ROUND TRIP TIME (RTT) MEASUREMENT BASED UPON SEQUENCE NUMBER

摘要

Systems, methods, and computer-readable media are provided for determining a packet's round trip time (RTT) in a network. A system can receive information of a packet sent by a component of the network and further determine an expected acknowledgement (ACK) sequence number associated with the packet based upon received information of the packet. The system can receive information of a subsequent packet received by the component and determine an ACK sequence number and a receiving time of the subsequent packet. In response to determining that the ACK sequence number of the subsequent TCP packet matches the expected ACK sequence number, the system can determine a round trip time (RTT) of the packet based upon the received information of the packet and the received information of the subsequent packet.

主权项

1. A method comprising:
receiving, from a sensor of a plurality of sensors in a network, information of a first packet sent by a component of the network, the plurality of sensors configured to sense information of data packets moving through the network; analyzing the information of the first packet to determine an expected acknowledgement (ACK) sequence number associated with the first packet; receiving information of a following packet received by the component; analyzing the information of the following packet to determine an ACK sequence number of the following packet; determining that the ACK sequence number of the subsequent packet matches the expected ACK sequence number; and determining a round trip time (RTT) of the first packet based upon the information of the first packet and the information of the subsequent packet.