Uptimeify

ICMP / Ping

ICMP (Internet Control Message Protocol) is the network protocol behind "ping", a simple echo request used to check whether a host is reachable and how long it takes to respond.

A ping monitor sends ICMP echo requests to a server or device and measures reachability, round-trip latency, and packet loss. It is the most basic liveness check for servers, routers, and IoT devices.

Keep pinging your hosts, permanently

Uptimeify sends ICMP packets to your servers on a schedule and reports packet loss and rising latency before users feel the dropouts.

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Related terms

Packet LossPacket loss is the percentage of network packets that fail to reach their destination.LatencyLatency is the delay between sending a request and receiving a response, usually measured in milliseconds.
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