Architecture and method having redundancy in active/active stateful devices based on symmetric global load balancing protocol (sGLBP)

An architecture, arrangement, system, and method for or controlling traffic flow into and out of a server farm having active-active stateful devices. A symmetric Gateway Load Balancing Protocol (sGLBP) eliminates asymmetric traffic flow for out-bound traffic. Load distribution for in-bound traffic i...

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Bibliographic Details
Main Authors PORTOLANI MAURIZIO, MONCLUS PERE, GOLSHAN ALI, ARREGOCES MAURICIO
Format Patent
LanguageEnglish
Published 04.05.2006
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
PHYSICS
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:An architecture, arrangement, system, and method for or controlling traffic flow into and out of a server farm having active-active stateful devices. A symmetric Gateway Load Balancing Protocol (sGLBP) eliminates asymmetric traffic flow for out-bound traffic. Load distribution for in-bound traffic is balanced between a redundant pair of aggregation switches using either static host routes, Route Health Injection or in a more general manner, with external routes with a mask longer than the connected subnet advertised by the routing protocol. The return traffic is symmetric because it returns through the same aggregation switch that it came from. Similarly, traffic originating from a server farm exits from one of the redundant aggregation switches and returns from the same aggregation switch.
Bibliography:Application Number: US20050141808