Nicholson De Vos Webster & Elliott LLP
Method and system of session-aware load balancing
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.
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
H H H
H04L H04L H04L
additional inventional additional
Serdar Qiwen
Sahin Zhang