Acme WAN Design1

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Oct 26, 2013 (3 years and 9 months ago)

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Acme WAN Design

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Acme WAN Design

Bradley Monninger

University of Phoenix










Acme WAN Design

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Acme WAN Design

Introduction


After reviewing the system requirements that were outlined in Appendix A, I have determined
that the Acme Company would need to deploy a WAN to interconnect their sites in, which are
located in the U.S., as well as China. Furthermore, these sites consist o
f the company’s
headquarters, as well as their engineering department, which are both located in Atlanta,
Georgia. In addition, the company also has three distribution centers that are located in Chicago,
Phoenix, and New York, while having their manufactu
ring plant located in China. Even though
these sites are located in diversely different locations, the need to
keep all of the sites connected
is important, since this would allow each of the company’s sites to communicate
between one
another
. By doing thi
s, each of the company’s sites would have the ability to carry
-
out video
conferencing or
voice calls
, which would essentially enable the company to perform their weekly
meetings
more efficiently
by allowing each
of the
site
s

to connect remotely. On
-
the
-
oth
er
-
hand,
the company
would also need

to establish a secure infrastructure in, which would require each of
the company’s departments to be grouped
together
logically in an attempt to
maintain security.
Nevertheless, these needs could not be addressed proper
ly without the incorporation of new

networking

equipment to perform the company’s
communications
, while at the same time
implementing
an

effective
means
to transfer

data betwee
n each of the company’s
locations
through the use of a dedicated data line. Ther
efore, I will discuss the fundamentals of the Acme
WAN design in further detail by outl
ining the protocols, as well as
components needed to
establish a
functional

networking system that w
ould

essentially

allow the company to carry
-
out
its operations
more
e
ffectively.


Acme WAN Design

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Logical Network Platform

and Connection Types


Based on the company’s need to organize their network logically, I have designed a diagram
that illustrates the distinction between each of the company’s departments in the sense that each
site is characterized by its class, which in
-
turn could be used to assign specific rights or
privileges to each
of the company’s
department
s
. As a result, thi
s would increase the level of
security for the network as
-
a
-
whole, since one could monitor, as well as maintain the WAN
based on each department’s required use of the network. Furthermore, this can be better
conveyed by reviewing
Figure 1 below, since it
p
rovides a visual overview of the recommended
WAN configuration
being proposed
.



Figure 1

Logical network diagram

Acme WAN Design

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Even though the diagram above provides a general idea of how the WAN would be designed,
the ability for each

of the network’s loca
tions
to connect
one another
, as well as the
method
s that
are used

to transfer data amongst the network would have to be based on each site’s role
within
the company
. By doing this, the use of different types of network
ing

technology would have to
be
imple
mented

into the
network’s

design, since this would enable the network to

function in the
manner that the company demands
.
Nevertheless
,
each
site

would communicate with one another
through the use of a distributed WAN configuration, which would essentially allow each site to
operate

independently from the
one another

in the event of a
complete
network failure due to
the
fact that
each site
would ha
ve

its own server or database system.
To accomplish this
, the
connection methods for each
of the U.S. based
site
s

would be
handled
via

T1 lines
, which it
-
turn
would allow both voice, as well as data communications to be possible throughout
all of
the U.S.
based

sites
. However, to enable the company’s manufacturing plant that is located in China to be
able to
function in a similar fashion
, the use of a
satellite connection would need to be
established in order to
make it possible for

data to be transferred b
etween the company’s
headquarters and the manufacturing plant in China. By doing this, the manufacturing plant would
have to communicate directly with the
company’s
headquarters in order to
communicate with the
rest of the company’s sites, since the headqu
arters location would be the only site other than the
China location to be fitted with a satellite connection
.

Recommended Telecommunications System


Based on the proposed WAN design, the recommended telecommunications system for the
Acme Company would

be
that of
the VoIP system, since this format would

provide

a
low
-
cost,
as well as
efficient means
of communicating amongst its geographically diverse locations
. In
addition, the VoIP setup would enable the company to utilize their T1 lines, since it woul
d allow
Acme WAN Design

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them to conduct both voice communications and video conferences
between

all of their sites.
Furthermore, the VoIP
system would eliminate the need for the company to have to pay toll
-
charges on both
of their
domestic and international

calls
, since VoIP technology uses the Internet
Protocol to carry
-
out its task via the Internet instead of using the conventional land lines as in the
PBX system. All
-
in
-
all, the
use of the VoIP configuration would allow the company to make and
receive its phone

calls in a digital format, since both th
e company’s

data network and their voice
network
would be
combined into a single T1 connection.

