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8/3/2019 CCNA Dis4 - Chapter 3 Characterizing the Existing Network_ppt [Compatibility Mode]
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Chapter 3 Characterizing the ExistingNetwork
CCNA Discovery 4.0
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Introduction
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Introduction
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Introduction
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Introduction
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Introduction
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Documenting the Existing Network
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Creating a Network Diagram
The NetworkingCompany designer examines the existingnetwork to: Determine if the design goals are realistic and feasible
Determine if the existing network meets the expectations for scalability,availability, security, and manageability
Identify where new equipment, infrastructure upgrades, and new servicescan be integrated
Ensure that old and new network devices, media, and functions can worktogether
Upgrading the Stadium Network Better manage its existing voice, video, and data networks
Improve customer service
Reduce costs
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Creating a Network Diagram
The network documentation should include: Logical and physical diagrams of the network
Floor plans showing the location of wiring closets and wiring runs
Inventory lists of installed network equipment
Current network configuration files
Inventory lists of network applications
Producing a Network Topology Map
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Creating a Network Diagram
Obtaining Information About Devices and Data Routes show version
show running-config
show ip route
show cdp neighbors detail
show controllers show tech-support
show vlan
show vtp
show spanning-tree
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Creating a Network Diagram
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Activity 3.1.1.4
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Lab Activity 3.1.1.5
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Diagramming the Logical Architecture
Creating an Existing Network Overview Diagram:The first diagram that the network designer creates is a high-level view of all the
stadium network sites
The main stadium network
The souvenir shop
The ticket outlet locations Connectivity to remote sites
Connectivity to business partners
Creating Network Segment DiagramCreates diagram for the logical and physical layouts of the networks installed at
each of the various sites
The location of the network equipment and wiring closets
The logical addressing information
The naming information
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Diagramming the Logical Architecture
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Diagramming the Logical Architecture
Creating a Local Diagram of the Main Stadium Lan
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Lab Acitivity 3.1.2.3
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Developing a Modular Diagram
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Lab Activity 3.1.3.2
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Strengths and Weaknesses of the Existing Network
Strengths of the Existing Stadium Network The designer reviews the current voice and video network
documentation to determine the locations of equipmentand the various groups who use the services.
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Strengths and Weaknesses of the Existing Network
Strengths: New wiring and adequate wiring closets
Adequate space for a new data center
Servers and PCs are current models and will not need to be replaced
Some existing network switches and routers can be used in the new design
Weaknesses: Flat network design
No Distribution Layer
No true Core Layer
Servers poorly located
Multiple networks that can be difficult to maintain Inadequate IP addressing structure
No dedicated bandwidth for WAN connectivity
Poorly-implemented wireless
Limited security implementations
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Strengths and Weaknesses of the Existing Network
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Lab Activity 3.1.4.3
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Updating the Existing Cisco IOS
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Cisco CCO Features and Navigation
The Cisco.com web site offers tools and online resources The tools and resources include the following:
Documentation - Hardware and software configuration and verification, aswell as troubleshooting Cisco products and technologies
Tools - Troubleshooting, installation, assessment, and service requests
Downloads - Software, specific file releases, and technical supportapplications
Communities and Training - Information on the Networking ProfessionalsConnection, attending Technical Support Seminars, and other trainingopportunities
News - Current topics reported in the Cisco Technical Support Newsletter
Access to these resources depending upon the type ofuser ACC
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Registering 3.2.1.1
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Investigating the Installed Cisco IOS software
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Lab Activity 3.2.2.2
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Investigating the Installed Cisco IOS software
When the Cisco IOS software on a switch or router isupgraded, the device needs to be rebooted. This processtakes the device out of service for a short period of time.
Upgrade have to test
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Lab Activity 3.2.3.2
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Choosing an Appropriate Cisco IOS Image
Networking Company staff must check that each devicehas enough flash and RAM memory to support the newIOS files
Archive IOS
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Download and Install Cisco IOS software
Step1: Select a IOS Software Image Memory requirement
Interface and Module Support
Software Feature Support
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Download and Install Cisco IOS software
Step 2: Identify the Device File System to Copy the Image:The NetworkingCompany staff uses the show file systemscommand output to locate the Cisco IOS files or images.
