Network Bandwidth usage by VM

So we have a server that hosts at home employees. It runs a VMware center monitoring service. Lately it has been coming up saying Network Bandwidth usage by VM changed from Green to Red. Eth0 spikes to over 1000 KB/s. We started to stop the ntpd service and it seemed to help quite a bit but not completely. We still get this alarms and spikes then the quality is terrible during the spikes. Any advice or ideas on where to check? Thanks

Are you trying to track down what’s using bandwidth inside a Linux VM? If so I would install/run ‘iftop’ as that will show you realtime the bandwidth usage.