Network Map - CIF-Rochester/wiki GitHub Wiki
VLANs
CIF has 2 VLANs, one for the lab and floor and the other for a DMZ. The DMZ contains any services that need to be accessed by the broader internet, such as our DNS and website. All other servers, and all the ethernet ports on CIF's part of Anderson 3 are on the primary VLAN. The primary VLAN is made from the ###.###.220/24 subnet, which contains 254 usable IPs. The DMZ is on the ###.###.167/27 subnet, giving 30 usable IPs.
Below is a table with how our VLANs are used:
| VLAN | Range | Use |
|---|---|---|
| 220 | 1-100 | Servers |
| 220 | 100-247 | DHCP |
| 220 | 248-255 | IT infrastructure |
| 167 | 65 | IT infrastructure |
| 167 | 66-95 | DMZ Servers |
Upstream DNS
DNS servers for the university can be found at ###.###.7.6, ###.###.2.1, ###.###.224.6, and ###.###.27.5. Be advised that this list is quite old and non-exhaustive. This list was up-to-date as of S2026, when surprisingly, only ###.###.16.189 was found to be out of service. Our DNS should be used for most applications, and can be found at ###.###.167.66 and ###.###.167.67.
Network Infrastructure
The main network switch in the server rack is a 1 Gbps switch owned by IT. The main switch is where all of our servers plug into. This is connected to a 1 Gbps link that goes up to an identical switch that serves floor and provides our connection to the greater university and broader internet. Back in the lab, the main switch has a 1 Gbps link to our router (korvax). korvax provides DHCP to the 220 VLAN, as well as four internal networks, one for the Roundtable ($$$.$$$.1.0/24), one for the general lab machines ($$$.$$$.2.0/24), one for the older lab computers ($$$.$$$.3.0/24), and one for the MacStack ($$$.$$$.4.0/24). Two other internal networks exist, $$$.$$$.5.0/24 (For Netbooting the Sun SPARCstations, NAT, DHCP, and Netbooting from Valor), and $$$.$$$.6.0/24 (For an internal heartbeat between Korvax and Jeorg
Korvax is connected via a gigabit link to Roundtable, via a switch inside the secondary rack.
Korvax is connected via a gigabit link to the lab machines, via a dummy switch on the bottom of red shelf.
Korvax is also connected via a 100 mbps link to the older lab machines Turbo Sonic and the SparcStation 10, via a fast ethernet switch located beneath the Silicon Graphics Indigo, immediately beside the SparcStation.
Korvax --Previously, the MacStack existed in the middle of the cage, and, as such, a switch was connecting it to Korvax and Jeorg. Since the MacStack was decommissioned, the switch has been removed, but the cable still remain in that general vicinity, should people so wish to utilize them again.
Our gateway is ###.###.220.250 for the main VLAN and ###.###.167.65 for the DMZ.
The internal networks each have a gateway located at, $$$.$$$.1.1, $$$.$$$.2.1, $$$.$$$.3.1, $$$.$$$.4.1, and $$$.$$$.5.1 respectively
DNS is provided by abbott (###.###.167.66) and costello (###.###.167.67), with a hidden master hosted by distress and floppy. Internal Machines should use the hidden masters as their primary two DNS Servers (###.###.220.29 & ###.###.220.28)
IP Map
220 VLAN
100 - 247 is DHCP
| IP | Device | Purpose |
|---|---|---|
| 2 | korvax | Router, DHCP server, status page, and autoupdater! |
| 3 | guinevere | Roundtable's Login Node (And Roundtable in general) |
| 5 | jeorg | Router, DHCP server! |
| 13 | hosnian | Minecraft hosting server |
| 14 | mc-hammer | Dedicated Minecraft Server (Orientation, and beyond) |
