Patent ID: 8855127
Filing Date: 2014-10-07
Classification: H04L

Abstract:
1. A method for providing deep packet buffering for an Ethernet switch core comprising at least one policy engine, said method comprising: sending incoming frames to an on-chip buffer and an at least one deep packet buffer, determining a policy for at least one frame of data via the policy engine; and if the at least one frame is destined to a port that is having a bandwidth variance, transferring the at least one frame from the at least one deep packet buffer to an external deep packet buffer; if the at least one frame is destined to a port that is not having a bandwidth variance, discarding the at least one frame from the deep packet buffer and utilizing the on-chip buffer for switch pipeline processing; and if the at least one frame is destined to a plurality of ports, said plurality of ports having a subset which has a bandwidth variance and a subset which does not have a bandwidth variance, transferring the at least one frame from one of said at least one deep packet buffer to an the external packet buffer, retaining the at least one frame in the on-chip buffer, sending a frame to a subset of ports that do not have a bandwidth variance and reclaiming the frame from the on-chip packet buffer.