Subnets and VLANS

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	172.26.0.0/20, 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	172.20.160.1, 64.254.174.254	6509	Cole B-18	Eileithyia
175	Student_Servers	64.254.175.0/24	Student Servers	172.20.160.1, 64.254.175.254	6509	Cole B-18	none
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