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Date:      10 May 2001 18:08:34 +0100
From:      Wayne Pascoe <wayne.pascoe@realtime.co.uk>
To:        freebsd-questions@freebsd.org
Subject:   OT: TCP/IP Subnetting
Message-ID:  <86r8xxnncd.fsf@pan.penguinpowered.org.uk>

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Hi all,

I have a /25 IP range that I need to subnet. I need to give 4
addresses to one network and the remaining addresses to the other
network.

So far, here are my workings:

Original Range:
Network Address: 192.168.1.128
Broadcast Address: 192.168.1.255
Subnet Mask: 255.255.255.128
Range: 192.168.1.129 - 192.168.1.254 (126 Addresses)

4 Address Range:
Network Address: 192.168.1.128
Broadcast Address: 192.168.1.133
Subnet Mask: 255.255.255.255.252
Range: 192.168.1.129 - 192.168.1.132 (4 Addresses)

120 Address Range:
Network Address: 192.168.1.134
Broadcast Address: 192.168.1.255
Subnet Mask: 255.255.255. ???? 
Range: 192.168.1.135 - 192.168.1.254 (120 Addresses)

Can anyone see what I am doing wrong here? I really can't work out the
subnet mask for the 120 Address range. I need it to be that 
192.168.1.132
and 
192.168.1.135 
are on separate networks.

Sorry for the OT'ness, but I figure someone on the list is bound to
know!

Thanks,

-- 
- Wayne Pascoe 
E-mail: wayne.pascoe@realtime.co.uk
Phone : +44 (0) 20 7544 4668
Mobile: +44 (0) 788 431 1675

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