Patent ID: 7779197
Filing Date: 2010-08-17
Classification: G06F,Y02D

Abstract:
1. A limit address check validation device in a communication packet switching device, the communication packet switching device comprising a switch core and an array of base address registers, each base address register in the array of base address registers comprising a base address, a limit address and a port identifier and the communication packet comprising a target address indicating a port, the limit address check validation device comprising: a data selector circuit to select a limit address associated with a matching base address register in the array of base address registers; and a comparator electrically coupled to the data selector circuit, the comparator to compare the target address of the communication packet to the selected limit address to determine if the target address is a valid address, the comparison performed after the communication packet has been routed to the port identifier of the switch core associated with the matching base address register, and upon comparison, if it is determined that the target address of the communication packet is not a valid address, the comparator to nullify the routing of the communication packet.