Performing an initial full discovery in trial learning mode

To perform an initial full discovery with full topology split in trial learning mode:

1. Configure the Topology Split Manager as follows:

   • Enable topology split

     Set the NumberOfDomains configuration parameter to the number of domains that are specified in the TSM_BASEDIR/smarts/local/conf/discovery/topo-split/ topo-split.conf file. That number must be greater than 1.

     • Select trial learning mode

       Set IsTrialLearningEnabled to TRUE and set the NumberOfTrials configuration parameter to the number of initial (full) topology splits to run. That number must be greater than 1.

     • Select full topology split

       Set the IsSplitFromScratch configuration parameter to TRUE.

2. Create a seed file to seed the Topology Split Manager topology.

   The Topology Split Manager uses the hostnames or IP addresses of the seed devices that are specified in the seed file to discover the devices in the managed IP network. The seed file resides in the TSM_BASEDIR/smarts/local/conf directory. The VMware Smart Assurance IP Manager User Guide includes the procedure for creating seed files.

3. Import the seed file and initiate a full discovery with full topology split.

   “Initiating a discovery” on page 81 describes various methods to import a seed file and initiate a discovery. One method is to go to the TSM_BASEDIR/smarts/bin directory and enter the following command:

                  dmctl -s <TSM name> invoke 
                  
                      ICF_TopologyManager::ICF-TopologyManager importFromFile
                  
                        <seed file name>
   

4. Use the resulting seed files, csv reports, and trial-hook-created reports (if any) to choose an initial topology split. Here are some guidelines for evaluating and choosing the best topology split:

   • A split with a lower imbalance ratio is preferable to a split with a higher imbalance ratio.

     • A split with a lower total proxy percentage is preferable to one with a higher total proxy percentage.

       The true load that a topology puts on a domain depends on other statistics as well.

5. If the results do not fall into your predefined parameters of performance tolerances, set IsSplitFromScratch to TRUE. Then go to the TSM_BASEDIR/smarts/bin directory and enter the following command to create new trial initial topology splits:

                  dmctl -s <TSM name> invoke GA_Driver::TopoSplit-Driver start
               

   After choosing a trial initial topology split, perform the procedure in “Using an initial topology split from trial learning mode” on page 86 to continue with the desired trial result as a starting point.