Method and apparatus for tracing a virtual connection
US6643267B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1999 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Jun 30, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L41/342
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for tracing a virtual circuit. A request message is received from a trace originating node. The request message includes a trace transit list. The trace transit list includes one or more element types in a vendor specific information portion of the trace transit list. At least one of the element types is a node level call processing latency element, a network level call processing latency element, an egress physical port identifier element, an ingress physical port identifier element, an ingress logical port identifier element, or a time stamp element. The one or more element types are added to the vendor specific information portion of the trace transit list. The request message is transmitted toward a trace terminating node. An acknowledge message is received from the trace terminating node. The acknowledge message includes the trace transit list copied from the request message to the acknowledge message by the trace terminating node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.