Abstract: We describe an active node, which receives an active message containing an active application identifier, transmits the active application identifier to an active applications server. receives associated code from the active applications server, and executes the associated code. The active node also may transmit to the active applications server information relating to its own environment, and information relating to whether it is an edge node or core node in the network, enabling the active applications server to determine the associated code to return to the active node.

Abstract: A method is dedicated to managing interworking between a WLAN network and a mobile network both connected to a core network comprising at least two GGSN nodes (G1, G2) connected to respective service networks, an SGSN node (NS) connected to the mobile network and to the GGSN nodes, and at least two tunnel termination gateways (T1, T2) connected to the WLAN network and to the GGSN nodes.

Abstract: A routing information management device for a router of a communication network comprises a first routing information base fed with routing information contained in routing protocol messages, a second forwarding information base having a maximum number of entries, and management means that compare at selected times the number of entries in the first routing information base relating to sending to a selected threshold less than or equal to the maximum number of entries in the second forwarding information base so as to feed the second forwarding information base with routing information selected as a function of the result of the comparison.

Abstract: The request for the response from the sender to the receiver is dynamically routed via a first route traversing the network nodes. Addresses of the traversed network nodes are recorded in an order of traversing in the request. A second route is determined based on the recorded addresses of the nodes. A supplemental packet is generated. The supplemental packet is transmitted to the sender of the request via the determined second route, from a node address to a node address. The response is dynamically routed to the sender of the request by reversely traversing the first route.

Abstract: This invention concerns a method of managing a telecommunication network (232), referred to as the provider network (232), used to transmit data between at least two telecommunication client networks (204, 222) in order to create a virtual private network (200) between the client networks (204, 222), each of these client networks (204, 222) using an internal communication protocol, referred to as the internal client protocol, and each of the client networks (204, 222) having at least one client interconnection device (206, 220, 221) communicating with at least one provider interconnection device (208, 215) of the provider network (232). According to this invention, the provider network (232) uses a communication protocol, referred to as the provider protocol, comprising extensions for the storage of information relating to the points of passage of the data in the client networks (204, 222).

Abstract: A distributed, multistage agent for monitoring, diagnosis and maintenance of network devices comprises an input/output interface for receiving input monitoring and diagnostic data relevant to operation of a first neighboring agent and transmitting output monitoring and diagnostic data relevant to operation of the host network device to a second neighboring agent. An agent process analyzes the input data and generates processed data characterizing operation of the host network device, using a local database which stores expected performance data on operation of said network device. The processed data is correlated with the expected data any error is signaled to the network operator. The agents may be designed as a multiple stage process, the stages being triggered by the data output by an earlier stage only when needed.

Abstract: The invention relates to an inter-domain router (R), for an Internet Protocol (IP) communications network, comprising: (i) processing means (MT) for generating as a function of routing data outgoing messages intended for other routers which comprise information data representative of routes for routing IP datagrams and (ii) control means (MC) for analyzing at least some of the routing data, in order to define route aggregates as a function of selected configuration information, and for delivering output data representative of the route aggregates, so that the processing means (MT) can generate outgoing messages comprising information data representative of said route aggregates.

Abstract: A method is dedicated to call transfer between first and second WLAN using a wireless access technology and respective first and second secure gateways connected to a core network of a network offering packet-switched services.

Abstract: The present invention relates to a method of setting up a call matching a predetermined set of requested services and/or characteristics over a network, optionally a network that is composite and multi-component. The method is characterized in that it consists in subdividing said network into a plurality of domains, with a negotiator unit being associated with each domain, in sending to at least one negotiator unit a call setup request together with a set of parameters defining the services and/or characteristics associated with the call to be set up, and, where appropriate, in setting up the call after determining the appropriate available resources in the various domains concerned and selecting resources providing the best possible match with said set of services and/or characteristics.

Abstract: An Internet Protocol communication network (N) comprises communication equipments (Tj, Sk) certain of which offer at least one service. Certain of the equipments (Tj) comprise management means (MG) which, when they receive a coded address containing address data representing the address of a service equipment (Sk) that offers a service and belongs to a portion of the network (N) that has no service selection means and service data representing the offered service, store the received address data in a memory (M) in corresponding relationship to the service data conjointly received. Accordingly, if one of the communication equipments (Tj) wishes to access a selected service, its management means (MG) determine in its memory (M) the address data representing the address of the service equipment (Sk) that offers the selected service, in order to set up a connection therewith.

Abstract: A device (D) installed in a source communication terminal (T1) of a packet-switched communication network (N) using a connectionless protocol is dedicated to processing addresses of destination communication terminals (T2). This device (D) comprises processing means (MT) responsible, when their source terminal (T1) must transmit a data packet to a destination terminal (T2) designated by an address containing information data representing at least one characteristic of its communication interface, to determine that information data and then adapt the communication parameters of their source terminal (T1) as a function of the information data that has been determined.

