Patent ID: 7983278
Filing Date: 2011-07-19
Classification: H04L

Abstract:
1. A method for redirect checking in a network device, the method comprising: receiving a data packet, from a station located in a subnet, on a first one of a plurality of interfaces; generating forwarding information identifying a next hop for the data packet; determining whether the first one of the plurality of interfaces, on which the data packet was received, is the same as an interface, of the plurality of interfaces, on which the data packet is to be forwarded to on the next hop; forwarding the data packet to the next hop based on the determining; determining whether the data packet was forwarded via the first one of the plurality of interfaces; determining whether the station, originating the data packet, belongs to a same subnet as the next hop, based on a hash value representing the subnet of the next hop; generating a redirect message when the data packet is received and forwarded via the first one, of the plurality of interfaces, and the station, originating the data packet, belongs to the same subnet as the next hop; and transmitting the generated redirect message to the station originating the data packet.