Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.

Abstract: A scaleable high-capacity network comprises several non-uniform composite-star networks interconnected by a number of lateral uniform composite-star networks, thus forming an irregular two-dimensional network. Each non-uniform composite star network comprises electronic edge nodes, possibly of significantly different capacities, interconnected by optical core nodes. The optical core nodes are not connected to each other, and each may be configured differently and have a different reach index, where the reach index of a core node is the number of edge nodes to which the core node directly connects. The selection of a route through a core node within a non-uniform composite-star network is based on a composite index determined according to the reach index of the core node and the propagation delay along the route.

Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.

Abstract: A clock synchronization backup mechanism is disclosed for maintaining clock synchronization during periods of degraded synchronization. The clock synchronization backup mechanism includes a jitter buffer having a fill value at a given sample time which is compared with a threshold. When the jitter buffer fill value exceeds the threshold, a non-normal condition is registered and the local clock frequency is set to a combination of a long-term frequency setting plus a threshold sensitive frequency adjustment. The clock synchronization backup mechanism is particularly useful for overcoming residual errors accumulated due to temperature change, oscillator degradation, and a variety of other system perturbations problematical for clock synchronization mechanisms known in the art.

Abstract: A method and apparatus are provided for low latency loss-free burst switching. Burst schedules are initiated by controllers of bufferless core nodes and distributed to respective edge nodes. In a composite-star network, the burst schedules are initiated by any of a plurality of bufferless core nodes and distributed to respective edge nodes. Burst formation takes place at source nodes and a burst size is determined according to an allocated bitrate of a burst stream to which the burst belongs. An allocated bitrate of a burst stream may be modified according to observed usage of scheduled bursts of a burst stream. A method of control-burst exchange between each of a plurality of edge nodes and each of a plurality of bufferless core nodes enables burst scheduling, time coordination, and loss-free burst switching. Both the payload bursts and control bursts are carried by optical channels connecting the edge nodes and the core nodes.

Abstract: One or more addresses are encoded into a single regular expression. The regular expression may be used for configuring and/or storing addressing information in a network device.

Abstract: A system, device, and method for bridging network traffic between a first communication interface and a second communication interface uses a pre-computed bridged routing table to enable a bridge to be established quickly. The pre-computed bridged routing table includes the second communication interface as an outgoing interface in each routing table entry having the first communication interface as an outgoing interface. The bridged routing table is pre-computed for the pair of communication interfaces by searching a main routing table for all main routing table entries having the first communication interface as an outgoing interface and creating, for each such main routing table entry, a corresponding bridged routing table entry including all outgoing interfaces from the main routing table entry and additionally including the second (bridged) communication interface as an outgoing interface. Bridged routing tables may be pre-computed for multiple potential communication interface pairs.

Abstract: An apparatus and method for echo cancellation that detects and tracks the active regions of the echo channel impulse response rather than the entire echo channel impulse response and uses this sparse model to cancel the echo component of the received signal. Two sets of filter coefficients are used, one to remove and track the active regions and one to detect the active regions.

Abstract: A data storage device that may be connected directly to a power integrated network includes a network interface configured to communicate with the power integrated network and a memory configured to store data. The data storage device also includes a control module to control the transmission of data from the memory to the power integrated network and the storage of data received from the power integrated network in the memory. A power module in the data storage device receives power from the power integrated network. The power module converts the power received from the power integrated network to a voltage level that may be used to power the data storage device.

Abstract: A system, device, and method for supporting virtual private networks in a label switched communication network utilizes an extended Next Hop Resolution Protocol in order to establish a label switched path for a particular virtual private network. Specifically, label information and a corresponding virtual private network identifier are carried in certain Next Hop Resolution Protocol messages. A label request and a corresponding virtual private network identifier is carried in Next Hop Resolution Protocol Resolution Request messages that are forwarded hop-by-hop by a number of devices along a forward path. Label mapping information and a corresponding virtual private network identifier are carried in Next Hop Resolution Protocol reply messages that are forwarded hop-by-hop by the devices in the forward path.

Abstract: A multilink trunk from a client device in a communication network is split between two aggregation devices such that each aggregation device is connected to at least one link of the multilink trunk. The aggregation devices work in conjunction to appear to the client device as a single device connected to the client device over the multilink trunk. The aggregation devices transmit identical bridge protocol data units to the client device over their respective links of the multilink trunk. The aggregation devices exchange operational information and data packets over inter-device communication ports. A failure of the split multilink trunk at one aggregation device is restored through the other aggregation device.

Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.

Abstract: The present invention relates to a biocidal cleaning composition comprising a biocide, a surfactant of formula R—O—(G)n, and an amphoteric surfactant; wherein R is an alkyl group; G is a saccharide residue; and n is a number from 0–4 to 10.

Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.

Abstract: A method includes creating a network model that includes a plurality of objects that represent assets in a real world system at real world times. The network model is displayable by a geographic information system. A first object is entered in the network model. The first object is associated with a first creation date and a first expiration date at first and second real world times, respectively. A second object is entered in the network model. The second object is associated with a second creation data and a second expiration date at third and fourth real world times, respectively. A system clock in the network model is set to a fifth real world time that is between the first and third real world times. Displaying the first object and any additional objects in the network model that represent assets present in the real world system at the fifth real world time.

Abstract: A presence system 4 manages communications in a network 2 between initiating parties 8 and recipient parties 6. The system 4 has a database 10 storing entries each relating to recipient parties 6. Each entry is stored according to a unique identifier assigned to the corresponding recipient party 6 and includes at least one rule specifying the manner of communications between the corresponding recipient party 6 and an initiating party 8.

Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.

Abstract: A feedback output queuing system, apparatus, and method controls the rate at which packets are forwarded from the ingress ports to a particular output queue over the switching/routing fabric based upon the level of congestion at the output queue. The output queue is monitored and the level of congestion at the output queue is determined based upon a predetermined congestion determination mechanism. An ingress forwarding scheme is determined based upon the level of congestion at the output queue. Information is forwarded from the ingress ports to the output queue based upon the ingress forwarding scheme.

Abstract: Managing link bandwidth in a communication network having multiple routing devices is described. A connection path is requested across the network to establish communication from a sending process to a receiving device. Each device on the connection path is connected to a next device on the connection path by a link having an associated bandwidth. A connection admission control process is performed for at least one routing device on the connection path. A sending process reservation is determined as a function of sending process characteristics and QoS, network state, and admission policy. The application-aware reservation factor influences an amount of link bandwidth that is reserved for the sending process.