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. 19, 2011
Filed:
Feb. 02, 2007
Ramasamy Jesuraj, Westford, MA (US);
Ramasamy Jesuraj, Westford, MA (US);
Avaya, Inc., Basking Ridge, NJ (US);
Abstract
A method and apparatus for learning the identity of VRRP backup router(s) for a VRRP master router enables the identity of VRRP backup routers to be determined quickly on demand, or enables a table of VRRP master and backup routers to be established over time. A VRRP query message type is defined as a type of VRRP message that will enable the routers on the network to be queried to determine which router(s) are VRRP backup routers for a virtual IP address associated with a VRRP master. The VRRP query message may be initiated by the VRRP master, a network management system, or another entity. The VRRP backup routers may respond with a VRRP response message, which is also defined as a type of VRRP message. The VRRP response message may be unicast to the VRRP master or network management system, or broadcast to enable a table of VRRP master/backup routers to be created.