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Necessary Components
Outside Connections Handbook
School Network Design and
Installation Guide
Necessary Components
Wiring Kits
2 Jacks per faceplate kits
Minimum Specifications: 2,000' Category 5, unshielded twisted
pair, plenum-rated cable, 40' surface-mount classroom raceway,
4 junction boxes and faceplates, 8 7' classroom line cords.
4 Jacks per faceplate kits
Minimum Specifications: 4,000' Category 5, unshielded twisted
pair, plenum-rated cable, 40' surface-mount classroom raceway,
4 junction boxes and faceplates, 16 7' classroom line cords.
Server
Minimum Specifications: Pentium 100MHz, 32 MB RAM, 1.6GB
disc or equivalent. Preconfigured to provide Domain Name Service,
Internet e-mail and Web server.
Network Electronics
Unaanaged Hubs
Minimum Specifications: unmanaged hubs, Ethernet, 10BaseT,
8 or 12 ports, not rack-mountable.
Managed Hubs(Base Units required, Expansion Units
add ports to connect additional classrooms).
Minimum Specifications: Ethernet, 10BaseT, 8 or 12 ports,
1 AUI port, rack-mountable (or put on shelf)HP OpenView for
Windows remote management software or equivalent supported.
Internet Connection Equipment
LAN Dial-up Shared Modem
Minimum Specifications: Ethernet, 10BaseT, 1 or 2 telephone
lines, multiple dial-out sessions to an Internet Service Provider.
ISDN Routers
Minimum Specifications: Ethernet, 10BaseT, integrated
NT-1, multi-link PPP, dial on demand, unlimited number of
LAN users.
Dedicated Line/Frame Relay Routers
Minimum Specifications: Ethernet, 10BaseT, V.34 serial
interface, 56K to T1 capable.
Internet Service
Choose the method that best fits your projected use from
the Outside Connections Handbook,
below.
Outside Connections
Handbook
Introduction
Almost everyone agrees that the Internet will play a vital
role in the educational process. While low-cost or no-cost
access to the Internet is in the wind for all Massachusetts
schools, schools must budget based on realistic, current expectations.
This handbook deals with pricing in general terms since equipment
and access pricing is rapidly changing. We provide ranges
of prices for the available services based on current published
pricing data. This will provide school administrators and
consultants with the tools by which they can evaluate options
for network connectivity and Internet access. For those of
you familiar with the Net Day School Network Design Guide,
this guide focuses on #4: Internet Service.
Key Terminology
A key word in this decision-making process is bandwidth which
is simply the measure of the speed, or size, of your computer's
path for transferring data to and from the Internet.
To employ a common analogy, think of your school system as
a house under renovation from the pipes up. Before the plumbers
can accurately determine how big a water line to pull in from
the street, they need to know how much water you will need.
How many bathrooms, sinks and outside faucets do you want?
Do your plans include a laundry, dishwasher or outside irrigation
system for the lawn? When you see what each of these line
items will cost, you will probably have to choose between
one amenity and another.
The water analogy is not quite perfect. Once the water line
is installed, you only pay for the water that you use. With
Internet access, you pay for the size (bandwidth) of your
connection every month whether you use it or not.
Bandwidth often gets used interchangeably with references
to the speed of data transmission. The faster the speed of
transmission, the "wider" the bandwidth is said
to be. In terms of the water analogy, the wider the bandwidth,
the bigger the pipe is. Common data transmission speeds include
28.8 kb/s (=28,800 bits per second), 56 kb/s, 128.8 kb/s and
1.544 Mb/s (=1,544,000 bits per second, = T1).
Bandwidth is not the only measure of Internet access performance.
Two Internet access services may have the same bandwidth,
but one may be easier to expand in the future provided that
an investment in equipment is made at the beginning. Also,
services can be dedicated (a specific access port is reserved
for your exclusive use), dial-up (a number of access ports
are shared among a larger number of users) or packet-switched
(meaning the data is wrapped up in packets for transmission).
So, the purchasing decision becomes more complicated. There
are other measures of quality which must be considered as
part of the purchasing decision such as the availability and
level of customer service, the probability of getting a busy
signal or slow responses when you try to connect, and so forth.
Types of Service
The equipment installed in a school must be compatible with
the type of connection services selected by the school. There
are two types of services which must be established. First,
there is the local access connection between the school and
its Internet service provider or between the school and other
schools in the school district. Then, there is the connection
to the Internet service provider itself. The discussion below
presents an introduction to the varieties of connection services
available. Consideration is given to ranges of costs to be
expected, performance levels and any special equipment required.
Once the type of local access connection is determined, the
types of equipment required and the level of Internet service
simply follow.
Local Access Connections
Many types of outside connections are available. Some are
standard types with years of operational experience. Some
are new and just coming on-line now. Selection of a particular
technique involves consideration of:
- Initial costs including set up charges and equipment costs
- Ongoing costs including monthly charges and connection
charges
- The number of users to be simultaneously supported
- Whether the connection is dedicated or non-dedicated (often
called dial-up)
- The types of applications to be run, and expandability.
1. Standard Telephone Service
Standard telephone service may be used if just one or two
computers are to be connected to the Internet and expansion
is not expected in the short term. Widely available modems
operate at data rates up to 28.8 kb/s. Most of these provide
data compression capabilities which roughly double the effective
data rate. The exact data rate achieved depends on the nature
of the data being transmitted and the quality of the phone
line. Some data has more redundant information in it and can
be compressed more. Some data has almost no redundancy and
does not yield any compression. It is reasonable to assume
a compression factor of two, on the average. The modem's actual
data rate is determined by a "handshake" when connection
is first established. If the run from your school to the nearest
telephone central office (CO) is very long, the handshake
process will decide that 28.8 kb/s can not be supported and
a slower speed is used. Don't expect to achieve the highest
performance quoted for a modem. It might not be possible given
the length of your phone line and the nature of your data.
Standard telephone service is not suitable for video transmissions.
Basic phone service will be available from a number of sources.
As of 1996, NYNEX provides measured business service for $17.96
per month in most MA towns with a set up charge of $93.20.
In some areas flat rate business lines are also available
for $38.42 per month. The usage costs (message units and toll
charges) associated with the connection depend on the location
of your Internet service provider relative to your school
location. Try to choose an Internet service provider which
minimizes your connection charges.
2. ISDN
Integrated Services Digital Network (ISDN) moves telephone
connections from the analog world to the digital world. This
service can quickly and accurately transmit voice, data and
video simultaneously. ISDN can provide one or two 64 kb/s
channels which can be used independently for voice or data.
So, ISDN has two to four times the capacity of basic telephone
connections operating at their fastest rate.
ISDN modems are somewhat more expensive than basic telephone
modems. Basic modems are around $150 while ISDN modems are
around $250. Again, both types are widely available. ISDN
set up charges (from the Telecomm provider and the Internet
service provider) cost approximately $200 for dial-up lines
and $600-$700 for dedicated lines. Dedicated ISDN lines usually
require a router which ranges from $1,000 - $1,500.
As of the end of 1996, NYNEX has a trial product called Educational
ISDN Communications Service (EICS). This service has a flat
rate including installation and no message units. The trial
rate of $70 per month per line is available at least through
October 11, 1996 with a probable extension through June 1997.
Exact pricing on the extension is not yet available. This
trial is only available through the Massachusetts Corporation
for Education Telecommunications (MCET). Some Internet service
providers act as consolidators and also provide flat rate
service.
One Caveat: ISDN charges may be higher if your school is
more than 3 miles from your nearest serving telephone central
office (CO).
3. Frame Relay
Frame relay is a packet-switched protocol which ensures reliable
delivery of the data packets. Packet-switched systems allow
multipoint connections for bursts of short packets. Frame
relay service can support bursty traffic such as that produced
by LAN-to-LAN connections or graphical images from the Internet.
