Abstract: Described is a system and method for receiving an electronic mail including an attachment file and separating the attachment file from the electronic mail. The attachment is then sent to a remote source and the attachment file is replaced with a substitute file including identifying data for retrieving the attachment file from the remote source. The electronic mail with the substitute file is then forwarded to a receiver.

Abstract: 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.

Abstract: Today, a Client and an associated Server use a single IP priority for all the data packets exchanged over a TCP session used to transport the Telnet traffic (file transfer and screen related interactions). The present invention discloses a method and system to provide the Client with the capability, when exchanging a file with an SNA Host over a TCP session, to dynamically change (i.e downgrade) the IP priority associated to all data packets flowing to the TN3270 Server over the TCP session, during the whole duration of the file transfer. The associated Server, on receipt of a data packet from the client (due to screen related interactions or to file transfers), memorizes the associated priority and uses this priority over all packets that it sends back to the client. This allows IP network implementation to give higher priority treatment to the data packets due to screen related interactions (interactive traffic) over data packets related to file transfer (batch traffic).

Abstract: 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.

Abstract: Today, a Client and an associated Server use a single IP priority for all the data packets exchanged over a TCP session used to transport the Telnet traffic (file transfer and screen related interactions). The present invention discloses a method and system to provide the Client with the capability, when exchanging a file with an SNA Host over a TCP session, to dynamically change (i.e downgrade) the IP priority associated to all data packets flowing to the TN3270 Server over the TCP session, during the whole duration of the file transfer. The associated Server, on receipt of a data packet from the client (due to screen related interactions or to file transfers), memorizes the associated priority and uses this priority over all packets that it sends back to the client. This allows IP network implementation to give higher priority treatment to the data packets due to screen related interactions (interactive traffic) over data packets related to file transfer (batch traffic).

Abstract: 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.

Abstract: Method in a telnet client for transmitting in a session, file traffic to an application through a telnet server in an Internet protocol (IP) network. The method includes assigning by the telnet client an IP transmission priority to file traffic different from the IP transmission priority used for interactive traffic and transmitting the file traffic to the telnet server using said assigned IP transmission priority.

Abstract: An access device for establishing a Systems Network Architecture (SNA) session between an SNA Client and an SNA application using Telnet 3270 services over a communication network. The communication network, has Telnet 3270 servers for accessing the SNA application. The access device comprises logic for: (1) receiving from a Telnet 3270 client, a request for establishing a Telnet 3270 session with a Telnet 3270 Server, the request comprising an identification of the SNA client associated with the Telnet 3270 client, (2) selecting a communication path within the communication network to access a Telnet 3270 server providing services to the SNA client by referring to a configuration table, which comprising, for each SNA client, one or more communication paths leading to one or more Telnet 3270 servers, and (3) forwarding the Telnet 3270 session request to a selected Telnet 3270 server along the selected communication path.

Abstract: 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.

Abstract: A method and system for implementing of Data Link Switching-like protocols within a high speed packet switching network environment. The invention relates to new access services for NBBS (Networking Broad Band Services) networks. A new access agent (implementing the DLSw Access Services) provides a dramatically simplified but comprehensive Data Link Switching Services across a wide area network and minimizes the latency to set up SNA paths across the network, while maximizing the efficiency of setting up these paths. The invention does not require the implementation of a complex and large TCP/IP protocol stack within the Data Link Switching node. The Access Agent implementing the DLSw node makes intensive use of such NBBS facilities as the Spanning Tree with the use of internode functional addresses, for the exchange of the control information necessary to efficiently set up paths across the network between DLSw access agents.

Abstract: The present invention relates to the transmission of Systems Network Architecture (SNA) information through the Internet Protocol (IP) network, and more particularly to a method and system for an SNA application user to locally select a target application at its current location and to launch a preferred (or the more appropriate) Telnet 3270 Client to access this target application in a one-step process.

Abstract: 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.

