I own a small company that recently is outgrowing our current network.
Currently we have a 10.216.170.0/24 network and therefore only a limited number of available IP adresses.
Now, we have a single router (Cisco ASA 5510) with four ethernet ports:
eth0/0: Primary ISP
eth0/1: Backup ISP
eth0/2: Trunk port
eth0/3: currently not in use
There are 2 VLAN's configured to the trunk port, eth0/2.10 and eth0/2.20.
VLAN 10 is hosting our primary network (10.216.170.0/24) where everything is connected servers, workstations, printers, phones etc.
VLAN 20 is hosting a wireless guest network so that guests cannot access anything but the internet.
Now, i was thinking that we should divide our network so that our serves stayed on the old 10.216.170.0 network and create a new and preferably larger network for workstations, printers, phones etc.
But what is the best practice for this?. Should i just add another VLAN or add a subnet through the last available Ethernet port.
It is important that the new network still is able to communicate with the server network.
Any ideas are greatly appreciated.