Network Upgrade Proposal
Network speeds are affected by several factors, including congestion due to the inability of old networks to scale correctly on a hub, old cabling with relatively low throughput, and competition for network resources such as printers, which causes collisions that slow down the rest of the network. On-premise servers can also contribute to a slow network if they are old and use outdated CPU architecture. Still, these often are designed to last a long period and manage large workloads, so they will not be considered for this proposal. However, migrating the company’s services to a hybrid cloud is worth migrating to improve network speeds and reliability. Therefore, we are considering upgrading the core network cabling, routers, and switches for this proposal.
Cabling
Assuming that the network is a LAN, most out-of-date networks rely on coaxial or shielded twisted pair cables for the network’s backbone or for connecting the nodes on the web to the current hub or switch. This proposal suggests using a single index multimode fiber optic cable from the terminating station of the internet service provider to the central control for a high bandwidth capacity and increased throughput on the entire network (Idiake, 2018). The main button should be close to the terminating station to address potential attenuation on the multimode fiber.
The LAN can use unshielded twisted pair cables from the switch for short-distance connections approximately 30 meters from the main switch, with signal repeaters installed at the 30-meter threshold. If the LAN expects to traverse a longer distance, another multimode fiber with signal repeaters, as necessary, can be established to transmit up to 10Gbps of traffic on the network. It is worth noting that the initial cost of fiber optic is relatively high; the speed gains more than offset the price in the long term.
Redundancy
As mentioned earlier, the company should consider migrating to a hybrid cloud solution for their services, with only the critical services being hosted on-premise so they can be accessed quickly. This on-premise solution must have an idle backup server located in a different physical room than the central operational server and be continuously refreshed with the latest server state from the central server to be used during a catastrophic failure or as a restore point for the network. All cloud services are expected to be automatically backed up, with a public cloud used to increase the availability of the web on the cheap; in contrast, a private cloud hosts critical services securely and reliably (Aryotejo, 2018).
Routing and Switching
The network will use standard IPv4/IPv6. It will have management, operational, maintenance, administrative, and guest subnets. The active and guest subnets are to be used for wireless routers to create Wi-Fi networks for mobile devices and laptops, where the guest subnet is isolated from the rest of the networks to mitigate security risks. The administrative subnet is to be used for super-user access by the network administrator to monitor network traffic, and the rest of the subnets will be on physical LAN networks for office and maintenance use. The guest Wi-Fi will use four TP-Link Archer AX10 routers on the 2.4 GHz band to cover a reasonably large area where guests can sit and browse the internet. The operational network will use NETGEAR CAX80 routers on the 5GHz bar, with as many as needed in offices to provide high-speed wireless connectivity.
To mitigate potential network collisions further, the subnets are segmented using Cisco 24 port unmanaged Gigabit switches. These limit the broadcast and collision domains, protecting the network from threats and providing fast, reliable connectivity. The network will further be segmented using virtual LANs to reduce broad flat broadcast domains on the OSI level 2 layer, with the potential for trunking to improve network speeds and make the network more manageable (Kabir, 2020). VLANs allow company members in different locations but of the same department to break free of the same physical LAN connection and still reach their broadcast domain securely.
This proposal deliberately avoids a wired network for the operations subnet to mitigate security risks from unsecured Ethernet ports, as the wireless routers are to be fitted with a firewall to protect the network from potential threats such as physical tampering using USB devices to inject malicious programs into the network. All these biological and software-enabled factors work together to provide a secure, reliable, and fast network upgrade to the existing infrastructure.
References
Aryotejo G., Kristiyanto D. Y., and Mufadhol (2018), Hybrid cloud: bridging of private and public cloud computing, Journal of Physics: Conference Series, Volume 1025, The 7th International Seminar on New Paradigm and Innovation on Natural Science and Its Application
Idiake U., Victor M., Ochonogor, C. (2018), Experimental Analysis of Cable Distance Effect on Signal Attenuation in Single and Multimode Fiber Optics, International Journal of Electrical and Computer Engineering (IJECE) 8(3):1577.
Kabir, H. (2020), Design a VLAN (Virtual Local Area Network) Based Network, Report number: CCNA VLAN Report 01Affiliation: International Islamic University Chittagong.
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Question 
Network Upgrade Proposal
Part 2: VLAN Routing
Section1: Proposal
The network is too slow, and you have been tasked with creating a solution to fix this issue. A network upgrade will replace older and slower equipment with newer, faster, and redundant equipment, including routers, switches, and cabling.
Write a 2–4 page APA formatted proposal on upgrading routers and switches on your network. Include specifics, including model types, cabling, and updated IOS. Also, include how many subnets will be needed and any configuration changes concerning hostnames, interface descriptions, and access control lists.
Make sure to adhere to the following in the proposal:
Establish and sustain a viewpoint and purpose for the bid.
Ensure that the proposal follows the conventions of standard English, including correct grammar, punctuation, and spelling.
The writing should be well-ordered, logical, unified, original, and insightful.