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Using Ping - Troubleshooting Methodology | Network Design | Repovive

Repovive.

Network Design26 sections · 911 units44h total

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Using Ping

Basic connectivity test

Ping tests Layer $3$ connectivity using ICMP echo requests. It tells you if a host is reachable and measures round-trip time.

Basic usage:

ping 192.168.1.1
ping -t 192.168.1.1     # continuous (Windows)
ping -c 5 192.168.1.1   # send 5 pings (Linux)

What ping tells you:

Reply received: Host is reachable
Request timed out: No response
Destination unreachable: No route to host

Interpreting results:

Low latency: healthy connection
High latency: congestion or long path
Packet loss: network problem

Some hosts block ICMP. A failed ping does not always mean the host is down.