Abstract: A network device includes at least one processor, a storage device and at least one memory including computer program code. The at least one memory and the computer program code are configured to, with the at least one processor, cause the network device to: write data to the storage device; replicate the data at one or more remote network devices via at least one deterministic transmission medium; and output an acknowledgement in response to determining that the data has been written to the storage device prior to receiving confirmation of successful replication of the data at the one or more remote network devices. The methods, systems or computer readable mediums leverage the deterministic and measurable nature of the transmission media to reduce the Recover Point Objective durations.

Abstract: A network device includes at least one processor, a storage device and at least one memory including computer program code. The at least one memory and the computer program code are configured to, with the at least one processor, cause the network device to: write data to the storage device; replicate the data at one or more remote network devices via at least one deterministic transmission medium; and output an acknowledgement in response to determining that the data has been written to the storage device prior to receiving confirmation of successful replication of the data at the one or more remote network devices. The methods, systems or computer readable mediums leverage the deterministic and measurable nature of the transmission media to reduce the Recover Point Objective durations.

Abstract: The present disclosure discloses infrastructure resource states which may be configured for use in managing both infrastructure resources (IRs) and virtualized infrastructure resources (VIRs). The new resources states may include a Network Unequipped (NU) state, a Network Equipped (NE) state, a Network Ready (NR) state, a Service Ready (SR) state, an Out-of-Service (OOS) state, and an In-Service (IS) state. The infrastructure resource states may be configured to enable resource transfers in a programmable virtual infrastructure having one or more tenants (e.g., Owners, BUs, Partners, Customers, or the like) at one or more hierarchical layers.

Abstract: The present disclosure discloses infrastructure resource states which may be configured for use in managing both infrastructure resources (IRs) and virtualized infrastructure resources (VIRs). The new resources states may include a Network Unequipped (NU) state, a Network Equipped (NE) state, a Network Ready (NR) state, a Service Ready (SR) state, an Out-of-Service (OOS) state, and an In-Service (IS) state. The infrastructure resource states may be configured to enable resource transfers in a programmable virtual infrastructure having one or more tenants (e.g., Owners, BUs, Partners, Customers, or the like) at one or more hierarchical layers.

Abstract: This invention provides a method for commissioning and upgrading an optical ring network using its internal amplifiers as Automatic Spontaneous Emission sources of light that are used in making measurements. A modular segmented approach is adopted and the network is commissioned segment by segment. A flexible method is used for upgrading a commissioned network by adding or deleting a node or changing the internal configuration of a node. The method uses techniques for the correction of the Optical Signal to Noise Ratio induced error as well as the Spectral Filtering Error during the loss computation required for adjusting the gains of the amplifiers at each network node to an appropriate value. Since the method does not require an external laser source that needs to be moved manually from node to node it greatly reduces the commissioning time. Since it uses only the components of the network itself and does not deploy any additional device it also leads to a significant saving in cost.

Abstract: Optical communication networks often incorporate fiber rings or fiber mesh topologies for interconnecting its nodes. Both of these topologies can contain closed optical loops at one or more wavelengths within the optical spectrum. In amplified optical systems, the inherent loss of these optical loops is counteracted by the amplifier gain. Thus, the optical loop may have a net loss that is too low to prevent excessive noise buildup resulting in a lasing fiber loop. The noise that builds up within such amplified systems is dominated by the Amplified Spontaneous Emission (ASE) noise resulting in ASE loops. Such loops can have a serious impact on all wavelengths carried by the fiber and lead to a partial or complete loss of end to end communication due to a severe degradation in signal to noise ratio. This invention provides an effective method and system for avoiding ASE loops in optical communication networks.