I intend to deploy VOIP phones, network printers, workstations, and wireless access points. but running low on available IP address.
my current network is192.168.1.0 / subnet 255.255.255.0 (or 192.168.1.0/24). how can i obtain more IPs for this intended purpose? i need communication to exist between all IPs on the LAN.
Extend your LAN to 192.168.1.0/23
So you can use ipadresses from 192.168.0.1 to 192.168.1.254
won't this affect the already existing assigned static IP devices like the existing servers, wireless access points and network printers with the /24 subnetmask? shall they be able to communicate?
Sure, you have to change the subnet by the existing systems. Otherwise you have not a clear communication.
This is, what i will do when i'm in your situation.
Thanks.It is a hectic process of changing all subnet masks for existing systems. nothing like VLANs can save me?
Sorry, i don't work with VLAN's. So i can't help in this question.
Thank you for contacting the Sophos Community!
As mentioned by System Administrator, if you want to increase the number of IPs you need to move the Mask, however, if this isn’t a possibility, you can try using VLANs You can configure a VLAN to use 192.168.2.0/24 for example. For the devices to communicate you would need some routing and a switch that supports VLANs.
Try configuring VoIP phones in their own VLAN, and Workstation in their own VLAN and AP in their own VLAN, basically segment your network by devices.
As a recommendation try to stay away from using 192.168.1.0 and 192.168.0.0 subnets in business environments as this can cause you issues in the future if you try to deploy SSL VPN or IPsec tunnels with home users as the subnets mentioned, as used by 99% of the home users.
VLANs could save you, does your switch provide l3 VLANs?
Addition to Emmanuel post, you can also add the alias interface with different subnet and can create LAN to LAN firewall rule to allow access between them:
Mayur Makvana| Technical Account Manager
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do I have to create the alias on the existing LAN interface that is my port1?
Yes, you are correct, so the physical connection would be from LAN Port1 to the same LAN switch.