An apparatus for operating a low data-rate (LDR) link and legacy switch at a high data-rate (HDR) includes a first block and a second block. The first block receives input signals from the legacy switch and generates identical output signals. The second block receives the identical output signals and generates an HDR signal for communication over the LDR link coupled to an access point. Further, a media access control (MAC) interface communicates data at a first data rate with an Ethernet PHY block including a first-in-first-out (FIFO) module and a buffer. The FIFO receives data from the MAC interface at the first data rate and transmits data at a second data rate. The buffer receives data from the Ethernet port at the second data rate and transmits the received data at the first data rate in response to detection of an end of packet.

A flexible Ethernet (FlexE) frame forwarding method, including receiving a first frame through a FlexE client input channel, obtaining a first channel identifier used to indicate the FlexE client input channel and a first subchannel identifier carried in the first frame, where the first subchannel identifier is used to indicate a logical subchannel of the FlexE client input channel, searching a preset forwarding table based on the first channel identifier and the first subchannel identifier to obtain a second channel identifier and a second subchannel identifier, where the second channel identifier is used to indicate a FlexE client output channel, and the second subchannel identifier is used to indicate a logical subchannel of the FlexE client output channel, and forwarding the first frame based on the second channel identifier and the second subchannel identifier.

A C-RAN includes a plurality of remote units; a central unit communicatively coupled to the remote units via a fronthaul network; and an entity coupled to the fronthaul network configured to perform deep packet inspection. The central unit is configured to determine sets of data to be sent to respective subsets of remote units across the fronthaul network and determine a mapping of each of the sets of data to a respective one of the subsets of remote units. The central unit is also configured to add a respective indicator, based on the mapping, to packets for each set of data, wherein each respective indicator indicates each remote unit that the respective packet and set of data is intended for. The central unit is also configured to transmit the packets for the sets of data, each with the respective indicator, to the entity over the fronthaul network.

A data distribution method, a data aggregation method, and related apparatuses are disclosed. The data distribution method may include: receiving a first packet stream; dividing the first packet stream to obtain a first data block stream; sending the first data block stream to a first circuit; processing, by the first circuit, the first data block stream to obtain a first data stream; distributing, by the first circuit, the first data stream to N1 second circuits of M second circuits in a PT-W, where M is greater than N1, N1 is a positive integer, and M is a positive integer; and processing, by the N1 second circuits, the received first data stream to obtain N1 first code streams. The technical solutions provided by the embodiments of the present application help to meet a requirement for complex bandwidth configuration and extend an application scenario.

A bidirectional out-of-band management (OOBM) dongle comprises a serial port for receiving console traffic from a console port of a managed switch and an Ethernet port for receiving management port traffic from a management port of the managed switch. In operation, the OOBM dongle multiplexes, via an optional adapter, the console traffic and the management port traffic and generates Ethernet traffic that is then communicated, via an OOBM port on the dongle, to an OOBM switch port of an OOBM switch that acts as a power sourcing device for the OOBM dongle.

Rapid channel failure detection and recovery in wireless communication networks is needed in order to meet, among other things, carrier class Ethernet channel standards. Thus, resilient wireless packet communications is provided using a physical layer link aggregation protocol with a hardware-assisted rapid channel failure detection algorithm and load balancing, preferably in combination. This functionality may be implemented in a Gigabit Ethernet data access card with an engine configured accordingly. In networks with various topologies, these features may be provided in combination with their existing protocols.

A C-RAN includes a plurality of remote units; a central unit communicatively coupled to the remote units via a fronthaul network; and an entity coupled to the fronthaul network configured to perform deep packet inspection. The central unit is configured to determine sets of data to be sent to respective subsets of remote units across the fronthaul network and determine a mapping of each of the sets of data to a respective one of the subsets of remote units. The central unit is also configured to add a respective indicator, based on the mapping, to packets for each set of data, wherein each respective indicator indicates each remote unit that the respective packet and set of data is intended for. The central unit is also configured to transmit the packets for the sets of data, each with the respective indicator, to the entity over the fronthaul network.

In one embodiment, an apparatus includes n electrical communication channels, m optical communication media interfaces, and a plurality of muxes. The plurality of muxes are configured to receive an information stream. The information stream is carried over the n electrical communication channels and the m optical communication media interfaces. The plurality of muxes are further configured to transform the information stream from v virtual lanes. Each virtual lane includes a plurality of data blocks from the information stream and an alignment block, wherein v is a positive integer multiple of the least common multiple of m and n, v is greater than n, and n is equal to m.

Example methods and apparatus for processing a bit block stream are described. One example method includes obtaining a first to-be-processed bit block stream and mapping the first to-be-processed bit block stream into at least two slot bit block streams. The at least two slot bit block streams include a first slot bit block stream and a second slot bit block stream. The first slot bit block stream includes a first boundary bit block and a second boundary bit block. The second slot bit block stream includes a third boundary bit block and a fourth boundary bit block. N first bit blocks exist between the first boundary bit block and the second boundary bit block. N first bit blocks exist between the third boundary bit block and the fourth boundary bit block. The first bit block is a non-idle bit block.

Embodiments described herein provide a method for providing a compatible backplane operation mechanism for 2.5-gigabit Ethernet. A first input of data including a first sequence-ordered set in compliance with a first interface protocol is received from a medium access control (MAC) layer. The first input of data is encoded into four outputs of encoded data including a second sequence-ordered set in compliance with a second interface protocol. The first sequence-ordered set in a first form of a sequence code followed by three bytes of data is mapped to the second sequence-ordered set in a second form of consecutive units of the sequence code followed by an encoded data byte. The four parallel outputs of encoded data are serialized into a serial output. The serial output to a linking partner is transmitted on a physical layer of an Ethernet link at a speed specified in the second interface protocol.