In one embodiment, a tunnel to be affected by configuration of a service in a network is identified and key information for the identified tunnel is obtained from a corresponding router. The tunnel is assigned to a key group based on the key information, and provisioning information associated with the tunnel on the router is updated based on the assigned key group in conjunction with configuration of the service. The updating of the provisioning information may comprise altering the key information on the router to include a key associated with the assigned key group. Also, one or more keys not associated with the assigned key group may be deleted from the router and from a management entity of the network.

The present disclosure relates to a slave device control method, for transmitting a control message along with group start data and group end data to a slave device by a master device so as to set a start point and an end point of the slave device in a sub group, and for allowing the master device to check a network topology using a topology collection message so as to effectively generate a sub group.

Systems and methods for decoupled searching and optimization for one or more data centers, including determining a network topology for one or more networks of interconnected computer systems embedded in the one or more data center, searching for routing candidates based on a network topology determined, and updating and applying one or more objective functions to the routing candidates to determine an optimal routing candidate to satisfy embedding goals based on tenant requests, and to embed the optimal routing candidate in the one or more data centers.

A method is implemented by a network device for improving availability of network component using multi-chassis redundancy by efficiently re-routing data traffic intended for the network component in the event of a link or node failure. The network device is in a set of network devices hosting the network component each network device in the set of network devices having a shared cluster identifier and a separate node identifier. The set of network devices hosting the network component share a virtual internet protocol address.

A control apparatus connected to two or more first relay apparatuses which form a trunk with a first external relay apparatus and to a second relay apparatus(es) which is connected to at least one of the first relay apparatuses and which is arranged between a destination apparatus that performs a point-to-point communication and the first relay apparatuses. The control apparatus includes a first unit controlling the relay apparatuses; a second unit receiving a request for a configuration about a point-to-point communication, the request including endpoint information about the point-to-point communication; and a third unit determining, before the point-to-point communication occurs, a path(s) of the point-to-point communication, based on the endpoint information about the point-to-point communication and a packet allocation rule(s) of the first external relay apparatus, and setting a packet forwarding rule(s) for the point-to-point communication which uses the trunk in the relay apparatuses on the path(s).

A system and method for mapping a network to facilitating configuration is disclosed. Address registration information is appended to an enhanced local management interface message sent between devices in a network of routers and switches. A network management system for an outside network can use that information to map out the network and configure the network as needed. The address registration information includes an Internet Protocol address and an interface index. The interface index includes both slot and port number.

A router policy server may include a policy engine. The policy engine may receive, from a first router, a request for whether to accept or reject routing information received from a second router and determine whether a policy, associated with the second router, allows the second router to advertise the routing information. The policy engine may further instruct the first router to accept the routing information when the policy allows the second router to advertise the routing information and may instruct the first router to reject the routing information when the policy does not allow the second router to advertise the routing information or when no policy exists for the second router in association with the policy engine.

Embodiments of the present invention provide a method, and an apparatus for supporting a non-vector line. The method includes: selecting n non-vector lines T.sub.L from lines that are in an initializing stage, where n is an integer greater than or equal to 1; controlling to perform no further initializing for other lines that are in the initializing stage except the T.sub.L until the T.sub.L fully enters a data transmission stage; and before the T.sub.L enters the data transmission stage, estimating a far-end crosstalk coefficient C.sub.TL-SV from the T.sub.L to a vector line S.sub.V that is in the data transmission stage, where the C.sub.TL-SV is used in signal processing to eliminate far-end crosstalk caused by the T.sub.L to the S.sub.V.

Novel tools and techniques are provided for implementing network management layer configuration management. In some embodiments, a system might determine one or more network devices in a network for implementing a service arising from a service request that originates from a client device over the network. The system might further determine network technology utilized by each of the one or more network devices, and might generate flow domain information (in some cases, in the form of a flow domain network (“FDN”) object), using flow domain analysis, based at least in part on the determined network devices and/or the determined network technology. The system might automatically configure at least one of the network devices to enable performance of the service (which might include, without limitation, service activation, service modification, fault isolation, and/or performance monitoring), based at least in part on the generated flow domain information.

An autonomous network and a corresponding routing method include determining routing paths by a controller, and providing the determined routing paths to a data packet processor located remotely from the controller. The data packet processor routes outgoing data packets, based on information from the controller, through a plurality of switches remotely from the data packet processor. Each switch includes a plurality of network interfaces. For an outgoing data packet, the data packet processor determines a network interface over which to transmit the data packet, and adds an indication of the determined network interface in a header of the data packet. The data packet processor forwards the modified data packet to the switch including the determined network interface. The switch identifies the network interface based on the indication, and transmits the outgoing data packet over the identified network interface.