Proactive and selective time-stamping of packet headers based on quality of service experience and node location

摘要

In one embodiment, a message is received at a node in a network indicating that the node is classified as a critical node, and requesting the node to proactively time-stamp data packets. Data packets are received from one or more child nodes of the node, and the node selects a data packet of the received data packets to time-stamp. Then, the node proactively inserts a time-stamp in the selected data packet. The time-stamped data packet is sent toward a central management node.

主权项

1. A method, comprising:
receiving, at a node in a network, a first message indicating that the node is classified as a critical node, and requesting the node to proactively time-stamp data packets; receiving data packets from one or more child nodes of the node; selecting a data packet of the received data packets to time-stamp; proactively inserting a time-stamp in the selected data packet; sending the time-stamped data packet toward a central management node; assigning a probability value to a child node of the node that is based on a criticality metric, wherein the selecting of the data packet is based on the assigned probability value; and sending a second message to the child node requesting the child node to proactively time-stamp data packets, wherein
the second message propagates downwardly through the sub-network of the child node, andthe time-stamp is inserted in the selected data packet only when the data packet has not already been time-stamped by another node.