This is the server network. There is no DHCP; all addresses must be statically set. It isn't really a DMZ as such. I just called it that so we would sound more impressive.
This IP space is 10.56.0.0/24 (10.56.0.*).
|10.56.0.1||router||Default router for machines in this network|
|10.56.0.3||webdev||Testing and development Web server (the real Web server is hosted offsite)|
|10.56.0.4||Email (especially the mailing lists)|
|10.56.0.5||100W Laser||big laser|
|10.56.0.7||backup||(old) webcam setup and (old) backup for all of the servers|
|10.56.0.9||asterisk|| VoIP server for phones on the floor |
|10.56.0.11||newldap||The LDAP server that replaced zimbra|
|10.56.0.12||dev||Software development and testing box|
|10.56.0.13||newvpn||Maker VPN server and admin orchestration jump-off point|
|10.56.0.15||owncloud||Reserved for future use|
|10.56.0.16||reverseproxy||Terminates TLS and proxies for on-site services that should be reachable off-site|
|10.56.0.17||newbackup||Borg-based backup box|
|10.56.0.18||iot||Internet of Things development/bridge VM|
|10.56.0.19||zoneminder||Webcam host box|
|10.56.0.20||vm2||VM host (physical box) - Dell PowerEdge without hot-swap drive bays|
|10.56.0.31||bbs||Jeff's bulletin board server|
|10.56.0.40||vm4||VM host (physical box) - Dell PowerEdge with hot-swap drive bays|
|10.56.0.252||server-sw||8-port HP ProCurve switch in the rack|
|10.56.0.253||loft-sw||48-port Cisco Catalyst PoE switch mounted vertically on the loft railing|
|10.56.0.254||downstairs-sw||48-port Dell PowerConnect switch mounted vertically below the south office window|
The thing about this network is, almost everything on it is a VM. The only physical boxes on this network are the VM hosts and the router. As such, it is unlikely that you would see this network anywhere else in the shop. This may change, however; it'd be a good place to put servers.