IntraVUE is a Local Area Network monitoring tool, not a Wide Area Network monitoring tool.
"Scan Local, View Remote" is the best rule.
The IntraVUE host should always be connected to a (layer 2) managed switch!
IntraVUE should be placed local to the end devices it is expected to monitor and then users
can browse from remote locations to see what is happening.
Within the placement of local devices, the IntraVUE host should be connected to the switch
that is closest to the router leading to other subnets.
An extreme example would be a corporation that had several remote sites with Ethernet devices
to be monitored.
Best case: There should be an IntraVUE host installed at each remote site. The remote sites can be viewed as one using the IntraVUE Supervisory Station.
Good case: There should be an IntraVUE host installed at each remote site. The remote sites can be viewed individually..
Bad case: A single IntraVUE host at the central location monitors the remote sites throught firewalls, routers, VPNs, or ...
A short video is available which covers IntraVUE Placement and Installation.