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ten
Community Member

Scan a range of addresses

Is there an easy way to use a router to ping or scan a subnet to see what IP's are currently active.

2 REPLIES
Community Member

Re: Scan a range of addresses

you can try to ping the broadcast address of the subnet... the broadcast address is the last address of the subnet. You should receive a answer from the ip's which are in use. But.... not all devices are answering to directed broadcast

Community Member

Re: Scan a range of addresses

Hi Ten,

I use a simple extended ping to the broadcast address, one packet 40 bytes. I think 36 bytes is the minimum.

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Joe

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