Abstract: Disclosed is a method and system of selecting a server from a plurality of servers for accessing Systems Network Architecture (SNA) applications from a client in an Internet Protocol (IP) network. The method comprises the steps of measuring using measurement probes from one or a plurality of measurement systems distributed in the IP network, performance and availability of each server for accessing one or a plurality of SNA applications; transferring in a single system within the IP network said performance and response time measurements; selecting in said single system an appropriate server for accessing a particular SNA application using said performance and availability measurements.

Abstract: The present invention relates to dynamic Client configuration and more particularly to a system and a method for automatically configuring a Client to access each desired SNA Application through an appropriate Server. A configuration feature (also called Automatic Server Configuration option) in a Client automatically retrieves a configuration code (also called Autoserver code, in order to configure the Client to access desired SNA Applications through appropriate Servers. A CGI (Common Gateway Interface, program on an Autoserver URL (Universal Resource Locator) system dynamically creates an Autoserver code (also called TN client configuration code). The Autoserver code is used by the Client to associate to each desired SNA Application an appropriate Server. The automatic configuration of the Client allows the user to directly access an SNA Application without having first to connect to an Intermediate Selection Application and Selection Screen.

Abstract: A method and system for establishing a Systems Network Architecture (SNA) session between SNA resources through a packet/cell switching network. The packet/cell switching network includes an origin access node that provides client access services, and at least one destination access node that provides server access services. In accordance with the method of the present invention a SNA session request is received from a source SNA resource for establishing an SNA session with a target SNA resource. An undirected message is broadcast over the packet/cell switching network to identify the destination access nodes that support the source SNA resource and that provide server access services. One or more positive replies are received from respectively one or more of the destination access nodes that support the source SNA resource and that provide server access services.

Abstract: The present invention relates to a method and system for pre-loading access nodes with the location of more frequently requested resources. The method includes declaring each locally supported communication protocol for participating to control message exchanges between nodes supporting a same communication protocol; receiving a message to locate a target resource; searching for information related to the location of the target resource in the Local Directory Database; broadcasting an undirected message to the other access nodes in the network to locate the target resource; receiving a control message from the destination access node providing access to the target resource, this control message comprising information related to the location of the target resource; and storing the information related to the location of the target resource in the Local Directory Database.

Abstract: A method and system for centralizing the LU definitions for one or a plurality of TN3270 servers. More particularly, a method and system for dynamically providing a Systems Network Architecture (SNA) Logical Unit (LU) definition for the establishment of a SNA session between a SNA client and a SNA application. The method of the present invention includes receiving a SNA session request from a telnet 3270 client, and in response thereto, retrieving a definition of a SNA LU from a table shared by one or more telnet 3270 servers. A local table within the telnet 3270 server is dynamically updating with the retrieved SNA LU definition.

Abstract: A method and system for delivering a datagram across multiple inter-network servers. The datagram is delivered from a source device having a first network level protocol to a destination device having a second network level protocol. The inter-network servers transport the datagram in accordance with a transport level protocol while the datagram has a transport priority defined by the first and second network level protocols. The source device delivers the datagram from a source port that designates the transport priority and the destination device receives the datagram at a destination port that also designates the transport priority. In accordance with the method of the present invention, either the source port or said destination port is first identified. The transport priority of said datagram is identified utilizing the transport priority designation of the identified source port or destination port. A current server capacity of each of the inter-network servers is determined.

Abstract: The present invention is directed to a method for defining a meshing of node to node connections in a communication network comprising a plurality of nodes interconnected with transmission links or parallel transmission groups, each parallel transmission group comprising a plurality of links.

Abstract: The present invention relates to connectionless transmission in high speed packet switching networks, and in particular to a group addressing method and system for sending a datagram to one or a plurality of destination nodes and within these nodes for duplicating the datagram and to forward it to multiple end users. The claimed invention takes advantage of a specific data transfer mode called "Remote Access to Functional Addressing" allowing the sending of a datagram to a destination node and within said node, the duplication of said datagram for a transmission towards multiple destinations.