Abstract: A network device has a packet input unit, a checking unit, and a discovery unit. The packet input unit is configured to receive ingress packets. The checking unit is configured to determine whether identifying characteristics of received ingress packets match stored identifying characteristics of a packet flow that is stored in a memory, to perform a network action when the identifying characteristic of the received ingress packet matches the stored identifying characteristic. The discovery unit is configured to intercept an egress packet received from the control plane processor, the egress packet corresponding to the received ingress packet, to determine one or more differences in selected portions of a header portion of the received ingress packet resulting from processing at the control plane processor, and to store in the memory a new network action based on the one or more differences.

Abstract: A network device has counters that are configured to generate for a plurality of byte positions in a specified portion of data packets, a count indicative of a correspondence of a value found at the byte position corresponding to a rule such that occurrences of predetermined byte values in the plurality of byte positions may be counted. A packet classifier is configured to receive from the counters a number of byte values corresponding to the rules and to classify data packets based on the analysis.

Abstract: A network device has a packet input unit, a checking unit, and a discovery unit. The packet input unit is configured to receive ingress packets. The checking unit is configured to determine whether identifying characteristics of received ingress packets match stored identifying characteristics of a packet flow that is stored in a memory, to perform a network action when the identifying characteristic of the received ingress packet matches the stored identifying characteristic. The discovery unit is configured to intercept an egress packet received from the control plane processor, the egress packet corresponding to the received ingress packet, to determine one or more differences in selected portions of a header portion of the received ingress packet resulting from processing at the control plane processor, and to store in the memory a new network action based on the one or more differences.

Abstract: A network device has a packet input unit, a checking unit, and a discovery unit. The packet input unit is configured to receive ingress packets. The checking unit is configured to determine whether identifying characteristics of received ingress packets match stored identifying characteristics of a packet flow that is stored in a memory, to perform a network action when the identifying characteristic of the received ingress packet matches the stored identifying characteristic. The discovery unit is configured to intercept an egress packet received from the control plane processor, the egress packet corresponding to the received ingress packet, to determine one or more differences in selected portions of a header portion of the received ingress packet resulting from processing at the control plane processor, and to store in the memory a new network action based on the one or more differences.

Abstract: A conference mixer includes a unit configured to receive a plurality of input streams, a spectral voice activity detection (VAD) unit configured to, for each of the input streams, generate and output a spectral VAD decision indicating whether a frame including data packets is voice, a turbo VAD unit configured to generate and output a turbo VAD decision that indicates for a frame including data packets which input stream is active, the turbo VAD decision being based on the spectral VAD decisions and a power-based decision indicating whether an estimated instantaneous power level of a frame including data packets is greater than a power threshold, and a finite state machine (FSM) unit configured to select which of the input streams to output as an active stream based on a plurality of the turbo VAD decisions, the turbo VAD decision being based in part on feedback provided by the FSM.

Abstract: A conference mixer includes a unit configured to receive a plurality of input streams, a spectral voice activity detection (VAD) unit configured to, for each of the input streams, generate and output a spectral VAD decision indicating whether a frame including data packets is voice, a turbo VAD unit configured to generate and output a turbo VAD decision that indicates for a frame including data packets which input stream is active, the turbo VAD decision being based on the spectral VAD decisions and a power-based decision indicating whether an estimated instantaneous power level of a frame including data packets is greater than a power threshold, and a finite state machine (FSM) unit configured to select which of the input streams to output as an active stream based on a plurality of the turbo VAD decisions, the turbo VAD decision being based in part on feedback provided by the FSM.

Abstract: A conference mixer includes a unit configured to receive a plurality of input streams, a spectral voice activity detection (VAD) unit configured to, for each of the input streams, generate and output a spectral VAD decision indicating whether a frame including data packets is voice, a turbo VAD unit configured to generate and output a turbo VAD decision that indicates for a frame including data packets which input stream is active, the turbo VAD decision being based on the spectral VAD decisions and a power-based decision indicating whether an estimated instantaneous power level of a frame including data packets is greater than a power threshold, and a finite state machine (FSM) unit configured to select which of the input streams to output as an active stream based on a plurality of the turbo VAD decisions, the turbo VAD decision being based in part on feedback provided by the FSM.

Abstract: A network device has counters that are configured to generate for a plurality of byte positions in a specified portion of data packets, a count indicative of a correspondence of a value found at the byte position corresponding to a rule such that occurrences of predetermined byte values in the plurality of byte positions may be counted. A packet classifier is configured to receive from the counters a number of byte values corresponding to the rules and to classify data packets based on the analysis.

Abstract: A network device has a packet input unit, a checking unit, and a discovery unit. The packet input unit is configured to receive ingress packets. The checking unit is configured to determine whether identifying characteristics of received ingress packets match stored identifying characteristics of a packet flow that is stored in a memory, to perform a network action when the identifying characteristic of the received ingress packet matches the stored identifying characteristic. The discovery unit is configured to intercept an egress packet received from the control plane processor, the egress packet corresponding to the received ingress packet, to determine one or more differences in selected portions of a header portion of the received ingress packet resulting from processing at the control plane processor, and to store in the memory a new network action based on the one or more differences.