Adaptive port routing for power efficient switching

Patent metadata

Field	Value
Publication number	US-2025039097-A1
Application number	US-202318226587-A
Country	US
Kind code	A1
Filing date	Jul 26, 2023
Priority date	Jul 26, 2023
Publication date	Jan 30, 2025
Grant date	—

Abstract

A device, communication system, and method are provided. In one example, a system for routing traffic is described that includes a plurality of ports to facilitate communication over a network. The system also includes a controller to selectively activate or deactivate ports of the system based on queue depths and additional information to improve power efficiency of the system.

First claim

What is claimed is:

1 . A device comprising one or more circuits to:
determine a buffer occupancy of a switch comprising a plurality of ports associated with a destination; determine a queue depth of a first one or more of the plurality of ports; based on the determined buffer occupancy and the queue depth of the first one or more of the plurality of ports, select a number of ports for traffic associated with the destination; and activate or deactivate a second one or more of the plurality of ports associated with the destination based on the selected number of ports.

2 . The device of claim 1 , wherein the selected number of ports is further determined based on historical traffic data between the switch and the destination.

3 . The device of claim 1 , wherein activating or deactivating the second one or more of the plurality of ports comprises updating a routing table based on the selected number of ports.

4 . The device of claim 3 , wherein updating the routing table comprises selecting, based on a priority of each of the plurality of ports associated with the destination, the one or more of the ports to activate or deactivate.

5 . The device of claim 4 , wherein the priority of each port is determined based on a number of destinations with which each of the plurality of ports associated with the destination is associated.

6 . The device of claim 4 , wherein the priority of each port is determined based on a number of fixed flows with which each of the plurality of ports associated with the destination is associated.

7 . The device of claim 1 , wherein the one or more circuits are further to determine a number of active ports among the plurality of ports associated with the destination.

8 . The device of claim 1 , wherein selecting the number of ports for traffic associated with the destination is further based on a number of active ports among the plurality of ports associated with the destination and a total number of the plurality of ports associated with the destination.

9 . The device of claim 1 , wherein the one or more circuits are further to, after activating or deactivating the second one or more of the plurality of ports, determine an updated queue depth for each active port associated with the destination.

10 . The device of claim 9 , wherein the one or more circuits are further to update a routing table based on the updated queue depth.

11 . A system comprising one or more circuits to:
determine a buffer occupancy of a switch comprising a plurality of ports associated with a destination; determine a queue depth of a first one or more of the plurality of ports; based on the determined buffer occupancy and the queue depth of the first one or more of the plurality of ports, select a number of ports for traffic associated with the destination; and activate or deactivate a second one or more of the plurality of ports associated with the destination based on the selected number of ports.

12 . The system of claim 11 , wherein the selected number of ports is further determined based on historical traffic data between the switch and the destination.

13 . The system of claim 11 , wherein activating or deactivating the second one or more of the plurality of ports comprises updating a routing table based on the selected number of ports.

14 . The system of claim 13 , wherein updating the routing table comprises selecting, based on a priority of each of the plurality of ports associated with the destination, the one or more of the ports to activate or deactivate.

15 . The system of claim 14 , wherein the priority of each port is determined based on a number of destinations with which each of the plurality of ports associated with the destination is associated.

16 . The system of claim 14 , wherein the priority of each port is determined based on a number of fixed flows with which each of the plurality of ports associated with the destination is associated.

17 . The system of claim 11 , wherein the one or more circuits are further to determine a number of active ports among the plurality of ports associated with the destination.

18 . The system of claim 11 , wherein selecting the number of ports for traffic associated with the destination is further based on a number of active ports among the plurality of ports associated with the destination and a total number of the plurality of ports associated with the destination.

19 . The system of claim 11 , wherein the one or more circuits are further to, after activating or deactivating the second one or more of the plurality of ports, determine an updated queue depth for each active port associated with the destination.

20 . A switch comprising one or more circuits to:
receive data associated with a destination; determine a buffer occupancy of the switch, wherein the switch comprises a plurality of ports associated with the destination; determine a queue depth of a first one or more of the plurality of ports; based on the determined buffer occupancy and the queue depth of the first one or more of the plurality of ports, select a number of ports for traffic associated with the destination; activate or deactivate a second one or more of the plurality of ports associated with the destination based on the selected number of ports; and after activating or deactivating the second one or more of the plurality of ports associated with the destination, route the data to the destination.

Assignees

• Mellanox Technologies Ltd

Inventors

• Kazimirsky Amit
• Beracha Eran Gil
• Mula Liron
• Kfir Aviv
• Gafni Barak

Classifications

• H04L47/129 Primary

  at the destination endpoint, e.g. reservation of terminal resources or buffer space · CPC title

• H04L47/30 Primary

  in combination with information about buffer occupancy at either end or at transit nodes · CPC title