Greeneville
City Schools
Wiring
Guidelines
This document outlines the guidelines for all wiring in any Greeneville
City Schools building. Deviations from
these guidelines must be approved by the Director of Technology or any member
of the Central Office Instructional Technology Staff. Deviations cannot be approved by building
technology leaders.
The word label in this document means machine printed flag style
label with the exception noted below.
Those unsure about label specifications mentioned in this document
should contact the Director of Technology or a member of the Central Office
Instructional Technology staff before proceeding.
Section 1 -
Cabling/Labeling Specifications
- Cable labels
shall be printed on 1/4 tape.
- Cables used in
any wiring closet shall not be longer than five (5) feet long. The only exception to this rule is fiber
cables used to interconnect network devices in which case ten (10) foot
cables may be used. If long fiber
cables are used, the installer is responsible for properly wire managing
cable(s). Fiber cables shall not be
wire managed with other non-fiber cables.
If cables longer than the above are needed approval must be granted
by the Director of Technology or a member of the Central Office
Instructional Technology staff.
- Cables shall
be color-coded to indicate the device connected to the other end. The color code shall be as follows:
Red server or other extremely critical device.
Green administrator or other critical
personnel. Examples include principals,
assistant principals, secretary's (SASI users), bookkeepers, or technology
leaders. Administrator's include the
Director of Schools, assistant superintendent's, Central Office secretary's, or
other critical personnel in any building.
Yellow network devices such as access points (AP's)
or connections to other network devices.
Black network printers. This does not include workstations with
printers shared through workgroup connections.
It only includes printers with a static IP address shared through a file
server.
White IP phones.
Blue any other workstation connected to the network.
- Upon
connection of any device utilizing a red, yellow, or black cable,
Greeneville City Schools Central Office Instructional Technology staff
shall be notified. The vendor
should notify the I.T. Network Administrator if any device requires
special port considerations (hard setting of media type, duplex, speed,
etc.).
- All non-blue
cables shall be labeled on both ends of the cable (patch
panel and switch port) indicating the device connected to that port. Names should indicate function and/or
room number rather than a person's name (Principal, rather than the
principals name in that particular building).
- All cables
connecting frames/closets shall be identified indicating the destination
closet of that cable (see naming conventions below).
- Egress cables
shall be labeled as such. They
shall indicate the provider of the service and any appropriate circuit
numbers.
- 48 port patch
panels shall be used throughout all Greeneville City Schools wiring
closets. Note: at present, some
closets contain patch panels and switches with less than 48 ports. New equipment shall meet the
specifications of this point and the next.
- 48 port
switches shall be used throughout all Greeneville City Schools wiring
closets.
- All
connections between switches and routers shall be full-duplex fiber or
other high-speed (1gbps or higher) connections. Gigastack or
other half-duplex connections shall not be used.
- All cables
shall be properly wire managed.
Wire management is an integral part of all Greeneville City Schools
wiring closets. Velcro fasteners
are used to wire manage all cables from patch panel to switch port. It is desirable that patch panel ports
correspond to the same port on the switch (1-1, 2-2, etc.)
- Plastic cable
ties shall not be used on the front side of any patch panel/switch. Cables on the front of a cabinet/closet
shall be managed with Velcro fasteners.
If an outside vendor does not have Velcro fasteners, they must
contact a member of the Central Office Instructional Technology team to
procure the necessary fasteners.
Velcro fasteners as used in this document refers to double sided
Velcro tape or Velcro fasteners specifically designed for cable
management. Plastic cable ties may
be used on the back side of cabinets.
- Devices
receiving power from POE ports on switches shall be labeled as such. Such labeling may be P- with the other
required information on the label.
If the vendor's labeling hardware includes graphical images, the
inclusion of a power icon is sufficient.
- All cables
outside of the wiring closet shall be clearly labeled as follows:
Boxes installed on/in walls shall be clearly labeled
as to the patch port to which each connection connects (Outside
cabling vendors may be summoned to return on-site immediately
{meaning they will have to stop any work in progress at any other site,
regardless of the client or any real or potential loss of business, and return
to the Greeneville City Schools} if Greeneville City Schools personnel discover
mis-labeling).
Labeling shall consist of closet number, patch panel,
port: for example, 2A34.
Cables inside boxes shall also be clearly labeled
within easy sight upon removal of box face plate (inside the wall box without
having to pull the cable) with the same information. This label, and this label only, may be done
by hand.
Horizontal runs which terminate in ceilings and/or in
junction boxes not in public areas (crawl spaces, floor boxes, etc) should be
labeled with permanent marker written in an easily viewable area rather than
tape.
