This section describes node failure analysis. Node failure analysis involves steps of failing a node and detecting the impact on the services that are owing through the failed node. The following steps describe the node failure analysis for a network which is selected by a user:
Upload a topology as an excel file with the following sheets:
To do node failure analysis, click on Analysis option menu and select Node Failure Analysis, a form will be opened.
Select the RWA result from the drop-down list.
Select the service from the drop-down service list and click on Submit.
There are two kinds in selecting the services:
- Service which does not have disjoint service
- Service which has disjoint service
Node failure analysis for a service without disjoint service
This section describes node failure analysis for a service without disjoint services. Following are the steps:
Select the service from the drop-down service list and click on Submit.
Planning tool will create an animation to trace the work path for the selected service using a green color circular marker as shown in figure.
Select the node which is to be disabled by clicking left mouse button on the node. Upon selection the node will have red bounding box signifying that the node is out of order or has failed.
Click on Run button which is available at the top-right corner to view the restoration path on canvas and pop up will appear to show the affected services as shown in Figure.
Click on Reset button which is available at the top-right corner to clear.
Node failure analysis for a service with disjoint service
This section describes node failure analysis for a service that has a condition to be disjoint with the different services. Following are the steps:
For the same RWA result, we shall perform one more node failure analysis. This time we will select a service that has condition to be disjoint with another service.
Select the service from the drop-down list and also select disjoint service with respect to the service from the drop-down list. In this example, Node0=Node3:S1 service being selected and Node0=Node3:S2 is disjoint service with respect to S1 service is being selected.
Disjoint service will appear in the Select Disjoint Service box. Click on the disjoint service i.e., Node0=Node3:S2 being highlighted with a color as shown in figure in multi select widget.
Click on Submit.
Note: If a service is disjoint with many other services then multi select widget will allow to select multiple services
Planning tool will create an animation to trace the work path for the selected service and disjoint service is shown using a green color circular marker as shown in below figure.
Planning tool will create an animation to trace the work path of all disjoint services is shown using dark green, yellow and blue color circular markers respectively. Maximum four colors are supported green, dark green, yellow and blue color.
Select the node which is to be disabled by clicking left mouse button on the node. Upon selection, the node will have red bounding box signifying that the node is out of order or has failed.
Click on Run button which is available at the top-right corner to view the restoration path on canvas and pop up will appear to show the affected services.
Click on Reset button which is available at the top-right corner to clear.
