The following syntax will scan a range of IP addresses. At the point of a ARP response being received it will show a reply message (shown in below example).
Note : In this example it will scan IPs between 10.1.1.1-255.
if [ -x /sbin/arping ] ; then for i in {1..255} ; do echo arping 10.1.1.$i ; arping -c 1 10.1.
1.$i | grep reply ; done ; fiOutput Example
arping 10.1.1.20 Unicast reply from 10.1.1.20 [00:50:53:47:AD:2A] 0.938ms arping 10.1.1.21 arping 10.1.1.22 arping 10.1.1.23
Rick Donato is a Network Automation Architect/Evangelist and the founder of Packet Coders.
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