Adding IP Addresses to accomodate increase in hosts

[ekinike]

My network addressing scheme can currently handle 254 hosts. The computers are using static IP's rather than DHCP for security reasons. The scheme is similar to the following: 10.10.0.1-10.10.0.255, Subnet Mask 255.255.255.0.


I need to add 50 hosts to my network within the next week and am out of addresses. What would be the quickest, easiest, and most secure way to do so?? Is DHCP the way to go? I do have a Cisco router and PIX in place as well.

 

[lambent]

change your subnet mask to 255.255.254.0, then you'll have 510 available IP addresses to use, ranging from 10.10.0.1 - 10.10.1.254

 

[ekinike]

Wil I need to change this on all my switches, firewall, router, as well???

 

[ROUTERKID1]

They will need the same subnet mask, so yes

 

[ekinike]

If I change the subnet mask on my firewall, router, and switches to 255.255.254.0 will hosts with a 255.255.255.0 still be able to get out to the internet? I'm assuming they would, but would simply not be able to communicate with anything on the 255.255.254.0 subnet. Please confirm or deny

 

[GSTEFANICK]

I'm new to CISCO routing .... so take this with a grain of salt...

If your host are not on the same network as your gateway (router / firewall) you're not going to be able to access the internet.