IEEE Std 802.1Qca-2015 pdf download – Local and metropolitan area networks- Bridges and Bridged Networks Amendment 24: Path Control and Reservation

02-23-2022 comment

IEEE Std 802.1Qca-2015 pdf download – Local and metropolitan area networks- Bridges and Bridged Networks Amendment 24: Path Control and Reservation.
3.x constrained tree: A tree meeting a certain constraint, e.g., providing a minimal available bandwidth. 3.x constrained routing (CR): Shortest path routing on a topology pruned to only contain the links meeting a given constraint. 3.x Constrained Shortest Path First (CSPF): The phrase for the Dijkstra Shortest Path First Algorithm when it is run after pruning the links not meeting a given constraint. 3.x cut-bridge: A Bridge whose removal partitions the network. 3.x cut-link: A link whose removal partitions the network. 3.x Directed Acyclic Graph (DAG): A directed graph containing no directed cycle. 3.x Explicit Tree (ET): An explicitly defined tree, which is specified by its Edge Bridges and the paths among the Edge Bridges. If only the Edge Bridges are specified but the paths are not, then it is a loose explicit tree. If the paths are also specified, then it is a strict explicit tree. 3.x Explicit Tree Database (ETDB): A database storing explicit trees. 3.x Generalized Almost Directed Acyclic Graph (GADAG): A directed graph that has only Almost Directed Acyclic Graphs (ADAGs) as all of its topology blocks. 3.x Intermediate System to Intermediate System (IS-IS) Path Control and Reservation (ISIS-PCR): IS-IS with the Path Control and Reservation extensions specified by Clause 45 of IEEE Std 802.1Qac-2015. 3.x Loop-Free Alternate (LFA): A loop-free backup path for local repair after a failure event. 3.x Maximally Redundant Trees (MRTs): A pair of trees with a common MRT Root where the path from any leaf Bridge to the MRT Root along the first tree (MRT-Blue) and the path from the same leaf Bridge along the second tree (MRT-Red) share the minimum number of Bridges and the minimum number of links. Each such shared Bridge is a cut-bridge. Any shared links are cut-links. If more than two maximally redundant trees are needed, then they are handled as individual static explicit trees as explained in 45.3.2 of IEEE Std 802.1Qac-2015. 3.x MRT-Blue: One of the two Maximally Redundant Trees (MRTs)

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