Frame relay packets can be steered through the public switched
network to a series of predetermined destinations of your
choice. Schools can use frame relay to connect their schools
more cheaply than leased lines. A router with appropriate
frame relay software is required at the user end and at the
Internet service provider end of the link. Frame relay can
operate at 56 kb/s and up. Service providers typically support
rates up to T1.
Additional equipment and set up are required for frame relay
service. For example, a frame relay router costs something
in the range of $800-$3,000. Set up costs are also required.
A CSU/DSU (high speed line interface box) is required which
costs $300-$1,300 depending on data rate.
4. T1 and Fractional T1 Leased Line
T1 and Fractional T1 are point-to-point leased line services
that can handle voice, data and video. Leased lines are a
simple but sometimes expensive way to get from the school
facility to the Internet service provider. Leased lines operating
at T1 or fractional T1 speeds are available from a number
of sources so costs are competitive. The data rate of a dedicated
T1 connection is 1.544 Mb/s. Fractional T1 services start
at 56 kb/s and can be dedicated or non-dedicated.
The equipment required for T1 is similar to that required
for frame relay. Namely, a router which costs in the range
from $800-$3,000 and a CSU/DSU in the range from $300-$1,300
are required at each end of the leased line. However, there
is an important difference between leased line service and
frame relay service. Let's say that you want to connect three
school facilities to an ISP. If leased lines are used, you
would need a router and CSU/DSU at each school and 3 CSU/DSU's
at the ISP end connected to 3 T1 ports on a router. On the
other hand, only one T1 connection to the ISP is required
if frame relay is used. Thus, there is a savings in fixed
costs of CSU/DSU's and router ports and T1 line set up charges.
There is also a savings in ongoing costs for this configuration.
The downside is that the T1 line to the ISP has to be shared
among the three schools when frame relay is employed, meaning
the bandwidth is shared and flow-through might slow down during
times of highest usage.
It is recommended that you get help from people knowledgeable
in this area to choose between leased lines and frame relay
system configurations. The advice of an expert will save money
in the long run. Monthly operating costs for T1 service or
fractional T1 service depend on the distance from the school
facility to the nearest central office (CO), the data rate
and the particular configuration. These rates can be obtained
from your selected service provider.
5. Cable
Cable television companies are beginning to offer Internet
access over the coaxial cable system. As such, these services
will include both the local access and Internet access components
of service. Cable modems, like standard telephone modems,
transport digital information over lines intended for analog
signals such as voice conversations and television channels.
Cable modems are capable of supporting data rates from 500
kb/s up to 30 Mb/s, depending on manufacturer. They are generally
stand-alone (external) devices with a cable connection to
the outside world and an Ethernet connection on the user side
of the device. Some cable modems are in the form of a PC adapter
card with a cable TV input. These modems cost in the range
of $300-$600, but in most cases the modems are supplied as
part of the monthly service fee. Some modems are inherently
asymmetrical. That is, they provide a wider bandwidth from
the Internet to the user relative to that provided from the
user back toward the Internet. Some modems are symmetrical
providing the same bandwidth in each direction. The industry
is assuming that residential users will require less bandwidth
in the Internet direction while commercial and institutional
users will require symmetrical access.
Internet access services provided by cable companies will
be oriented toward residential customers, at first. Expanded
services will be geared toward small businesses and institutional
customers such as schools. Many cable companies have promised
free Internet access services for schools in their serving
areas as part of a nation-wide initiative. At the present
time, it is anticipated that such services will become available
beginning in 1997. They will consist of a connection to the
cable network via a cable modem and some free access to the
Internet at speeds in excess of 1 Mb/s. This connection, along
with some additional equipment such as a router, may serve
dozens of simultaneous users. Over time, it is possible that
bandwidth will increase so that several hundred simultaneous
users can be supported by each cable connection. Stay tuned.
6. Wireless
Wireless connectivity is used in special situations. For example,
one can buy a wireless Ethernet extender which has a range
of several miles and which costs $5,000-$10,000 per end. Some
school systems might find this device to be useful for campus-to-campus
interconnection with no monthly ongoing costs.
PCS (Personal Communications Systems) systems are just coming
on-line now. These are typically aimed at single users and
typically are not set up to provide higher data rate connections.
Internet Service Providers
ISPs provide the connection to the Internet. Again, careful
shopping is in order. The quality of an Internet service provider
can be measured from a number of perspectives. All are important.
1. Availability
Availability measures the probability that you get access
to the Internet when you try to connect. Some vendors have
insufficient lines or switching capability. Others have excessive
downtime due to equipment failure. Quality ISPs have redundant
connections from their facilities to the Internet backbone.
Some ISPs have redundant equipment configurations which minimize
downtime. Similarly, some have uninterruptible power supplies
which also minimize downtime and help to avoid lost data in
the event of power failure at the ISP's headquarters and POP's
(point of presence). Ask your candidate Internet service provider
for information about reliability and availability of its
service.
2. Customer Service
Internet service providers must be capable of dealing with
a wide variety of customer problems. They must know about
PC's and Mac's and all the operating systems which run on
these machines. They must know about modems and routers for
basic service, ISDN, frame relay and leased line equipment.
The Internet itself is the least of their problems.
3. Types of Service
An ISP must be capable of supporting the type of service you
require and support any service you expect to grow into. Two
types of standard telephone service are typically available,
dial-up and dedicated. ISDN service is usually dial-up with
the associated message unit fees. But, some ISPs provide the
equivalent of dedicated ISDN service with flat fees.
Frame relay and leased line connections are available from
many of the ISPs. Set up and ongoing costs vary and some ISPs
require the use of more expensive routers and CSU/DSUs than
others.
4. Local Access
Be sure that the connection point (POP) to the selected ISP
is nearby so that a local call or a free call or a short run
in the case of a leased line is all that is required to access
the ISP, etc.
5. Costs vs. Services
Some ISP fees do not include all the services required by
a school application. Be sure that the service includes all
the functions which you will need such as e-mail and access
to the world wide web. The service must also cover the number
of individual users anticipated at your school. Some ISP's
initial charges include the cost of the current release of
access software and filtering software while others do not.
6. Additional Services
There are additional services available through ISPs which
may be of great interest to your school(s). Features like
e-mail and storage of web pages are fairly routine, while
features such as filtering, virtual hosting, dynamic or static
IP addressing or server collocation are less common but no
less important in selecting an ISP whose services are appropriate
to your specific and individual needs.
Summary
Hopefully, this handbook has begun to unravel the mystery
of outside connections. As you can see, almost everything
is variable. Some things to keep in mind:
- Shop carefully.
- Make sure that the services you buy conform to recognized
national standards. This will ensure interoperability with
the majority of vendor's services and equipment.
- Some equipment appears to be less expensive but has hidden
costs. For example, the base price of a router may include
a license for just one user or a few users. A school will
need an unlimited license.
- Equipment may be limited to the bandwidth, protocol and/or
type of connectivity they accommodate. Be sure to understand
not only what the equipment will do for you today but how
it can grow with you in the future.
- Some routers are priced without the IP protocol. This
protocol is mandatory for operation on the Internet. Others
have extra charges for data compression algorithms or for
management protocols, etc.
- Be sure to compare apples-to-apples.
School Network Design
and Installation Guide
I. School Network Design Guide
Designing a school network is inherently a complex process.
There are very good reasons why a custom designed network,
created to order by a commercial firm, is typically much more
expensive than schools participating in NetDay may be able
to afford. The objective of the NetDay effort is to help you
get a working network installed which will function fully
and which will cost considerably less. We have created this
Network Design Guide to help you design the network you will
install as part of NetDay.
