Use Path Outages to Suppress Notifications

An outage of a central network component can cause a lot of node outages. You can use path outages to suppress notifications based on how nodes depend on each other in the network, as defined by a critical path. The critical path needs to be configured from the network perspective of the monitoring system. By default, the path outage feature is disabled and has to be enabled in poller-configuration.xml.

The following image shows a sample network topology:

02 path outage

From the perspective of the monitoring system, a router named default-gw-01 is on the critical path to reach two networks. If default-gw-01 is down, it is not possible to reach any node in the two networks behind it. In this case, an administrator would like to receive just one notification for default-gw-01; notifications for the other nodes behind it should not be generated. Building this configuration in Horizon requires the following information:

  • Parent Foreign Source: the foreign source where the parent node is defined.

  • Parent Foreign ID: the foreign ID of the parent node this node depends on.

  • IP Interface: the primary IP interface is used as the critical IP.

In this example, we have created all nodes in a requisition named Network-ACME and we use the node label value as the foreign ID:

  1. Click the Gear symbol in the top-right of the screen.

  2. Under Provisioning, click Manage Provisioning Requisitions.

  3. Click Edit beside the requisition that you want to modify.

  4. Click Edit beside the node that you want to modify.

  5. Navigate to the Path Outage tab, and configure the network path using the following parameters:

    Parent Foreign Source Parent Foreign ID Provisioned Node

    not defined

    not defined

    default-gw-01

    Network-ACME

    default-gw-01

    node-01

    Network-ACME

    default-gw-01

    node-02

    Network-ACME

    default-gw-01

    default-gw02

    Network-ACME

    default-gw-02

    node-03

    Network-ACME

    default-gw-02

    node-04

The primary IP interface is selected as the critical IP. In this example, it is important that the IP interface on default-gw-01 in the network 192.168.1.0/24 is set as the primary interface. The IP interface in the network 172.23.42.0/24 on default-gw-02 is also set as a primary interface.