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:
Jun. 19, 2018
Filed:
Sep. 16, 2014
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
Serdar Sahin, Plano, TX (US);
Qiwen Zhang, Plano, TX (US);
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm, SE;
Abstract
Methods implemented in a network device are disclosed for maintaining session integrity through load balancing. The method assigns a same virtual Internet protocol VIPA to the network device and a set of servers. The network device is assigned a set of next hop IP addresses, where each next hop IP address corresponds to a route to a server, and the VIPA of the network device is advertised to outside of the load balancing system. When a packet is a first packet from a source of a communication session and destined to the VIPA, the network device selects a next hop IP address to forward to a server according to its load balancing policy. The selection is saved so that subsequent packets of the same communication session from the same source will be forwarded to the same server.