SRLG Automation

Ensure End-to-End Connectivity Diversity

Highlights

Automated, multilayer, multivendor, multidomain SRLG discovery and SRLG labeling
Updates Packet and TDM/Electrical layers with changes at the Optical/DWDM layer
Manual, user-initiated, or fully automated SRLG propagation to all layers
Deduced hidden SRLG and duct-level SRLG propagation
SRLG Discrepancy report of differences between live network and internal databases

Benefits

Automated, accurate multilayer resiliency without service disruption
Enables you to grow revenue by offering and delivering premium services with strict SLAs
Reduces the amount of overprovisioning needed, lowering CapEx
Reduces OpEx with automated processes and more reliable reroutes

Understanding SRLGs (shared-risk link groups) is critical to reliable service delivery and reducing the need to overprovision the network. Despite this crucial network operation, service providers rely on manual processes to find SRLGs, properly label them, input them into a database, and coordinate all such processes across the network layers and internal teams. This business-as-usual process is highly cost inefficient, resource intensive, and slows down the delivery of services. The high likelihood of errors is problematic since it often results in customer dissatisfaction and lost service revenues. Moreover, without reliable, real-time SRLG data, resiliency schemes often rely on overprovisioning the network, resulting in unnecessary CapEx costs.

Download Solution Brief: SRLG Automation Assuring Diversity and Resiliency

The NetFusion SRLG Automation solution resolves this manual chaos by automating the discovery of SRLG data and the process of labeling SRLGs. First, the NetFusion Intelligence and Automation App Platform automatically discovers the SRLGs throughout all Packet and Transport layers, resulting in comprehensive SRLG information that is multilayer, multivendor, and multidomain. The platform also imports passive SRLGs that are not discoverable, such as patch panels and shared ducts. Using an analysis of historical failure data, hidden SRLGs are deduced.

Next, the NetFusion SRLG Automation App sequentially numbers the discovered SRLGs or uses labels provided by the domain controllers and network elements. It then propagates this information directly to the network devices or to the domain controllers, enabling them to reroute traffic paths to avoid shared risks. NetFusion automatically propagates ongoing network changes across the layers so that the SRLG data adapts to these changes and updated SRLG data is pushed automatically to the network devices and controllers in real time. Once NetFusion propagates the SLRG information, the possibility of a single resource failure, such as a cut fiber or a failed optical port, taking down the network is minimized.

Optionally, the app produces an SRLG Discrepancy report that shows all differences between existing SRLG databases and those that were collected by the platform. If you prefer, you can use this report to initiate a push of SRLG data or manually configure SRLG data on the network elements.