The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 20, 2020
Filed:
May. 31, 2019
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Lihua Yuan, Bellevue, WA (US);
Ashok Kumar Nandoori, Sammamish, WA (US);
Pradeepkumar Mani, Issaquah, WA (US);
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
A Top of Rack (TOR) switch operating with a Software for Open Networking in the Cloud (SONiC) platform is implemented using commodity switch hardware and is configured to maintain or retrieve flow state information for incoming data flows in a load balancer. In one embodiment, an application-specific integrated circuit (ASIC) informs a user mode container flow state information for each incoming data flow. The user mode container informs the ASIC of any affected flows that may result pursuant to a modified distributed system (e.g., added, updated, or removed servers). In other embodiments, the ASIC may utilize remote direct memory access (RDMA) to retrieve flow state information maintained by a remote device or may utilize the RDMA to retrieve network address translation (NAT) information for incoming traffic. In each of the implementations, the integrity of the load balancing system is maintained when the distributed system of servers changes.