Transport Network Design: Models, Scalability, and LAN Devices

Desklib provides solved assignments and past papers to help students succeed.

Transport Network Design

Contents
Introduction.................................................................................................................................................3
LO1.............................................................................................................................................................4
P1 Examine the network design models and features of scalable networks based on a given set of
business needs.........................................................................................................................................4
P2 Discuss LAN redundancy, bandwidth, and load related issues and possible solutions with reference
to Layer 2 and Layer 3 of the OSI Mode.................................................................................................7
LO2.............................................................................................................................................................8
P3 Select LAN devices based on features and requirements and apply basic configuration commands
for network connectivity..........................................................................................................................8
Conclusion...................................................................................................................................................9
References.................................................................................................................................................10

Introduction
Transportation Network Design typically aims at the setup of the networks to obtain a specific
goal. The major goal of the Transportation Network Design is to choose from a mentioned group
of objects while using the resource without going out of the limitations. In the document below,
the pros and cons of the Transport Network Design are tried to be talked about. In the course of
the document the learners would be having the ability to perform the jobs like going through and
understanding the principles of LAN designs and having knowledge of the applications of it in
the network designing processes, implementations of the networks by the use of the principles of
LAN designing, creation of exact solutions of WAN. Gaining the solutions for the range of
issues associated with the network with the usage of the right methods of troubleshooting.

LO1
P1 Examine the network design models and features of scalable networks based on a given
set of business needs.
Below mentioned are the various designing models (Rahimi and Askari, 2016).
1. Hierarchical Models- It is defined as the network designing model that can be held to
take the responsibility for breaking one big network into multiple short networks that can
be managed in a proper way which can be considered as better than the bigger network
from which these networks are being obtained.
2. Three-Tiered Models- The “Three Tiered Models” are typically having the usage in
large enterprises of the network in various campuses. This network is created via blocks
of multiple functional distributional layers.
(Source: Kartsakli, et. al., 2014)
3. Two-Tiered Models – These models are the type of models that are known to be most
suited for small sized campus network that is basically below 3 blocks of the functional
distributional layers. In these models, the central and the distributions are brought
together in the form of a single layer (Rahimi and Askari, 2016).

(Source: Gupta, et. al., 2017)
4. Modularity Designing Models - These models are gained by the usage of applications of
hierarchy models surrounding the variety of blocks of the networks of the enterprises of
the campuses. Due to these processes, these models are known to be better scalable in
comparison to the other models (Rahimi and Askari, 2016).
(Source: Network Direction, 2018)
Below mentioned are the characteristics of scalable networks (Gupta, et. al., 2017).

1. Software - One of the key features that the scalable systems must always possess is to
have a movement from the small to large softwares in order to take full advantages of the
systems in order to perform better, the systems must always have the support of many
platforms.
2. Hardwares - The gadgets that are having usage in scalable systems should always have
the capability to be recognized uniquely. The device should be cabled to the system that
is available the backend in a secured way as the relayed information is typically very
private.
3. Network - One of the major characteristics of the scalable networks is that they should
be having the capability of adaptations in a situation of systematic failures and also
having the capability to perform efficiently till the failures are resolved (Gupta, et. al.,
2017).

P2 Discuss LAN redundancy, bandwidth, and load related issues and possible solutions
with reference to Layer 2 and Layer 3 of the OSI Model
The issues associated with LAN redundancy, bandwidth, and load (Liang and Fu, 2016):
1. Broadcasting Storms- At some instances, the switches move the broadcasting frames in
a forward direction that are created via some other devices, to all the ports that they are
having. If no schemes have been introduced to prevent this loop, then, in that case,
infinite broadcasting will flow throughout the networks.
2. Redundant Copies – Another one of the problems that might come up while the LAN
redundancies, is that the devices might contain multiple copied documents of a similar
frame. The phenomenon might take place after different frames come via different
fragments but simultaneously.
3. Failures in Optimizations of Bandwidth Usages – After the testing site is being
created, the complete organizations are relied on over the LAN environments. This isn’t
known to be one of the large concerns by many industries as addition of multimedia files
of large size does not affect the Local Area Networks, but if the clients are using the
websites from their own adaptations, then that may be having some unavoidable concerns
that can be the optimizational failures of usages of the bandwidths ((Liang and Fu,
2016)).
Solutions
There are various solutions that can be used in order to solve these problems, these solutions
include the usage of the online tools such as the Snippet tool; it is a web application that is
used widely all around the globe, along with some supporting tools like Google Analytics.
This tool does not solve the problems but reduces them to a point. There also are some
problems that might not be resolved via the use of these tools and those issues are supposed
to be resolved manually by the developers.

