Patent ID: 7653066
Filing Date: 2010-01-26
Classification: H04J,H04L

Abstract:
1. A method of operating a transport interface for at least one local port associated with a first protocol by which frames are transmitted and received in order, said transport interface providing a mechanism to drop duplicate and/or out of-order frames transported over a synchronous network that generates duplicate frames according to a second protocol, said method comprising: receiving a plurality of first protocol frames in order from said at least one local port for transmission to at least one remote port; encapsulating said plurality first protocol frames in said received order into one or more second protocol frames for transport over said synchronous network from said at least one local port to said at least one remote port; inserting a sequence number with each first protocol frame into said one or more second protocol frames in said order, wherein said sequence number is used as an index for determining duplicate and/or out-of order first protocol frames after transport over said synchronous network, and wherein a drop data strobe is generated for each said determined duplicate and/or out of order first protocol frames; and inserting a control character with said sequence number with each first protocol frame into said one or more second protocol frames, wherein said control character indicates said sequence number is active for a corresponding first protocol frame.