System and method for traversing ATM networks based on forward and reverse virtual connection labels
US5579480A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1995 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | Apr 28, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5652
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a communication network having a set of hosts and switch based label swapping communication nodes, each node has a control processor that is also a host that sends and receives messages via the switching apparatus in its associated node. Each node's control processor also includes a virtual connection (VC) traversal procedure that implements the methodology of the present invention. The control processor of any node along an established connection can initiate the transmission of a VC traversal message to the control processors of all the nodes along the connection. The VC traversal message is transmitted as one or more ATM cells, where each cell includes a standard ATM header for routing the cell to a neighboring node's control processor, as well as a VC traversal header in the body of the cell that identifies the connection being traversed. When a node receives a VC traversal message with a VC traversal header in it, the virtual connection traversal procedure in the receiving node processes that message by (A) performing whatever command is indicated in the VC traversal header, (B) routing a copy of the VC traversal message to the control processor of each node to which a data…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.