Either way will work. Changing the subnet would be the less expensive route except for your time. Do you currently use DHCP for all the IP. If so, then that would be a quick solution.
Change the DHCP lease to 1 day. Shut down everything except the DHCP server, change the subnet mask and then bring everything back up, it should get new subnet mask. If you have devices with manually configured IP addresses, then they would obviously have to be changed. OTOH. If you have a switch with a built in router or a router with an unused interface or a router and switches that support VLANS, then you could go that route. This would not require shutting down everything and you could even do it during normal work hours if you are careful. From: Jeff Johnson [mailto:[email protected]] Sent: Thursday, December 17, 2009 3:49 PM To: NT System Admin Issues Subject: Need more IP addresses I am in need of more IP addresses on my network. My current network looks like this: 192.168.1.x 255.255.255.0 I am using 248 IP's currently, so I have very little expansion available. I do see the potential to increase in the following year, so I had better get my butt thinking about this soon. Plus I have Christmas and New Year's holidays that I could work with no one on our network for 3 full days. I am thinking about changing my subnet to something like 255.255.254.0 or 255.255.252.0. Would this be a good way, or would I be better adding an additional router and just creating a new 255.255.255.0 network on 192.168.2.x? I guess my question is which is the "correct" way? Jeff Johnson Systems Administrator 714-773-2600 Office 714-773-6351 Fax ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
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