Collecting History for the RTR Probe

RTR can collect data samples for a given probe. These samples are referred to as history data. When RTR collects history, it refers to tests. A test is the lifetime of a probe operation.

You can set the maximum number of entries in the history table for each RTR probe using the samples-of-history-kept command.

This command enables you to control the number of samples saved in the history table. If you set the number of samples to 0, no samples are kept.

Note: You cannot set this characteristic until you have set the probe type using the type command. The default values of this characteristic depend on the type of the entry.

Best Practice: Collect history only when there is a problem in your network because collecting history increases memory usage.

To set the maximum number of entries in the history table for each RTR probe:

• Issue the samples-of-history-kept command in RTR Configuration mode.
  host1(config-rtr)#samples-of-history-kept 5

  Use the no version to set the default: 16 hops for pathEcho type and 1 hop for echo type.