Notes from the team
Restricted: rack and switch ports
- U42: Fibre patch, Corning Closet Connector Housing, 1U
- U41: Out-of-band console server, ZPE Nodegrid Serial Console Plus, 48 ports
- U38 to U39: Patch panel A, fifth floor, Panduit NetKey Cat6A patch panel, 48 ports
- U37: Access switch 1, Ubiquiti UniFi Switch Pro Max 48 PoE, In service, no open incidents
- U34 to U35: Patch panel B, fifth floor, Panduit NetKey Cat6A patch panel, 48 ports
- U33: Access switch 2, Ubiquiti UniFi Switch Pro Max 48 PoE, In service, no open incidents
- U31: Patch panel, AV outlets
- U30: AV switch on a shelf, Netgear AV Line M4250-9G1F-PoE+ (GSM4210PD), In service, no open incidents
- U27 to U29: Space for a large room's codec
- U3 to U26: Space for growth
- U1 to U2: UPS, APC Smart-UPS SRT 3000VA, 2U
Rack space
27U free of 42U
15U used. 3U kept for a large room's codec.
Needs 24U for what it serves: 18u to spare.
Access ports
41 free of 96
- Access switch 141 of 48
- Access switch 214 of 48
- Outlets patched54 of 96
- AV switch2 of 10
Needs 60 (50 + 20% headroom): 36 to spare.
PoE 720W total PoE availability on each of 2, as the vendor states. The draw is not measured.
Power
APC Smart-UPS SRT 3000VA, 2U
- FeedsA and B
- Load and runtime27%, 34 min
2 power strips at the back: Raritan PX3 monitored rack PDU.
Circuits: A from DB-5A, way 12; B from DB-5B, way 14.
Uplink
- To the MDF, 3.21 Comms room (MDF)4 fibres over the riser (Fibre OM4), from Access switch 1 and Access switch 2
Out-of-band: out-of-band console server (ZPE Nodegrid Serial Console Plus, 48 ports).
Power and temperature
Against the power and racks standardsUPS runs 34 min at 27% load, inside the standard · the room is at 24.9 °C
UPS runtime · APC Smart-UPS SRT 3000VA, 2U
34 min at least 15
UPS load
27% at most 80%
Temperature Simulated
24.9 °C 18 to 27
Runtime and load as measured at the last timed test, 3 Jul 2026 Demo value. Temperature from the temperature probe on the UPS network card, at the front of the rack, reporting to monitoring; live readings come by connector.
If this were off
SimulatedPick a switch, gateway or circuit here to see which spaces, meetings and services would lose the internet. Worked out from the recorded patching.
Access switch 1 Ubiquiti UniFi Switch Pro Max 48 PoE · Rack 1, U37 · 5.21 Comms room (IDF)
Would affect 4 spaces, 18 meetings in the next 24 hours (374 people) and 2 services
Third floor
Fourth floor
Fifth floor
Restricted: rack and switch ports "Up" is an uplink: the way this switch reaches the internet.
Spaces it would cut off 4
- 5.01 Welcome loungeFloor 5 · 4 units · 2 bookings
- 5.02 BoardroomFloor 5 · 10 units · 6 bookings
- 5.03 Demo zoneFloor 5 · 5 units · 5 bookings
- 5.04 Briefing auditoriumFloor 5 · 13 units · 5 bookings
VLANs at the Dublin office
9 VLANs · 2 ports to review- To reviewdub-321-as02 port 24 · Display 2 · dub-309-dsp02, 3.09 Whooper SwanPlanned VLAN 31 Displays and signage, seen VLAN 20 Corporate on the switch.
- To reviewdub-421-as01 port 22 · Scheduler panel · dub-404-sch01, 4.04 RobinPlanned VLAN 30 Room systems, seen VLAN 1 (the switch default) on the switch.
