Subnets and VLANS
From DCWiki
Our network is split up into a number of VLANs, which roughly correspond to subnets, though this is not entirely a one-to-one relationship, as VLAN 20, the "old" VLAN, has a large number of subnets in it - basically anything we haven't moved over to the new model yet. See Theory of Operation for more info on the larger plan here. This page aims to document what VLANs we have, what subnets are in them, where they live and what their function is.
| VLAN ID | VLAN name | subnet(s) | Comments/Description | Router device addresses: management, gateway | Router Device Type | Router Physical Location | DHCP Server |
|---|---|---|---|---|---|---|---|
| 10 | Managed Wireless AP's | 10.40.1.0/24 | This is where my thin AP's go. Routed by the controller, there is an extra interface on the ASH 3560 with helper addresses pointed at Bellona & Victoria | 172.20.163.2, 10.40.1.1 | H3C WX5004 | Cole B-18 rack above 6509 | Bellona & Victoria |
| 20 | Everything else | 192.101.188.0/24, 64.254.160.0/20, 172.20.0.0/16 | This is all of our globally-valid IP's plus legacy internal stuff from before we had VLANs. We are trying to get rid of all the desktop users who have 172.20.x.x on their workstations. Printers still live here, at 172.20.6.x. All of this stuff is routed in the core 6509, as opposed to at our layer 3 switches. | 172.20.160.1, 172.20.0.254, 172.20.64.254, 172.20.160.254, 192.33.12.254, 192.101.188.254 | 6509 | Cole B-18 | Bellona & Victoria |
| n/a | n/a | 64.254.160.0/21 | UMass ASA Translation addresses. 64.254.163.204 - 254 are reserved for static translations. PAT (overflow addresses are 64.254.163.201 and 64.254.163.202. | n/a | n/a | n/a | n/a |
| n/a | n/a | 66.251.24.0/22 | Paetec ASA Translation addresses block 1. Actually starts at 66.251.24.10 - below that is management addresses, etc. Pat (overflow) address is 66.251.24.9 | n/a | n/a | n/a | n/a |
| n/a | n/a | 74.88.88.0/22 | Paetec ASA Translation addresses block 2. PAT (overflow) address is 74.88.88.1 | n/a | n/a | n/a | n/a |
| 33 | IT Servers | 192.33.12.0/24 | IT servers | 172.20.160.1, 192.33.12.254 | 6509 | Cole B-18 | none |
| 40 | Infrastructure | 10.40.0.0/24 | VM Hosts, Network Storage, UPS, etc. | 172.20.160.1, 10.40.0.254 | 6509 | Cole B-18 | none |
| 41 | SAN Fabric | 10.41.0.0/16 | VMHost to SAN connectivity | None | - | Cole B-18, LO G-8 | none |
| 42 | Datatel Idiocy | 10.42.0.0/16 | Datatel "Secure" FTP Transport | None | - | ||
| 43 | VCL Management | 10.43.0.0/16 | Virtual Computing Lab Backend Network | None | - | Eileithyia | |
| 44 | VCL Infrastructure | 192.168.100.0/24 | VCL Infrastructure VLAN shared with Amherst College via switch at 148.85.178.115 | ||||
| 100 | Networking | 172.25.160.0/21 | "networking" vlan. I think all this has in it right now is netreg and netvmhosts... not really sure what else it was intended to be for. | 172.20.160.1, 172.25.160.1 | 6509 | Cole B-18 | none |
