Abstract: In accordance with embodiments of the disclosure, a method may include communicating, via an inter-card communication channel, local link status information regarding at least one local physical port resident on a first network interface, wherein the at least one local physical port is a member port of a link aggregation group, to one or more other network interfaces, other than the first network interface, having member ports of the link aggregation group. The method may also include receiving, via the inter-card communications channel, non-local link status information regarding at least one non-local physical port resident on the one or more other network interfaces, wherein the at least one non-local physical port is a member port of the link aggregation group. The method may further include designating a link status of the at least one local physical port based on the local link status information and the non-local link status information.

Abstract: A method may include monitoring available aggregate bandwidth of a network element and determining if the available aggregate bandwidth is sufficient to communicate traffic at a rate equal to an aggregate sum of committed information rates for a plurality of classes of traffic. If the available aggregate bandwidth is sufficient to communicate traffic at the rate equal to the aggregate sum of committed information rates for a plurality of classes of traffic, traffic may be communicated for each of the plurality of classes in accordance with the respective committed information rate for each class. Otherwise, traffic may be communicated for each of the plurality of classes in an amount proportional to the respective committed information rate for a particular class and the available aggregate bandwidth.

Abstract: A method may include: (i) provisioning a first network-side interface of a first plug-in unit and a second network-side interface of a second plug-in unit as members of a network-side protection group, the first plug-in unit and the second plug-in unit integral to an adaptation layer network element; (ii) provisioning a first client-side interface of the first plug-in unit and a second client-side interface of the second plug-in unit as members of a client-side protection group; (iii) designating one of the first and second network-side interface as an active network-side interface of the network-side protection group; and (iv) designating one of the first second client-side interface as an active client-side interface of the client-side protection group, such that traffic ingressing on the active network-side interface may egress on the active client-side interface and traffic ingressing on the active client-side interface may egress on the active network-side interface.

Abstract: In accordance with a particular embodiment of the present disclosure, a network element may include a network-side interface configured to communicatively couple to a network and a controller communicatively coupled to the network-side interface. The controller may be configured to periodically receive one or more messages indicative of a delay for each of a plurality of paths for a network flow between the network element and a second network element, periodically compare the delays for the plurality of paths, and select a path for a network flow from the plurality of paths based on the delays.

Abstract: In accordance with a particular embodiment of the present disclosure, a network element may include a network-side interface configured to communicatively couple to a network and a controller communicatively coupled to the network-side interface. The controller may be configured to periodically receive one or more messages indicative of a delay for each of a plurality of paths for a network flow between the network element and a second network element, periodically compare the delays for the plurality of paths, and select a path for a network flow from the plurality of paths based on the delays.

Abstract: In accordance with the present disclosure, a method may include receiving a delay measurement message frame at a responder maintenance end point from a controller maintenance end point. The method may further include writing an ingress time value to the delay measurement message frame upon receipt of the delay measurement message at the responder maintenance end point. The method may also include generating a delay measurement response frame based on the delay measurement message frame, the delay measurement response frame comprising an egress timestamp field having a value equal to the difference between a time at which the delay measurement response frame is transmitted from the responder maintenance end point and a time represented by the ingress time value. The method may additionally include transmitting the delay measurement response from the responder maintenance end point to the controller maintenance end point.

Abstract: A method may include provisioning: a first flow from a client-side port to a network-side port of the plug-in unit; a second flow from the network-side port to the client-side port; a third flow from the network-side port to a mate link configured to interface with a fourth flow from the mate link to a second client-side port of the second plug-in unit; a fifth flow from the mate link to the network-side port configured to interface with a sixth flow from the second client-side port to the mate link; a seventh flow from the client-side port to the mate link configured to interface with an eighth flow from the mate link to a second network-side port of the second plug-in unit; and a ninth flow from the mate link to the client-side port configured to interface with a tenth flow from the second network-side port to the mate link.

Abstract: A method for configuring admission control of service instances in a network element may include: (i) reading a pre-determined maximum service-idle utilization of a processor approximately equal to maximum utilization of the processor in the absence of services executing on the processor; (ii) reading, for each particular service instance of a desired configuration of service instances, a pre-determined maximum utilization of the processor associated with the particular service instance; (iii) calculating an aggregate maximum utilization for the desired configuration, based on the pre-determined maximum service-idle utilization and the pre-determined maximum utilizations for each of the particular service instances; (iv) determining whether the aggregate maximum utilization is greater than a threshold maximum utilization for the processor; (v) allowing or denying the desired configuration based on the determination.

