Patent · US Expired

Layer 3 routing in self-healing networks

US6490244B1 · kind B1 · utility

12Cited by

5References

26Claims

0Family size

Assignee

Nortel Networks Limited · CA

Inventors

Scott Pegrum · Ottawa, CA
Matthew Ming Fai Yuen · Ottawa, CA
Alicja Celer · Ottawa, CA

Key dates

Filing date	Mar 9, 2000
Grant date	Dec 3, 2002
Priority date	—
Expiry date	Mar 9, 2020

Classification

Technology area (CPC H)Electricity
CPC primaryH04L69/325
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Upper layer 3 routing in conjunction with self-healing lower layer networks is more informed by the addition of reachability costs determined in the lower layer. Maintenance changes on the self-healing network are monitored. A change causes revision of reachability costs. The revised costs are communicated by lower layer logic to upper layer logic.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.