Continuous ping with variables for subnet or group of devices

Is there a possibility to create a ping function that supports a subnet or group of addresses that could be run continuously during a maintenance window so devices can be shown responding prior to and checked following say a router or switch replacement to check the end host status.  Maybe an ARP cache as the source list?  This would be used for a before and after validation check. This would be helpful when performing lifecycle work and it would part of the runbook results that could be used in the map.