International Business Machines Corporation

Lilian Sylvia Fernandes

Vasu Vallabhaneni

Vinit Jain

Dwip N Banerjee

Deanna Lynn Quigg Brown

Venkat Venkatsubra

Kavitha Vittal Murthy Baratakke

Patrick Tam Vo

Jorge Rafael Nogueras

Jeffrey Paul Messing

David Zhiwei Dai

Deanna Lynn Brown

Methods, systems, and products are provided for tunneling IPv6 packets. Embodiments include receiving, by an origin IPv6 border router from an origin IPv6 host, an IPv6 packet having an IPv6 destination address; receiving, by an origin IPv6 border router from an origin IPv6 host, an IPv4 address for a destination IPv6 border router retrieved from a data structure associating IPv6 destination addresses with IPv4 addresses for destination IPv6 border routers; encapsulating, by the origin IPv6 border router, the IPv6 packet in an IPv4 packet; and sending the encapsulated packet to a destination IPv6 border router at the IPv4 address. In many embodiments, encapsulating, by the origin IPv6 border router, the IPv6 packet in an IPv4 packet is carried out by adding an IPv4 header to the IPv6 packet.

Tunneling IPv6 packets

A data processing system for resending a previously sent email message. A new recipient for the previously sent email message is selected. The new recipient of the previously sent email message is added in response to selecting the new recipient, wherein the previously sent email message is directed to the new recipient and a previous recipient. An indicator to the previously sent email message is added in response to selecting the new recipient, wherein the indicator indicates that the new recipient has been added to a form a new version of the previously sent email message. The new version of the previously sent email message is sent in response to adding the indicator, wherein the indicator causes the new version of the previously sent email message to replace the previously sent email message at an email program of the previous recipient.

Method and apparatus for adding recipients to sent email

A method, system, and computer program product for delivering data, received from a network on a network adapter to a pre-assigned port, to a storage buffer assigned to an application are disclosed. An application designates an application-specific buffer within a local data processing system for buffering data communicated with the application. The local data processing system reports to a network interface of the local data processing system a memory address of the designated application-specific buffer, and the data processing system designates a port on which to receive packets addressed to the memory address. The data processing system then sends a port registration message to the local network interface, enabling the network interface to compare the port number of incoming traffic to a registered port number and route incoming traffic from a remote data processing system directly to the designated application-specific buffers in the event of a match. In one embodiment, the present invention includes receiving in the network interface a packet addressed to the specific port and delivering data from the packet to said application-specific buffer.

Method, system, and computer program product for reducing network copies by port-based routing to application-specific buffers

A method and apparatus is provided for enabling a telephone caller to generate a brief message for transmission to an intended call recipient, as part of the initial procedure of setting up a phone call between the caller and recipient. The message is sent and displayed or otherwise made available to the recipient before the recipient is required to answer the call. The message could comprise a sequence of alphanumeric characters that conveyed an abbreviated message, or otherwise indicates the purpose to the call to the recipient or provides other information. Respective characters could be transmitted as corresponding sequences of binary tones sent to the call recipient between telephone rings.

Method for sending telephone message tag from calling party to recipient

The present invention provides a method and apparatus for multicast tunneling for mobile devices. The method comprises receiving a multicast packet directed to a plurality of mobile nodes, the mobile nodes being associated with a home subnet and identifying if any of the plurality of the mobile nodes are coupled to a subnet other than the home subnet, wherein each of the identified mobile nodes has an associated transmission path through which that mobile node can be reached. The method further provides that in response to determining that at least some of the mobile nodes are coupled to the subnet other than the home subnet, determining which of the identified mobile nodes has a common next hop in their associated transmission path and generating a packet including at least a portion of the multicast packet and including in the packet a list of mobile nodes that have the common next hop. The method further provides for transmitting the generated packet to the common next hop.

