83 results about "Autonegotiation" patented technology

A physical layer device is provided that includes an autonegotiation circuit that negotiates a link with a link partner at first and second link speeds. The physical layer device also includes a cable tester that tests a cable and that determines a cable status of the cable before autonegotiation circuit negotiates the link at the first and second link speeds.

A network interface configures a plurality of physical layer devices and a corresponding plurality of network interface devices to allow for the communication of network data between the physical layer devices and corresponding link partners. At least one of the network interface devices is configured as a master device that communicates management information and autonegotiation results with the physical layer devices, while the other network interface devices do not. A configuration source, such as a central processing unit (CPU) or electronic erasable programmable read only memory (EEPROM), receives the autonegotiation results from the physical layer devices, through the master device, and configures the media access controllers (MACs) of each of the network interface devices in accordance with the autonegotiation results. This forces the MACs into their respective proper configurations even though the network interface devices that are not master devices do not receive the autonegotiation results directly from their corresponding physical layer devices.

The present invention discloses a method and an apparatus for reducing power consumption in a network linking system. The apparatus comprises: a network linking interface device, including a media access controller (MAC), a gigabit physical layer (gigabit PHY), and a connector, through which the network linking interface device is coupled to an Ethernet by a network cable; a driving device, for driving and controlling the network linking interface device; and a load monitoring module, for monitoring the load for the network interface device so as to adjust the link speed according to the load. The method comprises steps of: determining the network linking interface device to be in an autonegotiation mode; performing autonegotiation; obtaining settings of a remote-end network linking interface device; linking at the highest usable link speed; enabling the load monitoring module; adjusting the settings of the network linking interface device according to the load of the network linking interface device; and performing autonegotiation again and linking at a proper link speed.

Auto-discrimination between FC and SATA devices upon insertion of a device into a port of a FAST-compatible switch is disclosed. Without user intervention, the port is able to determine the type of device attached, set the appropriate data rate in the Phy or SERDES and, in the case of FC or SATA drives, start the disk insertion process into the active switch zones. The SERDES is first initialized to FC speeds, and the receive path is searched for a receive signal. Upon detecting a receive signal, the detection circuitry then checks to see if a valid SATA Out Of Band (OOB) sequence is received. If a valid SATA OOB sequence is received, the SERDES is configured for SATA speeds and analog settings. If a valid SATA OOB sequence is not received, and instead a FC auto-negotiation process runs to completion, the SERDES remains at FC speeds.

The invention concerns the establishment of the rate of transmission of data between two network stations by means of auto-negotiation. The execution of an auto-negotiation sequence by a state machine is counted and if the number of executions of the sequence exceeds a threshold, the auto-negotiation sequence is modified to establish a data rate lower than a previously negotiated rate. A particular example is described for use in accordance with IEEE standard 802.3. In a specific example, monitoring of the execution of the auto-negotiation sequence comprises counting the occurrences of a "page received' bit in an auto-negotiation expansion register.

A first network device is provided in communications with a second network device comprising a physical layer device. The physical layer device comprises a transmitter to transmit an autonegotiation signal to the second network device, a receiver to receive a received signal from the second network device, and a controller comprising an autonegotiation controller to set a highest common data rate between the first network device and the second network device. The autonegotiation controller compares the autonegotiation signal and the received signal and selectively prevents the autonegotiation when the autonegotiation signal is the same as the received signal.

An autonegotiation circuit for gigabit per second Ethernet networks includes a switch with 1000BASE-X media. A gigabit interface connector (GBIC) module connects the switch to the device and allows autonegotiation. The switch includes a first GBIC interface with a transmitter and a receiver. The GBIC module includes a second GBIC interface with a transmitter and a receiver and a first copper interface with a transmitter and a receiver. The device includes a second copper interface with a transmitter and a receiver. The GBIC module waits for non-zero configuration ordered sets from the switch. The GBIC module stores configuration information from the switch and then sends FLP bursts to the device. 1000BASE-T autonegotiation is completed and a link is established between the GBIC module and the device. The GBIC module stores second configuration information from the device. Then, the GBIC module completes 1000BASE-X autonegotiation and establishes a link.

