fping is a command-line tool to send ICMP (Internet Control Message Protocol) echo request to network hosts, like ping. However, much higher performing when pinging multiple hosts. fping completely differs from ping therein you’ll be able to define any number of hosts on the command line or specify a file with the list of IP addresses or hosts to ping.
Installing fping
The package fping is available to install from the default package repositories using package management tool in most Linux versions.
On Debian/Ubuntu
sudo apt install fping
On CentOS/RHEL
sudo yum install fping
Alternatively, you can download and install it from package.
wget https://fping.org/dist/fping-4.0.tar.gz tar -xvf fping-4.0.tar.gz cd fping-4.0/ ./configure make && make install
Multiple IP Address
fping <ip1> <ip2> <ip3> <ip4>
You can check the connectivity of multiple hosts at once. Just type in the addresses separated by space.
$ fping 192.168.1.1 192.168.1.2 192.168.1.3 192.168.1.24 192.168.1.1 is alive 192.168.1.24 is alive 192.168.1.2 is unreachable 192.168.1.3 is unreachable
Multiple Domains
fping <domain1> <domain2> <domain3>
You can check the connectivity of multiple domains at once. Just type in the domain names separated by space.
$ fping google.com yahoo.com test.com google.com is alive yahoo.com is alive test.com is unreachable
Range of IP Address
fping -s -g <ip1> <ip2>
This will fping a specified range of IP addresses. A cumulative result will be shown after exit (-s option). The option -g is to generate a target list from our input.
$ fping -s -g 192.168.1.20 192.168.1.25 192.168.1.20 is alive 192.168.1.21 is alive 192.168.1.22 is alive 192.168.1.24 is alive 192.168.1.25 is alive 192.168.1.23 is unreachable 6 targets 5 alive 1 unreachable 0 unknown addresses 1 timeouts (waiting for response) 9 ICMP Echos sent 5 ICMP Echo Replies received 4 other ICMP received 0.04 ms (min round trip time) 0.25 ms (avg round trip time) 0.37 ms (max round trip time) 4.167 sec (elapsed real time)
Complete Network
fping -g -r 1 <IP subnet>
With the above command, it will ping the complete network and repeat once (-r 1). With options -q and -s the individual results will be omitted and only a summary of results is displayed.
$ fping -g -r 1 192.168.1.0/24 192.168.1.1 is alive 192.168.1.4 is alive 192.168.1.5 is alive 192.168.1.6 is alive ..... 192.168.1.249 is unreachable 192.168.1.251 is unreachable 192.168.1.254 is unreachable
Reads the List of Targets From a File
fping -s < iplist.txt
We have created a file called iplist.txt having IP address 192.168.1.24 and 192.168.1.25 to fping.
$ fping -s < iplist.txt 192.168.1.24 is alive 192.168.1.25 is alive 2 targets 2 alive 0 unreachable 0 unknown addresses 0 timeouts (waiting for response) 2 ICMP Echos sent 2 ICMP Echo Replies received 0 other ICMP received 0.08 ms (min round trip time) 0.15 ms (avg round trip time) 0.22 ms (max round trip time) 0.025 sec (elapsed real time)
Ping only Alive Host
fping -s -r 1 -a <ip1> <ip2> <ip3>
Using this, we can list only the IPs that are alive and omit that are unreachable.
$ fping -s -r 1 -a 192.168.1.2 192.168.1.24 192.168.1.25 192.168.1.24 192.168.1.25 3 targets 2 alive 1 unreachable 0 unknown addresses 1 timeouts (waiting for response) 4 ICMP Echos sent 2 ICMP Echo Replies received 0 other ICMP received 0.09 ms (min round trip time) 0.16 ms (avg round trip time) 0.24 ms (max round trip time) 1.277 sec (elapsed real time)
Display Targets by Address Instead of DNS Name
fping -A <domain1> <domain2> <domain3>
We will get the IP output instead of the domain name.
$ fping -A google.com yahoo.com test.com 172.217.194.101 is alive 72.30.35.10 is alive 69.172.200.235 is unreachable
Display Summary only
fping -s -q <ip1> <ip2> <ip3>
This will show a summary output instead of each IP output
$ fping -s -q 192.168.1.2 192.168.1.24 192.168.1.25 3 targets 2 alive 1 unreachable 0 unknown addresses 1 timeouts (waiting for response) 6 ICMP Echos sent 2 ICMP Echo Replies received 4 other ICMP received 0.09 ms (min round trip time) 0.21 ms (avg round trip time) 0.33 ms (max round trip time) 4.090 sec (elapsed real time)
These are some of the common examples of command fping. You can include additional examples from the man page at https://fping.org/fping.1.html.
