anyone really needing 'large scale' stuff moving towards L3 solutions.