This guide will help you design a network capable of performing
appropriate functions for classroom use with the following
characteristics:
- access to e-mail and the WorldWideWeb
- connect as few as four classrooms in the school
- expandable to the entire school by adding modules of four
classrooms
- built on Ethernet and unshielded twisted pair cable standards
- cabling configured in a star from a network hub
- serve at least one computer in each of the four classrooms
- expand later to additional computers in the classrooms
- provide an Internet connection to all the computers on
the network
- conform to Internet standards
- built on proven, interoperable components using mainstream
technology
- upgradable to add a server, remote management, higher
bandwidth, and/or segment isolation
- minimize waste or duplication with extensions or upgrades
- cost as little as possible consistent with the above
This guide is written for schools that do not presently have
a local area network (LAN) connecting school classrooms. If
you already have a Novell network, you can connect it to the
Internet easily using a gateway product, such as the Instant
Internet from Bay Networks, or others. If you have an AppleTalk/LocalTalk
network, you will need to replace the wiring and add Ethernet
cards to the classroom computers to make them ready for direct
Internet connections. Alternatively, you can install a LocalTalk
- Ethernet gateway such as a Shiva FastPath.
Many schools have various physical impediments to installing
Local Area Network cabling. These may be as troublesome a
barrier as thick stone walls or as hazardous as asbestos.
This Design Guide is not intended to provide answers to all
of the difficult installation issues which may be encountered
in any given school site. Those circumstances will require
calling in the professionals.
Rather, we unabashedly admit that the approach of this Guide
is best suited for schools that have relatively easier physical
plant issues. If your school has dropped ceiling tiles in
hallways, easily drilled walls to pass wiring to classroom
outlets, and an accessible power outlet in the classroom,
it will be much easier to use this Guide to design your school
LAN.
Choosing a Network Design Model
This guide will help you design your school's network by
providing baseline network design models as a reference
point. Remember that you always have the option of connecting
more rooms, using more sophisticated network equipment, increasing
the operating speeds, etc. as your circumstances allow. We
encourage you to take advantage of the opportunities to obtain
components made available to you by the special arrangements
through NetDay. How far you go is up to you.
To simplify as much as possible the process of designing
a school network, we have created two basic models you can
follow: an Entry Level Model and a Growth Model. You can start
with the Entry Level Model now for some number of classrooms
and later extend it to the Growth Model. Or you can make a
bigger commitment right away and follow the Growth Model;
this will probably be the way you will want a whole school
network to be designed.
The starting point for choosing the model for your school
network design is to answer the two questions below:
Question 1
Do you want to create the smallest, least expensive network
that will let a small core of teachers gain some practical
experience and to set an example for the others? If so, consider
the Entry Level Model.
Entry Level Model
With this model you will be able to build a basic local
area network (LAN) which will connect one or two computers
in each of approximately four classrooms to a central hub
with a basic Internet connection. It will allow students or
teachers to send and receive e-mail, to read and respond to
Internet News groups, and to retrieve Web resources conveniently
from the classroom. It is most suitable for use by a small
number of users, probably 10 or fewer. Its most important
benefit is that it will provide an experimentation facility
which is extendible to additional classrooms and additional
computers in a classroom without wasting any of the investment
made in this model. If you switch to the Growth Model later,
you will probably be able to re-use the unmanaged hub elsewhere
in your school.
The major drawbacks to this model include: 1) lack of remote
manageability, 2) minimal capacity, 3) limited functionality.
These are not serious problems if the network is being used
for experimentation and can be rectified when you implement
the Growth Model. These drawbacks are discussed in more detail
below.
Ironically, since the Entry Model's network hub cannot be
managed by your technical coordinator from a remote location,
more network management skills are required on-site in the
school. The speed of retrieving WorldWideWeb pages is limited
by the bandwidth of the Internet service access line. A dial-up
line is barely tolerable for a single user; if a number of
users wanted to use the Internet connection at the same time,
delays would become intolerable. At that point you would want
to upgrade to a higher bandwidth Internet service. Finally,
this model has no server, so your Internet Service Provider
must provide functions such as storing e-mail, hosting a Web
server and tracking the names associated with the computers
in your school. Extra services impose extra costs and result
in less flexibility and local control.
Question 2
Do you want to take advantage of the low costs of NetDay
components to install a more capable network for a core of
classrooms or computer labs? This would provide for more classroom
outlets and remote network management so that any future expansion
will only need to connect additional classrooms. If so, consider
the Growth Model.
Growth Model
This model provides a design which is more suitable for
a whole school network. Like the Entry Level Model, the Growth
Model will allow students or teachers to send and receive
e-mail, to read and respond to Internet News, and to access
Web resources conveniently from the classroom. The greatest
functionality difference, however, is that students and teachers
will also be able to publish information for others to view
on the WWW server that is included.
This configuration will result in a small core network which
will connect multiples of approximately four classrooms to
remotely manageable network equipment with (possibly) a higher
bandwidth Internet connection capable of serving more users.
It provides for an equipment rack and patch panel in the wiring
closet for organization of the greater number of wires
involved and to provide for convenient expansion.
This model costs more than the Entry Level Model for the
same number of classrooms. It provides for four network jacks
per
classroom but it can be expanded with additional wiring kits.
Because its electronic components are remotely manageable,
you may need fewer network experts on the district's staff,
and the network manager will be able to diagnose and sometimes
solve network problems without having to go to the school.
The major drawback of this model is its higher cost. But
since it represents the "best practices" advised
by experts, it incorporates features you will probably want
to have eventually anyway and you will probably never be able
to reduce costs below the special promotional prices available
through the NetDay effort.
Network Model Components
Once you have selected a model you wish to follow for your
network design, you need to understand the various components
which will be involved. While the major categories of components
are the same for both network models, the capabilities of
products within the respective categories may be substantially
different.
Diagram 1 illustrates the major component types and how they
interrelate. It shows a complete network from the outlets
for the
computers in the classroom at the end of the 1 - Wiring Kit.
The 2 - Network Electronics are housed in the wiring closet.
All the
classroom wiring runs back to this core, like the rays of
a star. Typically also housed in the wiring closet is the
3 - Internet
Connection Equipment. The functionality of this equipment
and its type of interface is determined by the type of access
line which
connects to your 4 - Internet Service. The 5 - Server is probably
also stored in the wiring closet or the office of the Technology
Specialist if the school has one. Finally, in the classroom
(or computer lab), the line cords of the wiring kit connect
to the
6 - Classroom Computers.
The same component categories are shown on Diagram 2 which
illustrates Internet connection options that can be used by
either Design Model. Refer to materials distributed by the
Outside Wires and Internet Connection Task Forces for more
detailed information.
Below is a discussion of these component categories with
a cost estimate for the configuration. This is meant only
to aid your choice of model. Actual costs will vary according
to the products you choose in each category
Entry Level Model Network Components
Classroom Wiring Kit:
Provides sufficient cable for wiring two outlets in each of
approximately four rooms (depending on distance) including
classroom and wiring closet jumper cables.
Network Electronics:
We recommend using an 8-port unmanaged hub for lowest possible
cost. Substitute a hub with more ports if network
expansion is expected soon. But don't anticipate too far in
the future because if you shift to the Growth Model you will
prefer a managed hub for an expanded network.
Internet Connection Equipment:
We recommend a network modem which uses a single telephone
line or an ISDN router for lowest cost options to match your
Internet service type. An ISDN router will scale better for
an expanded network.
Internet Service:
Your Internet Service Provider will assist you in choosing
a service which meets your requirements and will help recommend
the Internet Connection Equipment.
Server:
Not essential if your Internet Service Provider provides Name
Service, e-mail and News (if desired).
Classroom Computers:
These are the Macintosh or PC personal computers you have
in the classroom or a computer lab. They may need an Ethernet
network card installed in them. They probably need network
software which speaks the TCP/IP protocol. Finally, they need
Web browser software, which allows them to use the WorldWideWeb,
and e-mail and news reading software, which may be built into
your browser. To run this software effectively Macs need to
be at least LC IIIs and PCs need to be 486s.