Abstract: In accordance with embodiments of the disclosure, a method may include communicating, via an inter-card communication channel, local link status information regarding at least one local physical port resident on a first network interface, wherein the at least one local physical port is a member port of a link aggregation group, to one or more other network interfaces, other than the first network interface, having member ports of the link aggregation group. The method may also include receiving, via the inter-card communications channel, non-local link status information regarding at least one non-local physical port resident on the one or more other network interfaces, wherein the at least one non-local physical port is a member port of the link aggregation group. The method may further include designating a link status of the at least one local physical port based on the local link status information and the non-local link status information.

Abstract: A method may include: (i) provisioning a first network-side interface of a first plug-in unit and a second network-side interface of a second plug-in unit as members of a network-side protection group, the first plug-in unit and the second plug-in unit integral to an adaptation layer network element; (ii) provisioning a first client-side interface of the first plug-in unit and a second client-side interface of the second plug-in unit as members of a client-side protection group; (iii) designating one of the first and second network-side interface as an active network-side interface of the network-side protection group; and (iv) designating one of the first second client-side interface as an active client-side interface of the client-side protection group, such that traffic ingressing on the active network-side interface may egress on the active client-side interface and traffic ingressing on the active client-side interface may egress on the active network-side interface.

Abstract: A method for configuring admission control of service instances in a network element may include: (i) reading a pre-determined maximum service-idle utilization of a processor approximately equal to maximum utilization of the processor in the absence of services executing on the processor; (ii) reading, for each particular service instance of a desired configuration of service instances, a pre-determined maximum utilization of the processor associated with the particular service instance; (iii) calculating an aggregate maximum utilization for the desired configuration, based on the pre-determined maximum service-idle utilization and the pre-determined maximum utilizations for each of the particular service instances; (iv) determining whether the aggregate maximum utilization is greater than a threshold maximum utilization for the processor; (v) allowing or denying the desired configuration based on the determination.

Abstract: A method may include provisioning: a first flow from a client-side port to a network-side port of the plug-in unit; a second flow from the network-side port to the client-side port; a third flow from the network-side port to a mate link configured to interface with a fourth flow from the mate link to a second client-side port of the second plug-in unit; a fifth flow from the mate link to the network-side port configured to interface with a sixth flow from the second client-side port to the mate link; a seventh flow from the client-side port to the mate link configured to interface with an eighth flow from the mate link to a second network-side port of the second plug-in unit; and a ninth flow from the mate link to the client-side port configured to interface with a tenth flow from the second network-side port to the mate link.

Abstract: A method may include monitoring available aggregate bandwidth of a network element and determining if the available aggregate bandwidth is sufficient to communicate traffic at a rate equal to an aggregate sum of committed information rates for a plurality of classes of traffic. If the available aggregate bandwidth is sufficient to communicate traffic at the rate equal to the aggregate sum of committed information rates for a plurality of classes of traffic, traffic may be communicated for each of the plurality of classes in accordance with the respective committed information rate for each class. Otherwise, traffic may be communicated for each of the plurality of classes in an amount proportional to the respective committed information rate for a particular class and the available aggregate bandwidth.

Abstract: A networking node for interconnecting a local telephone switch such as a private branch exchange (PBX) with other such switches through other nodes, with respective internodal multichannel digital transmission links interconnecting the various nodes, provides service for both data and voice messages. The networking node provides at least two levels (one of which may be zero) of compression for voice messages and permits one of those levels to be preselected for all voice messages from the switch with which the node is associated to a predetermined one or more of the other nodes in the network. A look-up table is stored in memory within the node to control the assignment of particular levels of compression to particular destinations.

Abstract: A digital signal processing unit with an array of digital signal processors (DSP) is provided with a recirculation path for data sequences which cannot be fully processed by a single pass through the array. An input programmable gate array (PGA) controls distribution of data sequences to individual DSPs for processing and an output PGA controls their recollection. The recirculation path is provided by a recirculation register which is write enabled by the output PGA and read enabled by the input PGA.