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CRW

CRW is a point-of-presence site at the City of Olive Branch, MS’s water tower nearby Craft Rd and US-78 (34.97440959491132, -89.86623979530327). The top of tower is estimated to be 168.554m elevation.

Standards

This deployment is treated as a TIA-606 class 1 deployment. Cabling is not labeled however.

Physical Deployment

There are two locations for equipment at this site: cabinet 2.2 on the 2nd floor and mast1 on the top of the tower.

Cabinet 2.2 (2.2)

This is a square-hole 42 RU tall server cabinet. There are no locks, and the cabinet has no sides, a single glass front, and a single mesh back door. Due to a water leak reported in 2023-03, the cabinet is currently covered by 5 mil plastic on the top and open sides to reduce the amount of water entering. The front and rear were left uncovered to ensure adequate airflow.

RUUse, FrontUse, Rear
422.2-42 (patch)
41cable manager (2u)
40cable manager (2u)
39poe1
38
37cable manager (2u)
36r1.crw
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3ups.crw (2u)ups.crw (2u)
2ups.crw (2u)ups.crw (2u)
1ShelfShelf

Unlocated: 3x 1u full depth racks, 1x 2u part depth rack.

Mast 1 (mast1)

The mast is a P272 2-3/8" x 72" schedule 40 galvanized pipe and is mounted to the structure using two crossover plates SCX7-u. Attached to this mast is a microwave dish (hil.crw), an omnidirectional antenna (omn1.crw), and a length of unistrut houding two switches (r2.crw, r3.crw) and two conduit boxes with network cameras (cam1.crw, cam2.crw, cam3.crw).

Unistrut

Unistrut clamped to mast1. To it there is a 6x6x4 conduit box holding cam2.crw and cam3.crw. There is also attached a 4x4x4 conduit box for cam1.crw. r2.crw and r3.crw are affixed to the unistrut using metal cable tie.

Cabling Subsystem

Two cat5e shielded cables going from 2.2-42 to mast1. Two unshielded cat6 cables going from 2.2-42 to 2.1 (OBARC).

Patchpanel 1 (2.2-42)

2.2-42 is a 24 port CAT5E patch panel mounted in the top of cabinet 2.2.

PortUse
1r?
2r?
3x-con to cab 2.1 (obarc)
4x-con to cab 2.1 (obarc)
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

Grounding

4 (or 6?) AWG THHN (black) is attaching the cabinet chassis to a grounded conduit on site. There is no dedicated lightning protection or grounding of the cabling interconnects currently. There is no bus bar in the cabinet or at the site.

Power Subsystem

b1up2io0lwvdeaircngups.crwpppccsssoouuucc123oonnuutt222..444ccvvvrrwwrrp12o..ecc1prrowweppooeerccc3aaa.mmmc123r...wcccrrrwwwohminl1..ccrrww

UPS (ups.crw)

Single 120VAC 15 Amp AC line running to the cabinet connected to an APC SMT2200RM2U Smart-UPS. All devices connect to this currently. This has a remote management card. The APC RBC43 batteries were last replaced in 2023-03.

DC Power Subsystem (psu1, psu2, psu3)

psu1 and psu2 are Meanwell MDR-100-24 PSUs located on a shelf-mounted DIN rail in cat2.2. psu3 is a mikrotik 24vdc power supply.

POE Injector 1 (poe1)

This rack-mount POE injector is a ws-poe-12-1u located in cabinet 2.2. It provides 12 ports 24 VDC passive POE and is powered by a dedicated Meanwell PSU located on a shelf-mounted DIN rail.

PortUse
Data+Power 12r1.crw:ether1
Data+Power 11
Data+Power 10
Data+Power 92.2-42:? (r3)
Data+Power 8
Data+Power 7
Data+Power 6
Data+Power 5
Data+Power 4
Data+Power 3
Data+Power 2
Data+Power 1
Data 12?
Data 11?
Data 10
Data 9r1.crw:ether4
Data 8
Data 7
Data 6
Data 5
Data 4
Data 3
Data 2
Data 1

Networking Subsystems

ilo.coconut.crwcoconucta.mc3r.rwc1r.wcrw:suw4pi4s4ct..4ac3c.mh4r32-.w4.b1.cr21ri92wd.9g1.e116r4/252./8c2cr8awm:1b.rcirdwge14roo43mm..nn3c114r...wcc1:rr2bww9r::.iew1dtl2gha9een/1r12184oh4bhi.ail3rrl.41c.c..cr1csrw3rww:1wi:w.:tel1O4cta4B4hhn4A.e1/R3(r3C4u12.s1e2r9.s1p7a7c/e2)8

r1.crw

r1.crw is located in cabinet 2.2. It is an MikroTik RB3011UiAS-RM.