We have attempted to give you an order-of-magnitude estimate
of the likely cost you will incur using this model in the
table below. Realize that the prices are estimates only for
the most rudimentary components of this model and are useful
only for comparing to the same estimates for the Growth Model.
Sample Entry Level Model
Network Configuration
| ITEM |
EST. PRICE |
Internal LAN Module
|
|
| Two-port/room Wiring Kit |
650 |
| Hub - 8 ports unmanaged |
135 |
| Subtotal |
785 |
| |
|
| Internet Connection |
|
| ISDN Router |
920 |
| Access Line Installation |
663 |
| Subtotal |
2,583 |
| |
|
| Total Estimated Price |
3,368 |
To extend this design to include multiples
of four additional classrooms, add Classroom Wiring Kit modules.
It is advisable, however, to consider moving to the Growth
Model as you extend the network to include all the classrooms
in the school. The Internet connection will need increased
bandwidth as usage increases, but it is impossible to predict
the usage patterns you will experience and therefore at what
number of classrooms that need will occur.
Growth Model Network Components
Foundation Wiring Kit
Select one two-outlet wiring module and one four-outlet wiring
module for each module of four classrooms. This combination
provides sufficient cable for wiring six outlets in up to
four rooms (up to 24 outlets). It includes classroom and wiring
closet jumper cables and an equipment rack and patch panel
for organizing cabling and equipment in the wiring closet.
Network Electronics
We recommend one 24-port (or a pair of 12-port) managed hub(s)
for connecting each classroom module. Stackable and SNMP manageable
hubs allow easy expansion and can be managed remotely, leveraging
expensive technical management skills.
Internet Connection Equipment
We recommend an ISDN router, a shared modem server with multiple
telephone lines, or a dedicated line router for the greater
bandwidth needed to serve more users on the school LAN.
Internet Service
Your Internet Service Provider will assist you in choosing
a service which meets your requirements and will help recommend
the Internet Connection Equipment.
Server
Needed for operation if your Internet Service Provider does
not provide Name Service, E-mail and News (if desired). The
server can also run a Web server software package which allows
you to post information for others to retrieve. This is a
convenient way to communicate with other people inside the
school, in the community, within your state, or across the
world.
Client Workstations
These are the same Macintosh or PC personal computers as in
the Entry Level Model that you have in the classrooms or computer
lab. They need, at the least, the same capabilities as in
that model including the Ethernet network card, TCP/IP communications
and Web browser applications software. Macs need to be at
least LC IIIs and PCs need to be at least 486s.
To take advantage of the additional capabilities this model
offers, these computers may need additional software to publish
pages on the Web server, for example. Also, with advances
in audio, video, distance learning and videoconferencing,
you will find in time that these computers will need upgrading
with more memory, faster processors, and newer software.
Sample Growth Model Network Configuration
| ITEM |
EST. PRICE |
Internal LAN Module
|
|
| Four-port/room Wiring Kit |
1,500 |
| Network Hub - 24 ports
managed |
1,318 |
| Subtotal |
2,818 |
| |
|
| Internet Connection |
|
| ISDN Router |
920 |
| Access Line Installation |
663 |
| ISP Startup Cost |
1,000 |
| Subtotal |
2,583 |
| |
|
| Total Estimated Price |
5,401 |
To extend this design to include multiples
of four additional classrooms, add Classroom Wiring Kit modules.
The Internet connection will need expanded bandwidth as usage
increases.
Wiring Layout
The basic steps in designing the wiring layout for your network
are:
- Determine the classrooms to be connected
- Choose a location for the wiring closet
- Determine the path the wires will follow from the wiring
closet to the classrooms
- Measure the wiring path lengths carefully to stay within
distance limits
Step 1
From discussions with the teachers in your school, budget
limitations, and other considerations, you will determine
the classrooms which are targeted for wiring. You should mark
them tentatively on a copy of the floorplan of the school.
Don't use the original because you may need to make revisions
later.
Step 2
You should next locate a room to use as the wiring closet.
It should have the following characteristics:
- reasonably centrally located in the building or within
the group of classrooms
- no more than 250 cable feet from the farthest classroom
faceplate
- preferably the location of your telephone line connections
- physically secure, lockable
- sufficient electric power (minimum of one 20 amp circuit
with 2 - 4 outlets)
- at least 4 feet by 4 feet of free space for an equipment
rack and working space
- no water - should not be a janitor's closet
- air conditioning may be desirable, depending on maximum
temperatures equipment will reach; at the least, reasonable
ventilation is required
Since you want to continue using this cabling regardless
of future expansion, you must plan ahead in locating the wiring
closet. Make sure there is sufficient space to add an additional
rack and working space to accommodate future needs.
Step 3
Lay out cable paths from the wiring closet to the classrooms
on paper first, then check foot by foot. Following hallways
or other areas where there is a drop ceiling will make cable
pulling easier. Avoid going through firewalls, if possible,
because you will have to plug the hole for the cables with
firestop to meet building codes. You should also avoid routing
near large motors, such as for compressors, generators or
elevators, although only small separation distances (1 - 2
feet) are required. Make sure that no cable will run parallel
with power cables although only small separation distances
are required from them as well. They should cross at right
angles.
Check the proposed routes VERY CAREFULLY for obstructions.
Work closely with the Principal and the Janitor to confirm
any obstructions on the cable path. If you need to core cinder
block or concrete walls, costs will increase ($50 to 200 per
hole depending on the wall material) and you will need to
plan ahead on scheduling because coring cannot be done during
school hours.
Make sure you draw the cable paths on the school floor plans
to use as installation guides. If you do not have blueprints
of floor plans, you might be able to use the fire drill exit
maps. You should make separate copies of the floor plans for
each cable run and give them to the installation crews on
those respective runs to follow when they install the cable.
Make sure you maintain a master plan with the cable routing
"as built." This will become part of your documentation.
Step 4
Finally, measure all cable runs to make sure they are within
the 250 foot limit. Don't forget to add in the height of ceilings
and 10 feet of slack that should be left in the ceiling.
Below is a sample school floor plan diagram with the classroom
cabling shown. You should make sure you prepare such a diagram
for several purposes:
- It serves as a double check on selecting the correct wiring
kits
- It assists the cable pullers during installation
- It is an important part of the documentation of the project
which will be necessary to have in future years.
Classroom Computer Placement
Where you place the network junction box in the classroom
is determined by the placement of the computers which will
be
plugged into it. Remember the line cord which connects the
computers to the junction box's faceplates is only 7 feet
long,
so the junction box placement must be reasonably accurate.
When computers are deployed in classrooms, they need to be
positioned so that they can be integrated effectively into
the
instructional environment. Ideally, a classroom should be
set up to allow flexible deployment of computers and other
technologies along with associated furniture, but addition
of technology to existing classrooms is typically an exercise
in
compromise. Many classrooms are too small even for the number
of students assigned to them, let alone for the addition
of technology, and placement of doors, windows, heating systems
and electrical power all conspire to limit the options.
However, when installing network wiring, every effort should
be made not to impose new unnecessary restrictions on how
the classroom environment can be shaped. Here are some guidelines
to consider:
Try to provide network drops in at least two different locations
in the room to allow for a teacher station to be located
away from a student computer cluster.
For example: where 6 network drops are being installed, one
box with 2 drops close to the teacher's desk will allow
the teacher's computer and a networked classroom printer to
be connected, while another box with 4 drops, possibly on
the other side of the room, could provide an appropriate location
for a cluster of student computers. The Wiring Kits for
NetDay are available in either configuration, so you can mix
as you desire.
