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
Transfer formulas
Motion-compensated prediction of inter-layer residuals
Safety device and method for electric heating appliances
Voltage regulators with improved wake-up response
Compounds, compositions and methods for reducing lipid levels
Audit planning
Far field telemetry operations between an external device and an implantable medical device during recharge of the implantable medical device via a proximity coupling
  Randomly Featured Patents
Sensorless switched reluctance motor control
Knock-down sheltering lounge with center pivot
Combined hassock, nutcracker and disposal unit
Fuel cell microporous layer including particles with a controlled pore size distribution
Methods and systems to avoid unproductive dispatches
Method for removal of sic
Casing for outdoor communication apparatus and protective device for the same
Handoff control system handoff control method, and storage medium storing handoff control program
Packaging for a semiconductor die
Video camera