| 102 | Public_Wireless | 172.30.64.0/20 | hampguest - through UMass, firewall rules in porter on outgoing to limit ports available | 172.20.160.1, 172.30.64.1 | 6509 | Cole B-18 | Bellona & Victoria |
| 104 | Student_VPN | 172.30.96.0/21 | Student VPN Addresses | 172.20.160.1,172.30.96.1 | 6509 | Cole B-18 | hecate (student VPN concentrator) |
| 105 | Dakin | 172.30.136.0/21, 10.30.136.0/21 | wired subnet - student dorms. The 10.0's are unregistered users, same below. | 172.20.160.132, 172.30.136.1 | 3550 | Dakin G-21 | minos |
| 106 | Merrill | 172.30.144.0/21, 10.30.144.0/21 | see above | 172.20.160.119, 172.30.144.1 | 3550 | Merrill G-6 | minos |
| 107 | Prescott | 172.30.152.0/21, 10.30.152.0/21 | see above | 172.20.161.50, 172.30.152.1 | 3550 | mech room in front of 84 | minos |
| 108 | Greenwich | 172.30.160.0/21, 10.30.160.0/21 | see above | 172.20.161.20, 172.30.160.1 | 3550 | Basement of Donut 3 | minos |
| 109 | Enfield | 172.30.168.0/21, 10.30.168.0/21 | see above | 172.20.161.3, 172.30.168.1 | 3550 | HVAC room near tennis courts, next to the laundry room, by the Women's Center | minos |
| 110 | Library | 172.25.208.0/22 | Library wired facstaff | 172.20.162.6, 172.25.162.1 | 3560 | Closet in Ground floor stairwell | Bellona & Victoria |
| 111 | Cole | 172.25.204.0/22 | Cole Science Center wired facstaff | 172.20.162.15, 172.25.204.1 | 3560-24TS | Room with sliding door behind Jeff Schmittlein's Office | Bellona & Victoria |
| 112 | FPH | 172.25.200.0/22 | Franklin Patterson Hall wired facstaff | 172.20.162.51, 172.25.200.1 | WS-C3560-24TS | Ground Floor closet immediately on right inside office inside back door facing the circle | Bellona & Victoria |
| 113 | Public Safety | 172.25.64.0/24 | Public Safety officer computers, etc | 172.20.162.6,172.25.64.1 | 3560 | Closet in Ground floor stairwell | Bellona & Victoria |
| 114 | Misc_Facstaff | 172.25.65.0/24 | Merrill, RCC, and Dakin (and possibly others) Faculty and Staff | 172.20.160.1,172.25.65.1 | 6509 | Cole B-18 | Bellona & Victoria |
| 115 | VPN | 172.25.66.0/24 | Addresses assigned to people using the VPN | 172.20.162.5,172.25.66.1 | 3560 | ASH 2nd Floor Mechanical Room | charon (VPN concentrator) |
| 116 | OneCard | 172.25.67.0/24 | iStars and whatnot | 172.20.160.1,172.25.67.1 | 6509 | Cole B-18 | Bellona & Victoria where applicable - mostly static |
| 117 | Vendors | 172.25.68.0/22 | Third-party vendors | 172.20.160.1,172.25.68.1 | 6509 | Cole B-18 | Bellona & Victoria |
| 118 | HVAC | 172.25.72.0/22 | HVAC: 72.x is AutoMatrix, 73.x is Automated Logic | 172.20.160.1,172.25.72.1 | 6509 | Cole B-18 | none - all static so far |
| 119 | Bon_Appetit_POS | n/a | Private VLAN for Bon Appetit's private PCI-compliant Point of Sale network with its own router | n/a | theirs | TBD | theirs |
| 120 | Labs | 172.30.32.0/22 | Public labs | 172.20.162.6, 172.30.32.1 | 3560 | Library Switch - closet in Ground floor stairwell | Bellona & Victoria |
| 121 | Arts_Village | 172.25.192.0/22 | Arts Village FacStaff wired | 172.20.162.6, 172.25.192.1 | WS-C3560G-24TS-E | ASH 2nd Floor Mechanical Room | Bellona & Victoria |
