A switch module and optoelectronic switch incorporating the same. The optoelectronic switch includes an N-dimensional array of switch modules arranged in a topology in which each switch module is a member of N sub-arrays, the sub-arrays defined with reference to the coordinates of the constituent switch modules, and wherein all of the members of each sub-array are connected by an active switch, which in some embodiments may be an optical active switch or an electronic active switch.

An optoelectronic switch for transferring a signal from an input device for an output device, the optoelectronic switch including: a plurality of leaf switches, each having a radix R, and arranged in an L-dimensional array, in which the i-th dimension has a size R.sub.L where (i=1, 2, . . . , L) and for a reduced dimension, R.sub.L is less than for all of the other dimensions, each leaf switch having an associated L-tuple of coordinates (x.sub.1, . . . , x.sub.L) giving its location with respect to each of the L dimensions; wherein each leaf switch is a member of L sub-arrays, each of the L sub-arrays associated with a different one of the L dimensions, and including: a plurality of R.sub.L leaf switches whose coordinates differ only in respect of the i-th dimension, each leaf switch having C client ports for connecting to an input device or an output device.

The present document provides a method and apparatus for processing abnormal uplink data, herein, the method includes: a first time wavelength division multiplexing TWDM channel terminal in a TWDM passive optical network PON detecting abnormal uplink data; the first TWDM channel terminal sending uplink data abnormality information to other TWDM channel terminals in the TWDM PON, herein the uplink data abnormality information is used for the other TWDM channel terminals detecting whether uplink data sent by an optical network unit ONU managed by the other TWDM channel terminals are abnormal, and processing the ONU sending the abnormal uplink data when the abnormality is detected, solves the problem that an ONU sends data on a wrong uplink wavelength channel to cause uplink data interference on the uplink wavelength channel, and further achieves the effect of rapidly locating the ONU using the wrong uplink wavelength for communication.

A number of users interface with a network via a multiplex module, on a communication path established between the multiplex module and a point of presence. Some users may be served by one or more first channels of the communication path while one or more remaining users may be served by one or more additional channels of the communication path. Users having a basic service level agreement may be served by the first channels while users having an extended service level agreement may be served by the one or more additional channels. Allocation of users to distinct channel types based on their service level agreements may apply at a primary point of presence or may apply at a redundant point of presence.

Embodiments of the present invention provide a data processing method, a communications board and a device. The method includes: acquiring, by a first communications board, an optical channel data unit ODU data flow; performing, by the first communications board, slicing processing on the ODU data flow according to a fixed frame frequency, so as to obtain various slices, where each slice includes a section of continuous ODU data in the ODU data flow; separately encapsulating, by the first communications board, each slice into an Ethernet frame; and sending, by the first communications board, each Ethernet frame to a time division multiplexing TDM service switching module in an Ethernet switching chip, so that the TDM service switching module sends each Ethernet frame to a second communications board to which a destination MAC address carried in the Ethernet frame directs.

A method and network include receiving a Time Division Multiplexing (TDM) connection; determining information in overhead of the TDM connection; and if match/action rules defined by controller exist for the TDM connection, establishing the TDM connection based on matching an associated rule in the match/action rules. A Software Defined Networking (SDN) controller is configured to receive a request from a node related to a new TDM connection in the network; determine one or more routes in the network for the new TDM connection; determine match/action rules for the one or more routes at associated nodes of the one or more nodes; if the one or more routes include at least two routes, determine a group table at associated nodes of the one or more nodes to distinguish between the at least two routes; and provide the match/action rules and the group table to the associated nodes.

In one embodiment, method of photonic packet switching includes receiving, by a photonic switching fabric from a first top-of-rack (TOR) switch, a destination port request corresponding to a first photonic packet and a first period of time, where the destination port request includes a first output port and determining whether the first output port is available during the first period of time. The method also includes receiving, by the photonic switching fabric from the first TOR switch, the first photonic packet and routing the first photonic packet to the first output port when the first output port is available during the first period of time. Additionally, the method includes routing the first photonic packet to an alternative output port when the first output port is not available.

A spectral-temporal connector interconnects a large number of nodes in a full-mesh structure. Each node connects to the spectral-temporal connector through a dual link. Signals occupying multiple spectral bands carried by a link from a node are de-multiplexed into separate spectral bands individually directed to different connector modules. Each connector module has a set temporal rotators and a set of spectral multiplexers. A temporal rotator cyclically distributes segments of each signal at each inlet of the rotator to each outlet of the rotator. Each spectral multiplexer combines signals occupying different spectral bands at outlets of the set of temporal rotators onto a respective output link. Several arrangements for time-aligning all the nodes to the connector modules are disclosed.

A number of users interface with a network via a multiplex module, on a communication path established between the multiplex module and a point of presence. Some users may be served by one or more first channels of the communication path while one or more remaining users may be served by one or more additional channels of the communication path. Users having a basic service level agreement may be served by the first channels while users having an extended service level agreement may be served by the one or more additional channels. Allocation of users to distinct channel types based on their service level agreements may apply at a primary point of presence or may apply at a redundant point of presence.

An L-dimensional optoelectronic switch for transferring an optical signal from an input device to an output device, the optoelectronic switch includes: a plurality of leaf switches, each having a radix R, and arranged in an L-dimensional array, in which each dimension has a respective size R, (1=1, 2, . . . , L), each leaf switch having an associated L-tuple of co-ordinates (x.sub.1, . . . , x.sub.L) giving its location with respect to each of the L dimensions; wherein each leaf switch is a member of L sub-arrays, each of the L sub-arrays associated with a different one of the L dimensions, and including: a plurality of R.sub.i leaf switches, whose co-ordinates differ only in respect of the i.sup.th dimension, each leaf switch having C client ports for connecting to an input device or an output device, and F fabric ports for connecting to spine switches; a plurality of S.sub.i spine switches, each having R fabric ports for connecting to the fabric ports of the leaf switches, and wherein, in a given sub-array each leaf switch in the sub-array is connected to each spine switch via an optical active switch.