The invention discloses an IPSec gateway automatic discovery method in an identifier separation mapping network, belonging to the network technical field. The method comprises the following steps: I) automatic negotiation step: a source IPSec gateway and a destination IPSec gateway automatically exchange information to acquire the configuration information needed in IPSec negotiation, and the security association establishment is finished; II) confidential communication step: the confidential communication is carried out between the source IPSec gateway and the destination IPSec gateway, and the data transmission is finished between a source terminal and a destination terminal; III) automatic clearing step: the security association between the source IPSec gateway and the destination IPSec gateway can be automatically cleared after the above security association is out of data. The method of the invention can ensure that the IPSec gateway in the identifier separation mapping network automatically configures and negotiates the security association, and replaces manually configured manner, thus simplifying the configuration process; and the method of the invention can automatically clear the overdue security association, ensure the stability of the strategic database, and is especially suitable for large-sized network environment.

A physical layer of an Ethernet network device includes first, second, third and fourth terminals. An autonegotiation circuit includes an autonegotiation wait timer having an autonegotiation wait period. An auto-crossover circuit selectively configures the first and second terminals as one of a transmitter and a receiver and the third and fourth terminals as the other of the transmitter and receiver. The auto-crossover circuit includes a sample timer having a sample timer period that has a value that is greater than or equal to the autonegotiation wait period. The auto-crossover circuit includes a random number generator that communicates with the sample timer and generates n random numbers. The sample timer selects one of n sample timer periods based on the generated random number. The n sample timer periods have values that are greater than or equal to the autonegotiation wait period.

A first network device includes a first physical layer device with a first autonegotiation circuit. A bypass timer determines a predetermined period. A second network device includes a second physical layer device. The first network device enables autonegotiation bypass and establishes a link with the second network device after the predetermined period during which a link between the first and second network devices is not up, a receiver of the first physical layer device is in sync, and an ability detect state of the first autonegotiation circuit is true. The first autonegotiation circuit resets the predetermined period of the bypass timer when configuration code groups are received from the second network device. When the first network device receives idle code groups followed by data code groups, the first autonegotiation circuit does not return to an autonegotiation enable state.

A communication system includes a first device and a second device that can advertise multiple capabilities using communication links. A first type of auto-negotiation between the first and second devices is performed using a first communication link between the devices. A second communication link between the devices is used to facilitate a second type of auto-negotiation. For example, the first communication link can include pairs A and B of an IEEE Std. 802.3 four twisted pair cable. The second communication link can include pairs C and D of the cable.

The invention discloses end-to-end break transferring method based on call control, on the TCP layer based on equal network transmission, the receiver loads the dynamic linking library, and it can realize the end-to-end break transferring via the interface of application program, the steps includes: first the transmitter initializes, starts the main line program of monitoring; when one starts transmitting files or one requires the other to transmit files, it enters the transmitting flow, after the transmitting-receiving sides make agreement, the transmitter starts to transmit file, and the transmitting-receiving sides record the start location and the length of file automatically, if one exit in the transmitting course, and then enters the breaking flow, and the breakpoint file is recorded on the log; next time one side requires the file transmission, then enter the anew transmitting flow, until the file is load completely. The invention solves the problems that scope of application of the break transferring function is single, it has extended scope, the break transferring method can be used in any communication mode in IP network to transmit data to solve the data break problems; it can search and negotiates the data source automatically.

A network device includes a media access controller (MAC) and a physical layer device including an interface that communicates with the MAC, and first and second transceivers. A first autonegotiation circuit attempts to establish a first link using the first transceiver over a first medium. A second autonegotiation circuit attempts to establish a second link using the second transceiver over a second medium. A media selector communicates with the interface and the first and second autonegotiation circuits and enables data flow from the first medium to the MAC using the interface when the link over the first medium is established first. When a preferred medium selector prefers the second medium, the media selector monitors the second medium for a qualified energy detect event. When the qualified energy detect event occurs, the media selector allows a link to be established by the second medium.

