What is Ping?
Ping is a network utility that tests the reachability of a host on an IP network. It measures the round-trip time for messages sent from the originating host to a destination computer.
Understanding Ping Results
- Response Time (ms): Time for packet to reach destination and return Time for packet to reach
destination and return
- Packet Loss: Percentage of packets that didn't return Percentage of packets that
didn't return
- TTL: Time To Live - number of hops before packet expires Time To Live - number of hops before
packet expires
- Min/Avg/Max: Statistics across multiple ping attempts Statistics across multiple ping
attempts
What is a Good Ping Time?
- < 20ms: Excellent Excellent
- 20-50ms: Very Good Very Good
- 50-100ms: Good Good
- 100-200ms: Acceptable Acceptable
- > 200ms: Poor Poor
Frequently Asked Questions
Why is my ping high?
High ping can be caused by network congestion, geographical distance, poor routing, or ISP issues.
What does "Request timed out" mean?
The destination didn't respond within the timeout period. The host may be down or blocking ICMP packets.
Ping is a network diagnostic tool that tests host reachability by sending ICMP Echo Request packets and measuring round-trip time. It is the most fundamental network troubleshooting tool.
Key Facts
- Light travels through fiber at ~200,000 km/s, creating ~1ms latency per 100km
- ICMP ping was first implemented in 1983
- Many cloud providers block ICMP by default
- Max theoretical ping to geostationary satellite is ~600ms
Frequently Asked Questions
What is a good ping time?
Under 20ms excellent (local), 20-50ms good (same region), 50-100ms acceptable, 100-200ms fair, above 200ms problematic.
Why is my ping so high?
Network congestion, physical distance, Wi-Fi interference, ISP throttling, or too many devices on the network.
What does Request timed out mean?
The target did not respond — host may be down, firewall blocking ICMP, network path broken, or target ignoring pings.
What is packet loss?
When data packets fail to reach destination. Even 1-2% causes quality issues in video calls and gaming.
How does ping work?
Sends ICMP Echo Request packets and waits for Echo Reply. Measures round-trip time in milliseconds.