Scan Network

WARNING: 'Scan Network' is an option that should be used with great care. While it can improve the VisualRoute analysis, high security sites may think that you are attacking their network.

If the host you are monitoring does not respond, is the network to that host down, or is the host itself down? With 'Scan Network' checked, VisualRoute can answer this question.

Scan network first determines which class C network the host in question resides in. It then sends ping packets to all possible IP addresses for the network, looking for any host that is up and running.

For example, let's say you are trying to monitor www.yahoo.com and it is not responding. With 'Scan Network' checked, VisualRoute determines that the network for www.yahoo.com is 204.71.200.x.

It then sends ping packets to hosts .x+1, .x-1, .x+2, .x-2, and so on for all hosts on network 204.71.200.x. The scan stops the moment there is any response, which indicates that the network to www.yahoo.com is up.