IP Address Scheme


For the Acme Company’s network, I recommend that a class B IP addressing scheme be used
in order

to meet the needs of the company’s various sites, as well as the number of host
s

that
w
ould
be needed
at

each
of the
network location
s
. As a result, the company w
ould
be able to
operate their network using an IP address range from 128.0.0.0 to
191.255.255
.255
, which would
essentially allow the
company to maintain 65,000 hosts that
would be able to operate

on 16,000
different networks. By doing this, the company would be able to designate each site with
its own
IP addresses
, which would
essentially
make it
easier to classify each of
the company’s

network
locations. In addition, the company would also be able to assign various subnets to its networks
in an attempt to increase the number of available
IP addresses that could be used. As a result, the
company wo
uld need to use a default subnet mask of 255.255.255.0, since this subnet mask
would permit the company to operate on 254 subnets with the ability access 254 hosts per
subnet. By doing this, the range of subnets that the company would have available would
be
from 255.255.0.0 to 255.255.255.255. However, each subnet, as well as network would have to
designate one IP address for its broadcasting address in, which would be the network number of
the IP address, as well as the last host number for that IP addres
s.
As a result, this would reduce
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the number of available hosts for each subnet by two, since one host address is used for
classifying the host, while another
host
is used to designate the subnet’s broadcast
ing

address.
Nevertheless, the use of this IP add
ressing scheme would be sufficient for the company, since
it
would provide a
number of networks, hosts, and subnets
that
would meet
the company’s

existing, as well as future networking needs.

VLAN Configuration


Due to the company’s logically organized network, the use of a VLAN would be
need
to
be
established to allow

the company’s networks to function as if they were connected
in a physical
format
, which is due to the company’s sites being located
on differ
ent broadcast domains, as well
as
in
different geographic
ally located areas
. Nonetheless, these sites could be
structured

logically
by
designing

a VLAN that manages each of the company’s department
s

based on their port
numbers. By doing this, one would be
able to control or manage each department’s network from
a central location. In addition, the company would also be able to designate various rights to each
of its
department
s
, since
the ability to classify them by groups

would enable the company to
implem
ent a higher
-
level of control over their WAN
.

Network Equipment Requirements


Based on the discussed network proposal, the need to implement various types of equipment
would be needed
in order
to get the network up
-
and
-
running. Therefore, each of the company’s
U.S. based sites would all need to have a CSU/DSU installed to allow the T1 connection to be
able to be
accessed effectively, which in
-
turn would also allow the
company to utilize the
netw
ork’s telecommunication services as well
. After the CSU/
DSU is installed, a multiplexer
would

also

need to be implemented
into
each of the U.S. locations, since this would enable

the
telephone systems to
be able to
operate through the T1
lines
.
Furthermore
, a router, as well as

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PCM encoder would need to be incorporated into each of the U.S. based sites in order to meet
the network component requirements needed to access the T1 connection successfully. However,
the company’s headquarters, as well as the manu
facturing plant
that is located in China would
both
need to have a satellite dish installed, which would also require a satellite
WAN module

as
well

in order to
permit

the satellite to transmit and receive data
between the two sites
. Once these
components
are installed, the last item to
install in order to get the

China location operational
would be

that of

a router and a VoIP convertor, which would essentially complete the network
components
that were needed

in order for the company
to carry
-
out both
its
data and voice
requirements.


On
-
the
-
other
-
hand, it would be beneficial for each of the company’s sites to have wireless
network access available for use, since this feature would permit mobility throughout the
network. By doing this,
one would be abl
e to access his or her laptop to carry
-
out video
conferencing, which would deem very useful when conducting the company’s
weekly meetings.
Even though there are additional components that could be further explained, the ones that were
already mentioned
wou
ld satisfy

the basic
components

that are
needed to establish the
company’s WAN

at all of its locations
.


Router Protocols


The various router protocols that would be used in each of the WAN’s sites would enable the
network to operate both efficiently
, as well as effectively, since they are used to carry
-
out error
checking tasks, point
-
to
-
point connections, and
would also allow

the network to be maintained
based on the company’s system requirements. As a result, the company would need to
incorporate th
e designated WAN protocols into their routers, which are PPP, HDLC,
and
the
Frame
-
Relay

protocol
. Even though these are only the three basic
routing
protocols, they are
Acme WAN Design

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essentially the most significant, since these routing protocols
are

required

in order
f
or

data to be
transferred throughout the network.

