Network Design and Troubleshooting

Running head: NETWORK DESIGN AND TROUBLESHOOTING
Network design and troubleshooting
Name of the Student
Name of the University
Author Note

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NETWORK DESIGN AND TROUBLESHOOTING
Table of Contents
Introduction......................................................................................................................................2
Table 1: Department details and the access rules............................................................................2
DMZ configuration..........................................................................................................................4
CLI for multilayer switches...........................................................................................................10
CLI for router.................................................................................................................................11
CLI for switch................................................................................................................................14
Configuration Table for subnet......................................................................................................14
Network configuration...................................................................................................................15
Configuration for switch................................................................................................................18
Conclusion.....................................................................................................................................25
Bibliography..................................................................................................................................26

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NETWORK DESIGN AND TROUBLESHOOTING
Introduction
Network engineer is a person that focuses entirely on determining the network
performance. As a network engineer it is the responsibility to implement the requested design so
that it can ensure better performance. The main focus of ITT directors is on determining that
proper scalability, availability is being provided towards the customers. The network
infrastructure is being implemented and designed within the organization with the help of private
IP address 192.168.168.0/24 within LAN. The main concern is too ensuring proper security
within the system so that it can provide better support. On the other hand the wireless network
IP address is 10.11.12.0/24. The network of alm.co.uk is being designed with the use of four
servers, web, email, common file server, dns and all the servers that is being shared between all
the common users. In order to understand the distribution of workstation table 1 is being
described in the later part of the report.
Table 1: Department details and the access rules
Dept. Devices Access Rules
1 48 Computers one printer Users cannot access any other department
2 18 Computers one printer Users cannot access any other department
3 11 Computers one printer Users cannot access any other department
4 68 Computers one printer Users cannot access any other department

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NETWORK DESIGN AND TROUBLESHOOTING
After analyzing the above case study it can be stated that there is a need to perform
preliminary investigation so that it becomes easy to understand the performance of the current
network design. The network design is being carried out for the purpose of designing and testing
the functionality of the network. For analysis purpose packet tracer is being used. In order to
create a small network for the alm.co.uk the hierarchical network topology was being developed
that is known as the collapsed model. The main reason behind using this model is that it helps in
maintaining proper scalability, reliability, security, maintainability, redundancy and also ensures
that high performance is being obtained with the use of this topology. The main components of
using network design is to determine whether the developed network offers enhanced
performance, better reliability and ensures that the cost has been reduced. In order to identify the
ill defined problem network illustration design is being used.
For the purpose of creating the network design of the above mentioned scenario 7
switches of layer two models was inserted into local area network. The network contains 2960
switch 2p layer 2 switches and 3560 multilayer switch 24 p, 2811 series router.

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NETWORK DESIGN AND TROUBLESHOOTING
Apart from all these the network design is being implemented with three different types
of networks. This includes LAN, MAN and WAN. Local area network is being used for the
purpose of controlling the transmission that takes place within the single organization. This
ensures that proper communication is being performed between the digital devices and similar
devices. Moreover the transmission range of a LAN can get from 1 bit to 1 million bits per
second. LAN transmission is being developed in such a way within the network so that it can
provide better reliability with high speed access over the data. According to different researches
and IEE it has been observed that the local area network is differentiated from different types of
data network and used mainly for the purpose of providing better and enhanced communication
within small area. Small area can be warehouse or a building that relies entirely on physical
communication channel. The main reason behind relying on physical communication channel is
that it offers reliably low error rate. Beside this several authors stated that LAN has been
emerged as a result of two different technologies that are combined together.
DMZ configuration
!===DMZ Config
!=== Router config // this is used for configuring the router
!===
!===
!Vlan 10 = 192.168.168.0 255.255.255.128 0.0.0.127 // this is used for explaining that the
subnets that comes under this ip address.
!Vlan 20 = 192.168.168.128 255.255.255.192 0.0.0.63

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NETWORK DESIGN AND TROUBLESHOOTING
!Vlan 30 = 192.168.168.192 255.255.255.224 0.0.0.31
!Vlan 40 = 192.168.168.224 255.255.255.240 0.0.0.15
!Vlan 50 = 10.11.12.0 255.255.255.0 0.0.0.255
en
conf t
!
no access-list 110 // this is used for removing the firewall configuration that was blocked by this
component
no access-list 120
no access-list 130
no access-list 140
no access-list 150
no access-list 160
!
!
!vlan10