Passive network latency monitoring
US8958327B2 · kind B2 · utility
8Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2012 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | Jan 19, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/121
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method measures a resident delay for each port in a node in a network and a peer delay between each pair of neighbor nodes in the network. From these resident delays and peer delays, latency between each pair of neighbor nodes in the network is determined. The method includes weighting a route for a data packet going through the nodes in the network using the determined latencies. Each node includes a switch having switchable connections and is configured by a controller to send probe packets from an output port to a port in a neighbor node. The packet may include a time stamp and an identifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.