- All unused
openings in wall-mounted face places will have filler plates installed. Under no circumstances should an open
hole be left in a wall plate.
- It is not
desirable in any building that surface mount cable runs be utilized. It is strongly desired that all network connections be mounted in
the wall. This is especially true
in public areas and administrative buildings. We recognize this is not always
possible. Any proposed use of
surface mount runs must be approved by a member of the Central Office
Instructional Technology team.
Building technology leaders may not approve the use of surface
mount installations.
In the event
surface mount must be used, crown molding and/or chair rails must not be
cut. The conduit must be bent to go
over/around these items.
- Wall jacks
should be mounted approximately 12 inches from the floor to the center of
the box. Obviously this may vary,
but in general, wall jacks should be mounted below the level of the working surface of a standard height desk.
- Any cable
terminated with RJ-45 connectors shall be properly terminated. This means that a sufficient amount of
the cable jacket shall be crimped into the strain relief mechanism of the
connector to ensure no part of the twisted pair(s) cables shall be exposed
beyond the end of the connector.
- All cabling and
ports shall be tested by the cable vendor to ensure correct wiring before
contacting Greeneville City Schools personnel to approve work. See warnings about mis‑labeled
cables above. Our staff has the
ability to quickly check the wiring accuracy of each drop. We may, but will not necessarily, check
any drops to accept work done by an outside vendor. However, upon discovery of one
incorrectly wired port, our assumption shall be that all ports are mis-wired and we will require the re-certification of
all runs installed by this vendor at the time the mis-wired
port was installed.
- Horizontal
cable runs do not have to follow the color specifications mentioned above.
Horizontal in this document means the back side of the patch panel to
the back side of the wall mounted box.
However, horizontal runs must be labeled on the box end of the
cable as specified above.
- Vendors
installing networking hardware (switches, routers, etc) into any
Greeneville City Schools wiring closet shall physically install the
hardware into the frame using a minimum of four screws to secure the hardware. Final approval for payment will not be
forthcoming until all hardware is properly secured into the frame.
- Fiber pairs
shall utilize adjacent connectors in the patch panel. Under no circumstances are non-adjacent
ST fiber patch panel fiber connections to be utilized for a connection.
- Any device
requiring special consideration(s), programming, and or VLAN membership
shall be clearly indicated by a flag label on the cable in addition to
the name label.
- Half-duplex/10mbps
devices are not desirable in the Greeneville City Schools network. However, if they must be utilized,
Central Office Instructional Technology staff must be notified before
connecting such devices. Any
half-duplex device must have its corresponding switch port hard set. This same provision also applies to any
10mbps device.
Section 2 - Naming
conventions
The following points, in general, apply only to Greeneville City Schools
Instructional Technology personnel. A
standard naming convention shall be used as follows:
1.
Closets/frames shall be named with the building
abbreviation, -, the abbreviation MDF/IDF as appropriate, -, and the room
number containing the frame/closet.
a)
For example, the MDF at the Central Office is CO‑MDF‑04. The fiber connection connecting this closet to
the upstairs closet shall be labeled To CO-IDF-<room number>. The other end of the connection upstairs
shall be labeled To CO‑MDF‑04.
2.
There shall be only one MDF per building. MDF within the Greeneville City Schools
means the point in the network where egress is obtained. There may be exceptions to this
provision. If so, they will be indicated
by the name of the closet (see preceding provision).
3.
Building abbreviations are as follows:
a)
Central Office CO
b)
Highland HI
c)
Hal Henard HH
d)
EastView EV
e)
Tusculum View TV
f)
Greeneville Middle School GMS
g)
Greeneville High School GHS
h)
Greene Technology Center GTC
4.
All closets/frames shall be clearly labeled with one
inch tape indicating the name of the frame either on the door, the frame, or in
a location clearly visible inside/on the frame.
If possible, the name shall also be placed on the door frame of the room
containing the frame.
5.
Switches shall be named utilizing the nomenclature
above with SW- and the switch number appended. For example, the first switch (by number, not
necessarily by the physical arrangement of switches in the frame) in the
Central Office MDF above would be named CO‑MDF-04-SW1. This name shall be indicated by 1/4 tape on
the face of the (each) switch.
6.
Routers programmable by Greeneville City Schools
personnel shall use the same provisions but will append RT-.
Section 3 - Addressing/Programming
1.
All switches or other devices programmable by
Greeneville City Schools personnel shall be addressed in such a manner they may
be accessed/programmed through a web browser from a machine inside the
Greeneville City Schools network.
2.
All devices utilizing non-blue cables (except IP
phones) or needing special switch considerations should be so indicated in the
comment field for the appropriate port when programming the port.