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, fourth 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, fourth floor, Panduit NetKey Cat6A patch panel, 48 ports
- U33: Access switch 2, Ubiquiti UniFi Switch Pro Max 48 PoE, In service, no open incidents
- U30 to U31: Patch panel C, fourth floor, Panduit NetKey Cat6A patch panel, 48 ports
- U29: Access switch 3, Ubiquiti UniFi Switch Pro Max 48 PoE, In service, no open incidents
- U26 to U27: Patch panel D, fourth floor, Panduit NetKey Cat6A patch panel, 48 ports
- U25: Access switch 4, Ubiquiti UniFi Switch Pro Max 48 PoE, In service, no open incidents
- U22 to U23: Patch panel E, fourth floor, Panduit NetKey Cat6A patch panel, 48 ports
- U21: Access switch 5, Ubiquiti UniFi Switch Pro Max 48 PoE, In service, no open incidents
- U19: Patch panel, AV outlets
- U18: AV switch on a shelf, Netgear AV Line M4250-9G1F-PoE+ (GSM4210PD), In service, no open incidents
- U15 to U17: Space for a large room's codec
- U3 to U14: Space for growth
- U1 to U2: UPS, APC Smart-UPS SRT 3000VA, 2U
Rack space
15U free of 42U
27U used. 3U kept for a large room's codec.
Needs 42U for what it serves: exactly enough.
Access ports
40 free of 240
- Access switch 140 of 48
- Access switch 241 of 48
- Access switch 340 of 48
- Access switch 440 of 48
- Access switch 539 of 48
- Outlets patched199 of 240
- AV switch9 of 10
Needs 239 (199 + 20% headroom): 1 to spare.
PoE 720W total PoE availability on each of 5, as the vendor states. The draw is not measured.
Power
APC Smart-UPS SRT 3000VA, 2U
- FeedsA and B
- Load and runtime38%, 26 min
2 power strips at the back: Raritan PX3 monitored rack PDU.
Circuits: A from DB-4A, way 12; B from DB-4B, way 14.
Uplink
- To the MDF, 3.21 Comms room (MDF)10 fibres over the riser (Fibre OM4), from Access switch 1 and Access switch 2 and Access switch 3 and Access switch 4 and Access switch 5
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 26 min at 38% load, inside the standard · the room is at 20.8 °C
UPS runtime · APC Smart-UPS SRT 3000VA, 2U
26 min at least 15
UPS load
38% at most 80%
Temperature Simulated
20.8 °C 18 to 27
Runtime and load as measured at the last timed test, 2 Apr 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 · 4.21 Comms room (IDF)
Would affect 10 spaces, 32 meetings in the next 24 hours (117 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 10
- 4.01 KingfisherFloor 4 · 3 units · 4 bookings
- 4.02 CormorantFloor 4 · 3 units · 3 bookings
- 4.03 WrenFloor 4 · 3 units · 1 booking
- 4.04 RobinFloor 4 · 3 units · 6 bookings
- 4.05 GoldcrestFloor 4 · 2 units · 2 bookings
- 4.06 StonechatFloor 4 · 2 units · 2 bookings
- 4.07 GoldfinchFloor 4 · 1 unit · 3 bookings
- 4.08 ChaffinchFloor 4 · 1 unit · 4 bookings
- 4.09 Focus 4.09Floor 4 · 1 unit · 2 bookings
- 4.10 Focus 4.10Floor 4 · 1 unit · 5 bookings
- Wi-Fi in the open areas2 access points
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-421-as01Access switch 1dub-421-as02Access switch 2dub-421-as03Access switch 3dub-421-as04Access switch 4dub-421-as05Access switch 5
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
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
21 spaces, 68 desks, 8 video rooms · How a comms room is sized- Data outlets19921 spaces, 68 desks, 8 video rooms240panel ports41 to spare
- Access ports239199 + 20% headroom240on 5 switches1 to spare
- Access switches548 ports each5Exactly enough
- PoE budget497 W18 devices as the vendors state; 6 PoE devices with no figure3600 Was the vendor states3103 W to spare
- Rack space42U27U of parts + 25% growth42UExactly enough
- UPSNot sizedload and runtime not recordedAPC Smart-UPS SRT 3000VA, 2Uin the rackNot checked
Patching
235 cables in 15 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 switchWas 3 until the UniFi pilot (21 Sept 2026): the vendor's drawings of the UniFi access switches show no console port, so the two cables to them came out.Console and out-of-band
- 40 × Cat6A0.5 m, blueto Patch panel A, fourth 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
- 40 × Cat6A0.5 m, blueto Patch panel B, fourth floor, ports 1 to 40Panel B outlets 1 to 40 live; 41 to 48 spare.User data
- 2 × Fibre OM42 m, aquato Fibre patch, ports 3 to 4Riser to the third floor MDF.Multimode fibre
- 1 × Cat6A1 m, yellowto AV switch on a shelf, port 10AV switch uplink.Uplinks and trunks
- 40 × Cat6A0.5 m, blueto Patch panel C, fourth floor, ports 1 to 40Panel C outlets 1 to 40 live; 41 to 48 spare.User data
- 2 × Fibre OM42 m, aquato Fibre patch, ports 5 to 6Riser to the third floor MDF. Added when the room was built out to its sizing.Multimode fibre
- 40 × Cat6A0.5 m, blueto Patch panel D, fourth floor, ports 1 to 40Panel D outlets 1 to 40 live; 41 to 48 spare.User data
- 2 × Fibre OM42 m, aquato Fibre patch, ports 7 to 8Riser to the third floor MDF. Added when the room was built out to its sizing.Multimode fibre
- 39 × Cat6A0.5 m, blueto Patch panel E, fourth floor, ports 1 to 39Panel E outlets 1 to 39 live; 40 to 48 spare.User data
- 2 × Fibre OM42 m, aquato Fibre patch, ports 9 to 10Riser to the third floor MDF. Added when the room was built out to its sizing.Multimode fibre
- 8 × Cat6A0.3 m, greento Patch panel, AV outlets, ports 1 to 8AV switch to the AV outlets.AV and room systems
- 8 × Power C13 to C141 m, blackto Power strip A, ports 1 to 8Power, feed A
- 8 × Power C13 to C141 m, greyto Power strip B, ports 1 to 8Power, feed B
Spaces it serves
21 spacesFourth floor 21 spaces
- 4.01 Kingfisher
- 4.02 Cormorant
- 4.03 Wren
- 4.04 Robin
- 4.05 Goldcrest
- 4.06 Stonechat
- 4.07 Goldfinch
- 4.08 Chaffinch
- 4.09 Focus 4.09
- 4.10 Focus 4.10
- 4.11 Focus 4.11
- 4.12 Focus 4.12
- 4.13 Office 4.13
- 4.14 Office 4.14
- 4.15 Pantry
- 4.16 Copy and print
- 4.17 Flex desks A
- 4.18 Flex desks B
- 4.19 Flex desks C
- 4.20 Assigned desks D
- Open areas and corridors, Fourth floor