Abstract:
Disclosed is an apparatus and method for storing and searching computer node addresses in a computer network system. In one embodiment, the apparatus comprises a frame forwarding device such as a switch. The switch includes two MAC address tables including a primary MAC address table and secondary MAC address table both for storing and searching MAC addresses. The primary table stores records that contain compressed values of MAC addresses. The records are contained in storage locations that are referenced using the compressed value of the MAC address as a search index. In order to account for searching collisions that may result from different MAC addresses compressing to the same value, each record in the primary address table is linked to a chain of records in the secondary table. The records in the secondary table store the full value of the MAC address. Each chain of records in the secondary address table contains MAC addresses the present invention.
Abstract:
A method for actively detecting link failures on a high availability backplane architecture. The backplane system includes redundant node boards operatively communicating with redundant switch fabric boards. Uplink ports of the node boards are logically grouped into trunk ports at one end of the communication link with the switch fabric boards. A probe packet is sent, and a probing timer is set whenever either a specified number of bad packets are received, or an idle timer expires. If a response to the probe packet is received before the probe timer expires then the link is deemed valid, otherwise the link is presumed to have failed. Preferably, either the node boards or the switch fabric boards are configured to properly handle a probe pack, which preferably has identical source and destination addresses.
Abstract:
An apparatus and methods for securely forwarding data packets at a data switching node in a data transport network is provided. The data switching node maintains a switching database of switching entries. Each switching entry has a modification protection feature preventing its modification when activated. Dynamic topology discovery of data network nodes can be disabled via topology discovery control flags associated with individual physical communications ports of the data switching node. Unknown destination flood data traffic is not replicated to physical communications ports having topology discovery disabled or specifying the suppression of replication of such unknown destination data traffic thereto. The advantages are derived from a data switching node being enabled to operate concurrently in friendly and hostile environments while detecting, preventing and reporting incidences of hostile MAC ADDR attacks.
Abstract:
Disclosed is an apparatus and method for storing and searching computer node addresses in a computer network system. In one embodiment, the apparatus comprises a frame forwarding device such as a switch. The switch includes two MAC address tables including a primary MAC address table and secondary MAC address table both for storing and searching MAC addresses. The primary table stores records that contain compressed values of MAC addresses. The records are contained in storage locations that are referenced using the compressed value of the MAC address as a search index. In order to account for searching collisions that may result from different MAC addresses compressing to the same value, each record in the primary address table is linked to a chain of records in the secondary table. The records in the secondary table store the full value of the MAC address. Each chain of records in the secondary address table contains MAC addresses the present invention.
Abstract:
A method of synchronizing the information held in a switching database associated with a switching function of a data switching node, with a data network node identifier record associated with a management processor enabling a managed mode thereof is provided. An entry of the switching database is modified. A status specifier corresponding to the modified entry is set to signify the modification thereof. An inspection of the switching database is initiated on the expiration of an adjustable timer, and the information held in modified switching database entries is synchronized with the data network node identifier record. This method of synchronization of the information held in the switching database spreads out of burst changes thereof over time. The advantages are derived from the use of a more economical management processor while providing the same or enhanced levels of service of the data switching node.
Abstract:
An optical coupling device includes a substrate loaded with a first optical module and IC drivers, and a second optical module intending to couple with the first optical module. The substrate defines an electrical connection port at one end thereof, the first optical module is located at another end of the substrate. The second optical module includes a first insulating holder and fiber cores embedded in the insulating holder. The first optical module includes a second insulating holders and VCSELS and PDS embedded with the second insulating holder, the fiber cores are directly coupled with VCSELS and PDS to transmit light lines therein.
Abstract:
The present invention is directed to a system and method for visualizing information, e.g., information regarding a sporting event. The method may comprise identifying an event type and generating a plurality of buttons, the plurality of buttons arranged in a button hierarchy. A first level of the button hierarchy comprising one or more first level buttons is displayed with a lens further displayed on a given one of the one or more first level buttons, the lens operative to present first level data for the given first level button.
Abstract:
A slide cover for enclosing a region comprising an active region on a slide is provided. A slide cover and a slide are also provided. A slide cover for enclosing a region comprising an active region on a slide, where the slide is placed in a clamshell slide holder is also provided.
Abstract:
A new method to form an integrated circuit device is achieved. The method comprises providing a substrate. A sacrificial layer is formed overlying the substrate. The sacrificial layer is patterned to form temporary vertical spacers where conductive bonding locations are planned. A conductive layer is deposited overlying the temporary vertical spacers and the substrate. The conductive layer is patterned to form conductive bonding locations overlying the temporary vertical spacers. The temporary vertical spacers are etched away to create voids underlying the conductive bonding locations.
Abstract:
A folding bed frame has a pair of support tubes, two pairs of connection tubes, three pairs of leg sets, a plurality of positioning devices, a plurality of connection bars, a plurality of angle plates, and a plurality of T-shaped plates. Each leg set has a generally S-shaped rod, the generally S-shaped rod having a lower portion, a middle portion and an upper portion, a curved rod disposed on the middle portion of the generally S-shaped rod, a leg rod having an upper end disposed on a bottom of the middle portion of the generally S-shaped rod, and two of the connection bars connected to one of the curved rods, one of the generally S-shaped rods, and one of the leg rods. Two angle plates are connected to one curved rod and one connection tube. Two T-shaped plates are connected to one curved rod and two connection tubes. Each positioning device is disposed in the corresponding connection tube to position the corresponding connection tube and the corresponding support tube.