About the network
Elm Hollow covers about 31 blocks of Irvington’s east side, mostly brick rowhouses. The network was built by the tenants’ association after a provider’s fiber build stopped six blocks short of the neighborhood.
Schematic
Hover over or tap a node for its details, and click or tap again to open it. With a keyboard, move to the schematic and use the arrow keys.
Uptime
99.84% uptime over the last 90 days, with 1 day of degraded service or maintenance.
Governance
- Owned by
- Elm Hollow Community Network Cooperative
- Legal home
- Cooperative corporation, owned by member households
- Members
- 1,487 households, one vote each
- Monthly assembly
- Third Thursday of each month, 7:00 pm, at the tenants’ association hall
- Annual assembly
- Every January
- Maintenance fund
- $6 a month per household, suggested. No household is disconnected for not paying.
Stewards
Elected by the members. Listed by first name and initial.
- Sunita R.Network steward · since 2026
- Tomás S.Treasurer · since 2024
- Ahmed G.Membership steward · since 2016
- Zainab K.Training steward · since 2016
- Marlon T.Rooftops steward · since 2018
- Camila B.Secretary · since 2021
Backhaul
Links that carry the network’s traffic to the wider internet.
| Link | Medium | Capacity | Far end | Peak use yesterday |
|---|---|---|---|---|
| LT-05-BH1 | Fiber | 10 Gbps | Irvington internet exchange | 26% |
| LT-05-BH2 | Licensed microwave, 11 GHz | 2 Gbps | Tower site, Irvington | 37% |
| LT-05-BH3 | Fiber, donated by the library system | 1 Gbps | Public library network | 37% |
Maintenance log
Firmware 4.6.2 rollout. Staged firmware rollout to every node, one hub’s area at a time. Each node restarted once.
Backhaul fiber cut. A construction crew dug through the fiber. Traffic moved to the backup link at reduced speed until the provider spliced the cable.
Annual assembly: 139 members attended and elected three stewards.
Steward training on monitoring and fault-finding: 7 attended.
Hardware refresh: 33 nodes upgraded to Stoop R6 over the year.
Heat wave: 8 rooftop nodes throttled; all recovered overnight.
Installer workshop: 22 residents trained and climbed their first roof.
Annual assembly: 155 members attended and elected three stewards.
Grounding on N-0883 redone after an inspection found a corroded lug.
Radio on N-2903 replaced after water got into the enclosure.
Spare parts inventory counted and restocked.
N-0103 moved to the other side of the roof to clear a new air-conditioning unit.
Expansion: three new nodes in 2023, mostly in grids E1, G3 and H3.
High winds: 3 rooftop mounts checked and re-secured.
Hardware refresh: 23 nodes upgraded to Stoop R5 over the year.
Hardware refresh: 3 nodes upgraded to Gantry H4 over the year.
Backhaul upgraded from 1 Gbps to 10 Gbps fiber.
Firmware 4.0 rolled out to every node.
New hub on the community health center roof: N-0856.
Firmware 3.0 rolled out to every node.
New hub on the fire station roof, under a city agreement: N-0313.
Expansion: five new nodes in 2010, mostly in grids B4, C4 and D1.
Network switched on: twelve nodes across the first few blocks.
Founding assembly: the Elm Hollow Community Network Cooperative adopts its charter and elects five stewards.