Patent · US Active

System and method for link protection using shared SRLG association

US8576708B2 · kind B2 · utility

7Cited by

5References

20Claims

0Family size

Assignee

Cisco Technology, Inc. · US

Inventors

Rakesh Gandhi · Stanley Corners, CA
Eric Osborne · Sutton, US
Prabhu Vaithilingam · Carp, CA
Robert Sawaya · Ottawa, CA
Junaid Israr · Ottawa, CA

Key dates

Filing date	Jun 2, 2011
Grant date	Nov 5, 2013
Priority date	—
Expiry date	Nov 29, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04L41/0663
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

In one embodiment, certain SRLGs associated with members of a bundle are deemed to be “risk-free SRLGs”, i.e., SRLGs whose failure may not substantially impact the capacity of the bundle to carry traffic in a computer network. In a bandwidth unaware embodiment a number of active members of the bundle is identified for each SRLG, and a bandwidth aware embodiment further specifies an available bandwidth capacity for each SRLG to determine risk-free SRLGs. A backup path or tunnel may be established and utilized to protect a communication link as long as the SRLGs shared are deemed to be risk-free SRLGs.

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