Analyze the network

Updated: March 10, 2026

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Teaches you how to analyze the network. Instructs you on the necessary steps to perform this task effectively and ensure proper network configuration.

After completing the network design, use this procedure to analyze the network.

Table 1. Feature History
Feature Name	Release Information	Description
Detailed Tooltip for Sites on the Map View	Cisco ONP Release 5.1	The See More Details option has been introduced in the tooltip displayed on hovering over Sites on the Map view of an analyzed network. This option shows the Amplifier data and PSD (Power Spectral Density) profile graph. The See More Details option avoids navigating to the Entity Editor to view these details.

Before you begin

Procedure

Open the network that you want to analyze.
Analyze the network:
1. Choose Network > Analyze.
  
  The analysis progress indicator shows the current analysis status. After successful analysis, the network goes to Analyze Mode.
2. If you see the “Analysis Failed.” message, navigate to the Elements > Messages tab to see the list of error details in the analyzed network.
  
  By default, the system displays only the key messages when the Critical Only toggle button is enabled. If you want to view the entire network message, disable the Critical Only toggle button.
3. Resolve the error and analyze the network again. Continue until you resolve all errors.
Note

You may see the error message 'Unexpected Situation 999' if incorrect property values are entered or changed during network design. Contact Cisco TAC to identify the exact cause of the error. Afterwards, modify the suggested property value so that the network analysis completes successfully.
If you want to view the details such as Amplifier Data and PSD Profile graph for a site in an analyzed network, hover the mouse over a site and click See More Details.

Amplifier data includes output power, EOL gain, attenuator in and out, and Raman gain values. For NCS 1010 sites, the amplifier data does not include attenuator details, and only these sites show the PSD profile graph.

Bottom-up flow and network creation

A bottom-up flow is a network creation approach that

enables incremental, step-by-step building of a network over several days,
allows analysis and report generation at each phase without requiring all services or waves to be configured on the first day, and
provides flexibility in the order of adding network elements such as services and waves.

How bottom-up flows work

Summary

The bottom-up flow process enables gradual, phase-based network creation and analysis, giving users flexibility in building and evaluating their network incrementally.

The key components involved in the process are:

Network administrator: Builds and configures the network in stages.
Network topology: Consists of sites and fibers initially added to form the network’s structure.
Services and waves: Additional network components that can be added over time for increased functionality and connectivity.

Workflow

The process involves the following stages:

On Day 0, the administrator creates the network by adding all sites and fibers to define the topology. They can analyze the network and view reports at this stage without configuring services or waves.
On Day 1, the administrator adds waves between sites (including both previously added and new sites/fibers), then re-analyzes and reviews updated reports.
On Day 2, the administrator adds services and tags the waves created in the previous stage, as well as incorporates additional sites and fibers as needed, with ongoing analysis and reporting.
After the initial topology is created, services or waves can be added in any order, without following a prescribed sequence.

Result

The bottom-up flow process supports flexible, staged network development and ongoing analysis, optimizing the configuration and deployment of Non-SSON networks.

Idle timeout in the Analyze mode

An idle timeout in analyze mode is a session management feature that

logs users out of Cisco ONP if the browser is inactive for a default duration of 15 minutes,
allows system administrators to disable or adjust the timeout through server configuration options, and
affects ongoing network analysis by running it in the background if logout occurs during an active analysis cycle.

Idle timeout settings and session restoration behavior

The default idle timeout in Cisco ONP is 15 minutes. System administrators can disable this timeout by setting the enabled option to false in the configuration file, or adjust the timeout duration by editing the duration option.

If a session times out during an analysis, network analysis continues to run in the background. When the user logs in again:

If the analysis is ongoing, the progress bar appears and no actions are allowed.
If the analysis is complete, the network opens in Analyze mode.
If the analysis failed, the network opens in Design mode and the failure reason can be viewed under Elements > Messages.

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