Method and apparatus for measuring and monitoring the performance within a ring communication network
US5390188A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 2, 1993 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Aug 2, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L43/067
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A performance measurement, communication fault detection, and fault isolation system for a ring based communication network. The present invention includes mechanisms and procedures operable within each port logic device of a communication network for counting the number of message packets lost by the network versus the number of message packets lost by the particular port or it's attached communication station. The result is a generic loss metric for that particular port. Positive counts represent packets lost by the remainder (i.e., not including the particular port) of the network while negative counts represent packets lost by the port or its attached station. The present invention also includes embodiments wherein the above capabilities are provided for a group of ports but only for messages that contain a particular targeted address as the packet's origin (i.e., targeted loss metric). A source address embodiment is provided so that an individual port responds only to messages containing the address of its attached station. If the attached device is a single station then by computing the difference between the generic loss metric and the source address loss metric for a given …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.