Comments on: IPv4 addressing for a new network lab http://itknowledgeexchange.techtarget.com/itanswers/ipv4-addressing/ Sat, 25 May 2013 17:28:03 +0000 hourly 1 By: rglide03 http://itknowledgeexchange.techtarget.com/itanswers/ipv4-addressing/#comment-93103 rglide03 Thu, 09 Jun 2011 18:31:54 +0000 #comment-93103 In order for address space to handle 16 computers, you need to change the subnet mask to 172.16.1.0/27 (255.255.255.224).

]]> By: tomliotta http://itknowledgeexchange.techtarget.com/itanswers/ipv4-addressing/#comment-93063 tomliotta Thu, 09 Jun 2011 00:24:00 +0000 #comment-93063 If you have 6 and need 10 more, you need addressing for 16 hosts. You won’t be able to do better than 172.16.1.0/27 which should accommodate 30 addresses.

Since there are no “fractional” /CIDR values possible, you can’t fall back to /28 which would only allow 14 addresses.

Tom

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