Free online ping tool, to test network connectivity

Test for network problems and track down packet lose

How many packets 3 6 16 32

Purpose of ping

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.

Function

Send ICMP ECHO_REQUEST to network hosts

How to in Terminal

ping [-aAbBdDfhLnOqrRUvV6] [-c count] [-F flowlabel] [-i interval] [-I interface] [-l preload] [-m mark] [-M pmtudisc_option] [-N nodeinfo_option] [-w deadline] [-W timeout] [-p pattern] [-Q tos] [-s packetsize] [-S sndbuf] [-t ttl] [-T timestamp option] [hop ...] destination

Ping Error indications

H, !N or !P – host, network or protocol unreachable
S – source route failed
F – fragmentation needed
U or !W – destination network/host unknown
I – source host is isolated
A – communication with destination network administratively prohibited
Z – communication with destination host administratively prohibited
Q – for this ToS the destination network is unreachable
T – for this ToS the destination host is unreachable
X – communication administratively prohibited
V – host precedence violation
C – precedence cutoff in effect
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