Abstract: Disclosed are methods and apparatus for network wide discovery of service ports of a gateway device in a storage area network (SAN) that are available for use by hosts on a first particular network segment, for example, for accessing storage devices in the SAN. The hosts of the first Internet Protocol (IP) network segment implement an IP and not a fiber channel protocol, while devices in the SAN (and possibly other hosts on other network segments) implement a fiber channel protocol. The particular network segment may also be isolated from other network segments that are each in communication with a different gateway device or set of service ports than the first network segment. In general, available ports are discovered with respect to a particular network segment, such as the first network segment. That is, only the service ports that are capable of communication with the first network segment are discovered to be available for the hosts of such first network segment.

Abstract: Disclosed are device managers, systems and methods for coordinating the configurations of devices on a network. An exemplary system having devices and/or device managers in accordance with embodiments can include at least two devices coupled to a network where the devices are able to parse data in a meta or common information format, such as Extensible Markup Language (XML). The network may be a Virtual Private Network (VPN), for example. An exemplary method in accordance with embodiments can include: connecting first and second devices to a network; configuring the first device; generating the first device configuration in its native command format and the second device's configuration as meta data; applying the meta data to a suitable parser in the second device; and generating readable configuration commands to configure the second device.

Abstract: Performing management operations for a mobile node present in a foreign network includes performing an address management operation and a mobility management operation. The address management operation includes receiving an address request message at a home address server of a home network of the mobile node, assigning a fixed home address to the mobile node, and sending an address acknowledgment message communicating the fixed home address. The mobility management operation includes receiving a registration request message requesting registration for the mobile node, and registering the mobile node in response to the registration request message.

Abstract: Disclosed are, inter alia, methods, apparatus, computer-storage media, mechanisms, and means associated with loss of reducing flooding in a bridged network, typically including a device directly connected to multiple upstream bridges. These bridges are configured such that the device receives broadcast/multicast traffic from a single interface of one of the bridges, while allowing unicast traffic over each of the communications links connecting the device to the bridges. In one configuration, the device implements virtual machine(s), each including a virtual network interface associated with a MAC address; and the directly connected bridges are configured, for each particular MAC address of these MAC addresses of the virtual interfaces, such that one and only one of the bridges will forward packets having the particular MAC address as its destination address over a communications link directly connected to the device.

Abstract: In one embodiment, a security device monitors for outgoing re-transmission messages indicating that an endpoint located in a multi-homed network transmitted an unanswered initial connection request. Responsive to identifying one of the outgoing re-transmission messages, the security device identifies destination address information included in the identified re-transmission message. The security device then causes another security device associated with a different link of the same multi-homed network to update its internal state table according to the identified destination address information. As a result, a response to the outgoing re-transmission can be forwarded to the multi-homed network regardless of which security device receives the response.

Abstract: A system and method allowing control of VoIP communications by configuring a Network Address Translator (NAT) is provided. In a first NAT configuration, such a port-restricted NAT, peer-to-peer Voice over Internet Protocol (VoIP) communications are permitted between a VoIP originator and a receiver. In a second NAT configuration, such as a symmetrical NAT, peer-to-peer communications are not possible without further cooperation of the NAT. In this manner, an entity that has control of the NAT, such as an ISP, is able to have a degree of control over traffic using network resources such as bandwidth.

Abstract: A mailbox system that notifies the mail recipient, via a communication network, of the presence of physical mail in his or her mailbox. A button is placed in each mail slot that causes an electronic notification message to be sent to the mail recipient, thus notifying the mail recipient of the presence of physical mail in his or her mail slot and also causes an LED to be illuminated. When the physical mail is retrieved from the mail slot, the button is pressed again to deactivate the LED. Individual pieces of physical mail can be tagged with a RFID tag. A sensor in the mail slot reads the RFID tag and causes an electronic notification to be sent to the mail recipient.

Abstract: In one embodiment, a hybrid packet repair scheme adaptively switches among unicast retransmission, multicast retransmission, and Forward Error Correction (FEC) depending on the receiver population and the nature of the error prompting the repair operation. The NACK patterns are used to heuristically determine the degree of correlation among packet losses. In an additional embodiment, wasting bandwidth and processing on retransmissions of FEC that will fail to correct the errors is avoided by evaluating the nature of the error and the bandwidth needed to optimally repair it. Unicast retransmission, multicast retransmission, or FEC repair is then dynamically performed according to the loss patterns derived from the NACK arrivals and other network conditions.

Abstract: An apparatus and method for switching a mobile processing device from communicating over a wireless connection with a first base unit to a second base unit based upon latency. In accordance with this invention, the mobile processing device determines latency information for packets being transmitted over the wireless connection to and from a base unit. The latency information is compared to a threshold value. If the latency information is greater than the threshold value, the mobile processing device adjusts parameters of the wireless connection between the mobile processing device and the network.

