we have a series of old switches that have been failing at the company for sonme time.. i've since purchased 6 hp2920's which are layer 3 (the old ones are layer 2).. we previously didnt use vlans... we have about 150 workstation drops, maybe 20-40 server drops.. and about 48 voip ip office avaya drops (poe)..
I've configured two stacks, one 4 stack (for servers, workstations), the other 2 switch stack is for the phones and misc (like wifi access point, gateway/router which is sonicwall and vpn device).
Our old setup has windows dhcp spitting out addresses on the 172.16 subnet (255.255.248.0) to all devices.. so one single subnet, no vlans again.
With the new switches i have to get wiring migrated fast, so i was going to migrate the wiring and consider vlans later.
I had thought of going with: Management Servers Workstations Wireless Voip
In all cases each vlan does need to talk to each other, so wouldnt this defeat the purpose of vlans? I could potentially create subnets unique to each vlan (which i think is the ideal way of doing it?) but since they all need to talk to each other, i'm not sure the advantage here.
The main thing i thought was the vlans would be useful for voip traffic.. but i guess qos could be used to prioritize without vlans.
At this point i've just trunked (LACP) the two stacks together using 2 sets of dac cables for 20 mbps throughput and set STP on both stacks with one a higher priority than the other.
Any suggestions or thoughts on this? Thanks in advance