Ping Logger is a FREE utility that allows you to ping up to 4 hosts (PCs or other IP-enabled devices) continuously, to identify slowdowns or breaks in connection on your LAN, WAN, or the Internet.
You can configure it to ping any 4 hosts you like (or fewer if you don’t have that many you need to ping). The software settings allow you to specify how often to ping, and above what threshold (in ms) the ping should be logged to a file. For your convenience, the main screen shows a real-time display of the pinging (in the settings, you choose the last X number of pings to view, up to 2000).