74results about How to "Fast failover" patented technology

To provide a computer system capable of fast failover so that a service is stopped only for a brief period of time from a failure in a first site. The computer system includes a primary site for regular operation and a secondary site that operating when the primary site fails. A primary storage and a secondary storage have a synchronization unit to make contents stored in the primary storage and contents stored in the secondary storage identical to each other. A client has a cache for recording address information (e.g. DNS) that gives the client an access to the server from which the service is provided and information that defines a time to live of the address information. A first server has a primary request log processing unit, which instructs the client to shorten the recorded time to live of the address information when communication with the secondary site is detected to be impossible.

A system and method for improving digital communication in a wireless mobile ad-hoc network. More specifically, the system includes one or more portable network devices operable to support the seamless operation of a self-initializing, self-healing, adaptive portable network. The portable network devices implement protocols that provide bandwidth management capabilities for use with radios, routers and other wireless network devices. Each portable network device includes at least one wireless transceiver, a processor and control software. The processor and control software are logically coupled to the wireless transceiver to facilitate digital communication via a plurality of communication channels with other network devices.

The invention relates to an automatic parking system based on a mobile robot trolley. The automatic parking system is mainly and technically characterized by comprising a parking lot, the mobile robot trolley and a parking lot intelligent control system, wherein a plurality of rows of parking spaces, a plurality of lines of parking spaces and mobile robot trolley rotating spaces are arranged on the ground of the parking lot, a non-rail type vehicle guide device is paved on the ground of the parking lot, a vehicle access chamber and a center control chamber are arranged in the parking lot, the parking lot intelligent control system is arranged in the center control chamber and is connected with the mobile robot trolley and the vehicle access chamber, and the mobile robot trolley supports vehicles to be accessed for realizing the vehicle access through being controlled by the parking lot intelligent control system. The automatic parking system has the advantages that the design is reasonable, and the flexible dispatching on the vehicles to be accessed and the flexible vehicle access can be carried out through the mobile robot trolley and the corresponding control system, so the functions of high-density storage, fast response and safe service are realized, and the automatic parking system has the characteristics that the building and maintenance cost is low, the access is convenient, the energy is saved, the environment is protected, and the like.

One embodiment disclosed relates to a method of handling link failures between switches. A failed link is detected at a detecting switch. The detecting switch determines a set of path tags whose paths are affected by the failed link. Subsequently, when packets are received with one of the path tags affected by the failed link, those packets are retagged with a detour path tag associated with a detour path circumventing the failed link. Another embodiment disclosed relates to a packet switch apparatus with link failure handling capability for use in a switching mesh. Another embodiment disclosed relates to a switching mesh including a capability to handle link failures.