Designing a Redundant Voice over IP System for Corporate Networks

In this assignment, students are tasked with designing a Voice over IP (VoIP) network to enhance business communications using Cisco technologies. The project involves several key components: understanding the basic principles of computer networking as outlined by Kurose and Ross, implementing Quality of Service (QoS) for prioritizing VoIP traffic, ensuring network redundancy to prevent downtime, and configuring DHCP settings specifically for a VoIP system. Students will apply their knowledge to create a secure, efficient, and reliable VoIP network, addressing business requirements through detailed analysis and design principles. References include foundational works on computer networking, broadband wireless communications, and specific Cisco documentation on VoIP configuration. The assignment culminates in the successful deployment of a VoIP setup that supports uninterrupted communication within an organization, emphasizing the importance of redundancy, QoS, and proper network design.

NETWORK PROJECT

Table of Contents
1. Company Business Requirement..................................................................................................2
2. Company Technical Requirement.................................................................................................2
3. IP phones.......................................................................................................................................2
4. Purpose of WAN Based on QoS....................................................................................................3
5. Redundant Services in case WAN Failure.....................................................................................3
6. Network Testing............................................................................................................................3
7. Data transfer Services...................................................................................................................4
8. Network Design.............................................................................................................................4
9. Network Components...................................................................................................................5
10. VOIP Configuration using Routers............................................................................................6
References..........................................................................................................................................23
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1. Company Business Requirement
The business requirement for petrochemical company is depends on business goals and
constraints. It uses the voice over IP phone services. The business requirement is used to determine
the business needs and measures the business progress. The business requirement is used to,
 Improve the voice over IP communication
 It provides the productivity and security
 It offers he goo customer services and support.
 It enhanced the business performance and business needs.
The business requirements need to be determine the customer requirements and needs. The
business goals and constraints are based on the business metrices and needs [1].
2. Company Technical Requirement
The technical requirement is based on the company technical goals and constraints. The
technical requirements are commonly collect and analyse the business and technical goals for an
organization. It meets the organization needs and measures. It is used to deliver the high
productivity of the communication over the IP phones. The technical requirements are used to
resolve the network problems by implement the existing network design. It determines the delay
and response time requirement packet loss requirement, jitter requirements and bandwidth
requirements of the network. The technical requirement provides the following network
performance for petrochemical company [2]. These are usability, manageability, availability,
affordability and security of the network.
3. IP phones
The Proposed network design use the more than 100 IP phones to communicate the client and
servers. It provides the high reliable, secure communication and consistent services to all employees.
The IP phones are used to transmit the voice communication through IP network by using the
Internet protocol. The cisco IP phones are used to realize the organization security, resilience and
scalability. the IP phones using the VOIP system to convert the voice calls into packets of data by
using IP network. It reduces the operational costs and maintenance costs [3]. It improves the
productivity and enhancing the organization collaboration.
4. Purpose of WAN Based on QoS
The Quality of Services provides the various features for WAN network. It is referring to the
capability of a network to provide the better services like frame relay, Ethernet and 802.1 networks,
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IP routed networks and asynchronous transfer mode. The goal of quality of service to provide the
network priority for WAN network including latency, dedicated bandwidth and controlled jitter. It
improved the loss characteristics [4]. The QoS services is a necessary for WAN wired and wireless
network infrastructure and it ensures the high voice quality. It basically has the real-time traffic and
data traffic like delay time, packet loss and voice. The quality of services manages the wireless LAN
buffers and reduces the packet loss and delay variation. The Quality of services based WAN and
WLAN has the three main areas such as interface queuing, traffic classification and bandwidth
provisioning. These are used to reduce the network traffics.
5. Redundant Services in case WAN Failure
The WAN failure is main problem in a network. To resolve the WAN failure by using the WAN
link redundancy. The WAN link redundancy is used to provide the reliable network connectivity and
access to headquarters resources [5]. It uses redundancy technologies to connect the business units
and vendors. It uses the active and passive configuration and inverse multiplexing and redundant
router to resolve the WAN failure. It is major part of the VOIP services. It reduces the communication
down time. It enhanced the VOIP connectivity.
6. Network Testing
To test the proposed network by follows the below step.
 Click on PC.
 Choose the command prompt.
 Enter the IP address to ping the network in Command prompt or Enter the IP address in web
browser.
 After view the results [6]. It provides the network connection information.
It is shown in below.
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7. Data transfer Services
Data transfer services are impacted to voice services because the voice services are delivers the
multimedia sessions and voice communication via IP networks. If offers the technical business
models that provide the legacy telephone network for an organization [7]. The voice services are
used to provide the easy internal voice calling over the VOIP system. The voice services are ensuring
the data transfer services by allowing the IP networks to create a phone calls. The voice services are
more sensitive than data transmissions.
8. Network Design
The Petrochemical proposed network infrastructure is shown in below.
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The proposed network design for petrochemical company provides the reliable communication
between the clients and server. The current network system uses the voice services. It does not
provide the effective communication [8]. So, the organization team decided to create the new
network design for petrochemical company. It uses the VOIP phones to provides the voice over IP
services for clients and server. The Proposed network design provide the effective and reliable
communication services for an organization. It also uses the cisco network components to reduce
the maintenance and operational costs. It gives the high efficiency and scalability of the network.
The VOIP services is used to provides the secure communication between the clients and server. The
proposed network infrastructure network components are listed below.
 Application server
 Switches
 Routers
 IP phones
 VOIP device
These are connected with each other. The router connected the all devices. The Cisco routers
provides the security and efficiency of the network. The Cisco IP phones are easily communicated
with clients and server. It provides the availability of the network [9].
9. Network Components
The Proposed network design hardware and software components are listed below.
The Hardware components are listed below [10].
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Network devices Number of Devices
Cisco Routers 2
Cisco Switches 2
Cisco IP phones 2
Cisco VOIP devices 2
Cisco Application Server 1
Dell Computers 2
The Software components are listed below.
Network devices Number of Devices
Operating System Windows 7
Memory 2 GB RAM
Hard Drive 2 GB
The Network selected network components are providing the effective network. The cisco
products are maintaining the network without requires the additional maintenance costs. So, the
cisco network devices are reducing the maintenance and operational cost.
10. VOIP Configuration using Routers
The network component installation and configuration is shown in below.
PC configuration
For PC 0,
For IP configuration,
Click the PC and select the IP configuration [1].
After, Enter the IP address as 10.0.0.10
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It is displayed in below.
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For PC 1,
For IP configuration,
Click the PC and select the IP configuration [1].
Type IP address as 20.0.0.10
Subnet Mask as 255.0.0.0
Default gate way as 20.0.0.1
It is displayed in below.
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Switch configuration
To configure the switch by creating the VLAN network for petrochemical company network
infrastructure.
For Switch 0,
To create VLAN by entering the following command in Command line interface.
Create the Vlan 2.
Enter the interface as fa1/1
Exit
Similarly do another interface. It is shown in below.
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For Switch 1,
To create VLAN by entering the following command in Command line interface.
Create the Vlan 3.
Enter the interface as fa1/1
Exit
Similarly do another interface. It is shown in below.
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Router configuration
To configure the router by typing the below command in command line interface.
In router 1,
No shut
It is shown in below.
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