Cisco Technology, Inc.

Samsara Inc.

Samsara Networks Inc.

Timothy John Passaro

Justin Joel Delegard

Brian Tuan

Bodecker John DellaMaria

Saleh ElHattab

Sylvie Lee

Sean Kyungmok Bae

Jesse Chen

Jennifer Leung

Angel Manalastas Lim

James Michael Roewe

Grant Allen Marvin

Patrick Douglas Verkaik

Example embodiments described herein therefore relate to an event detection system that comprises a plurality of sensor devices, to perform operations that include: generating sensor data at the plurality of sensor devices; accessing the sensor data generated by the plurality of sensor devices; detecting an event, or precursor to an event, based on the sensor data, wherein the detected event corresponds to an event category; accessing an object model associated with the event type in response to detecting the event, wherein the object model defines a procedure to be applied by the event detection system to the sensor data; and streaming at least a portion of a plurality of data streams generated by the plurality of sensor devices to a server system based on the procedure, wherein the server system may perform further analysis or visualization based on the portion of the plurality of data streams.

Event detection system

A source node can append a unique identifier to an outbound client packet, transmit the outbound client packet to a recipient node via a port, and create a transmission record including: the unique identifier, a time stamp of the outbound client packet, and an identifier for the port. The source node can receive an inbound client packet that is appended with the unique identifier and a delta time indicating an amount of elapsed time between the recipient node receiving the outbound client packet and the recipient node transmitting the inbound client packet. The source node can determine a performance level of a VPN tunnel provided by the port based on the time stamp value of the outbound client packet, the delta time, and a time stamp value of the inbound client packet indicating a time at which the inbound client packet was received by the source node.

Reducing data transmissions in a virtual private network

Various implementations disclosed herein include systems, methods and apparatuses that determine connections between non-external facing ports. In some implementations, a method includes identifying one or more port pair connections between non-external network facing ports associated with respective pairs of compliant devices based on associated uplink metadata, wherein the respective pairs of compliant devices are included in a plurality of compliant devices within a network; determining the respective status of each compliant device associated with a particular one of the one or more port pair connections; and adding link data for a particular one of the one or more port pair connections to topology-link map data based at least on the determined respective status of each compliant device associated with the particular one of the one or more port pair connections, wherein the topology-link map data archives accessible information about the topology of the network based at least on the uplink metadata.

Determining connections of non-external network facing ports

Previously available network management systems fail to adequately enable discovery of a network topology that includes both compliant and non-compliant networking devices. By contrast, and to that end, various implementations disclosed herein include systems, methods and apparatuses that determine whether or not a loop exists within uplink metadata associated with first and second compliant devices, wherein the loop in the uplink metadata is characterized by pointers provided to indicate that the first and second compliant devices operate to send externally addressed traffic to one another contrary to the operation of the first and second compliant devices within a network; and resolve the loop by adding a non-compliant device to topology-link map data associated with the first and second compliant devices in response to determining the existence of the loop, wherein the topology-link map data archives accessible information about the topology of the network based at least on the uplink metadata.

Network topology discovery by resolving loops

Various implementations disclosed herein include systems, methods and apparatuses that determine connections between disconnected partial trees. For example, in some implementations, a method includes obtaining a respective device identifier of a first network device included in a first one of a plurality of partial trees included in a network, wherein each partial tree includes at least one network device, and connectivity from the at least one network device to other partial trees is undefined based on associated uplink metadata; querying a plurality of compliant devices within the plurality of partial trees in order to trace a path traversal of the respective device identifier within the network; and selecting one of the plurality of compliant devices as connecting the first network device to a second one of the plurality of partial trees based at least on query responses provided by the plurality of compliant devices.

Determining connections between disconnected partial trees

Growing community of inventors

Oakland, CA, United States of America

Timothy John Passaro