| 24 | normandy | Minecraft Server Node |
| 28 | malignity | IPA fallback server |
| 29 | distress | IPA primary server |
| 32 | lal | NFS storage server |
| 40 | statler | Learning Server (For Tech Seminars) |
| 41 | waldorf | URSGA Inventory management (ursgdash) |
| 98 | Gordon | Water Watch & Summer Access management |
| 99 | gandalf | Card Reader/Print Server |
| 248 | main switch?? | IT's switch, top of server rack |
| 249 | floor switch?? | IT's switch, 2nd floor networking closet |
| 250 | gateway | - |
167 VLAN
No DHCP
| IP | Device | Purpose |
|---|---|---|
| 65 | gateway | - |
| 66 | abbott | DNS primary |
| 67 | costello | DNS fallback |
| 68 | omega | website |
| 69 | ward | DDOS Potection, Proxy |
| 70 | Debian | Debian Mirror (Also known as Mirror internally) |
| 71 | Leslie | DMZ VM Server |
| 72 | Milk2 | VM, MIF Web Server |
Internal Network 1 (Roundtable)
10- 75 is DHCP
| IP | Device | Purpose |
|---|---|---|
| 1 | korvax/jeorg | Router/Gateway Virtual IP |
| 2 | guinevere | Login Node |
| 5 | jeorg | Router/Gateway |
| 6 | korvax | Router/Gateway |
| 99 | merlin | GPU Node |
| 100 | arthur | CPU Node Controller |
| 101 | Yvain the Bastard | CPU Node |
| 102 | Claudin | CPU Node |
| 103 | Dinadan | CPU Node |
| 104 | Bagdemagus | CPU Node |
| 105 | Gingalain | CPU Node |
| 106 | Aglovale | CPU Node |
| 107 | Brunor | CPU Node |
| 108 | Elyan the White | CPU Node |
| 109 | Galehault | CPU Node |
| 110 | Cador | CPU Node |
| 111 | Daniel von Blumenthal | CPU Node |
| 112 | Calogrenant | CPU Node |
| 113 | Bedivere | CPU Node |
| 114 | Constantine | CPU Node |
| 115 | Esclabor | CPU Node |
| 116 | Erec | CPU Node |
Internal Network 2 (Lab Machines)
10 - 100 is DHCP.
Linux devices increment from 100, while Windows devices decrement from 255. Macintosh Machines are to be placed in the middle of that range.
| IP | Device | Purpose |
|---|---|---|
| 1 | korvax/jeorg | Router/Gateway Virtual IP |
| 2 | steve | Wireless Access Point |
| 3 | Labesquire | AD Server |
| 5 | jeorg | Router/Gateway |
| 6 | korvax | Router/Gateway |
| 101 | protoss | Public Access Linux Machine |
| 102 | Horta | Public Access UNIX Machine |
| 103 | Unnamed Gentoo Machine | Public Access Linux Machine |
| 104 | Tau | Public Access Linux Machine |
| 177 | oscar | Public Access MacOS Machine |
| 251 | Sangheili | Public Access Windows Machine |
| 252 | Illuminate | Public Access Windows Machine |
| 253 | romulus | Public Access Windows Machine |
| 254 | remus | Public Access Windows Machine |
Internal Network 3 (Old/Vintage Lab Machines)
10 - 100 is DHCP
| IP | Device | Purpose |
|---|---|---|
| 1 | korvax/jeorg | Router/Gateway Virtual IP |
| 5 | jeorg | Router/Gateway |
| 6 | korvax | Router/Gateway |
| 101 | turbo | Gateway 2000 486DX-33V (Windows) |
| 101 | Toaster | Gateway 2000 486DX-33V (Debian) |
| 102 | sonic | Power Macintosh G4 |
Internal Network 4 (MacStack)
10 - 100 is DHCP
| IP | Device | Purpose |
|---|---|---|
| 1 | Korvax/Jeorg | Router/Gateway Virtual IP |
| 5 | jeorg | Router/Gateway |
| 6 | Korvax | Router/Gateway |
Internal Network 5 (Netbooting Subnet)
10 - 100 is DHCP
| IP | Device | Purpose |
|---|---|---|
| 1 | Valor | Netboot server, dhcp, etc. |
| 101 | Balrog | Sparcstation Netboot! |
| 102 | Boromir | Sparcstation Netboot! |
| 50 | Reserved, |
Internal Network 6 (Heartbeat)
No DHCP
| IP | Device | Purpose |
|---|---|---|
| 5 | Jeorg | Heartbeat pulse for DHCP Failover |
| 6 | Korvax | Heartbeat pulse for DHCP Failover |