Switches here dub-521-as01Access switch 1dub-521-as02Access switch 2
In-room switches dub-303-sw013.03 Herondub-309-sw013.09 Whooper Swandub-502-sw015.02 Boardroomdub-504-sw015.04 Briefing auditorium
| VLAN | Prefix | Gateway | Addresses | Reaches | Ports |
|---|---|---|---|---|---|
| 10 Management | 10.20.10.0/24 | 10.20.10.1 | 36 reservationsreserved 10.20.10.20 to 10.20.10.219 · pool 10.20.10.220 to 10.20.10.254 | Only the network team's tools and the controller | 75 |
| 20 Corporate | 10.20.20.0/22 | 10.20.20.1 | None reservedreserved 10.20.20.20 to 10.20.20.219 · pool 10.20.21.1 to 10.20.23.254 | Internal services and the internet | 58 |
| 30 Room systems | 10.20.30.0/24 | 10.20.30.1 | 46 reservationsreserved 10.20.30.20 to 10.20.30.219 · pool 10.20.30.220 to 10.20.30.254 | Their cloud services, device management and the booking service | 52 |
| 31 Displays and signage | 10.20.31.0/24 | 10.20.31.1 | 37 reservationsreserved 10.20.31.20 to 10.20.31.219 · pool 10.20.31.220 to 10.20.31.254 | The display and signage management platforms, NTP and the room control system | 37 |
| 40 AV | 169.254.0.0/16 | None: not routed | Link-local, in each room | Nothing outside the room (not routed) | 11 |
| 50 Building | 10.20.50.0/24 | 10.20.50.1 | 1 reservationreserved 10.20.50.20 to 10.20.50.219 · pool 10.20.50.220 to 10.20.50.254 | The building management platform only | 1 |
| 60 Security | 10.20.60.0/24 | 10.20.60.1 | 2 reservationsreserved 10.20.60.20 to 10.20.60.219 · pool 10.20.60.220 to 10.20.60.254 | The security platforms only | 2 |
| 70 Printers | 10.20.70.0/24 | 10.20.70.1 | 2 reservationsreserved 10.20.70.20 to 10.20.70.219 · pool 10.20.70.220 to 10.20.70.254 | The print service | 2 |
| 90 Guest | 10.20.90.0/23 | 10.20.90.1 | None reservedpool 10.20.90.20 to 10.20.91.254 | The internet only, clients cannot see each other | 0 |
From the network standard's VLAN plan. Prefixes, gateways and addresses are made up for the demo; the ports are as recorded for the demo, as the switch platforms would report them.
Compared against
UniFi: The floor's patch panels and UniFi Pro Max 48 PoE access switches (as many as the floor's outlets need) with 10G fibre back to the MDF, the Netgear AV switch for Dante and Q-SYS, an out-of-band console server, and room for a large room's codec, on a UPS.
- Network standard
- UniFi
- Required devices
- All recorded
- Optional fitted
- None of 1
Lifecycle
- In service
- 3
Upkeep
Room checks from the maintenance planner
Next check: Thu, 29 Oct
- Quarterly comms room checkThu, 29 Oct, Liam, with 2 more spaces
Sized for what it serves
6 spaces, 3 video rooms · How a comms room is sized- Data outlets506 spaces, 3 video rooms96panel ports46 to spare
- Access ports6050 + 20% headroom96on 2 switches36 to spare
- Access switches248 ports each2Exactly enough
- PoE budget284 W14 devices as the vendors state; 13 PoE devices with no figure1440 Was the vendor states1156 W to spare
- Rack space24U15U of parts + 25% growth42U18U to spare
- UPSNot sizedload and runtime not recordedAPC Smart-UPS SRT 3000VA, 2Uin the rackNot checked
Patching
73 cables in 10 runs, coloured by the house cable standard · All cables at Dublin officeRestricted: rack and switch ports
- 1 × Console1.5 m, purpleto Console port: the AV switchThe vendor's drawings of the UniFi access switches show no console port, so only the AV switch has a console cable.Console and out-of-band
- 40 × Cat6A0.5 m, blueto Patch panel A, fifth floor, ports 1 to 40Panel A outlets 1 to 40 live; 41 to 48 spare.User data
- 2 × Fibre OM42 m, aquato Fibre patch, ports 1 to 2Riser to the third floor MDF.Multimode fibre
- 1 × Cat6A1 m, yellowto AV switch on a shelf, port 10AV switch uplink.Uplinks and trunks
- 9 × Cat6A0.5 m, blueto Patch panel B, fifth floor, ports 1 to 9Panel B outlets 1 to 9 live.User data
- 5 × Cat6A0.5 m, blueto Patch panel B, fifth floor, ports 33 to 37The access points, on the 2.5 GbE ports.User data
- 2 × Fibre OM42 m, aquato Fibre patch, ports 3 to 4Riser to the third floor MDF.Multimode fibre
- 1 × Cat6A0.3 m, greento Patch panel, AV outlets, port 1AV switch to the AV outlets.AV and room systems
- 6 × Power C13 to C141 m, blackto Power strip A, ports 1 to 6Power, feed A
- 6 × Power C13 to C141 m, greyto Power strip B, ports 1 to 6Power, feed B