A physical layer of a first network device is connected to cable of an Ethernet network. A digital signal processor (DSP) is connected to the cable. The DSP receives and decodes first signals on the cable from a second device. The DSP codes and transmits second signals to the second device on the cable. An autonegotiation controller is connected to the DSP and includes a cable detector that determines a first number of pairs of twisted pair wires of the cable that are operable. The autonegotiation controller also includes a speed adjuster that masks an advertised speed of the first device when the cable detector determines that the first number is less than the number required for a requested speed of the first device.

A network probe inserted between two nodes in point-to-point link synchronizes modes of operation between the two nodes. The probe utilizes IEEE 802.3u Clause 28 Auto-Negotiation to detect and advertise corresponding information regarding modes of operation for the nodes between which it is inserted in the point-to-point link, to achieve a highest priority common mode of operation between the nodes.

A network device provided with an Ethernet interface for interconnecting with another network device by auto negotiation, the network device comprising a link establishing function unit compulsorily establishing a link with the other network device and an on / off setting function unit setting the function of the link establishing function unit on or off and the link establishing function unit being comprised of a data transmission suppressing unit for suppressing the transmission of user data to the other network device until the sequence based on the auto negotiation is finished, whereby the problem of connectivity where the sequence of the auto negotiation repeats and no link can be established is solved.

A multiple channel communication system includes a plurality of network communication ports, a plurality of communication devices and an autonegotiation controller. Each communication device is coupled to a respective one of the plurality of network communication ports. The autonegotiation controller is coupled to and shared by the plurality of communication devices.

A communications network includes a management device and a remote device. The remote device includes a physical layer device (PHY) coupled to a link partner. An independent station manager of the remote device provides the bi-directional exchange of management information between the PHY and a serial-to-parallel (S / P) interface connecting the remote device and the management device. A station manager of the management device provides the bi-directional exchange of management information between the S / P interface and a Media Access Controller (MAC) of the management device. The independent station manager and the station manager transmit initiation messages, formatted according to a message template of an Auto-Negotiation (AN) routine of the S / P interface reserved for customization, to reserve an embedded management channel for the transfer of management information. Management information messages, formatted according to a message template of the AN routine, are subsequently exchanged, thereby providing Auto-Negotiation of the PHY.

The present invention is to provide a secure connection mechanism capable of automatically negotiating password between a wireless client terminal and a wireless access terminal, wherein the wireless client terminal is provided with an application software, a control button and an output device. When the wireless client terminal is actuated and the control button is triggered, the secure connection mechanism is enabled by performing the steps of showing a prompt on the output device to instruct user to turn a switch button on the wireless access terminal to a secure connection mode and connecting the wireless client terminal with the wireless access terminal to establish an encryption / decryption mechanism for automatically negotiating a password required for the connection within a predetermined period through the encryption / decryption mechanism in a wireless communication way after being in the secure connection mode.

The invention discloses a method, device, and system for synchronizing port modes between devices. After the interconnecting ports of two devices are interconnected and the interconnecting port of one of the two devices is configured in an interconnection Fabric mode, the method comprises that the device with the interconnecting port configured in the Fabric mode transmits a mode switching request message to an opposite-end device with an interconnecting port configured in an Ethernet mode; and that according to a message sign carried in the mode switching request message, the opposite-end device switches the interconnecting port of the opposite-end device from the Ethernet mode to the Fabric mode and returns the mode switching request message. The method resolves a problem of incapable automatic negotiation between the Ethernet port and the Fabric port of devices and automatically switches the interconnecting port of the device from the Ethernet mode to the Fabric mode so as to achieve normal reception and analysis of Fabric messages and improve convenience for forwarding the Fabric messages.