Abstract: A network switch having a hybrid switch architecture, which is scalable to increase connectivity, buffering, and bandwidth by using multiple shared-memory switch fabrics and multiple crossbar switch fabrics. Each of the crossbar switch fabrics is coupled to each of the shared-memory switch fabrics. The shared-memory switch fabrics are configured to store and retrieve packets. The crossbar switch fabrics are configured to distribute and recollect packets to and from each of the shared-memory switch fabrics. The network switch having a hybrid switch architecture distributes packets from a crossbar switch fabric to the multiple shared-memory switch fabrics to share the distributed packets among the multiple shared-memory switch fabrics.

Abstract: A method and a system are disclosed for making available telecommunication network resources associated with network subscribers and exposed by a Network Service Gateway (NSG) to clients of the NSG services based on stored subscriber availability preferences. The method and system can be implemented using an availability Policy Server that sits next to or inside of the NSG. The Policy Server interprets the stored availability preferences of subscribers in response to requests for subscriber information. These availability preferences are translated into a low-level policy rule language. The Policy Server implements a policy rule evaluator to evaluate policies written in this language. Policies written in the low-level language are referred to as aPolicies (availability policies). An aPolicy receives as input a stream of events. Based on these events, the aPolicy may decide to take one or more actions. The NSG or clients of the NSG will carry out the execution of the actions.

Abstract: In one embodiment, a method can include: (i) pre-configuring a stream control transmission protocol (SCTP) association; (ii) receiving a transmission control protocol (TCP) packet in a network device, where the TCP packet is intended for a destination node; (iii) encapsulating the TCP packet into an SCTP payload; and (iv) transmitting the SCTP payload across a wide area network (WAN).

Abstract: A method is provided for reducing interferences in a wireless communication system. First, in one or more cells, a plurality of frequency-time frames are generated each having at least one predetermined frequency-time open window unused for desired wireless communications. The interference information is derived from the predetermined open windows of the frames. The interference for incoming signals is reduced by calculating beamforming weights using the observed interference information.

Abstract: An RSVP node that has crashed and restarted sends a non-zero Recovery Time value in a Restart_Cap object of a Hello message. Other nodes receiving such messages can detect, based on the non-zero Recovery Time value, that the sending node is restarting. In particular, a first RSVP node can detect whether a second, neighbor node has restarted regardless of the order of restart with respect to the first and second nodes. As a result, the first node can determine whether to forward PATH messages with Recovery Label or Suggested Label, as appropriate or necessary to rebuild label-switched paths with crashed and restarted nodes. Therefore, when multiple RSVP nodes crash relatively concurrently, the multiple nodes can restart gracefully and automatically detect what kind of communication to use in order to rebuild label-switched paths among themselves.

Abstract: A method, system, and apparatus are provided for testing a service in a network. A simulated interface is created on a network device by a Network Management Station (NMS). Thereafter, an instruction is received at the simulated interface from the NMS. The instruction comprises a source address, a destination address and other information to test a service. The service is tested on the network device based on the received instruction. A response is generated from the test. The response indicates whether the service is working as intended between the source address and the destination address. The response is sent from the simulated interface to the NMS.

Abstract: Coding quantized transform coefficients as occur in image compression combines a position identifying method to identify the relative position of clusters of consecutive non-zero-valued coefficients, an amplitude event identifying method to identify amplitude events in the clusters of non-zero-valued coefficients, and a coding method to code the position events, amplitude events, and signs of the amplitudes in the clusters. The method is particularly applicable to a series of quantized transform coefficients where clusters are likely to occur.

Abstract: A system for enhancing eye gaze in a telepresence system includes a plurality of local cameras coupled to at least one local display. Each local camera is directed to at least one respective local user section and operable to generate an image of the respective local user section. The system also includes a plurality of remote displays. Each remote display is operable to reproduce the local video image of the local user section. Within the system the plurality of remote displays and the plurality of local cameras are aligned such that when a first local user within a local user section looks at a target at least one remote display is operable to reproduce the local video image of the first user section comprising the first local user such that the eye gaze of the reproduced image of the first local user is directed approximately at a corresponding target.

Abstract: An optical network monitoring system and method provide for optical network diverting or further legal intercept, operational and/or other monitoring of general or specific transmission information that may be transmitted via a network optical branch. In one embodiment, a splitter within a diverter assembly diverts a portion of a received transmission signal (strength) to an optical receiver or re-transmitter, and outputs a further portion of the signal via a diverter assembly output or further via a re-transmitter or booster. In another embodiment, the splitter is generally matched to the receiver. A further embodiment provides for transferring the diverted portion to a monitoring assembly with which the diverting assembly may be matched, disposed or otherwise integrated, and which may provide for configuring the diverting assembly.

Abstract: A technique is performed within a DNS server to respond to a DNS message. The technique includes receiving the DNS message from a requesting device (e.g., a DHCP server), and generating a search result based on a search of a portion of the DNS message for a request to delete a specific record (i.e., a specific, predefined record which is not expected to exist in the DNS). The technique further includes selectively providing and not providing current state information (or other information) to the requesting device depending on whether the search result indicates that the request to delete the specific record resides within the portion of the DNS message. Such operation allows for augmented operation with augmented DNS clients, as well as non-augmented operation with legacy equipment.