Patent ID: 8811190
Filing Date: 2014-08-19
Classification: H04L,Y02D

Abstract:
1. A method implemented by an maximum transmission unit (MTU) capable end-station in a L2 Ethernet network which has a plurality of end-stations and at least a portion of the end-stations are MTU discovery capable end-stations, the method comprising the steps of: obtaining L2 addresses of the plurality of end-stations; discovering the other MTU discovery capable end-stations; discovering a real MTU size for a Data Link Layer (DLL) connection to each of the other MTU discovery capable end-stations, where the MTU discovery capable end-stations are able to perform the obtaining step and the two discovering steps while the end-stations are able to perform the obtaining step, wherein the step of discovering the real MTU sizes further includes sending Connectivity Fault Management (CFM), loopback messages of varying sizes to each of the other MTU discovery capable end-stations until receive an appropriate response from each of the other MTU discovery capable end-stations to determine the real MTU sizes of the DLL connections to each of the other MTU discovery capable end-stations; and in response to determining the real MTU sizes of the DLL connections to each of the other MTU discovery capable end-stations, storing the real MTU sizes of the DLL connections to each of the other MTU discovery capable end-stations in conjunction with the L2 addresses corresponding to each of the other MTU discovery capable end-stations.