One or more techniques and/or systems are provided for network isolation. For example, nodes within a mesh of devices may be configured with routing rules, main routing tables, and alternative routing tables, such as at a layer-3 network layer. The routing rules may specify that packets received from downstream are to be routed upstream to either a gateway or a backhaul device for evaluation as to whether such packets are allowed to be communicated back downstream to destination recipients using main routing tables. An isolation rule may be configured to specify whether to block or allow packets. In an example, the gateway may either block or allow packets based upon whether a source and destination are within a same virtual local area network or are within different virtual local area networks. In this way, selective device isolation may be provided, such as at the layer-3 network layer.

An information handling system is provided that uses an overlay network controller to improve fault tolerance and minimize downtime in a solicited system. The network controller may determine standby paths for the solicited communications path and reroute communications to one of the standby paths when a fault is detected in the communications path.

A route selection system includes a hub controller in communication with multiple network hubs of a first network domain in which each of the hubs are in communication with a corresponding multiple routers of a second network domain. The hub controller is executed to obtain at least one performance measurement associated with a route terminating at the network hub, generate a border gateway protocol (BGP) advertisement with a preference value that is proportional to the received performance measurement, and transmit the generated advertisement to the network hub, the network hub forwarding the advertisement to the router configured in the other network domain. Upon receipt of the advertisements, the second network domain selects one of the routers for processing the route through the second network domain according to the performance measurement included in the advertisement.

Embodiments of the disclosure relate to a front-haul communications system for enabling communication service continuity in a wireless distribution system (WDS) network. A WDS network includes a front-haul communications system and a plurality of remote WDSs. In this regard, a front-haul link control circuit is provided in the front-haul communications system to detect failed front-haul communication link(s). In response to detecting the failed front-haul communication link(s), the front-haul link control circuit reroutes a disrupted communication service(s) to operational front-haul communication link(s) based on bandwidth capacity requirements of the disrupted communication service(s) and unused bandwidth capacity of the operational front-haul communication link(s). By detecting the failed front-haul communication link(s) and rerouting the disrupted communication service(s) communicated on the failed front-haul communication link(s), it is possible to enable communication service continuity in the WDS network, thus enhancing efficiency and performance of the WDS network.

Routing packets by a router involves establishing a first flow configured for forwarding the packets from a first ingress interface to a first egress interface of the router; determining a condition to modify the first flow; deactivating the first flow; establishing a second flow configured for forwarding the packets from at least one of (1) the first ingress interface to a second egress interface, (2) a second ingress interface to the first egress interface, or (3) a second ingress interface to a second egress interface; and activating the second flow.

A method, apparatus, and computer-readable storage medium are disclosed for processing shared risk group (SRG) information in communications networks. The method includes processing, at a first network layer, first network information comprising a plurality of SRG identifiers. The processing includes producing second network information comprising a smaller number of SRG identifiers than that of the plurality of SRG identifiers. The method further includes sending at least a portion of the second network information to the second network layer. The apparatus includes a network interface adapted to send network information comprising SRG information, a processor coupled to the network interface, and a memory coupled to the processor and adapted to store program instructions operable when executed to carry out steps of the method. The storage medium is configured to store program instructions that when executed are configured to cause a processor to carry out steps of the method.

A method and apparatus for analyzing IP data flows for the determination of an alternate routing path for network traffic between a known first network and a destination within an unknown second network on the Internet. An initial path between the first network and the destination exists. The IP address of the destination is determined and looked up in an Internet database. An alternative route to the destination is determined based on information from the Internet database in order to avoid an interconnecting transit network.

Graceful restart in routers having redundant routing facilities may be accomplished by replicating network (state/topology) information.

Embodiments of the present application disclose a point-to-multipoint service transmission method and apparatus. The first node is connected to the second node by using a first additional path, and the first additional path and a second path constitute a first protection path. The second node is connected to the first node by using a second additional path, and the second additional path and a first path constitute a second protection path. The method may include: when the first node is in an active state and the second node is in a standby state, receiving, by the first node by using the first protection path if the first path is faulty, service data sent by the root node; and forwarding, by the first node, the service data to the multiple leaf nodes.

The invention relates to a method, by a diameter routing unit (110), to route diameter commands of a data packet session using a diameter protocol in a mobile communications network, the diameter routing unit comprising a storage unit (111) storing information which policy and charging control unit is handling which data packet session and storing information about a presence of at least one additional diameter routing unit (100) which routes diameter commands of the diameter protocol to the same pool of policy and charging control units (31, 32) as the diameter routing unit. The method comprises the steps of receiving a diameter command for a data packet session; checking whether information is present in the storage unit (111) which policy and charging control unit is handling the session to which the received diameter command belongs, wherein, if information is present in the storage unit (111), the received diameter command is forwarded to one of the policy and charging control units (31, 32) in accordance with the stored information, wherein, if no information can be found in the storage unit (101) for the received diameter command, the diameter command is forwarded to the at least one additional diameter routing unit.