A data processing system. The data processing comprises a data bus subdivided into a plurality of independent data paths and a plurality of system components coupled to the data bus. Each system component monitors each independent data path of the data bus to determine whether that system components is to receive data transmitted via that independent data path. An allocation control circuit coupled to the system components allocates a transmission opportunity spanning multiple bus clock cycles to a first system component such that the first system component is enabled to transmit data via any and all of the independent data paths during the transmission opportunity. The allocation control circuit enables the first system component to begin transmission of data over the data paths at different clock cycles of the transmission opportunity such that the plurality of system components need monitor only one independent data path per bus clock cycle.
A link for transmitting digital information is time-shared between a plurality of units under the control of one of the units called the control unit. The control unit communicates with the other units by means of individually addressed signaling cells enabling it to interrogate each unit regularly as to its current status and its requirements for communication via the link and to advise it of at least one particular frame time slot for sending a response and others for sending cells. The invention also concerns units for implementing this method.
A remote communications server system enables multiple remote users simultaneous access to a network. The system connects a plurality of on-line sessions across multiple communication lines to the network. A unique combination of multiple buses, multiple processors, and a segmented design creates a distributed processing communications system having high throughput without the stability problems associated with gigabit bus speeds. Furthermore, the system supports a mixture of communication links and allows the substitution of one service type for another without affecting the remaining communication links. The system is scalable in that segments can be added as needed and the number of lines handled by a segment can be increased.
A remote communications server system enables multiple remote users simultaneous access to a network. The system connects a plurality of on-line sessions across multiple communication lines to the network. A unique combination of multiple buses, multiple processors, and a segmented design creates a distributed processing communications system having high throughput without the stability problems associated with gigabit bus speeds. Furthermore, the system supports a mixture of communication links and allows the substitution of one service type for another without affecting the remaining communication links. The system is scalable in that segments can be added as needed and the number of lines handled by a segment can be increased.
A remote communications server system enables multiple remote users simultaneous access to a network through a segmented design that distributes the processing of the connections among a combination of buses and processors. The system coordinates a plurality of independent communications links bonded together into a single channel to create a virtual connection to the network having a bandwidth greater than the individual links. The system supports a mixture of physical and multiplexed communication links and allows the intermixing of different types of links in a bonded channel. The system is scalable in that segments can be added as needed and the number of lines handled by a segment can be increased.
A first route is associated with a first channel of two or more channels in a first dense wavelength division multiplex (DWDM) link. A second route is associated with a second channel of the two or more channels in the first dense wavelength division multiplex (DWDM) link. A third route is associated with a third channel of two or more channels in a second dense wavelength division multiplex (DWDM) link. The first route, the second route and the third route provide similar connections. The first DWDM link is different from the second DWDM link. The third route is preselected as an alternate diverse route for a connection through the first route.
