US 11,876,726 B2
Disabling cut-through frame transfer based on a cycle time period and apparatus for disabling
Bernard Francois St-Denis, Ottawa (CA); and Sathish Vallipuram, Ottawa (CA)
Assigned to NXP B.V., Eindhoven (NL)
Filed by NXP B.V., Eindhoven (NL)
Filed on Mar. 7, 2022, as Appl. No. 17/653,801.
Prior Publication US 2023/0283565 A1, Sep. 7, 2023
Int. Cl. H04L 47/56 (2022.01); H04L 49/25 (2022.01)
CPC H04L 47/56 (2013.01) [H04L 49/251 (2013.01); H04L 49/252 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for performing one of cut-through frame transfer and store-and-forward frame transfer of a frame in a network switch, the method comprising:
receiving the frame at an input port of the network switch;
determining, by a per stream forwarder and policer (PSFP), a time period in a cycle time when the frame is received and a stream identification of the frame, wherein the cycle time comprises a plurality of time periods;
receiving, by a forwarder, the frame from the PSFP which is defined by IEEE 802.Qci based on a stream gate state of the PSFP defined by the stream identification and performing, by the forwarder, one of the cut-through frame transfer and the store-and-forward frame transfer of the frame to a queue of a time gated scheduler which is defined by IEEE 802.Qbv based on the time period in the cycle time when the frame was received and the stream identification, wherein the cut-through frame transfer is always disabled in the last period of the cycle time and store-and-forward frame transfer is performed; and wherein the time gated scheduler provides the frame to a transmitter based on a priority of the frame and a priority gate state of the queue.