The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 2005
Filed:
Nov. 21, 2000
Anis Haq, Mountain View, CA (US);
Lawrence Hui, Sunnyvale, CA (US);
Scott Chew, Redwood City, CA (US);
Unmesh Agarwala, San Jose, CA (US);
Michael Beesley, Hillsborough, CA (US);
Anis Haq, Mountain View, CA (US);
Lawrence Hui, Sunnyvale, CA (US);
Scott Chew, Redwood City, CA (US);
Unmesh Agarwala, San Jose, CA (US);
Michael Beesley, Hillsborough, CA (US);
Juniper Networks, Inc., Sunnyvale, CA (US);
Abstract
A router includes multiple routing engines. If the active routing engine fails, a backup one of the routing engines detects the failure and assumes the role of active routing engine. A redundancy controller circuit, connected to the multiple routing engines, facilitates the selection and switching of the routing engines. Portions of the packet forwarding engine, in addition to the routing engine, may be redundantly implemented. The active routing engine controls the selection of the redundant portion of the packet forwarding engine.