In this section, we combine the user domain needs described in Part 1 of this proposal, the physical framework requirements described in Part 2, and the technology selections described in Part 3 to create the final Digital Edge Manufacturing network infrastructure proposal.
Choosing the Cabling Used in the Network
We considered infrastructure costs, speed, and reliability for cabling and adaptors. Our network employed hybrid type of network sine we use Ethernet cable, Wi-Fi and fiber optic as our media.
Ethernet Technology
The Ethernet technology was mostly used in the LAN because;
1. We used Ethernet speed of 10mbps for areas in the LAN that required higher bandwidth
2. Our campus network model supports dual links between each distribution layer routers and case switches. We are there able to load balance the aggregate traffic from multiple access switches across the links.
3. Giganet Ethernet will be used between switches but Fiber will be used between backbone switches.
In this network, we used straight- through cabling to link the following devices
1. Switch to router
2. Switch to PC or server
3. Hub to PC or server.
Cross-over technology was used to connect these devices
1. Switch to hub
2. Hub to hub
3. Router to router
4. Pc to pc.
Wi-Fi Technology
This was used to connect the electronic devices used in the network using the 2.4-gigahertz. Our Wi-Fi network is based on the IEEE 802.11 b/g standards, which is the most commonly used standard. We have added Wi-Fi access points in our network to give easier access to corporate data and services. Most of the devices in this network, for example the personal computers, smartphones, digital cameras, tablets and digital audio players connected using the Wi-Fi technology. The hotspot will be in the range of 20 meters (66 feet) indoors and a greater range outside. To improve security, the Wi-Fi uses various built-in WEP encryption technologies to prevent attacks from the hackers who may want to get access to the corporate data. We will continuously assess our Wi-Fi network in each and every site, analyze alternative security techniques, and suggest ways to secure our network. Fiber Optic Technology Fiber will be used majorly to connect to different departments/ buildings in each and every site. It will be used for backbone cabling since it can transmit over longer distances and at higher bandwidths than both the Wi-Fi and Ethernet cables. It greatly reduces the data loss, and immune to electromagnetic interference. The WAN fiber will be used to connect to regions/ sites where the satellite signals may be blocked by the mountains. This is usually done over leased WAN fiber lines as opposed to the LAN fiber lines that are always privately. Vendor Selection As team six searched for various vendors, we found that most vendors could install network equipment and set up basic networks, but we wanted a vendor who could not only focus on installing a network; but securing and fine tuning that network to provide the highest level of security, stability, and reliability. The services we wanted are listed below. 1. Network installation 2. Onsite support 3. Remote monitoring and management 4. Reengineering of existing and Wide Area Networks 5. Network troubleshooting and problem resolution 6. Router support 7. Business process reengineering 8. Project management 9. Support Agreements 10.