| 122 | ASH_Media | 172.25.136.0/22 | ASH gigabit media VLAN | 172.20.162.6, 172.25.136.1 | WS-C3560G-24TS-E | ASH 2nd Floor Mechanical Room | Bellona & Victoria |
| 123 | Lib_Media_Basement | 172.25.140.0/22 | Library Media Basement (and maybe Liebling Media at some point) VLAN | 172.20.160.1, 172.25.140.1 | 6509 | Cole B-18 | Bellona & Victoria |
| 124 | EDH | 172.25.220.0/22 | EDH and Writing Center | 172.20.160.1, 172.25.220.1 | 6509 | Cole B-18 | Bellona & Victoria |
| 130 | Voice | 172.25.32.0/19 | Mitel VOIP VLAN | 172.20.160.1, 172.25.32.1 | 6509 | Core - Cole B-18 | Mitel 3300 |
| 131 | Outlying | 172.25.216.0/22 | Physical Plant, maybe Eric Carle Someday, Children's Center, Multisport, etc | 172.20.161.50, 172.25.216.1 | WS-C3550-12G | mech room in front of mod 84 | Bellona & Victoria |
| 132 | Test_VLAN | 172.30.240.0/21 | Josiah's sandbox VLAN | 172.20.162.5, 172.30.240.1 | WS-C3560G-24TS-E | ASH 2nd Floor Mechanical room | netreg or Bellona & Victoria, depending on current router helper addresses |
| 133 | Blair_Hall | 172.25.212.0/22 | Blair, Red Barn, Admissions, HR, etc | 172.20.162.18, 172.25.212.1 | WS-C3560-24TS | Blair Hall Server Room | Bellona & Victoria |
| 134 | Wallace | 172.30.80.0/20, 10.30.80.0/20 | netreg'ed wireless | Merrill - 172.20.160.119, 172.30.80.1 | 3550 | Merrill G-6 | netreg |
| 134 | Wallace | 172.26.0.0/20, 10.26.0.0/20 | Facstaff Wireless (supercedes old wallace that was registered on minos) | 172.20.160.47,172.26.0.1,10.26.0.1 | 3560E | Liebling | pasiphae |
| 135 | PS_Radio | n/a | Radios over to Mt. Holyoke - not routed here | n/a | n/a | n/a | n/a |
| 136 | PS_Alarms | n/a | Alarms over to Mt. Holyoke | n/a | n/a | n/a | n/a |
| 174 | VCL_External | 64.254.174.0/24 | External VCL VLAN - there's an internal one too... for what? | 172.20.160.1, 64.254.174.254 | 6509 | Cole B-18 | The master VCL Machine or something - Chris? |
| 175 | Student_Servers | 64.254.175.0/24 | Student Servers | 172.20.160.1, 64.254.175.254 | 6509 | Cole B-18 | Eileithyia |
| 204 | Gromit | 172.31.128.0/21, 10.31.128.0/21 | wireless subnet - academic spaces, any Hampshire community member has access. The 10.0's are unregistered users | 172.20.160.47, 172.31.128.1 | 3560E | Liebling | minos |
| 205 | Dakin_Wireless | 172.31.136.0/21, 10.31.136.0/21 | wireless subnet - student dorms. The 10.0's are unregistered users, same below. | 172.20.160.132, 172.31.136.1 | 3550 | Dakin G-21 | minos |
| 206 | Merrill Wireless | 172.31.144.0/21, 10.31.144.0/21 | see above | 172.20.160.119, 172.31.144.1 | 3550 | Merrill G-6 | minos |
| 207 | Prescott Wireless | 172.31.152.0/21, 10.31.152.0/21 | see above | 172.20.161.50, 172.31.152.1 | 3550 | mech room in front of 84 | minos |
| 208 | Greenwich Wireless | 172.31.160.0/21, 10.31.160.0/21 | see above | 172.20.161.20, 172.31.160.1 | 3550 | Basement of Donut 3 | minos |
| 209 | Enfield Wireless | 172.31.168.0/21, 10.31.168.0/21 | see above | 172.20.161.3, 172.31.168.1 | 3550 | HVAC room near tennis courts, next to the laundry room, by the Women's Center | minos |
