International Business Machines Corporation

Cisco Technology, Inc.

At&t Intellectual Property I, L.p.

At+t Corp.

Worcester Technologies LLC

Claude R Galand

Aline Fichou

Jean-Francois Le Pennec

Gerald Lebizay

Jacques Fieschi

Michele Rosso

Laurent Nicolas

Jean E Menez

Maurice Duault

Victor Spagnol

Olivier Bertin

Jean-Marie Sommerlatt

Joel Balissat

Didier F Giroir

Olivier Maurel

Pierre-Andre Foriel

Marcel Villaflor

Bernard Y Pucci

Jean-François Le Pennec

Robert Vermot-Gauchy

Claude Basso

Jean L Calvignac

Gerard Richter

Jean-Marc Berthaud

Guy Platel

Daniel J Esteban

Daniel Mauduit

Emmanuel Lancon

Jean-Fran&ccedil;ois Le Pennec

Paul Raymond Callens

Gerard Brun

Yves Ouvry

Jean-Paul Beraud

Fabrice Jean Verplanken

Edward Stanely Suffern

Ilias Iliadis

Jean-Marie L Munier

Gerald Arnold Marin

Andre E Desblache

Denis Chevalier

Philippe Pierre Louis

Eric Saint-Georges

Xavier Jacquart

Gerard Lebizay

Marcus Enger

Stephane Lengelle

Francoise Bottau

Philippe Elie

Jean-Francoise Le Pennec

Patrick Michel

Alain Benayoun

Jeffrey Haskell Derby

Pierre Secondo

Rene J Glaise

Ken Van Vu

Allen Leonid Roginsky

Olivier Hericourt

Hong Linh Truong

John E Drake, Jr

Michael Eugene Locke

Aurelien Bruno

Levent Gun

Raif O Onvural

Henri J Nussbaumer

Olivier Daude

Andre Pauporte

Aurélien Bruno

Guy Euget

Michel Y Quintin

Francois Kermarec

Daniel T Lai

Clement Y Poiraud

Hubert Crepy

Pierre Austruy

Jacques Belloc

Jean-Paul Chobert

Gilbert Furlan

Serge Fdida

Theodore E Tedijanto

Paolo Scotton

Claude J Gergaud

Helene Cerf-Danon

Khamphuc Daulasim

Guy Roulier

Yves Nicolas Etorre

Alain Croisier

Philippe Noailly

Andre Milewski

Jean Bidard

Jean-Pierre Alfonsi

Jean-yves Leboudec

Eric S Georges

Thierry Liethoudt

Jean-Marie Munier

Daniel G Mauduit

A method and system for implementing secure network communications between a first device and a second device, at least one of the devices communicating with the other device via a firewall device, are provided. The method and system may include obtaining an encryption parameter that is shared by the first device, second device and firewall device. A data packet sent by the first device may then be copied within the firewall device, so that decryption of the copy of the data packet within a portion of the firewall device may take place. In particular, the portion of the firewall device in which decryption takes place is defined such that contents of the portion are inaccessible to an operator of the firewall device. Thus, scanning of the decrypted copy of the data packet for compliance with a predetermined criterion may take place within the firewall device, without an operator of the firewall device having access to the contents of the data packet to be transmitted. Thereafter, the original data packet can be forwarded to its originally intended recipient.

Method and system for securely scanning network traffic

Header compression system for compressing the header of the data packets of a flow transmitted from an ingress node to an egress node through a data transmission network comprising template creating means, in both ingress node and egress node, adapted for creating the same compression template from a predetermined number of uncompressed data packets at the beginning of the flow respectively transmitted by the ingress node and received by the egress node, and header compression means, in the ingress node, adapted for compressing the header of each packet following the predetermined number of uncompressed data packets before transmitting it through the data transmission network, the compression being achieved by using the compression template.

Packet header compression system and method based upon a dynamic template creation

A method and system for implementing secure communications between a plurality of devices are provided. The method and system generally include the provision of at least one common encryption parameter to each of the plurality of devices, as well as an identification of the plurality of devices to one another. This information can be maintained and shared by interaction of the plurality of devices with a designated server device. In this way, a secure, point-to-point connection between at least two of the plurality of devices can be established.

Multipoint server for providing secure, scaleable connections between a plurality of network devices

Certain exemplary embodiments provide a method for converting data packets based upon IPv4 protocol into data packets based upon IPv6 protocol, said method comprising converting any data packet based upon the IPv4 protocol into a data packet based upon the IPv6 protocol before transmitting it to an IP switched network using information provided by an external server, and converting any data packet based upon the IPv6 protocol provided by said IP switched network into a data packet based upon the IPv4 protocol before transmitting it to a first or second workstation.

