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About the Failure Simulation Page

The Simulation menu enables you to run various failure scenarios which helps to analyze and evaluate a networks' resiliency.

By default, Paragon Planner simulation mimics the actual hardware. However, you can also adjust simulation parameters for experimentation or to simulate “what-if” scenarios.

You can design a simulation to fail any or all of following network elements:

  • Nodes
  • Links
  • Site
  • SRLG/Facility
  • Parallel Links

The failure simulation scenario is based on the layer mode that you select from the Utility bar in the Topology page (Network > Topology). When you run a failure simulation in Tunnel Layer mode, all demands are ignored. This reduces the simulation run time. When you run a failure simulation in Layer 3 mode, all the demands are included in the simulation.

Planner provides the following failure simulation types:

  • Single—Fails all the network elements of a given type one at a time.
    • Exhaustive Node Failure: Exhaustively fails every single node in the network.
    • Exhaustive Link Failure: Exhaustively fails every single link in the network.
    • Exhaustive Site Failure: Exhaustively fails all sites in the network. A site file is required to define nodes within the same site. Nodes that are not grouped within a site are considered sites by themselves.
    • Exhaustive SRLG/Facility Failure: Fails all facilities in the network. A facility file is required to define node and trunk facility associations.
    • Exhaustive Parallel Links Failure: Exhaustively fails all links between all node pairs.
  • Double or Triple (Multiple):

    For an exhaustive double failure simulation, two elements are failed at once. For example, if you select Node and Link for a Double exhaustive failure, the simulation would then fail all node and node, node and link, and link and link combinations. An exhaustive triple failure fails three elements at once.

Tasks You Can Perform

You can perform the following tasks:

  • Run a new failure simulation. For more information, see Add a Simulation Event.
  • Delete an existing failure simulation—Select the failure simulation and click the Delete (trashcan) icon. On the confirmation message, click Yes. The simulation is removed from this page.
  • From the More list, select More > Detail to view information about existing simulations.
  • Show/Hide Columns—Choose to show or hide a specific column in the table.

    Hover over the More Options (vertical ellipsis) > Show/Hide Columns and select the Column-Name check box of the columns you want to display in the table.

  • Reset Preference—Reset the displayed columns to the default set of columns for each tab in the table.

    Hover over the More Options (vertical ellipsis) and select Reset Preference.

  • Sort Entries—Click the column name to highlight the up and down arrows next to the column name, to sort the table entries in ascending or descending order.