Abstract: A method for processing data in an Ethernet protocol stack is disclosed. The method includes receiving client data for transmission via an Ethernet bus, and selectively transmitting the client data over the Ethernet bus by one of packet switching or non-packet-switching transmission based on an identity of the originating client device.

Abstract: The present disclosure generally discloses a longest queue identification mechanism. The longest queue identification mechanism, for a set of queues of a buffer, may be configured to identify the longest queue of the set of queues and determine a length of the longest queue of the set of queues. The longest queue identification mechanism may be configured to identify the longest queue of the set of queues using only two variables including a longest queue identifier (LQID) variable for the identity of the longest queue and a longest queue length (LQL) variable for the length of the longest queue. It is noted that the identity of the longest queue of the set of queues may be an estimate of the identity of the longest queue and, similarly, that the length of the longest queue of the set of queues may be an estimate of the length of the longest queue.

Abstract: A method for controlling buffering of packets in a communication network includes storing packets of one or more packet flows in a queue of a buffer, to set a threshold on the queue, and determining whether the queue exceeds the threshold. If the queue exceeds the threshold, a congestion notification on a first packet of the queue causing the exceeding of the threshold is provided and a timeout interval is started. Until expiry of the timeout interval, any threshold violation is ignored by not providing a congestion notification on further packets of the queue causing the exceeding of the threshold during the timeout interval.

Abstract: In one embodiment, the network node receives a packet traffic aggregated from one or more concurrent application streams in a packet switched network. A number of the one or more concurrent application streams is estimated as a granularity of the packet traffic. A drop probability Pd is calculated based on the estimated granularity and the current traffic load of the network node. The calculated drop probability Pd is provided for a congestion control.

Abstract: The invention concerns a method of routing a packet in a packet switching network, and a corresponding router (50). A new or an obsolete entry in a routing table is detected. A timer is started. A packet filter is configured having a pass probability which is an increasing or decreasing function of the timer whereby said function is increasing if the detected entry is a new entry and decreasing if the detected entry is an obsolete entry. An incoming packet which matches the detected entry is detected. The detected packet is filtered with the packet filter. If the detected packet passes the packet filter, the detected packet is routed in accordance with the detected entry. If the detected packet does not pass the packet filter, the detected packet is routed in accordance with another entry of the routing table.

Abstract: In one embodiment, the network node receives a packet traffic aggregated from one or more concurrent application streams in a packet switched network. A number of the one or more concurrent application streams is estimated as a granularity of the packet traffic. A drop probability Pd is calculated based on the estimated granularity and the current traffic load of the network node. The calculated drop probability Pd is provided for a congestion control.

Abstract: The invention concerns a method of routing a packet in a packet switching network, and a corresponding router (50). A new or an obsolete entry in a routing table is detected. A timer is started. A packet filter is configured having a pass probability which is an increasing or decreasing function of the timer whereby said function is increasing if the detected entry is a new entry and decreasing if the detected entry is an obsolete entry. An incoming packet which matches the detected entry is detected. The detected packet is filtered with the packet filter. If the detected packet passes the packet filter, the detected packet is routed in accordance with the detected entry. If the detected packet does not pass the packet filter, the detected packet is routed in accordance with another entry of the routing table.

Abstract: The invention relates to a method for transmitting one or more client signals via a packet transport network. According to the method, packets of the one or more client signals are received at an ingress node of the network. Timing information characterizing the timing of the received packets is determined and the received packets are mapped into a container. The container and the timing information are transmitted via the network. At an egress node of the network, the packets are extracted from the container and the packets are timed for further transmission based on the transmitted timing information.

Abstract: The invention relates to a method for transmitting one or more client signals via a packet transport network. According to the method, packets of the one or more client signals are received at an ingress node of the network. Timing information characterizing the timing of the received packets is determined and the received packets are mapped into a container. The container and the timing information are transmitted via the network. At an egress node of the network, the packets are extracted from the container and the packets are timed for further transmission based on the transmitted timing information.

Abstract: A transmitter (11) emits a single wavelength optical signal and transmits this as a wavelength channel (13) in a compound multiplex signal through the WDM network. The receiver (12) selects the single wavelength optical signal (21) from the compound multiplex signal using a band-pass filter. A wavelength fit detector (15) determines a feedback signal by correlating variations of the amplitude of the received signal with variations of the traffic density. This feedback signal is then returned to the transmitter (11) via a back channel (16) and serves to tune the wavelength of the single wavelength optical signal.

Abstract: A Laser device for optical packet data transmission in TDM-systems is provided. The device comprises a laser light source for outputting laser light beam and a laser driver for driving the laser light source; an optical modulator which receives and modulates the laser light beam output by the laser light source; a packet data source for outputting a packet data stream; and a modulator driver for receiving the packet data stream output by the packet data source and for driving the optical modulator in response to the packet data stream resulting in that the optical modulator modulates the laser light beam in response to the packet data stream. A filter generates an envelope signal of the data packets in the packet data stream, and a switch switches the laser driver in response to the envelope signal.

Abstract: The invention relates to a method for monitoring an optical transmission line of an optical data network, wherein light is sent into the optical transmission line at a line input, and backscattered light of said light is detected at said line input and analysed, wherein during normal operation of said optical network, burst mode optical signals carrying a digital payload are sent onto the optical transmission line at the line input, and the backscattered light of said burst mode optical signals is detected at said line input and analysed. The inventive method is simple and cost-effective.

Abstract: The present invention relates to a method for transmitting packets comprising a synchronization part (sync?) and a payload part (dat1, dat2), wherein the transmission format comprises a shortened synchronization part (syn?) and the payload part is split into a first data sequence (dat1), encoded in the first encoding, followed by the second data sequence (dat2), encoded in the second encoding, comprising the steps of encoding and sending the first data sequence (dat1) in the first encoding, encoding and sending the second data sequence (dat2) in the second encoding, on the sender side and receiving and decoding the first data sequence (dat1) in the first encoding, detecting the end of the first data sequence and adapting the receiver's decoder, receiving and decoding the second data sequence (dat2) in the second encoding on the receiver side. The invention further relates to a sender, a receiver, an optical network element, and a serialized packet format.