While some sources favor placing the boxes with network jacks
below table height, we advise placing them at least 16"
above table
height so that you can see at a glance which jacks have a
computer plugged into them. This height will also ensure that
they will not
be bumped when computers or monitors are moved. (We're assuming
that each jack is appropriately labeled on the box and that
this labeling correlates to labeling on the patch panel in
the wiring closet. Also, if jacks are made "live,"
i.e. are connected to ports on
network hubs in the wiring closet, only as they are needed,
there needs to be visual differentiation, e.g. colored dots,
identifying the
live jacks.)
Make sure there is an appropriate source of electrical power
in the same vicinity as each set of network connections.
Most classrooms in older buildings will need electrical upgrades
to support clusters of computers. The existence of a power
outlet in an appropriate location is not necessarily sufficient.
There may be several rooms on the same circuit and attempts
to
power clusters of computers, monitors and printers in each
of these rooms may result in circuit overloads. One of the
checklist
schedule items to be performed prior to network installation
is to confirm the location of sufficient power outlets.
Try to avoid using long patch cables to attach computers
(or intermediate network hubs) to wall jacks.
Long patch cables can get easily damaged in a classroom setting,
especially when furniture is moved. Also, if the classrooms
are already quite far from the wiring closet, the additional
length of the patch cables might result in exceeding specified
distances
between computers and network hubs. The line cords (classroom
patch cables) included in the wiring kits are 7 feet long
to
reduce this problem.
Placement of network connections for the teacher's computer
should take into account not only proximity to the teacher's
desk but also potential connection of the computer to a large
screen TV (either one that is permanently installed on a wall
bracket or one that can be rolled in on a cart) or to some
other presentation system which can allow a large group, such
as
the entire class, to view the display.
Where there is a cluster of student computers, try not to
place them too close together.
This is the single biggest problem in most classrooms, even
those that are not strapped for space. Try to provide enough
space
in front and to the sides of each computer or computer table
so that 2-3 students can cluster comfortably in front of each
computer
when working in small groups. Try to provide enough table
space to left and right of the computer so that there is not
only room for
keyboard and mouse (on either side) but also room for notepads
and books. (Space allocations for computers in many classrooms
seem to imply that you're not allowed to use books or notepads
when using the computer!!)
Allowing sufficient distance between several computers, each
of which connects to a network jack in a single box, has
implications for the length of the patch cables you'll need
(and is potentially in conflict with the recommendation above
to avoid
long cables).
Try to provide tables that are deep enough from front to
back that the computer need not be pushed right back against
a wall (stressing connecting cables), that there is adequate
room for the keyboard in front of the computer/monitor, and
that the user is at a reasonable distance from the screen.
(For most computers and keyboards, 30-32" is about right.)
There are other ergonomic issues which should be considered,
though we do not know if there are any ergonomic standards
to meet the needs of children of different ages. Certainly,
the tables or carts that computers are on should have adjustable
height, and this feature should be exploited in particular
classrooms to suit the size of the children in that room.
Ideally,
chairs should also be adjustable height to allow for individual
variation, but adjustable height chairs that are "ruggedized"
for the classroom environment are very expensive.
Try to avoid placing computers so that they face towards
windows or are in bright summer sunlight. Bright reflections
on the screens can make them virtually unreadable.
If you must position computers across the room from windows,
consider placing them on tables at right angles to the wall
rather than with their backs to the wall and facing the windows.
Try to avoid placing computers close to radiators or where
they will get a lot of heat from the summer sun.
Internet Connection Bandwith
For more detailed information on choosing your Internet connection
service and the associated electronic equipment, you
should refer to the Outside Connections Handbook, also part
of this technical package. Our purpose in discussing bandwidth
requirements here is to give you some initial understanding
of the type of connection equipment you will be focusing on
in the
Component Selection section.
It is difficult to advise you on selecting the proper bandwidth
for your Internet connection service. As noted above, your
school's
Internet traffic will depend on many factors. But, if you
can afford it, more bandwidth will certainly be preferable
to less. If
performance is too slow, users will be frustrated and the
potential of the entire effort will not be realized. As traffic
increases over
time, sufficient bandwidth will need to be increased.
Below is a table of the number of users in a school that
can be served with different bandwidth services. The total
number of
users who can be served by the system is, of course, greater
than the number of simultaneous users.
CONNECTION
TYPE |
DATA
RATE |
USERS IN SCHOOL |
SIM.
USERS |
| Dial-up |
28.2 Kbps |
5
|
1-2 |
| ISDN |
128 Kbps |
20 |
2-5 |
| Frame Relay |
64 K - 1.5
Mbps |
50-500 |
5-100 |
| Leased Line |
56 K - 1.5
Mbps |
50-500 |
10-100 |
| Cable |
10 Mbps (shared)
|
* |
* |
* Due to line sharing, cable modem data rate, recommended
number of users, and prices vary widely.
For a small school LAN being used by a few teachers or classrooms,
we recommend ISDN instead of a single telephone line dial-up
service if you can get it at your location. Especially with
NYNEX's flat rate tariff for Massachusetts schools at $89
per month, the performance is attractive for the price. You
will also find that ISDN routers are less expensive than network
modems.
II. Network Component Selection Guide
Now that you have chosen a Network Design Model and you understand
the Component Categories, you will need to select individual
network components. This is difficult because there is a great
variety of products available from many vendors, some with
similar capabilities, others with special features which better
serve some installations than others. Even with extensive
understanding of the products -- such as a network design
firm would have -- it is difficult to match their capabilities
with a particular network design.
We hope to simplify this process by giving you minimum specifications
for each of the categories of component products for both
of the Design Models. In the case of Wiring Kits we have attempted
to package individual parts together so that selection is
easy.
Minimun Specifications
The Minimum Specifications were established with the objectives
of ensuring:
- that the objectives of your chosen Design Model would
be fulfilled and
- that common core technical standards would be followed
that ensured functionality, interoperability, and mainstream
product selections
The point of this is to make sure that you will have a working
network if you only follow the minimum recommendations of
this paper.
The core technical standards we advocate following are:
- Ethernet
- Category 5
- 10BaseT
- TCP/IP
Below are the Minimum Specifications for the categories of
network components discussed in the Design Models. You will
see the core technical standards repeatedly in those specifications.
