US 12,615,216 B2Granted

Coalescing public internet packets into jumbo frames between SD-WAN provider network services

AssigneeCisco Technology, Inc.

InventorsArthur de Kerhor, Jerome Tollet, Nathan Roland Maryan Skrzypczak, Aloÿs Christophe Augustin, Mohammed Hawari

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Abstract

The systems and methods disclosed herein provide for coalescing data packets into jumbo frames in order to maximize the throughputs inside the service provider Local Area Network (LAN), thereby increasing the amount of traffic forwarded between internal services. The systems and methods outlined herein enable a source service on a LAN to receive a plurality of data packets from a public cloud-based network (e.g., the Internet) having a packet size limit less than the MTU limit of the LAN, and coalesce the plurality of data packets into a jumbo frame having a size based on the MTU limit of the LAN. The jumbo frame is then transmitted over the LAN to a destination service on the LAN. The destination service then separates the jumbo frame back into the plurality of data packets for further transmission back to the public cloud-based network.

Claims20

Dependent claims

A method comprising:

receiving, by a source service on a Local Area Network (LAN), a plurality of data packets, each data packet having a packet size limit less than a maximum transmission unit (MTU) limit of the LAN;
coalescing, by the source service, the plurality of data packets into a jumbo frame, the jumbo frame having a size greater than the packet size limit of the plurality of data packets, wherein the coalescing the plurality of data packets into the jumbo frame includes allocating a fixed size for slots to contain respective packets of the plurality of the data packets within the jumbo frame, and wherein the coalescing further includes computing a size difference for each respective slot based on a comparison of a size of each respective packet allocated to the respective slot and the fixed size of the respective slot, and filling the size difference with padding having a size equal to the size difference;
transmitting, over the LAN, the jumbo frame from the source service to a destination service on the LAN;
and
separating, at the destination service, the jumbo frame into buffers configured to receive the plurality of data packets having the fixed size.

2 more elements

A system, comprising:

one or more processors in communication with one or more memories, the one or more memories including instructions executable by the one or more processors to:
receive, by a source service, a plurality of data packets, each data packet having a packet size limit less than a maximum transmission unit (MTU) limit of a Local Area Network (LAN);
coalesce, by the source service, the plurality of data packets into a jumbo frame, the jumbo frame having a size greater than the packet size limit of the plurality of data packets, wherein the coalescing the plurality of data packets into the jumbo frame includes allocating a fixed size for slots to contain respective packets of the plurality of the data packets within the jumbo frame, and wherein the coalescing further includes computing a size difference for each respective slot based on a comparison of a size of each respective packet allocated to the respective slot and the fixed size of the respective slot, and filling the size difference with padding having a size equal to the size difference;
transmit, over the LAN, the jumbo frame from the source service to a destination service on the LAN;
and
separate, at the destination service, the jumbo frame into buffers configured to receive the plurality of data packets having the fixed size.

3 more elements

A tangible, non-transitory, computer-readable medium having instructions encoded thereon, the instructions, when executed by a processor, are operable to:

receive, by a source service on a Local Area Network (LAN), a plurality of data packets, each data packet having packet size limit less than a maximum transmission unit (MTU) limit of the LAN;
coalesce, by the source service, the plurality of data packets into a jumbo frame, the jumbo frame having a size greater than the packet size limit of the plurality of data packets, wherein the coalescing the plurality of data packets into the jumbo frame includes allocating a fixed size for slots to contain respective packets of the plurality of the data packets within the jumbo frame, and wherein the coalescing further includes computing a size difference for each respective slot based on a comparison of a size of each respective packet allocated to the respective slot and the fixed size of the respective slot, and filling the size difference with padding having a size equal to the size difference;
transmit, over the LAN, the jumbo frame from the source service to a destination service on the LAN;
and
separate, at the destination service, the jumbo frame into buffers configured to receive the plurality of data packets having the fixed size.

2 more elements

Dependencies are inferred from the claim text.