White Papers - Open NerveCenter: Downstream Alarm Suppression - Testing the Model - Identifying Parent-Child Relationships -
Previous: Importing the New Model     Next: Making the Relationship Information Available to NerveCenter

Identifying Parent-Child Relationships

You can let OVPA extract relationship information from HP OpenView or TME 10 NetView and either store it in the NerveCenter database or in a text file. You can also create the text file manually.

---

Note    By default, OVPA does not get information about a node's parents from your network management platform. You must configure OVPA to collect that information by doing the following steps.

---

 
  To identify parent-child relationships using OVPA:

1. Make sure HP OpenView or TME 10 NetView is running. Also make sure the NerveCenter Server is running.
2. Make sure that your network management platform is set up as your node source in the NerveCenter Administrator.
3. If OVPA is running, stop it by typing ovstop ovpa at the command line.
4. Start OVPA in parenting mode from the command line by typing one of the following commands:
   • ovpa -pc

     OVPA runs and computes parenting information.

   • ovpa -pc_noupdate

     OVPA starts and computes parenting information only on starting and when NerveCenter does a full resync.

   • ovpa -pc hostname

     hostname is the name of the machine on which the NerveCenter Server runs. OVPA computes the parenting information, writes it to a file named hostname_PC.dat, and then stops.

 
  To identify parent-child relationships manually:

1. Open a new text file.
2. Include a line for each node that has parents. Use the following syntax:
       child parent

   where child is the name of the node and parent is the name of each node on which the child is dependent. If you have more than one parent, separate parents by typing a space between each one.

   ---

   Note    If NerveCenter uses a full domain name for the node, use the full name in this file to refer to that node.

   ---

   For example, if nodeA is dependent on nodeB.domain.com and nodeC, and nodeB.domain.com is dependent on nodeD, then the contents of the text file would look like this:

   
       nodeA nodeB.domain.com nodeC
    nodeB.domain.com nodeD
3. Save and close the file.