Abstract: A method providing service continuity of a telecommunication network, wherein a first node of the network receives a service request sent by a client computer to a first service server providing the service, the first service server accessing the network by the first node, the method including: storing a local copy of data packets related to the received service request; starting a server state verification procedure to check an operative state of the first service server; and transmitting the data packets to a second service server if the server state verification procedure detects a failure in the operative state of the first service server, the second service server being configured to act as a backup server for the service to be provided.

Abstract: A control system managing data flows between a sender data processor and a recipient data processor. The data flows originate at the recipient data processor and pass through at least one telecommunications network gateway.

Abstract: A method providing service continuity of a telecommunication network, wherein a first node of the network receives a service request sent by a client computer to a first service server providing the service, the first service server accessing the network by the first node, the method including: storing a local copy of data packets related to the received service request; starting a server state verification procedure to check an operative state of the first service server; and transmitting the data packets to a second service server if the server state verification procedure detects a failure in the operative state of the first service server, the second service server being configured to act as a backup server for the service to be provided.

Abstract: A method of providing access of a mobile terminal to an IP network includes establishing a security association between the mobile terminal and a first security gateway of a first router in said plurality of routers. The mobile terminal is provided access to the IP network via the first router, and the data exchanged between the mobile terminal and the first router is encapsulated by using the security association. The security association is made available to at least one second router having a second security gateway. The mobile terminal is provided access to the IP network via said the second router, and data exchanged between the mobile terminal and the second router is encapsulated by using the same security association. Establishing the security association includes assigning a Security Parameter Index that identifies univocally the first security gateway and the security association.

Abstract: A method for enabling sharing of content files among nodes of a P2P network is provided. The P2P network comprises sub-networks each including a respective plurality of nodes capable of storing content files. Each sub-network has an associated corresponding hash table for indexing the content files stored in the nodes of the sub-network. The hash table is distributed among at least some of the nodes of the sub-network. The method comprises, for each content file stored in at least one node of a sub-network, storing in the hash table associated with the sub-network a criticality index providing an indication of the degree of sharing of the content file among the nodes of the sub-network. The method causes a node to cache at least one content file for sharing with other nodes of the sub-network based on the criticality index of the at least one content file.

Abstract: A control system managing data flows between a sender data processor and a recipient data processor. The data flows originate at the recipient data processor and pass through at least one telecommunications network gateway.

Abstract: A method of profiling communication traffic of users in a data network, comprising: monitoring communication traffic originated by a user of a communication terminal; and assigning to the user of the communication terminal a unique and anonymous user traffic identifier, wherein the user traffic identifier is related to a user address assigned to the communication terminal in the data network. Also, the user traffic identifier is adapted to be included in the communication traffic with respect to that user.

Abstract: A method for enabling sharing of content files among nodes of a P2P network is provided. The P2P network comprises sub-networks each including a respective plurality of nodes capable of storing content files. Each sub-network has an associated corresponding hash table for indexing content files stored in the nodes. The hash table is distributed among at least some of the nodes of the sub-network. For each content file stored in at least one node, the hash table comprises a corresponding node list of the sub-network nodes which store the content file. The method comprises associating each node of the sub-network listed in the node list corresponding to a content file with localization data indicating the localization of the node within the sub-network. The localization data defines a corresponding preferential list of the nodes storing the content file for downloading the content file by a requesting node.

Abstract: A system for providing, to users of data communication services, access to a communication network providing these services includes an edge node as well as a packet network, such as an Ethernet connecting the users to the edge node. The packet network is equipped with operation and maintenance procedures for preserving edge connectivity over the packet network. The edge node is associated with a backup edge node, which also provides access to the communication network. Preferably, the backup edge node has the same address as the edge node such that, in the presence of failure of the edge node, seamless connection is established between the users and the backup edge node by applying the operation and maintenance procedures.

Abstract: A method for managing multicast delivery of data packets in communication networks includes the steps of checking join requests coming from hosts to be a part of a multicast group to determine a delivery policy associated with that host and for the requested group and associating hosts with a multicast group according to their delivery policy.