Network Products Minimum Technical Specifications
1. Classroom Wiring Kit
Two Jacks-per-faceplate kits (Entry Level and Growth
Model expansion)
Minimum Specification: 2,000' Category 5, unshielded twisted
pair, plenum-rated cable, 40' surface-mount classroom raceway,
four junction boxes and faceplates with two RJ-45 jacks, eight
7' classroom line cords
Four Jacks-per-faceplate kits (Entry Level and Growth
Model expansion)
Minimum Specification: 4,000' Category 5, unshielded twisted
pair, plenum-rated cable, 40' surface-mount classroom raceway,
four junction boxes and faceplates with four RJ-45 jacks,
sixteen 7' classroom line cords
2. Foundation Wiring Kit
Two Jacks-per-faceplate kits (Growth Model)
Minimum Specification: 2,000' Category 5, unshielded twisted
pair, plenum-rated cable, 40' surface-mount classroom raceway,
four junction boxes and faceplates with two RJ-45 jacks, eight
7' classroom line cords, 72" equipment rack, one rack-mountable
shelf, 24-port patch panel, eight 3' patch cords
Four Jacks-per-faceplate kits (Growth Model)
Minimum Specification: 4,000' Category 5, unshielded twisted
pair, plenum-rated cable, 40' surface-mount classroom raceway,
four junction boxes and faceplates with four RJ-45 jacks,
sixteen 7' classroom line cords, 72" equipment rack,
one rack-mountable shelf, 48-port patch panel, sixteen 3'
patch cords
2. Network Electronics
Unmanaged Hubs (Entry Level Model)
Minimum Specification: Ethernet, 10BaseT, 8 or 12 ports, not
rack-mountable
Managed Hubs (Growth Model) (Base Units required,
Expansion Units add ports to connect additional classrooms)
Minimum Specification: Ethernet, 10BaseT, 8 or 12 ports, one
AUI port, rack-mountable (or put on shelf)HP OpenView for
Windows remote management software or equivalent supported
3. Internet Connection Equipment
LAN Dial-up Shared Modem (Entry Level Model)
Minimum Specification: Ethernet, 10BaseT, 1 or 2 telephone
lines, multiple dial-out sessions to an Internet Service Provider
ISDN Routers (Both Models)
Minimum Specification: Ethernet, 10BaseT, integrated NT-1,
multi-link PPP, dial on demand, unlimited number of LAN users
Dedicated Line/Frame Relay Routers (Growth Model)
Minimum Specification: Ethernet, 10BaseT, V.35 serial interface
(or RJ-48X if the CSU/DSU is integrated), 56K to T1 capable
4. Internet Service: (Both Models)
Minimum Specification: PPP LAN service, single dial-up telephone
line or ISDN port, e-mail accounts, Domain Name Service, WorldWideWeb
access
5. Server: (Growth Model)
Minimum Specification: Pentium 100MHz with 32 MB RAM or PowerPC
66 MHz with 24 MB RAM or equivalent and 1.2GB disk. Able to
provide Domain Name Service, Internet e-mail and Web server
Expansion Considerations
You may decide that the flexibility of having unused capability
or expansion capacity is worth paying for now. You should
also realize, however, that the cost of electronic components
typically declines and the capability rises over time. Thus,
paying a premium for capabilities in electronic components
which are not used in the near future becomes less and less
attractive. So there are tradeoffs you must balance against
the timing of your educational technology plan and the actual
pace of network traffic growth your network experiences.
You will find that the entire system you are installing will
be used in increasingly varied ways and always to an increasing
extent. Once you have a server and a LAN you will find that
there are many CD-ROMs which can be very valuable in the classroom,
so you will probably want a CD-ROM server. Teachers and students
will use e-mail internally, and everyone will want to have
electronic bulletin board capability. These additional applications
-- beyond the express intentions of NetDay -- will be a significant
benefit for your school. They will also create increasing
demands on the infrastructure which will necessitate expansion.
Servers will need additional memory, bigger discs, faster
processors, and more software. Network speeds and Internet
connection bandwidths may need to be increased.
Predicting the timing and extent of such pressures for expansion
is impossible other than to assure you that it will happen.
The best advice we can provide is that the traffic growth
curve will start low and build slowly until it reaches some
indeterminate takeoff point above which it will grow very
rapidly. The takeoff point is influenced by the number of
users of all types (teachers, administrators, and students)
who start using regularly WorldWideWeb resources for mainstream
learning purposes.
You should consider that future expansion of your school
network may require extensions of the network equipment. The
most likely kinds of network expansions will include some
or all of the following at various times:
- connecting additional classrooms or computer labs
- adding outlets in presently cabled classrooms or computer
labs
- adding file servers, WWW servers, network printers and/or
CD-ROM servers
- segmenting high traffic demands from each other
- segmenting academic and administrative network uses
- increasing bandwidth on the local area network
- increasing bandwidth of the Internet connection
All of these extensions may be made with the Design Models
-- and none of them require replacing any of the NetDay cabling.
You will be installing additional cabling in some cases, but
generally it is the network electronics, access electronics,
or other computer devices which are added to or replaced.
This preserves your investment in cabling as much as possible.
When you want to connect more computers in a classroom to
the LAN, you will need more network ports to plug into. You
can accomplish this two ways:
Option 1: You can pull additional cable to an additional
junction box, possibly located elsewhere in the classroom.
Option 2: You can plug a small network hub into an
existing outlet and connect computers to that hub's ports.
Best technical practices would favor Option 1 -- pulling
more cable. This will be the easiest to manage, the most straightforward,
and will result in line cords being well-managed and out of
the way in the classroom. We created the Wiring Kits especially
so you could add cabling with two or four outlets for a four-classroom
module. This will also give you maximum flexibility in placement
of the jacks in the classroom. This option will cost approximately
$100 per computer to add two computers per classroom.
Option 2 is technically allowable under the network design
we are recommending; it does not violate the limits on the
numbers of hubs on an Ethernet segment. Line cords will limit
computer placement options in the classroom, however. The
cost will be approximately $100 for a hub with four to eight
ports. So the cost per computer would be $13 to $50 per computer
to add from two to eight computers.
It is your choice, and both options remain available later
regardless of your choices now. Furthermore, the existing
cabling is not wasted or replaced later.
Network Components Selection
The Minimum Specifications should guide you in selecting
network components. If you choose products from each category
that meet or exceed these specs and install them correctly,
you should have a working network that is expandable within
the constraints of the your design model.
You should keep foremost in mind, however, your own criteria
as you consider selecting products. Again, we encourage you
to use the Design Model you have chosen as a starting point;
it will be the lowest cost, most basic approach to designing
and building a sufficiently functional school network.
If the Wiring Kits do not fit the requirements of your school,
you can order a la carte from the products available on the
"Superlist." We have included later in this document
the wiring components section of the Superlist as an example.
The Superlist is available on the NetDay WWW site (www.massnetworks.org)
and it contains all the products which vendors have made available
on special terms for schools as a part of NetDay, not just
those which satisfy the Minimum Requirements of the Network
Design Models.
To select components:
Check the Superlist for more information, including prices,
on individual products.
Consult the Questions to Ask Vendors section for suggestions
of issues to discuss with the vendors to assist you in selecting
products. Then use the Vendor Contact Information that you
will also find on the WWW site to discuss your questions and
requirements.
After you have made your product selections, fill in the
Component Selection Form included below. This will simplify
your component selection process. It is keyed to the component
categories we have used throughout this guide and includes
packages of components, especially in the wiring kits, which
reduce your risk of forgetting to order critical components.
Our objective is to make it unlikely that you will be missing
important items when your volunteers are on site and eager
to install them. This form should also become part of your
network documentation.
Finally, use the NetDay web site again to get vendor contact
information for placing your order. List all the contact information
for the vendors of the components you installed on the Vendor
Contact Information form below in order to add it also to
your network documentation.
Wiring Kit Configurations
The Wiring Kits have been composed so you can mix and match
combinations of the four kits to achieve a variety of number
of outlets per classroom -- two, four, or six -- for modules
of four classrooms.
If you are using the Entry Level Design, you only have to
decide, say, on installing 2 or 4 outlets per classroom and
then ordering one Classroom Wiring Kit for each multiple of
4 classrooms you want to wire.
If you are using the Growth Design, order one Foundation
Wiring Kit to provide the rack and patch panel for the wiring
closet and the wiring for four classrooms. Then order one
Classroom Wiring Kit for each additional module of four classrooms
you wish to wire.
The flexibility of these kits allows not only different configurations
and placements of outlets in your classrooms now, but also
helps you form an expansion plan. You could, for example,
install a two outlet wiring kit now for a single computer.
Then, you could add a four outlet kit later for a work area
of four student computers elsewhere in the room and use the
existing outlets for a teacher's computer. So plan ahead when
you choose not only the number of outlets but also their placement
in each classroom.
The table below, for example, shows the number of classrooms
you would be able to wire with one Foundation Wiring Kit plus
the indicated number of Classroom Wiring Kits. Depending on
the number of jacks in the kit, the number of ports is also
shown. Note again you would only order one Foundation Wiring
Kit per school. For installations with more than 24 total
outlets (marked with an asterisk (*)), you will need to order
additional patch panels, line cords and patch cords from the
Superlist's à la carte menu.
