IP Address planning (Full Version)

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rpollvogt -> IP Address planning (5.Jan.2011 5:20:26 PM)

We have run across a customer who used 10.1.0.1 /16 an internal interface on their ISA firewall, but the internal hosts are using 10.1.0.0 /24.

They claim this was put in place for growth reasons.

Does/will this cause issues? Is this common practice?

Thanks for your assistance!




Jason Jones -> RE: IP Address planning (5.Jan.2011 5:29:54 PM)

As long as the default internal network address range is defined as 10.1.0.0-10.1.255.255 it should be fine.

Hosts using a smaller netmask is fine and exactly what would be in place if the internal network was split into several VLANs than represent a small portion of the bigger 10.1.0.0/16 network.

Cheers

JJ




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