Editing Load balancing (computing) (section)

====Shortest Path Bridging====
[[TRILL]] (Transparent Interconnection of Lots of Links) facilitates an [[Ethernet]] to have an arbitrary topology, and enables per flow pair-wise load splitting by way of [[Dijkstra's algorithm]], without configuration and user intervention. The catalyst for TRILL was an event at [[Beth Israel Deaconess Medical Center]] which began on 13 November 2002.<ref>{{cite web |title=All Systems Down |url=https://community.cisco.com/legacyfs/online/legacy/0/9/8/140890-All%20Systems%20Down%20-%20Scott%20Berinato(CIO).pdf |website=cio.com |publisher=IDG Communications, Inc. |access-date=9 January 2022 |archive-url=https://web.archive.org/web/20200923200221if_/https://community.cisco.com/legacyfs/online/legacy/0/9/8/140890-All%20Systems%20Down%20-%20Scott%20Berinato(CIO).pdf |archive-date=23 September 2020 |url-status=dead}}</ref><ref>{{cite web |title=All Systems Down |url=https://www.computerworld.com/article/2581420/all-systems-down.html |website=cio.com |publisher=IDG Communications, Inc. |access-date=9 January 2022 |archive-url=https://web.archive.org/web/20220109020703/https://www.computerworld.com/article/2581420/all-systems-down.html |archive-date=9 January 2022 |url-status=dead}}</ref>  The concept of Rbridges<ref>{{cite web |title=Rbridges: Transparent Routing |url=https://courses.cs.washington.edu/courses/cse590l/05sp/papers/rbridges.pdf |website=courses.cs.washington.edu |publisher=Radia Perlman, Sun Microsystems Laboratories |access-date=9 January 2022 |archive-url=https://web.archive.org/web/20220109030037/https://courses.cs.washington.edu/courses/cse590l/05sp/papers/rbridges.pdf |archive-date=9 January 2022 |url-status=dead}}</ref> [sic] was first proposed to the [[Institute of Electrical and Electronics Engineers]] in the year 2004,<ref>{{cite web |title=Rbridges: Transparent Routing |url=https://www.researchgate.net/publication/4102976 |website=researchgate.net |publisher=Radia Perlman, Sun Microsystems; Donald Eastlake 3rd, Motorola}}</ref> whom in 2005<ref>{{cite web |title=TRILL Tutorial |url=http://www.postel.org/rbridge/trill-tutorial.pdf |website=postel.org |publisher=Donald E. Eastlake 3rd, Huawei |access-date=2022-01-14 |archive-date=2023-03-29 |archive-url=https://web.archive.org/web/20230329233902/http://www.postel.org/rbridge/trill-tutorial.pdf |url-status=dead }}</ref> rejected what came to be known as TRILL, and in the years 2006 through 2012<ref>{{cite web |title=IEEE 802.1: 802.1aq - Shortest Path Bridging |url=https://ieee802.org/1/pages/802.1aq.html |website=ieee802.org |publisher=Institute of Electrical and Electronics Engineers }}</ref> devised an incompatible variation known as [[Shortest Path Bridging]].

The IEEE approved the [[IEEE 802.1aq]] standard in May 2012,<ref>{{cite web
 |title = IEEE APPROVES NEW IEEE 802.1aq™ SHORTEST PATH BRIDGING STANDARD
 |publisher = IEEE
 |author = Shuang Yu
 |date = 8 May 2012
 |url = http://standards.ieee.org/news/2012/802.1aq.html
 |access-date = 2 June 2012
 |archive-date = 14 May 2013
 |archive-url = https://web.archive.org/web/20130514211405/http://standards.ieee.org/news/2012/802.1aq.html
 |url-status = dead
 }}</ref> also known as Shortest Path Bridging (SPB). SPB allows all links to be active through multiple equal-cost paths, provides faster convergence times to reduce downtime, and simplifies the use of load balancing in [[Network topology#Mesh|mesh network topologies]] (partially connected and/or fully connected) by allowing traffic to load share across all paths of a network.<ref>{{cite web
 |title = Shortest Path Bridging IEEE 802.1aq Overview
 |publisher = Huawei
 |author = Peter Ashwood-Smith
 |date = 24 Feb 2011
 |url = http://meetings.apnic.net/__data/assets/pdf_file/0012/32007/APRICOT_SPB_Overview.pdf
 |access-date = 11 May 2012
 |archive-url = https://web.archive.org/web/20130515115628/http://meetings.apnic.net/__data/assets/pdf_file/0012/32007/APRICOT_SPB_Overview.pdf
 |archive-date = 15 May 2013
 |url-status = dead
 }}</ref><ref>
{{cite web
 |title = Largest Illinois healthcare system uproots Cisco to build $40M private cloud
 |author = Jim Duffy
 |date = 11 May 2012
 |publisher = PC Advisor
 |quote = Shortest Path Bridging will replace Spanning Tree in the Ethernet fabric.
 |url = http://www.pcadvisor.co.uk/news/internet/3357242/largest-illinois-healthcare-system-uproots-cisco-build-40m-private-cloud/
 |access-date = 11 May 2012
 }}</ref> 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.<ref name="IEEE">
{{cite news
 |title = IEEE Approves New IEEE 802.1aq Shortest Path Bridging Standard
 |publisher = Tech Power Up
 |date = 7 May 2012
 |url = http://www.techpowerup.com/165594/IEEE-Approves-New-IEEE-802.1aq-Shortest-Path-Bridging-Standard.html
 |access-date = 11 May 2012
 }}</ref>