摘要:
An active cable housing converts signals from one protocol to another protocol. Copper and/or an optical media may be utilized. PoE may provide power. Signals from a single interface are converted and distributed via a plurality of interfaces and vice versa. Signals received at one data rate are communicated via a plurality of interfaces at different rates. Signals received via a plurality of interfaces at one or more rates are combined, converted and/or communicated via a single interface at a different rate. The active cable housing may comprise RJ45 connectors and/or connectors that comprise a form factor that enable integration into a handheld device. The active cable housing may comprise a patch cord. The active cable housing may comprise one or more of a physical layer device, an OSI layer 2 device, a device that performs higher than OSI layer 2 functions and a switch.
摘要:
A system and method for secure communication for power over Ethernet (PoE) between a computing device and a switch. Various power management information can be used as inputs in a process for determining a power request/priority. This power management information can be communicated in Layer 2, Layer 3, or higher messaging during initial power allocation and ongoing power reallocation. Encryption of such messaging enables confidentiality, secure allocation processes, and prevention of denial of service attacks.
摘要:
A connector comprising one or more circuits and/or processors is operable to determine characteristics of an attached corresponding connector, an attached cable and/or a channel established via the corresponding connector and/or cable. The characteristics are stored in a register on the connector and/or communicated via a pin connection to a host and/or upstream device. Ganged connectors may communicate via a shared pin. Sensing pins in the connector detect presence of a shield on the cable. Cable diagnostics are run on the attached corresponding connector and cable by a PHY device that may be integrated within the connector. The connector may determine characteristics such as cable length, cable grade, presence of shielding, channel characteristics and/or crosstalk on the attached corresponding connector and/or cable. Based on the determined characteristics, a data rate is determined, transmission parameters are auto-negotiated and/or data may be communicated.
摘要:
A midspan power sourcing equipment (PSE) for operation with power over Ethernet (PoE). The midspan PSE provides powering over wire pairs that are also used for data communication. To ensure compatibility with legacy Ethernet devices, the ports used for transmission of data are designed with a low effective impedance at a frequency of operation.
摘要:
A system and method for enabling power over Ethernet (PoE) for legacy devices. Legacy devices often represent a large installed base of devices. This installed base of devices (e.g., mobile computing devices) may have little or no PoE functionality. It is a feature of the present invention that an external device (e.g., dongle) can be used to retrofit such an installed base of devices for use with state of the art PoE functionality.
摘要:
A system and method for continual cable thermal monitoring using cable characteristic considerations in Power over Ethernet (PoE) applications. Cable heating in PoE applications is detected through changes in electrical characteristics of the cable itself. By periodically monitoring the electrical characteristics such as insertion loss or cross talk of the cable, it can be determined whether the cable has exceeded certain thermal operating thresholds.
摘要:
A system and method for implementing fairness in the powering of computing devices in a power over Ethernet (PoE) application. Power supplies in a power sourcing equipment are often oversubscribed. This oversubscription can lead to starvation of certain computing devices that have power requests that are not granted relative to competing requests. A fairness consideration can be implemented to ensure that starvation conditions are avoided.
摘要:
A time limit may be determined for energy efficient networking (EEN) sleep intervals based on end-to-end sleep interval limitations. The time limit may be communicated to other network devices which may limit their sleep time. End-to-end sleep interval limitation information may be received via a user input, packet header information, a standardized and/or non-standardized network management protocol, AVB, SRP, RSVP and SNMP. The EEN sleep interval time limit may be determined based on a number of hops between endpoint devices. Packets may be inspected to determine a packet data type and/or end-to-end sleep interval limitation information. The time limit may be determined based on latency requirements of data streams. A time limit for a port may be determined based on sleep time limits for data streams communicated via the port. The time limits may be statically and/or dynamically configured. The network device may be configured via a network management interface.
摘要:
Communication devices may determine routes for packets based on packet marking, routing parameters and/or costs associated with routes. A route may be selected and the packets may be communicated via the selected route. The parameters may comprise service class, real time compression, packet preemption, quality measurements, tier bypass and/or power usage information. The costs may comprise capacity, efficiency and/or performance information for power usage, bandwidth, memory and/or processing. The marking may comprise traffic type, user device capabilities, service class, quality measurements, latency requirements and/or power usage information. Endpoint devices, software applications and/or service providers may insert the marking into packets. Routes may be determined and/or selected based on shortest path bridging, audio video bridging, the marking, the routing parameters and/or the costs. Parameters and/or costs may be received and/or discovered from communication devices. Packets and/or the marking may be parsed and/or inspected. Costs may be based on routing parameters.
摘要:
Aspects of a method and system for network resource allocation based on a usage pattern may comprise a management entity that coordinates operation of one or more endpoint devices. The management entity may be operable to receive a usage pattern associated with each of the one or more endpoint devices. The management entity may be operable to determine resource allocation information for each of the one or more endpoint devices based on the received usage pattern associated with each of the one or more endpoint devices.