Specifying The Track's Probes - HP 7102dl - ProCurve Secure Router Configuration Manual

For a track that monitors the route to one of the subnets at your company's
branch office in Grenoble, you might enter:
ProCurve(config)# track Grenoble2
In either case, you move into the network monitor track configuration mode
context, and the prompt reflects this change:
ProCurve(config-track-MyWebServer)#
You can configure multiple tracks, even in the hundreds. Practically, however,
you would not want your router to run this many active tracks and probes.

Specifying the Track's Probes

A track can use either one or two probes to monitor the network. Reasons to
specify two probes include:
The track is monitoring the route to a network that includes two possible
default gateways.
You want the track to monitor more than one vital remote network server.
You want the track to monitor the performance of a remote network
server in more than one way. For example, one probe might simply test
connectivity to the server, while the second probe might verify that the
server returns responses in a timely manner.
When you specify one probe only, the track will fail when that probe fails.
When you specify two probes, you can configure the track to pass when one
of its probes passes or to pass only when both probes pass.
In the first example listed above (monitoring a network with two possible
gateways), you would configure the track to pass when either probe passes:
the track should not remove a route that it is still valid.
In the second case—monitoring two vital services—you would set the track
to pass only if both necessary services are available.
If you were using a track only to log changes in performance, you would
probably set the track to pass only when both probes pass. In that way, you
are alerted whenever a problem occurs with a network service.
Network Monitoring
Configuring Network Monitoring
9-27