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Sharoness

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TCP/IP Subneting question

I have a network with several branches.
1 network with: 10.10.3.0
2nd network with 10.10.6.0 till 10.10.9.0
3 network with 10.10.10.0
What subnet can I use in order the network 2 will be isolated. That mean network 1 and 3 won't be able to see network 2?
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xRalf

Hello Sharoness,

do you mean what subnet mask to use?

Regards,

xRalf
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ASKER

yes
255.255.255.0
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fwetzler

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Maybe fwetzler is right.

I haven't read it carefully and thought that
2nd network with 10.10.6.0 till 10.10.9.0 are actually two networks.

But is the subnet mask 255.255.251.0 possible?
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Thanks guys, I really appritiate it. i think i will use Vlans.... i just have to get my boss to approove the purchase.

Thank so much