WIRING
KITS |
CLASSROOMS |
2-JACK KIT OULETS |
4-JACK KIT OUTLETS |
| 0 |
4 |
8
|
16 |
| 1 |
8 |
16 |
32* |
| 2 |
12 |
24 |
48* |
| 4 |
16
|
32 |
64* |
The Wiring Kits have been specified to include plenum-rated
cable. If you know that you are not required by your local
building codes to use plenum-rated cable at your site, then
you may be able to save some cost by ordering a la carte from
the Superlist. This would be the case, for example, if all
the cabling were to be enclosed in raceway below the ceiling.
The extra expense of the pre-configured kit is a small insurance
price, however, against having a building inspector force
you to remove all the cable your volunteers have laboriously
installed. You would then not only be without the network
everyone worked for, but you would have a harder time attracting
future volunteers.
Make sure you have adequate wiring supplies and tools, from
whatever sources, as shown on the Tools and Supplies Checklist.
Component Selection Form
List of components ordered for NetDay:
Design Model: ____________________Date:____________
School: ________________________
No. Classrooms:_________No. Outlets per Classroom: ____
No. Labs: ______________No. Computers per Lab:________
| COMPONENT |
MIN |
QTY. |
| Foundation
Wiring Kit |
1 |
8
|
| Classroom
Wiring Kit |
1 |
16 |
| Network Electronics |
|
24 |
| Internet
Connection Equipment |
|
|
| Internet
Service |
|
|
| Server |
|
|
|
Additional Components:
|
Superlist Portion Wiring Components Selection
Form
| COMPONENT |
VENDOR |
NO. |
| Equipment
Rack - 72" |
|
|
Patch Panel
- 24 port
|
|
|
| Patch Panel
- 48 port |
|
|
| Patch Panel
- 96 port |
|
|
| Cat 5 plenum
rated UTP cable - 2,000' |
|
|
| Cat 5 plenum
rated UTP cable - 4,000' |
|
|
Cat 5 PVC
UTP cable - 2,000'
|
|
|
| Cat 5 PVC
UTP cable - 4,000' |
|
|
| Line Cords
- 7' Cat 5 UTP |
|
|
| Line Cords
- 10' Cat 5 UTP |
|
|
| Patch Cords
- 3' Cat 5 UTP |
|
|
| Patch Cords
- 5' Cat 5 UTP |
|
|
| Surface mount
raceway - 50' |
|
|
| Junction box |
|
|
| Faceplate
w/ inserts - two RJ-45 jacks |
|
|
| Faceplate
w/ inserts - four RJ- jacks 45 |
|
|
| Shelf
- metal, rack mountable |
|
|
Questions to Ask Vendors
General Questions
1. How does your company benefit from this and what do you
expect from my school as its role in the partnership? (Use
this as an as opportunity to inquire about offered discounts
and in-kind donations.)
2. What do you consider to be unique features of this product?
3. What makes your product easier to install and maintain?
4. What are the expansion options for this product?
5. Can it expand enough for our whole school?
6. What alternative similar products do you have and what
are the tradeoffs?
7. What capabilities beyond the baseline minimums might I
need?
8. What other components or services, continuing or one-time,
might I need?
9. Can I use this product with my AppleTalk or Novell network
as well as TCP/IP?
10. What higher speeds can I upgrade this product to?
11. What will cause this product to need replacement?
1. Wiring Kit
1. If the kits are for modules of four classrooms, won't I
have a lot of waste doing five (or 9, 13, 17, 21, 25, etc.)
classrooms?
2. Do I have to order kits if I know that I don't need plenum
rated cable?
3. Will I be able to order more of these kits in the future?
2. Network Electronics
1. Can I expand the number of ports to handle my whole school?
2. How would I speed up connections to the server or CD-ROM
server later?
3. Can I segregate academic and administrative networks?
3. Internet Connection Equipment
1. Under what circumstances should I order this from my Internet
Service Provider?
2. How can I get this re-configured or upgraded to a higher
speed Internet service?
3. Will this provide security filters to protect our school
network from hackers?
4. Internet Service
1. When will we need a higher speed service and can we upgrade
the Connection Equipment?
2. What is your record for network outages and how long have
they lasted?
3. What will you do if we have a security incident?
4. What education-oriented services do you offer beyond simple
connectivity?
5. Server
1. How will my Technical Specialist learn to manage this server?
2. Will I have to hire someone specially to manage this server?
3. What components of this server can we upgrade without disrupting
service for more than a few hours?
Vendor Contact Information Form
You should record the contact information from the NetDay
Web site, for information and for ordering, for the vendors
of the products you select. The information contact can also
tell you how to reach their technical support hotline. In
the future you or others will want to reach them.
1. Wiring Kit
Vendor:
Information:
Ordering:
Technical Support:
2. Network Electronics
Vendor:
Information:
Ordering:
Technical Support:
3. Internet Connection Equipment
Vendor:
Information:
Ordering:
Technical Support:
4. Internet Service
Vendor:
Information:
Ordering:
Technical Support:
5. Server
Vendor:
Information:
Ordering:
Technical Support:
Tools and Equipment Checklist
List of Tools:
__ At least two stepladders
__ Tape measures, 6' and longer
__ Wire cutters
__ Extension cords
__ UTP wire strippers
__ RJ-45 termination tools
__ Scissors
__ Pliers
__ Needle-nosed pliers
__ 110 block punchdown tool
__ Flathead screwdriver
__ Labels
__ Phillips-head screwdriver
__ Keyhole saw for faceplate mounting
__ Power screwdriver
__ Hacksaw
__ Power drills
__ Cellular phone (optional)
__ Drill bits for concrete, plaster or wood
__ Walkie-talkies (optional)
Personal Equipment:
__ Dust Masks for working above ceiling
__ Eye Protection
__ Gloves
Supplies:
__ Tie Wraps
__ Electrical Tape
__ Permanent ink felt tip markers
__ Cable clips
Installation Functions and Staff Requirements
The Project Manager of a NetDay school must determine the
number of people and types of skills required to carry out
the school's NetDay objective. We provide a methodology here
to help you assess your needs. At best, this provides guidelines
and reminders about the functions which are necessary. Individual
school installation specifics will require thoughtful adjustment,
of course.
Staff requirements and functions to be performed are organized
below according to network component category as with the
rest of this paper. Check the number of people and their skills
that you have signed up and match them with the requirements
you derive from the guidelines below. Then look for supplements
in needed skills from the NetDay Volunteer Committee, local
volunteers, corporate teams and other sources of help.
1. Wiring Kit
Staffing requirement guideline: 2 hours per jack
Functions and skills required:
Set up rack and patch panel
Pull cables from wiring closet to classrooms/labs
Install classroom raceway and junction boxTerminate cable
in classroom jack and install faceplate
Terminate cable in wiring closet patch panel.
2. Network Electronics
Staffing requirement guideline: 1 hour; additional 1 hour
if configuring for management
Functions and skills required:
Unpack and install in equipment rack
Plug patch cords between hub ports and corresponding patch
panel ports (preferably # X to # X)
Configure hub for management, if desired.
3. Internet Connection Equipment
Staffing requirement guideline: 1 hour
Functions and skills required:
Unpack and install in equipment rack
Plug patch cord between internal port of - Internet Connection
Equipment and patch panel port connected to network hub.
4. Internet Service
Staffing requirement guideline: May vary considerably; consult
supplier
Functions and skills required:
Configure address, routing and filters as provided by ISP
Connect external port of - Internet Connection Equipment to
Internet access line.
5. Server
Staffing requirement guideline: May vary considerably;
consult computer and software suppliers
Functions and skills required:
Unpack and physical installation
Install operating system, as required
Install and configure e-mail server software, as required
Install and configure WorldWideWeb server software, as required
Install and configure Domain Name Service server software,
as required
Plug line cord into wall jack and computer network interface.
