Abstract:
Methods and apparatuses for inspecting packets are provided. A primary security system may be configured for processing packets. The primary security system may be operable to maintain flow information for a group of devices to facilitate processing of the packets. A secondary security system may be designated for processing packets upon a failover event. Flow records may be shared from the primary security system with the secondary security system.
Abstract:
In one embodiment, a management device receives one or more fate-sharing reports locally generated by one or more corresponding reporting nodes in a shared-media communication network, the fate-sharing reports indicating a degree of localized fate-sharing between one or more pairs of nodes local to the corresponding reporting nodes. The management device may then determine, globally from aggregating the fate-sharing reports, one or more fate-sharing groups indicating sets of nodes having a global degree of fate-sharing within the communication network. As such, the management device may then advertise the fate-sharing groups within the communication network, wherein nodes of the communication network are configured to select a plurality of next-hops that minimizes fate-sharing between the plurality of next-hops.
Abstract:
An example method of rerouting data involves rerouting a logical circuit from a first set of switches to a second set of switches to communicate data between network devices without breaking the logical circuit. The logical circuit comprises variable communication paths. The second set of switches is to form a route associated with the variable communication paths that is not predefined and that is dynamically defined at a time of automatic rerouting. The example method also involves rerouting the data from the logical circuit to a logical failover circuit in the data network when the logical circuit fails based on a committed information rate having been exceeded. The logical failover circuit comprises an alternative communication path to communicate the data.
Abstract:
Systems and methods for distributing peer-to-peer communications are provided herein. Exemplary methods may include masking identification of two or more client nodes on a communications channel of a peer-to-peer communications network by directing peer-to-peer communications of the two or more client nodes through a proxy node, the proxy node including a disinterested client node relative to the two or more client nodes, the disinterested client node providing network resources to the peer-to-peer communications network.
Abstract:
A connection node is included in a connecting part of a plurality of rings in a ring network. The connection node includes a failure detecting unit, an optical-signal processing unit, an ODU switch, and an optical-signal processing unit. The failure detecting unit detects failure in the connecting part. The optical-signal processing unit receives data transmitted from another node on a ring to which the connection node belongs. Upon detection of the failure, the ODU switch determines whether to pass the data or return the data in reverse direction from the connection node depending on a destination to transfer the received data, and sets a transmission path of the data based on a result of the determination. The optical-signal processing unit transfers the data in accordance with the set transmission path.
Abstract:
A method and system protects switching in a network element. At least one data signal at the client entity is received, wherein the signal flow through server entity via the client entity. A configuring protection group on at least one client entity is served by at least two server entity, wherein the protection group includes at least one work entity and at least one protect entity. A plurality of supplement client entities of client entity is created such that at least one of the supplement client entity flows over one server entity and checking the entities for a fault to raise alarm to their respective controllers. The controller includes at least one server layer protection controller and at least one client layer protection controller.
Abstract:
A system and method for distributed fault detection. In an exemplary method, unplanned application exits and crashes may be detected at a node local level. Further, application hangs may be detected using at least one of a script and a binary at the node local level. Also, node crashes and operating system crashes may be detected using node to node heart-beating.
Abstract:
Systems, devices, software, hardware and networks adapted and arranged for monitoring and correcting faults in networked media player systems that include electronic displays are provided. After detection or notification of a fault in at least one networked media player in a network of at least two, or N, media players operationally connected to electronic displays, the invention provides an alternate source of signal to the affected display. In some preferred embodiments, the invention utilizes at least one additional, or N+1, media player as a backup to substitute for the failed media player. Reconfiguration of the faulted media player by means of the N+1 backup networked media player advantageously increases the reliability and efficiency of ongoing maintenance of digital visual systems operating in commercial and other environments.
Abstract:
Method/system is disclosed for recovering computing capacity and critical applications after a catastrophic failure. The method/system involves distributing the computing capacity over multiple computing clusters, each computing cluster having concurrent access to shared data and software applications of other computing clusters. Sufficient backup computing capacity is reserved on each computing cluster to recover some or all active computing capacity on the other computing clusters. Message traffic throughout the computing clusters is monitored for indications of a catastrophic failure. Upon confirmation of a catastrophic failure at one computing cluster, the workloads of that computing cluster are transferred to the backup computing capacity of the other computing clusters. Software applications that have been designated for recovery are then brought up on the backup computing capacity of the other computing clusters. Such an arrangement allows computing capacity and critical software applications to be quickly recovered after a catastrophic failure.
Abstract:
A method and system are provided for tracking the rerouting of logical circuit data in a data network. A disclosed example method involves updating reroute information in response to a dropped packet associated with a quality of service parameter having been exceeded. Transmitted data is rerouted to at least one logical failover circuit in the data network from at least one failed logical circuit associated with the exceeded quality of service parameter. The at least one logical failover circuit is selected based on a bit rate capability specified to be one of a committed bit rate, a variable bit rate, or an unspecified bit rate.