Method for multicast tunneling for mobile devices

A method, apparatus, and computer instructions for handling requests in a data processing system. A plurality of processes is provided to handle the requests. Each of the plurality of processes is assigned to handle requests from a subset of foreign ports within a plurality of foreign ports such that a set of foreign ports assigned to a process is unique with respect to other subsets of foreign ports within the plurality of foreign ports. A foreign port is identified in a request in response to receiving the request. The request is sent to a process assigned the subset of foreign ports having a match to the foreign port in the request, wherein the process handles the request.

Method and apparatus for server load sharing based on foreign port distribution

A method for negotiating a protocol for a conversation in which data packets are transmitted. Responsive to establishment of a link aggregation with an endpoint for the conversation, an algorithm for processing the data packets in the conversation is selected to form a preferred algorithm. A request is sent to the endpoint. This request indicates the preferred algorithm for processing the data packets in the conversation. A reply to the request is received from the endpoint. A determination is made as to whether a convergence has occurred. The data packets in the conversation are processed using the preferred algorithm in response to a determination that the convergence has occurred.

Method for negotiating link protocols for link aggregations

A method in a data processing system for routing a packet to a target data processing system. With the method and apparatus, a global address for the target data processing system is placed in the packet. A hop-by-hop option may then be set in the packet, which contains a media access control address for the final destination. This option causes a router for a subnet on which the target data processing system is located to send the packet to the target data processing system using the media access control address without performing a link level address discovery operation.

Method and apparatus for transmitting wake-up packets over a network data processing system

A system and method of reducing data corruption due to recycled Internet Protocol (IP) identification numbers are provided. When IP packets are being fragmented and the IP identification number of the packets is cycling through a specific group of numbers, the size of the first fragment of a packet is decremented each time the IP identification cycles through the numbers. Initially, the size of the first fragment of a packet will be set to a maximum number. This size will be decremented at each pass of the IP identification through the numbers until the size of the first fragment of a packet reaches a pre-defined minimum size. When that occurs, the size of the first fragment of a packet will again be set to the maximum number. By decrementing the size of the first fragment, fragment offset of the other fragments that make up the packet will be changing. This then reduces the likelihood of having two fragments having the same IP identification number be mistaken as being from the same packet.

System and method of reducing data corruption due to recycled IP identification numbers

An apparatus and method for dynamic sharing of server network interface resources are provided. With the apparatus and method, when a master application server detects a heavy load condition on one or more network interfaces associated with the server computing device, the master application server spawns additional slave application subservers. The network interfaces are distributed across the slave application subservers and are bound to the network interfaces to which they are associated. The master application server continues to listen for traffic on a standard port of all network interfaces. When a new communication connection request is received via a port associated with a network interface, the slave application subserver associated with the network interface will first process the new communication connection request without having to have the master application server route the data packet to the slave application subserver.

Apparatus and method for dynamic sharing of server network interface resources

A method for enabling multi-tuple TCP sockets within a computer network is disclosed. All possible connection paths between a first computer and a second computer are initially determined. Then, tuple information of all the possible connection paths are stored in a respective socket of the first and second computers as multi-tuple information. Next, one of the possible connection paths is designated as a preferred path and the remaining possible connection paths are designated as alternate paths. Finally, data packets are transmitted via the preferred path after a TCP connection has been established between the first and second computers on the preferred path.

Apparatus for enabling multi-tuple TCP sockets within a computer network

A method and system for providing subgroup conversation during a teleconference enables side conversations during a virtual meeting. A passcode is used by parties to join the subgroup conversation, so that privacy of the subgroup is maintained. Alternatively, an administrator may set up subgroups and either join or invite members, who may toggle between the main teleconference and a subgroup teleconference using a standardized user input. The system may be implemented in any telephone network and across telephone networks such as public switched telephone networks (PSTNs), wireless networks, voice over Internet protocol networks and/or private branch exchanges (PBXs).

Growing community of inventors

Austin, TX, United States of America

Lilian Sylvia Fernandes