Abstract: The invention concerns a method for operating a packet communication network node, in particular an IP router, comprising the following steps: a) reception by the node of a packet (10) from the network; b) reception by the node of an information (13) independent of the protocols of the OSI layers 5 through 7 even of the OSI layers 4 through 7 of the packet and concerning at least one of the following characteristics: the type of data transported in the packet, the transmission source of the data transported in the packet other than the network address of the transmission source of the packet, and the recipient of the data transported in the packet other than the network address of the transmission source of the packet; c) processing by the node of the packet (10) on the basis of said description. It is advantageous that said information is contained in the packet itself.

Abstract: A method of tracing a route between an origin node and a target node within a TCP/IP data network, consisting of sending in a dichotomy-based fashion a succession of messages for tracing the route. The advantage of this method is that it reduces the number of messages necessary for tracing the route.

Abstract: The invention relates to a controlled telecommunications network and a signaling method for use in a network of that kind, which comprises active nodes (11) and signaling control units (3, 4). The method comprises the steps of reception by a signaling unit of a virtual circuit request (5) from a client terminal (1), setting up that circuit between the client terminal (1) and a server terminal (2), and negotiation between the terminals (1, 2) and the signaling control units (3, 4) of the characteristics to be assigned to a data stream (10) that has to cross the network. The following steps are then added: determination of the appropriate active codes, decision on a strategy for deployment of the active codes by the signaling control units, and then deployment (8) of the active codes among the active nodes (11) of the network from one or more signaling units (3, 4).

Abstract: A system is dedicated to controlling interruption of the operation of a router of an Internet protocol communication network. The system comprises observation means which, in the event of reception of an instruction to observe IP datagrams in transit received by the router, deliver an alert signal in case of absence of detection of IP datagrams during a first selected time period. It further comprises control means which, if it is required to interrupt the operation of the router, instruct processing means to generate outgoing warning messages to other routers reporting the withdrawal of routes for routing of IP datagrams by the router, instruct the observation means to commence an observation, and authorize interruption of the operation of the router in the event of reception of an alert signal from the observation means.

Abstract: A device for processing routing protocol messages for a router of an Internet protocol communication network comprises a processor that determines if routing information contained in a routing protocol message to be sent to at least one destination peer router has been checked at least once by at least one routing checking tool, and the result of each check. It adds to the routing protocol message status information representing at least the result of each check effected on the message, with a view to sending it to the destination peer router.

Abstract: A routing information management device for a router of a communication network comprises a first routing information base fed with routing information contained in routing protocol messages, a second forwarding information base having a maximum number of entries, and management means that compare at selected times the number of entries in the first routing information base relating to sending to a selected threshold less than or equal to the maximum number of entries in the second forwarding information base so as to feed the second forwarding information base with routing information selected as a function of the result of the comparison.

Abstract: A distributed, multistage agent for monitoring, diagnosis and maintenance of network devices comprises an input/output interface for receiving input monitoring and diagnostic data relevant to operation of a first neighboring agent and transmitting output monitoring and diagnostic data relevant to operation of the host network device to a second neighboring agent. An agent process analyzes the input data and generates processed data characterizing operation of the host network device, using a local database which stores expected performance data on operation of said network device. The processed data is correlated with the expected data any error is signaled to the network operator. The agents may be designed as a multiple stage process, the stages being triggered by the data output by an earlier stage only when needed.

Abstract: There is disclosed a method of transmitting data packets in a telecommunication network made up of nodes for dynamically routing successive packets sent by a sender to a receiver so that the packets may be routed along different routes and using a protocol such that a receiver receiving a request transmits a response to the sender of the request. At one or more nodes of the network the response is routed dynamically to the sender and a supplemental packet is generated that is sent to the sender of the request and whose route is predetermined.

Abstract: Known telecommunication systems comprising a network with fixed stations and comprising mobile stations for sending identification codes to said network via fixed stations and for allowing mobile communication to subscribers using said mobile phones, with said network comprising a database for storing subscriber-information, can offer more services by storing in said database subscriber-information related to identification codes for allowing subscriber-information to be exposed to further subscribers, with update codes being used for updating said subscriber-information. Preferably, said update codes define the amending of subscriber-information already stored or the storing of new subscriber-information, and an analyser is used for analysing subscriber-information and in dependence transmitting messages. Further, purpose codes are used to define which parts of said subscriber-information is to be analysed and/or to be amended and/or to be exposed, and location codes are introduced to introduce borderlines.