1

Our DHCP is running out of addresses. I cannot extend the range and would like to resubnet.

Right now our addresses are:

10.1.24.1-254 255.255.255.0

Would I change the subnet to 255.255.254.0 ?

What would the available addresses be at that point? 10.1.24.1 - 10.1.25.254?

Damon
  • 153

1 Answers1

5

Yes, you're right. The range of available addresses is going to be 10.1.24.1 - 10.1.25.254

If you execute ipcalc on linux the output is 

# ipcalc 10.1.24.0 255.255.254.0
Address:   10.1.24.0            00001010.00000001.0001100 0.00000000
Netmask:   255.255.254.0 = 23   11111111.11111111.1111111 0.00000000
Wildcard:  0.0.1.255            00000000.00000000.0000000 1.11111111
=>
Network:   10.1.24.0/23         00001010.00000001.0001100 0.00000000
HostMin:   10.1.24.1            00001010.00000001.0001100 0.00000001
HostMax:   10.1.25.254          00001010.00000001.0001100 1.11111110
Broadcast: 10.1.25.255          00001010.00000001.0001100 1.11111111
Hosts/Net: 510                   Class A, Private Internet
Cristian Yebra
  • 58