This infrastructure includes a network MPLS; first and second groups of access points associated with each section of the track; first and second modems, on the train, communicating with access points of the first and second groups. The network includes pairs of local switches, each associated with a section of the track and including first and second local switches for communication with, respectively, the first and second groups of access points of the associated section, and first and second central switches, the switches being in series with one another and implementing a service for defining paths between each central switch and each local switch so the path between the first central switch and the first local switch of a pair and the path between the second central switch and the second local switch of this pair correspond to separate portions of the ring formed by the network.

A method for transparent on-board routing of data packets at high bit rate is implemented by a telecommunication system comprising an origin transmitting station, a first destination receiving station, a second destination receiving station, and a plurality of at least two satellites. The origin transmitting station segments high bit rate data streams into coded or uncoded packets each having the structure of a coded or uncoded DVB-S2 baseband frame BBFRAME; and the origin transmitting station inserts, for each segmented BBFRAME packet, coded or uncoded, an on-board routing label of a single piece respectively associated with the coded or uncoded BBFRAME packet. The on-board routing label contains an identifier of the destination receiving station associated with the coded BBFRAME packet, out of the first destination receiving station and the second destination receiving station.

Techniques for virtual private network (VPN) services over optical networks. Client data is received from a source device connected to a first node in an optical communication network. The client data is for transmission over the optical communication network to a destination device connected to a second node in the optical communication network. The client data is transmitted from the source device to the destination device using a layer 2 (L2) virtual network connection between the source device and the destination device. This includes transmitting the client data from the first node to the second node over an optical transport network (OTN) path through the optical communication network using a frame. The second node is configured to receive the frame and transmit the client data to the destination device based on an identifier in the frame.

The present general inventive concept relates to systems and method for routing electronic messages depending on message content.

This application discloses a client service transmission method and apparatus. The method may include: receiving a client service, where the client service includes a plurality of data blocks, the client service is corresponding to a counter, and the counter is used to control an output rate of the client service; and sending the plurality of data blocks in a plurality of sending periods, where when a count value of the counter reaches a preset threshold in each sending period, at least one data block of the plurality of data blocks is sent. This technology may be applied to a scenario in which a transmission node transmits a client service.

A communication apparatus according to an aspect of the present invention is a communication apparatus that is able to be connected to a different communication apparatus via a network including three or more paths, the communication apparatus including a processing circuitry configured to measure a network state for each of the three or more paths, calculate an evaluation value based on a result of measuring the network state for each of the three or more paths, select at least two paths to be used for communication from among the three or more paths based on the calculated evaluation value, generate a packet for transmission through duplication of an input packet, and transmit the generated packet to the different communication apparatus through the selected paths.

A method for processing data packets in a communication network includes establishing a path for a flow of the data packets through the communication network. At a node along the path having a plurality of aggregated ports, a port is selected from among the plurality to serve as part of the path. A label is chosen responsively to the selected port. The label is attached to the data packets in the flow at a point on the path upstream from the node. Upon receiving the data packets at the node, the data packets are switched through the selected port responsively to the label.

Technologies for managing network traffic through heterogeneous fog network segments of a fog network include a fog node deployed in a fog network segment. The fog node is configured to receive a fog frame that includes control instructions. The fog node is further configured to perform a route selection action to identify a preferred target fog node based on the control instructions, perform action(s) based on the control instructions and network characteristic(s) of the fog network segment relative to corresponding network characteristic(s) of the different fog network segment, and generate updated control instructions based on at least one network characteristic of the different fog network segment. Additionally, the fog node is configured to replace the original control instructions of the received fog frame with the updated control instructions and transmit the received fog frame with the updated control instructions to the preferred target fog node. Other embodiments are described and claimed.

A packet routing method includes computing, for a source node in the data network and a destination node in the data network, a set of multiple routes providing a set of shortest routes from the source to the destination that satisfy all the truth assignments for the Boolean algebra available from the path in the network. The method selects, for a packet flow, a route where logical conjunction of the policy constraints of the flow and the route is satisfied and where the route has sufficient bandwidth.

A method for processing data packets in a communication network includes establishing a path for a flow of the data packets through the communication network. At a node along the path having a plurality of aggregated ports, a port is selected from among the plurality to serve as part of the path. A label is chosen responsively to the selected port. The label is attached to the data packets in the flow at a point on the path upstream from the node. Upon receiving the data packets at the node, the data packets are switched through the selected port responsively to the label.