The invention discloses a method of loading a point-to-point protocol on an elastic grouping ring. A first node on the elastic grouping ring packages the message of the point-to-point protocol to a data field of the protocol message of the elastic grouping ring, and then the type of the message heading is set as specific type, and the protocol message of the elastic grouping ring is sent to a second node. The said second node extracts the message of the point-to-point protocol from the data field of the protocol message of the elastic grouping ring, based on the specific type of the message heading. The invention solves the problem that in existing technique, it is difficult to transmit the message of the point-to-point protocol on the elastic grouping ring net. Each node in the elastic grouping ring net can realize authentication of the identity, automatically consulting the parameter of the link layer, automatically consulting the network parameter and data encrypt and compression by the said message of the point-to-point protocol. The invention also discloses a communication device and a communication system.

A network interface includes a physical layer (PHY) device that provides an interface to a cable. The PHY device includes an autonegotiation module that selectively performs autonegotiation to establish a link with a link partner based on link parameters and a cable test module that performs a cable test before the autonegotiation begins, that determines a cable performance parameter during the cable test, and that compares the cable performance parameter to a predetermined threshold. The autonegotiation module selects at least one of the link parameters based on the comparison.

A system and method for supplying uninterruptible power includes a housing, a power supply input, a power source equipment input, a first powered device output, a second powered device output, an alternative power supply, and a control module. The control module includes a comparator, a switch, a converter and an injector. The injector includes a regulator and power autonegotiation module. The alternative power supply includes a plurality of battery packs in series. There can also be first and second powered devices with uninterrupted power, even when only one of the powered devices breaks. A power is uninterrupted to the first powered device, even if power is stopped to the second powered device, due to a repair or fault of the second powered device.

A network repeater having a plurality of repeater ports selectively establishes links with remote nodes at one of two data rates based on the capabilities of the remote network node and a determined link integrity. A network repeater establishes a link with a network node using auto-negotiation techniques to establish a 100 Mb / s link. The network repeater then monitors the link for symbol errors, and determines an integrity of the link based on a detected number of symbol errors relative to a prescribed threshold. If the detected number of symbol errors reaches the prescribed threshold, indicating poor link integrity due to poor cable connection or condition, faulty network device, etc., the network repeater performs a down shifting operation by breaking the established 100 Mb / s link, and restarting auto-negotiation to establish a 10 Mb / s link. Hence, the network repeater may monitor high-speed links for link integrity, and selectively downshift a link encountering a substantial number of errors to a reduced data rate, without a necessity of a network manager or other remote management function.

A communication system includes a first device and a second device that can advertise multiple capabilities using communication links. A first type of auto-negotiation between the first and second devices is performed using a first communication link between the devices. A second communication link between the devices is used to facilitate a second type of auto-negotiation. For example, the first communication link can include pairs A and B of an IEEE Std. 802.3 four twisted pair cable. The second communication link can include pairs C and D of the cable.

The invention discloses a tracking method and device based on a signaling tracking system, and the signaling tracking system. The method comprises the steps: carrying out the logic correlation of a tracking task of each network element, achieving the cross-network-element and cross-plane tracking, and enabling a user to collect the whole-course information of business processing conveniently; carrying out the correlation of the tracking information of a signaling plane and a data plane, carrying out the correlation of a business signal and printing of a corresponding treatment state machine, carrying out the correlation between a business processing flow and an environment during business processing, gathering the tracking information generated by each network element in a network, enabling a display sequence to be the same as the time sequence during business processing, building correlation between the signaling tracking and the data plane output, printing output of a state machine and system environment during business processing, and enabling a tracking client to easily filter irrelevant information and just display the correlation information of the business; enabling the tracking client to automatically negotiate with each network element, and downloading a decoding library, wherein the upgrading / downgrading of the network elements cannot affect the correctness of decoding.

A link establishing method, a link establishing device and a link partner device are disclosed. A link establishing method performed by a link establishing device may include: exchanging link information on the link establishing device and link information on a link partner device through auto-negotiation messages; determining priority order of available links among a plurality of links connected between the link establishing device and the link partner device using the link information on the link establishing device and the link information on the link partner device; and establishing a link based on a multi-core fiber between the link establishing device and the link partner device on the basis of the priority order.