I'm trying to fix a mess that I partly inherited and then exacerbated through ignorance.
We have three X450e-48p switches on a single, flat, /24 network, one per building. One of the switches has a small port-based VLAN but essentially everything else is on the Default VLAN so we may as well have been using L2 switches all this time. Anyway, I need to get this thing under control, so:
The default gateway for basically everything in this 10.10.10.1/24 network is the firewall's ip address. The three switches have ip addresses of 10.10.10.150, 10.10.10.151, 10.10.10.152 which are used to manage them.
Can I create an identical VLAN on each switch such that the default gateway for that VLAN is the same IP address no matter which switch the host is plugged into?
Like, on all three switches can I blow away the VLAN configuration and do this:
create vlan voice_vlan
configure vlan voice_vlan tag 11
configure vlan voice_vlan ipaddress 10.10.11.1/24
configure vlan voice_vlan add ports 1-48 tagged
enable ipforwarding voice_vlan
configure vlan default ipaddress 10.10.10.1/24
configure vlan default add ports 1-48 untagged
enable ipforwarding default
I assume this would create a problem with management access so, given we don't have any dedicated management network to speak of, how would I then manage the switches?