System for converting data based upon IPv4 into data based upon IPv6 to be transmitted over an IP switched network

A method for operating a node in a computer network is disclosed, where the network is made up of nodes connected by links. The method has the steps: determining an alternate path for one or more links; reserving resources for the alternate path; and rerouting traffic on the alternate path in case of a link failure. The alternate path may be periodically updated. A plurality of alternate paths may be maintained. The alternate paths may not have any links in common. User traffic may be rerouted substantially simultaneously to each link of the alternate path in the event of failure of a primary path.

Method and system for a local and fast non-disruptive path switching in high speed packet switching networks

A method and system for enabling interconnection of VPNs is disclosed. An interconnection device manages an interconnection process at one or more facilities including, for example, a gateway device. The gateway device has information relating to a plurality of VPNs, and may facilitate interconnection between devices on at least two of the VPNs by determining that one device is in fact a member of a first one of the VPNs, and by forwarding connection parameters of the first VPN to the second VPN on an as-needed basis. In this way, the gateway allows interconnection without the need for a completely centralized decision-making process, and does so independently of the type of device and/or VPN(s) being used. Moreover, the gateway may implement only those VPN parameters needed by both VPNs to communicate with one another with a desired level of security, thereby simplifying the routing and forwarding processes associated with the actual communication occurring via the interconnection. The information related to the plurality of VPNs and their respective member devices may be stored in a mapping table at the gateway, and identification parameters of a device seeking interconnection and/or associated VPN parameters may be verified by the use of digital certificates.

Virtual private network crossovers based on certificates

Method for transmitting high-priority packets in an IP transmission network based upon the Internet Protocol (IP) wherein low-priority packets or fragments of packets are transmitted between a sender and a receiver and at least a high-priority packet can be transmitted from the sender to the receiver by pre-emption of a low-priority packet or a fragment of packet. the method comprises in the sender, the steps of determining whether a low-priority packet or fragment of packet is being transmitted from the sender to the receiver when a high-priority packet has to be transmitted, setting to 1 a reserved bit within the IP header of the high-priority packet used as a pre-emption indicator if a low-priority packet or fragment of packet is currently transmitted, transmitting the high-priority packet with the pre-emption indicator set to 1 from the sender to the receiver, and resuming the transmission of the low-priority packet or fragment of packet at the end of transmission of the high-priority packet.

Method for transmitting high-priority packets in an IP transmission network

A method and system of transmitting data frames from a sending unit () to a receiving unit () in a data transmission network comprising at least a backbone () wherein the data are transmitted over high speed links enabling long Maximum Transmission Units (MTU) between an ingress node () connected to the sending unit by a first access link () and an egress node () connected to the receiving node by a second access link (), with at least one of the first and second access links being a low speed access link requiring the data frames to be segmented into short MTUs between the sending unit and the ingress node and between the egress node and the receiving unit. A plurality of consecutive segmented data frames () belonging to the same flow of data transmitted from the sending unit to the ingress node are assembled by the ingress node into an assembled data frame () corresponding to the long MTU, the assembled data frame is transmitted over the backbone from the ingress node to the egress node at a high speed authorized by the backbone links, and the assembled data frame is de-assembled into consecutive segmented data frames () corresponding to the short MTUs by the egress node before being transmitted to the receiving unit.

Method and system for assembling segmented frames of data transmitted over a backbone network

A method is given for sharing reserved bandwidth between a plurality of connections issuing from a port of a node. A connection bandwidth is determined for each connection of the plurality of connections. An aggregate bandwidth is determined for all connections of the plurality of connections issuing from the port, the aggregate bandwidth being less than a sum of the connection bandwidth for all connections. The aggregate bandwidth is compared with a maximum access rate for the port, and in the event that the aggregate bandwidth does not exceed the maximum access rate, reserving the aggregate bandwidth for the port.

Method and system for sharing reserved bandwidth between several dependent connections in high speed packet switching networks

A method and system for reserving a virtual connection from a source workstation to a destination workstation. Packets of data are transmitted over a network between an ingress node of the source workstation and an egress node of the destination workstation. In accordance with the method of the present invention, a reservation request is delivered from the source workstation to a reservation server. The reservation server includes a user database for storing the identification of each user allowed to access to the reservation server and also stores the rights of each user. The reservation server further includes a network database for storing the information describing a network capacity required to set up the virtual connection. A verification is then performed to determine whether or not the reservation request may be validated in view of user information within said source workstation. A second verification is performed to determine whether or not the capacity of said network is sufficient to meet the requirements of the reservation request. In response to the capacity of the network being sufficient to meet the requirements of the reservation request, a virtual connection is established from the ingress node to the egress node.

System and method for reserving a virtual connection in an IP network

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La Gaude, France

Claude R Galand