Wireless Technology Recommendations


As previously stated, the company would benefit from the use of Wi
-
Fi accessibility
at

each
of its network locations, since wireless technology would promote flexibi
lity in regards to how
the network is constructed at each site, as well as the capabilities that could be achieved by
allowing the network’s users to be able to use their laptops to connect wirelessly. By doing this,
the network’s users would be able to be

more productive in the sense that they could access the
network from any point within the building, which would particularly be a significant quality
when
they are
conducting video conference
s

over the company’s network. As you an imaging, it
would be dif
ficult to carry
-
out a meeting if all of the company’s employees were unable to meet
in their site’s conference room due to the lack of wireless network access. Nonetheless, the
addition of wireless access
-
points, as well as wireless NICs would be necessary

in order to
establish the basic
fundamentals for deploying a Wi
-
Fi ready system
at

each
location
.
Nonetheless,

by deploying a wireless network within each of the company’s sites, the need to
consider network security would
also
be essential, which is
discussed further in the network
security section of this proposal.

Network Security


Securing the company’s network is a challenging task; however, this could be accomplished
by incorporating the necessary security elements into the ne
twork in, which
are designed to
prevent

network

intrusion
s

from outside entities, as well as to prevent an attack from a potential
internal source. Therefore, I recommend that the company establish WPA encryption on each of
its wireless systems, since
this

would prevent a
n outside source from viewing the information

Acme WAN Design

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being

transmitted

throughout the wireless network. In addition, the company would
also
need to
implement a security policy in, which would require its users to abide by a
series of
strict
rules
regarding networ
k use

that are designed to prevent user account information from being obtained
by unauthorized individuals, as well as to prevent security breaches from occurring by restricting
the actions that
could

c
ause
vulnerabilities

to transpire

with
in the network.



Nevertheless, the most important security elements that should be included in the WAN’s
design are an effective anti
-
virus software, as well as network monitoring tool
, which would
need to be updated on a constant basis. In addition, the company wou
ld also need to

incorporate
a
n

advanced firewall for each of
its
sites.
However
, the use of dynamic routing, additional user
identification methods, URL filtering, policy
-
based integrity enforcement, file
-
level encryption,
user
-
rights management, a good in
trusion

detection system, an effective physical, as well as
logical security platform, restricting the use of unnecessary ports from being used, and various
other security features

would also need to

be incorporated into the proposed WAN, since these
secur
ity elements, as well as the various other in
-
depth security mechanisms would increase the
overal
l effectiveness of the network
. Even though I have provided a good number of essential
security recommendations, the need to adjust these security recommendati
ons over time is
important, since the methods used by intruders
are

constantly evolving. As a result, one would
need to enhance his or her network
accordingly

in order to protect the network’s operational
status, as well as the data that it contains
safe f
rom corruption, theft, or loss
.


Conclusion


After reviewing the needs of the Acme Company in regards to their WAN requirements, I
have designed the proposed WAN design above in an attempt to allow the company to maintain
both data and voice communications throughout their geographically diverse

locations in, which
Acme WAN Design

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would enable the company to connect to each of its sites via a centralized network that is made
up of both T1 lines for its U.S. locations and a satellite connection for its remote location in
China. By doing this, the company would be

able to carry
-
out its weekly meetings either through
a voice conference or by conducting their meetings via video. Nevertheless, both of these forms
of communication would be performed over the same network, since the sites that are located in
the U.S. wo
uld utilize the T1 connection that combine
s both data and voice services o
n one line.
Even thought the manufacturing plant in China would only be able to connect to the WAN via a
satellite linkup, the
technology that was selected is necessary for communica
tions to be
established with the company’s headquarters, which is due to the lack of leased lines

that are
needed

to connect
the two sites
.
As a result
, the use of the VoIP system was selected for the
proposed WAN, since this system would allow both voice
and video communications to occur
between each of the sites.
By doing this
, the company would be able to perform its
communication needs in a digital format, which in
-
turn would also result in a more cost efficient
means of communicati
ng

across
over

long d
istances.


Furthermore, the company’s concern about the network’s security would also be manageable
through the use of VLAN, which would essentially allow the network to be organized logically.
Along with this
configuration, as well as the various sec
urity mechanisms that were outline
d

in
this proposal, the company would
be able to
benefit from a secure networking infrastructure,
which would enable the network’s users to operate within the WAN without having to worry
about their data being monitored
by

an outside source. As a result, this proposed level of security
contributed to the concept of incorporating a wireless interface into each of the company’s
network locations, since this feature would enable
the network’s user to be more productive in
thei
r work.

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References

Regan, P. (2004).
Wide Area Networks
. Retrieved from

http://ecampus.phoenix.edu



International WAN Bids.

(2008).

Wide Area Networking Technical Review
.

Retrieved from
http://www.internationalwanbids.com/international
-
wan
-
technical
-
review.shtml


Waring, B.

(2010).

How to Secure Your Wireless Network
.

PC World.

Retrieved from
http://www.pcworld.com/article/130330/how_to_secure_your_wireless_network.html


Wikipedia.

(n.d.).

Virtual LAN
.

Retrieved from http://en.wikipedia.org/wiki/Virtual_LAN