Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method of operating a network










Image Number 9 for United States Patent #7889668.

An Internet Protocol router device (10) for use in a data network comprising a plurality of nodes (10, 20, 30), wherein packets of data are sent from one node in the network to another on a hop by hop basis. The router includes: a data store (14) for storing a routing table indicating the next hop destination for a received packet on the basis of the ultimate destination specified by the received packet; a digital processor (13) operable to maintain the routing table on the basis of communications received from neighboring router devices (20, 30) within the network; and a timer (15) for timing the length of time elapsed since last receiving a communication, or a communication of a type which is one of a subset of the possible types of communication, from each of one or more of the router device's neighbors; wherein the data store (14) is further operable to store in respect of each of said one or more of the router device's neighbors a router dead interval; and the digital processor (13) is further operable to compare said length of time elapsed with the corresponding router dead interval in respect of each of said one or more of the router device's neighbors and to ascertain that the corresponding router device is no longer operating correctly if the comparison indicates that a length of time equal to or greater than the router dead interval has elapsed without receiving a said communication, or a said communication of a type which is one of a subset of the possible types of communication, from said neighboring router device; the router device being characterised in that the digital processor (13) is further operable to dynamically vary the or each router dead interval in accordance with one or more properties of the network.








 
 
  Recently Added Patents
Flat display panel and method for forming the same
System and method for seamlessly increasing download throughput
Pet burial pod
System for purifying air through germicidal irradiation and method of manufacture
Semiconductor memory device, method of controlling read preamble signal thereof, and data transmission method
Disk drive to enable defect margining
Methods of producing the membranes and the uses of membranes as battery separator films
  Randomly Featured Patents
Photosensitive recording medium capable of image contrast adjustment, and image transfer system operable with the same
Aqueous polytetrafluoroethylene dispersion composition and process for its production
Shared multi-lambda source for WDM PON
Transmission mechanism of electric nailing gun
Electronic device for taking the speed of a rotating member
Communications connector with improved contacts
Composition and method for reducing hangover
Variable beam float connection assemblies for trimarans
Method for eliminating polycide voids through nitrogen implantation
Magnetic recording medium, method of manufacture therefor, and magnetic read/write apparatus