Patent ID: 7715328
Filing Date: 2010-05-11
Classification: H04L

Abstract:
1. A method of mirroring data to a mirrored to port in a plurality of switches comprising: determining, based on a mirroring indicator in the plurality of switches, if mirroring is enabled for a port of the plurality of switches; determining, in at least one of the plurality of switches, if data that is to be mirrored has not been sent to said mirrored to port (MTP); resending, by a resending unit, said data to all of said plurality of switches; adding, by at least one of the plurality of switches, an interstack tag to said data; setting, by a stack count unit, a first field in said interstack tag for keeping track of a stack count; setting, by a mirroring indicator unit, a second field in said interstack tag for indicating if mirroring is enabled; setting, by a passed mirrored to port unit, a third field in said interstack tag for indicating if said MTP has been passed without sending said data to said MTP; and setting, by a sent to mirrored to port unit, a fourth field in said interstack tag for indicating if said data has been sent to said MTP.