6. Client Computers
Staffing requirement guideline: 1/2 to 1 hour per computer
Functions and skills required:
Install Ethernet network interface cards, as required
Load and configure TCP/IP networking software
Load and configure WWW browser software
Load and configure additional client software (e-mail, news
reader, etc.), as desired
Plug line cord into wall jack and computer network interface.
III. Network Documentation Guide
After you have installed the network in your school, you
come to the single most important step to perform -- documentation.
You will need documentation of your installation especially
if:
- There is a network operation problem
- The network is to be extended to additional outlets
- Equipment needs to be added, upgraded, or replaced
- You change Internet Service Providers and/or access line
types
- Security filters need to be added or changed on your router
- You want to create administrative and academic subnets
- Computers in the classrooms are upgraded
- Your server is upgraded
- New equipment, such as a CD-ROM server or a scanner, is
added.
The following documents should be included in your documentation
set:
- The checklist schedule as completed
- Cabling routing diagram on your school's floor plan
- Component selection form of the products you installed
- Vendor contact information
- Configuration information forms
Configuration information forms are provided on the following
pages. They are organized according to the categories of network
components we have used throughout this entire document for
ease of understanding and consistency. Duplicate pages as
necessary.
Make sure that the configuration forms are completed as soon
as the working configuration is completed. Our emphasis is
to urge you strongly not to allow this to be put off, or you
will run the risk that it will not be completed or inaccurate
information will be recorded. Documenting configurations should
be performed by whomever was responsible for performing the
configuration.
If you do not maintain accurate and complete documentation,
you will incur higher costs in the future when anyone has
to maintain or expand your network. You may also have a longer
period without service during a failure.
At least three copies of this documentation should be put
in small binders, and you should add the brochures of the
products you installed. Keep together one set of the product
manuals for more detailed reference information.
Distribute these network documentation binders to the Superintendent,
the Principal of the school, and the Technical Coordinator.
This document should be treated like a bank book and kept
in a secure place. N.B. Equipment access passwords are kept
in this documentation so you should be appropriately careful
about its security and distribution. You may wish to maintain
passwords separately (as on the last form of the documentation)
so you can provide configuration information to those with
a need to know without providing passwords at the same time.
Finally, documentation is living information that changes
every time something it records changes. Make sure you keep
it up to date when changes are made to your network.
School Network Documentation
School: __________________________________
Person(s) Responsible:______________________
Date:_____________________________________
Office Tel:_________________________________
Home Tel:_________________________________
Fax:______________________________________
E-mail:____________________________________
Contents
1. Cabling Jacks
2. Network Hub
3. Router
4a. Internet Service Provider
4b. Internet Access Line
5a. Server Computer
5b. Domain Name Server Software
5c. E-mail Server Software
5d. WorldWideWeb Server Software
6. Network Computers
7. Additional Passwords
1. Network Cabling Jacks: Wiring Center Location
in Building
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PATCH
PANEL
PORT NO.
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2. Network Hub
Make and Model:
Serial Number:
Service Contract:
Tel: _________________________________
Fax: ________________________________
E-mail: ______________________________
IP Address: ___________________________
Subnet Mask: _________________________
Ethernet Address: ______________________
Passwords:
Access Level: ________ Read: ________ Password:
________
Acces Level: ________ Write: ________ Password:
________
3. Router
Make and Model: _____________________
Serial No.: _____________________
Service Contract: _____________________
Tel: _____________________
Fax: _____________________
E-mail: _____________________
Ethernet Address: _____________________
IP Address: _____________________
External Port: _____________________
Subnet Mask: _____________________
Internal Port: _____________________
Subnet Mask: _____________________
Passwords:
Telnet: _____________________
Access Level: ________ Read: ________ Password:
________
Acces Level: ________ Write: ________ Password:
________
Syslog:
Host: _____________________
Facility: _____________________
4a. Internet Service
Internet Service Provider: _____________________
Address: _____________________
Customer Support Contact: _____________________
Tel: _____________________
Fax:
E-mail: _____________________
Dedicated Port? Y / N
IP Network No.: _____________________
Subnet Mask: _____________________
Domain Name: _____________________
Domain Name Servers:
Primary: _____________________
Secondary: _____________________
Mail Server:
Name: _____________________
IP Address: _____________________
WWW Server:
Name: _____________________
IP Address: _____________________
4b. Access Line
Access Line Provider: _____________________
Service Contract: _____________________
Tel: _____________________
Fax: _____________________
E-mail:_____________________
Access Line Provider: _____________________
Service Contract: _____________________
Tel: _____________________
Fax: _____________________
E-mail: _____________________
Dial-up Line:
Tel: _____________________
Baud: _____________________
Parity: _____________________
Data Bits: _____________________
Stop Bits: _____________________
Flow Control: _____________________
Timeout: _____________________
ISDN Line:
Switch Type: _____________________
Tel. No. Ch. 1: _____________________
Tel. No. Ch. 2: _____________________
SPID Ch. 1: _____________________
SPID Ch. 2: _____________________
Timeout: _____________________
Dedicated Line:
Type: _____________________
Bandwidth: _____________________
Framing: _____________________
Encoding:_____________________
No. DS0 Channels: _____________________
5a. Server
Computer Make and Model: _____________________
Serial No.: _____________________
Support: _____________________
Tel: _____________________
Fax: _____________________
E-mail: _____________________
IP Address: _____________________
Subnet Mask: _____________________
Ethernet Address: _____________________
Ethernet Vendor: _____________________
RAM: _____________________
Disks: _____________________
Bus: _____________________
Passwords:
User: ________ Root: ________ Password: ________
User: ________ Sys: ________ Password: ________
Operating System Brand: _____________________
Model: _____________________
Serial No.: _____________________
Support Contract: _____________________
Tel: _____________________
Fax: _____________________
E-mail: _____________________
5c. Domain Name Server
DNS Program Path: _____________________
Version: _____________________
Hosts File Path: _____________________
Password:
User: ________ Sys: ________ Password: ________
5c. E-mail Server
Mail Server Software: _____________________
Protocol: _____________________
Version: _____________________
Serial No.: _____________________
Support Contact: _____________________
Tel: _____________________
Fax: _____________________
E-mail: _____________________
Mail Server Program Path: _____________________
Passwords:
User: _______ Postmaster: ________ Password:
________
5d. Web Server
Brand: _____________________
Model: _____________________
Serial No.: _____________________
Support Contact: _____________________
Tel: _____________________
Fax: _____________________
E-mail: _____________________
Web Server Program Path: _____________________
Passwords:
User: ________ Webmaster: ________ Password:
________
6. Network Computers
IP Addresses: _____________________
Subnet Mask: _____________________
Gateway: _____________________
Domain: _____________________
Mail Server: _____________________
WWW Server: _____________________
TCP/IP Vendor: _____________________
WWW Browser Installed: _____________________
E-mail Client Installed: _____________________
7. Additional Passwords
School Network Design and Installation
Guide
© 1997 Mass Networks Education Partnership, Inc.
Site Preparation Task Force
James A. Warner, Jr., Chair
M assachusetts Telecomputing Coalition
Paul Mentzer, Anixter
Mark Tabor, Panduit
Pete Hanson, IBM
Dena Lehman, Boston Edison
Dan Kehoe, Merrimac Education Center
Earle Hancock, Minuteman Science-Technology High School
Martin Huntley, BBN
Carl Derner, 3Com
Chris North, Net Daemons
Doug Faria, CCR
Maurine Turcotte, Thomas & Betts
Chris Ciandella, Anixter
Justin LaPierre, Microsoft
Tom Hanlon, Champlain Cable
Jerry Verzino, Pacer Electronics
Other Contributors
Michelle Gardner, IBM
Scott Goodrich, CCR
Jerry Coffey, Digital Equipment
Sue King, Berkshire County Chamber of Commerce
Patrick Wright, Cisco
Joe Dallatore, Cisco
Mike Turzanski, Cisco
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