LO2
P3 Select LAN devices based on features and requirements and apply basic configuration
commands for network connectivity.
Below mentioned are the Local Area Network gadgets that could be used for the application of
basic commands of network connection (Mishra, et. al., 2012).
1. Hubs: A hub is known to be some of the oldest kind of LAN device; it is having the duty
of giving the processes for cabling more to the network device by the means of a single
device. The greatest advantage of the usage of it is that if the individual signal is cabled
to every signal that is being arrived from every device will echo to all the other cabled
devices.
2. Bridges: Prior to the introductions of the bridges, there was a very urgent and important
requirement of differentiation between the multiple networks from one another at the
physical layers and that is where the bridges were brought to the introduction. The
bridges are having a duty of giving the mechanisms that allow the connectivity among 2
networks cabled on 2nd layers to happen, but along with avoiding the reflecting the
traffic on the physical layers.
3. Switches (2nd Layer): It is having the responsibility for giving the function similar to the
functions of the bridge but in the same form factors just as the form factors of the hubs.
Every port that is available on the switches give the variety of collision domains and is
often cabled to just a single-ended device.
4. Routers: The routers are defined as 3rd layer devices that allow the loads to go from the
2nd layer of networks to another 2nd layer of networks. This condition of a couple of
networks on similar layers takes place when the device is responsible and the amount of
traffic is limited.
5. Switch (3rd Layer): The layer 3 networked switches are almost same as the routers and to
differentiate among the two is a very difficult job to do, on a superficial level they might
be portrayed exactly same as each other. The one huge functionality that differentiates
both of these devices is an interface which is compatible too by the two of the gadgets but
the net throughput present along with the number of compatible characteristics are very
different in both of them.

Conclusion
In the document above, the pros and cons of the Transport Network Design are tried to be talked
about and discussed. In the course of the document the learners would be having the ability to
perform the jobs like going through and understanding the principles of LAN designs and having
knowledge of the applications of it in the network designing processes, implementations of the
networks by the use of the principles of LAN designing, creation of exact solutions of WAN.
Gaining the solutions for the range of issues associated with the network with the usage of the
right methods of troubleshooting.

References
 Kartsakli, E., Lalos, A., Antonopoulos, A. and Tenina, S., 2014, A Survey on M2M
Systems for mHealth: A Wireless Communications Perspective. International Journal of
Computational Intelligence Research. 14(10). Pp. 244-250
 Gupta, A., Christie, R., and Manjula, R., 2017, Scalability in the Internet of Things:
Features, Techniques and Research Challenges. International Journal of Computational
Intelligence Research. 13(7). Pp. 1617-1627.
 Network Direction, 2018, Modular Network Design. [Online]. Network Direction.
Available at: https://networkdirection.net/articles/network-theory/modularnetworkdesign/
[Accessed on 21 May 2019]
 Rahimi, I. and Askari, M., T., 2016, Development Model for Supply Chain Network
Design by Demand Uncertainty and Mode Selection. International Journal of Applied
Operational Research. 6(1). 51-64.
 Liang, H. and Fu, K., W., 2016, Network Redundancy and Information Diffusion: The
Impacts of Information Redundancy, Similarity, and Tie Strength. Communication.
46(2). Pp. 1-5
 Mishra, S., Jena, L. and Pradhan, A., 2012, Networking Devices and Topologies: A
Succinct Study. International Journal of Advanced Research in Computer Science and
Software Engineering. 2(11). Pp. 347-357