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Shamshad78

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want to expand IP address in LAN

Dear All-

I have one of My LAN having IP range 192.168.0.1 - 192.168.0.254 . IP devices in LAN are increasing and we are in Need of more IP addresses . lots of devices have been given static IPs .. what is the easiest way to increase the range . I want to retain IP address given to current devices ..

Shamshad
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Senthil Kumar
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It depends on the subnet mask you are using. If you are using 255.255.255.0 as the subnet mask you can not extend and use L3 device in between to extend the IP address. Here you can have a different network to talk to the current IP address.
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Shamshad78

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Yes current Subnet Mask is 255.255.255.0 ..  what if i change subnet mask to 255.255.254.0 from DHCP server .. will it work ..
If you only change the subnet mask in DHCP all devices with static IP will have a problem until you change the mask for them to.
I did this with a watchguard firewall/router.  I made a second network on the watchguard and routed traffic through the watchguard and left everything else the same.

It was very easy to do and made my life a lot easier since smartphones, ipads, etc are eating up IP addresses.
you can use secondary ip addresses if your gear allows for it.
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Senthil Kumar
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