US 11,706,278 B2Granted

Prioritized MSRP transmissions to reduce traffic interruptions

AssigneeCisco Technology, Inc.

InventorsMichel D. Taillon, Gayathri R

Life of this patent

Estimating the term…

Loading patent…

Abstract

This technology enables prioritization of Multiple Stream Reservation Protocol (“MSRP”) transmissions in Audio Video Bridging (“AVB”) virtual local area networks (“VLANs”). An AVB switch receives a status from listener devices, associates a state with each of the statuses indicating whether each listener device is active or in-active, and stores each state in a database. For each listener device, a queue of MSRP protocol data unit (“PDU”) packets exists to be transmitted to the listener device. The AVB switch searches the database for listener devices with an active state, searches the queue for each active listener device for packets associated with an active state, and transmits the packets associated with the active state to each active listener device. Subsequently, the AVB switch searches each listener device's queue for packets associated with an in-active state and transmits the packets associated with an in-active state to each listener device.

Claims20

Dependent claims

A method performed at least partly by an intermediate device in a network, the method comprising:

identifying a first source device that is configured to transmit a first traffic stream in the network;
identifying a second source device that is configured to transmit a second traffic stream in the network;
determining that the first device has one or more first receiving devices that are subscribed to receive the first traffic stream from the first source device;
determining that the second source device does not have any subscribed receiving devices;
receiving a first advertisement packet from the first source device that advertises first attributes associated with the first traffic stream, wherein the first attributes indicate an availability of the first traffic stream or a third traffic stream associated with the first device;
receiving a second advertisement packet from the second source device that advertises second attributes associated with the second traffic stream, wherein the second attributes indicate an availability of the second traffic stream or a fourth traffic stream associated with the second device;
and
prioritizing transmission of the first advertisement packet over the second advertisement packet based at least in part on the first source device having one or more first receiving devices that are subscribed and the second source device not having any subscribed receiving devices.

5 more elements

An intermediate device in a network, the intermediate device comprising:

one or more processors;
and
one or more non-transitory computer-readable media storing computer-executable instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
identifying a first source device that is configured to transmit a first traffic stream in the network;
identifying a second source device that is configured to transmit a second traffic stream in the network;
determining that the first device has first receiving devices that are subscribed to receive the first traffic stream from the first source device;
determining that the second device has second receiving devices that are subscribed to receive the second traffic stream from the second source device;
determining that a first number of the first receiving devices is greater than a second number of the second receiving devices;
receiving a first advertisement packet from the first source device that advertises first attributes associated with the first traffic stream, wherein the first attributes indicate an availability of the first traffic stream or a third traffic stream associated with the first device;
receiving a second advertisement packet from the second source device that advertises second attributes associated with the second traffic stream, wherein the second attributes indicate an availability of the second traffic stream or a fourth traffic stream associated with the second device;
and
prioritizing transmission of the first advertisement packet over the second advertisement packet based at least in part on the first number of the first receiving devices being greater than the second number of the second receiving devices.

9 more elements

A system comprising:

one or more processors;
and
one or more non-transitory computer-readable media storing computer-executable instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
identifying a first source device that is configured to transmit a first traffic stream in a network;
identifying a second source device that is configured to transmit a second traffic stream in the network;
determining that the first source device has first receiving devices that are subscribed to receive the first traffic stream from the first source device;
determining that the second source device has second receiving devices that are subscribed to receive the second traffic stream from the second source device;
determining that a first number of the first receiving devices is greater than a second number of the second receiving devices;
receiving a first advertisement packet from the first source device that advertises first attributes associated with the first traffic stream, wherein the first attributes indicate an availability of the first traffic stream or a third traffic stream associated with the first device;
receiving a second advertisement packet from the second source device that advertises second attributes associated with the second traffic stream, wherein the second attributes indicate an availability of the second traffic stream or a fourth traffic stream associated with the second device;
and
prioritizing transmission of the first advertisement packet over the second advertisement packet based at least in part on the first number of the first receiving devices being greater than the second number of the second receiving devices.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/678,643Filed 23 Feb 2022 · continuation
Priority: 21 Dec 2020
Published: US 2022/0201062 A123 Jun 2022
Granted: 18 Jul 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04L 65/80
Network arrangements, protocols or services for supporting real-time applications in data packet communication: responding to QoS
H04L 12/4641
Interconnection of networks: virtual LANs, VLANs, e.g. virtual private networks [VPN]
H04L 47/6215
Characterised by scheduling criteria: individual queue per QOS, rate or priority
H04L 47/724
Using reservation actions during connection setup: at intermediate nodes, e.g. resource reservation protocol [RSVP]