Does the last octet mean anything? RSLinx - EtherNet/IP - Browse Remote Subnet

[theColonel26]

Does the last octet mean anything?


Technically the network's address is 0, but why does it give you the option in the first place?

 

[mk42]

Does the last octet mean anything?


Technically the network's address is 0, but why does it give you the option in the first place?

Strictly speaking, the network address is 0 IF you have a 255.255.255.0 (or /24) subnet mask. If you have something like 255.255.255.192 (/26) then you could have 192.168.0.0, .64, .128, and .196.

Granted, you almost always have a /24 or larger, but you COULD do less if you wanted; unless the equipment is so old it only lets you choose class A/B/C.

 

[drbitboy]

What if the netmask was 255.255.255.128?

[update: mk42 beat me to it!]

 

[theColonel26]

Makes sense. Thanks Guys

 

[lfe]

Subnet online calculator

https://www.subnet-calculator.com/subnet.php