IEEE 1910.1-2020

The scope of this document is as follows: a) In bridged networks running MTBP, ports shall be identified as either a meshed tree port that participates in the meshed tree resolution, or a host port, to which a local host is connected. Only meshed tree ports are allowed to participate in the meshed tree resolution. b) MTBP provides superior fault tolerance by preconfiguring several logical trees from a root. One of these logical trees is considered the primary tree and is used for forwarding broadcast frames. In the event of a network component failure and immediately on failure detection of the primary branch, broadcast frame forwarding is taken over by any one of the other preconfigured tree branches. This is achieved with minimal message dissemination and delay. c) The addition of a bridge configured to run MTBP will allow the bridge to send a request to join (via MT_JOIN message) message to all other bridges to which it is connected. The new bridge will join the bridges already in the topology. The new bridge then receives multiple invitations from its neighbors to join tree branches that they are already part of. The new bridge decides to join the multiple tree branches and stores the multiple paths in order of preference. One of these paths shall be the path for broadcast frame forwarding.