Packet loss is the situation when one or more packets (small pieces of data) do not make it to the targeted destination.
Usually, packet loss results from loss of network connectivity, disruptions in the network, or slower network services. Packet loss is usually described as a percentage; for example, 1% packet loss means that you sent 100 packets but only 99 reach the destination. Generally, a packet loss of 1-2.5% is acceptable.
100% packet loss is a situation where packets sent by the user is not sent to the destination resulting in no response from the server.
For example, if you were to send 200 packets but only 170 reached the destination, that would be 30% packet loss. In the case of 100% packet loss, all 200 packets would be lost. As a result, there is no response from the server we sent packets to.
One of the typical causes of 100% packet loss is network congestion where an overcrowded network cannot handle all the requests being sent through.
Due to our network design, traceroute diagnostics between Droplets may display 100% packet loss during the last two hops.