Processing

Please wait...

Settings

Settings

Goto Application

1. US20220069970 - TIME TRANSFER USING PASSIVE TAPPING

Office
United States of America
Application Number 17006234
Application Date 28.08.2020
Publication Number 20220069970
Publication Date 03.03.2022
Publication Kind A1
IPC
H04L 7/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
7Arrangements for synchronising receiver with transmitter
H04L 12/26
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
02Details
26Monitoring arrangements; Testing arrangements
CPC
H04L 43/50
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
43Arrangements for monitoring or testing packet switching networks
50Testing arrangements
H04L 7/0008
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
7Arrangements for synchronising receiver with transmitter
0008Synchronisation information channels, e.g. clock distribution lines
Applicants Arista Networks, Inc.
Inventors David C.A. Snowdon
David J. Mirabito
Title
(EN) TIME TRANSFER USING PASSIVE TAPPING
Abstract
(EN)

Techniques for determining a clock offset between monitoring devices in a network. Such techniques include: obtaining, by a first monitoring device, a first set of network traffic data units sent between a first endpoint and a second endpoint via a first tap on a network link between the first endpoint and second endpoint; obtaining, by a second monitoring device, a second set of network traffic data units sent between the first endpoint and the second endpoint via a second tap on the network link; calculating the clock offset between the first monitoring device and the second monitoring device using the first set of network traffic data units and the second set of network traffic data units; and performing an offset action based on the clock offset.


Related patent documents