Abstract: A method for enabling sharing of content files among nodes of a P2P network is provided. The P2P network comprises sub-networks each including a respective plurality of nodes capable of storing content files. Each sub-network has an associated corresponding hash table for indexing content files stored in the nodes. The hash table is distributed among at least some of the nodes of the sub-network. For each content file stored in at least one node, the hash table comprises a corresponding node list of the sub-network nodes which store the content file. The method comprises associating each node of the sub-network listed in the node list corresponding to a content file with localization data indicating the localization of the node within the sub-network. The localization data defines a corresponding preferential list of the nodes storing the content file for downloading the content file by a requesting node.

Abstract: A method for enabling sharing of content files among nodes of a P2P network is provided. The P2P network comprises sub-networks each including a respective plurality of nodes capable of storing content files. Each sub-network has an associated corresponding hash table for indexing the content files stored in the nodes of the sub-network. The hash table is distributed among at least some of the nodes of the sub-network. The method comprises, for each content file stored in at least one node of a sub-network, storing in the hash table associated with the sub-network a criticality index providing an indication of the degree of sharing of the content file among the nodes of the sub-network. The method causes a node to cache at least one content file for sharing with other nodes of the sub-network based on the criticality index of the at least one content file.

Abstract: A method of profiling communication traffic of users in a data network, comprising: monitoring communication traffic originated by a user of a communication terminal; and assigning to the user of the communication terminal a unique and anonymous user traffic identifier, wherein the user traffic identifier is related to a user address assigned to the communication terminal in the data network. Also, the user traffic identifier is adapted to be included in the communication traffic with respect to that user.

Abstract: A system for the time-based accounting of access by users to services provided by a data network includes a primary access node to provide access by users by establishing via the primary access node a steady connectivity between the users and the network. A secondary access node is associated with the primary access node, such secondary access node being configured for acting as a backup node to maintain connectivity in the case of failure involving the primary access node. The primary access node is configured for issuing a request for credentials for any user requesting access to said data network and, as a result of receiving valid credentials from the user, starts time-based accounting for the user. An authentication node cooperative with the primary access node and the secondary access node stores the secondary access node information items concerning the time-based accounting started for the user.

Abstract: A method of providing access of a mobile terminal to an IP network includes establishing a security association between the mobile terminal and a first security gateway of a first router in said plurality of routers. The mobile terminal is provided access to the IP network via the first router, and the data exchanged between the mobile terminal and the first router is encapsulated by using the security association. The security association is made available to at least one second router having a second security gateway. The mobile terminal is provided access to the IP network via said the second router, and data exchanged between the mobile terminal and the second router is encapsulated by using the same security association. Establishing the security association includes assigning a Security Parameter Index that identifies univocally the first security gateway and the security association.

Abstract: A system for providing to users of data communication services access to a communication network providing these services, includes an edge node of the communication network providing these services as well as a packet network, such as, an ethernet connecting the users to the edge node. The packet network is equipped with operation and maintenance procedures for preserving edge connectivity over the packet network. The edge node has associated therewith a backup edge node providing access to the communication network. Preferably, the backup edge node is reachable by the users via the packet network by using an address common to the edge node and the backup edge node associated therewith. In the presence of failure of the edge node, connection is established between the users and the backup edge node by applying the operation and maintenance procedures. Preferably, this, occurs by using the address common to the edge node and the associated backup edge node.

Abstract: A system for the time-based accounting of access by users to services provided by a data network includes a primary access node to provide access by users by establishing via the primary access node a steady connectivity between the users and the network. A secondary access node is associated with the primary access node, such secondary access node being configured for acting as a backup node to maintain connectivity in the case of failure involving the primary access node. The primary access node is configured for issuing a request for credentials for any user requesting access to said data network and, as a result of receiving valid credentials from the user, starts time-based accounting for the user. An authentication node cooperative with the primary access node and the secondary access node stores the secondary access node information items concerning the time-based accounting started for the user.