U4 Assignment 1 IT2250 - U4A1 PDF

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UNIT 4 ASSIGNMENT 1 NETWORK INFRASTRUCTURE PLAN

UNIT 4 ASSIGNMENT 1 John Mekita IT2250 INTRODUCTION TO NETWORK TECHNOLOGY Alidad Jalinous Capella University December 8, 2019

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UNIT 4 ASSIGNMENT 1 NETWORK INFRASTRUCTURE PLAN

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Table of Contents Describe the WAN technology used and the bandwidth offered---------------------------------------3 Describe the location of the router and switches-------------------------------------------------------3-4 Describe the routing protocol used on your LAN and on the WAN---------------------------------4-5 Provide reasoning for choosing the switching and routing, WAN transmission-------------------4-5 Resources-------------------------------------------------------------------------------------------------------6

UNIT 4 ASSIGNMENT 1 NETWORK INFRASTRUCTURE PLAN

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Upon determining the type of WAN needed, many factors come into play such as, traffic load, budget and geographical locations. First, the Hospital will require a dedicated Internet access (DIA), a portion and/or cable that is dedicated to the customer only, verse broadband, which is shared amongst multiple customers. DIA is needed because download and upload times will need to be the same while broadband can only perform faster download times. Since the hospital will be sending and receiving a lot of data a dedicated Internet access is a must have. Second, while Metro (Metropolitan) Ethernet may be an ideal solution for a WAN, it is probably best to go with T-Carriers since you can go fiber-optic and then eventually go wireless. “Tcarrier technology, which includes T1s, fractional T1s, and T3s, provides a dedicated logical circuit that is used only by the customer”. Utilizing a T1, or fractional T1, will be a cost saving for the hospital since you are only using a small set of channels and/or paying for only the channels used. The SONET (Synchronous Optical Network) is by far the best way to go but it is a bit over the top for the hospital since there are only 115 employees and one branch location. Location of Routers and Switches Both locations will consist of a Demarc location, the device where the WAN ends and the LAN begins, and we can determine the position of routers and switches from this point. Depending on the number of floors and/or users, the hospital’s second location will require at least one (1) Edge (connection to outside world) router, located near the Deamrc, one (1) Core (Internal) router, and one (1) or more switches. It’s best to have an Edge and a Core Router as it provides another layer of security form the outside world. One (1) or more switches are needed because we don’t know at this time how many floors and/or users will be at this location. Additionally, you may need to add additional routers if the second location increases in size or personnel and create

UNIT 4 ASSIGNMENT 1 NETWORK INFRASTRUCTURE PLAN

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smaller LANs, or networks, also known as subnets. This will ensure network traffic runs smoothly from one device to another, no matter where they are located. Routing Protocol used on the LAN and WAN As the hospital’s network expands it’s important to identify a routing table, a database that provides information about host locations and the best way to reach them. “A router relies on its routing table to identify which network a host belongs to and which of the router's interfaces points toward the best next hop to reach that network” (West, Andrews, Dean, 2019, p. 198). For example, if there are printers on every floor, it’s not ideal for a device located on the first floor to send a file to a printer located on the 4th floor. The path is too long and causes unnecessary traffic. Routing protocols means, by which routers communicate on network status, are based off administrative distance, convergence time and overhead. Each routing protocol is assigned an administrative distance and the shorter the distance the higher the priority. Convergence time is the time it takes for the router to identify the better path. Overhead is the weight placed on the underlying network to support the protocol. There are quite a few common routing protocols such as, Routing Information Protocol (RIP), Open Shortest Path First (OSPF), IS-IS (Intermediate System to Intermediate System), EIGRP (Enhanced Interior Gateway Routing Protocol), and BGP (Border Gateway Protocol). Each protocol has a classification of Interior Gateway Protocols (IGP), used by Core and Internal routers, or Exterior Gateway Protocols (EGP), used by Edge and Exterior routers. OSPF was introduced as an improvement to RIP and is one of the better protocols as it supports large networks, calculates more efficient paths, and maintains a database of the other router links so

UNIT 4 ASSIGNMENT 1 NETWORK INFRASTRUCTURE PLAN this would be best for the hospital. However, EIGRP protocol is the best of all protocols as it supports multiple protocols and limits unnecessary network traffic. Reason for choosing the switching and routing, WAN transmission, and topology There are good reasons to follow the topology provided within as the hospital seems it will grow now that they have included a secondary location. While cost may go up due to a T1 WAN, additional routers and switches, and EIFGRP protocols it provides the best network traffic. Ensuring there are no glitches in the network traffic also provides better service to its patients, which in return makes the hospital a better choice to its customers.

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UNIT 4 ASSIGNMENT 1 NETWORK INFRASTRUCTURE PLAN Resources; West, J. (2016). Network+ Guide to Networks, 7th Edition. IP Addressing and Subnetting for New Users Found here; https://www.cisco.com/c/en/us/support/docs/ip/routing-information-protocolrip/13788-3.html “Metro Ethernet” Found here; https://en.wikipedia.org/wiki/Metro_Ethernet “What Routing Protocol Should Your Office Use?” Found here; https://www.talari.com/blog/what-routing-protocol-should-your-office-use/

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