Shortest Path Bridging
The IEEE approved the IEEE 802.1aq standard May 2012, also known and documented in most books as Shortest Path Bridging (SPB). SPB allows all links to be active through multiple equal cost paths, and provides much larger layer 2 topologies, faster convergence, and improves the use of the mesh topologies through increase bandwidth between all devices by allowing traffic to load share across all paths on a mesh network. SPB consolidates multiple existing functionalities, including Spanning Tree Protocol (STP), Multiple Spanning Tree Protocol (MSTP), Rapid Spanning Tree Protocol (RSTP), and Multiple MAC Registration Protocol (MMRP) into a one link state protocol. SPB is designed to virtually eliminate human error during configuration and preserves the plug-and-play nature that established Ethernet as the de facto protocol at Layer 2.
Read more about this topic: Spanning Tree Protocol, Evolutions and Extensions
Famous quotes containing the words shortest, path and/or bridging:
“Cultivated labor drives out brute labor. An infinite number of shrewd men, in infinite years, have arrived at certain best and shortest ways of doing, and this accumulated skill in arts, cultures, harvestings, curings, manufactures, navigations, exchanges, constitutes the worth of our world to-day.”
—Ralph Waldo Emerson (1803–1882)
“Tired,
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her lover would take
as far as her eyes could see.
On the roads,
traffic ceased
at the end of day
as night slid over the sky.
The traveller’s pained wife
took a single step towards home,
said, “Could he not have come at this instant?”
and quickly craning her neck around,
looked up the path again.”
—Amaru (c. seventh century A.D.)
“When its errands are noble and adequate, a steamboat bridging the Atlantic between Old and New England, and arriving at its ports with the punctuality of a planet, is a step of man into harmony with nature.”
—Ralph Waldo Emerson (1803–1882)