Physical PortUse
sfp1
ether1poe in
ether2
ether32.2-42:? (r2.crw:ether1)
ether42.2-42:? (r3.crw:ether1)
ether5
ether6ups.crw
ether72.2-42:? (obarc 2.1)
ether82.2-42:? (obarc 2.1)
ether9ilo.coconut.crw
ether10eth0.coconut.crw

r2.crw

MikroTik PowerBOX mounted on the unistrut on mast1.

Physical PortUse
ether12.2-42:? (r1.crw:ether3)
ether2
ether3cam2.crw
ether4cam1.crw
ether5

Unlocated: cam3.crw

r3.crw

MikroTik PowerBOX mounted on the unistrut on mast1.

Physical PortUse
ether12.2-42:? (r1.crw:ether4)
ether2
ether3hil.crw:ether1
ether4
ether5omn1.crw:ether1

Backhaul to Hilton site (hil.crw)

MikroTik 921UAGS-5SHPacD. hil.crw is a point-to-point link to East Memphis providing backhaul for the CRW site. It is connected via MikroTik Flex-guide cabling to a MikroTik mANT30 that has a MikroTik Sleeve30 installed. It is mounted about 2/3rds of the way up mast1. One end of a mast mount U bolt’s threads have stretched and so it is not easily put on or off.

Physical PortUse
ether1r3.crw:ether3

Omni for subscribers (omn1.crw)

Uibquiti AMO-5G13 with MikroTik RB912UAG-5HPnD in an RF Elements SBX-S-CC-2SMA. Mounted at the top of mast1.

Physical PortUse
ether1r3.crw:ether5

Computing Subsystems

coconut.crw

coconut.crw is located in cabinet 2.2. It is an HP proliant server. It has a single ethernet port and a dedicated iLO port for OOB management. This device is currently on standby – it has no workloads deployed. Long term, the intent is to deploy a k3s cluster to this hardware and have a 2nd availability zone for k3s workloads. This would provide redundancy for systems like DNS and NTP and allow us to migrate services as needed.

cam1.crw

Vikviz 4518X-IZ mounted on a Carlton E987NR. This can be accessed via BlueIris.

cam2.crw

Mounted on a 6x6x? conduit box shared with cam3. Currently the lens is full of water and so it is not functional.

cam3.crw

Mounted on a 6x6x? conduit box shared with cam2. This can be accessed via BlueIris.

Networking Subsystems

Subnetting

See entries tagged “CRW” on the Subnetting page.

Wireless

The equipment on this site uses a mixture of licensed and unlicensed spectrum. There are two radios today.

Radio Engineering

For an estimate of coverage, view the coverage map.

Spectrum Engineering

FrequencyWidthOperations Regulations & LicenseEmission designatorModeLocationEIRPRadio
5825 mhz (802.11an-165)20 mhzPart 15, unlicensed802.11nmast1hil.crw
5865 mhz (Omni1-5)5 mhzPart 97, KM4ECMnv2mast1omn1.crw

Safety

This location has multiple hazards. They include:

  • Fall risk associated with working on elevations and elevated platforms both with and without railing
  • Falling objects striking personnel below, both associated with the work being performed and generally
  • Weather exposure, as there are work areas that have no overhead covering and there are no temperature controlled areas on site

Also, there is no on-site restroom or accessible water.

Access to the top requires climbing multiple sectioned ladders with built-in fall arrest systems. Standard industrial safety harness and cable grip should be used. When working in areas without railing such as the top of the water tower, tethers should also be used. When working on top of the tower, anticipate that about 15 feet of rope will be required to travel from the top hatch to the work area.