Patent ID: 7945534
Filing Date: 2011-05-17
Classification: G06F,Y10S

Abstract:
1. A switch, comprising: a plurality of input ports; a plurality of output ports; and at least one backplane interposed between the input ports and the output ports, wherein said backplane selectively connects input ports and output ports to provide that, in response to new data being written at one of the input ports, a journal entry that is maintained after the new data is written is created to point to a first storage location on storage space coupled to the output ports, the first storage location pointing to old data that corresponds to and is older than the new data, new storage space having a second storage location is allocated and the new data is written to the new storage space at the second storage location, wherein the old data is maintained in the storage space at the first storage location after the new data is written to the new storage space at the second storage location.