Step 3: Verify that the TFTP Server Has IP Connectivity tothe Device
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Download and Install Cisco IOS software
Step 4: Back Up the Current Configurations to Prepare forthe Upgrade
Step 5: Copy the IOS Image to the Device: copy tftp flashcommand
Activity 3.2.4.3
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Lab Activity 3.2.4.4
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The Router Startup Process
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The Router Startup Process
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The Router Startup Process
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Lab Activity 3.2.5.2
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Upgrading Existing Hardware
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Investigating Installed Hardware Features
Activity 3.3.1.1
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Investigating Appropriate Hardware Options
Activity 3.3.2.1
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Activity 3.3.2.2
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Lab Activity 3.3.2.3
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Install a New Hardware Option
Step 1: Turn Off Power to the Router Step 2: Remove the Blank Faceplate from the Slot Step 3: Install the Option Module Step 4: Turn on Power to the Router and Check the New Configuration Activity 3.3.3.1
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Performing a Wireless Site Survey
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Visiting the Customer Site
The next step is to evaluate the wireless LAN deployment Before the wireless network design is finalized, the
NetworkingCompany staff performs a site survey todetermine the best use and placement of the wirelessnetworking components.
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Visiting the Customer Site
The NetworkingCompany guidelines for wireless sitesurvey
Preparation Schedule the site survey with the customer.
Dress appropriately for the task.
Wear or carry company credentials.
Bring the proper equipment (create a standard checklist to ensure thatall necessary materials are included).
Notify stadium personnel when the staff will arrive and how long thesite survey should take.
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Visiting the Customer Site
Site Survey Check in with the proper staff upon entry into the stadium.
Work quickly and professionally to instill a sense of confidence in thecustomer.
Answer questions politely and as completely as possible.
Write down any questions that must be answered by other staffmembers.
Inform the customer of the survey procedures.
Report back to the customer staff before leaving the premises to informthem of the successful completion of the survey.
Security
Safety Guidelines Follow the recommended safety guidelines to ensure proper operation
and safe use of the wireless devices.
Obtain customer approval before touching or attaching devices to anyexisting networking equipment.
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Visiting the Customer Site
Some site visit requirements may include:Access restrictions
Clothing
Safety equipment
Identification BadgesHours of operation
Security
Prohibited items
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Physical Network Considerations
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Physical Network Considerations
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Physical Network Considerations
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Physical Network Considerations
Areas of concern to the designer include: The many microwave ovens that are located in the concession areas and
the luxury boxes
Wireless telephones and headsets that are used by the reporters andnewsmen
Elevator shafts that are located near the outer areas of the restaurant and
the luxury suites
Thick concrete pillars and walls between the luxury suites
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Activity 3.4.2.2
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Wireless Site Survey and Planning
Performing a site survey consists of the following steps: Step 1: Define Customer Requirements Step 2: Identify Coverage Areas Step 3: Determine Preliminary AP Locations
Step 4: Measure Signal Strength
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Wireless Site Survey and Planning
The NetworkingCompany staff performs the following steps: Step 1: Measure the signal strength and speed of a link as they walk
away from the AP.
Step 2: Record the readings and measure the distances to the APwhen the quality or link speed changes.
Step 3: Mark the areas where signals are acceptable on a floor plan.
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Lab Activity 3.4.3.3
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Game 3.4.3.5
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Documenting Network Design Requirements
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Creating a Network Design Requirements Document
The NetworkingCompany staff has now completed thePrepare and Plan phases of the network upgrade lifecycle. The first two sections of the Design Requirements
document are the Overall Project Goal and the ProjectScope.
Overall Project Goal This section states the overall goals of the upgrade. It also specifies how
this upgrade will help the stadium management company become moresuccessful.
Project Scope This section outlines the physical areas, applications, and user groups
affected by the network upgrade. It may list components of the network thatare beyond the scope of the network upgrade, such as server orapplication updates.
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Creating a Network Design Requirements Document
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Creating a Network Design Requirements Document
Two other important sections of the Design Requirementsdocument are Network Requirements and Current State ofthe Network.
Network Requirements State of the Network
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Overall Project Goal
It is important to think about the primary purpose of thenetwork design projectActivity 3.5.2.1
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Lab Activity 3.5.2.2
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Project Scope
Activity 3.5.3.1
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Activity 3.5.3.2
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Lab Activity 3.5.3.3
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Business Goals and Technical Requirements
The Network Requirements section has the following foursubsections: Business Goals
Technical Requirements
Users
Applications Business Goals
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Business Goals and Technical Requirements
Technical Requirements:Scalability
Availability
Security
Manageability
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Business Goals and Technical Requirements
Users In this section of the Design Requirements document,
the different user groups and their access requirementsare listed.
ApplicationsThe network traffic characteristics and requirements of
various applications affect the design of the network
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Activity 3.5.4.4
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Lab Activity 3.5.4.5
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http://www.bkacad.com/http://www.bkacad.com/8/3/2019 CCNA Dis4 - Chapter 3 Characterizing the Existing Network_ppt [Compatibility Mode]
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Existing Network Characterization
The final section of the Design Requirements documentincludes the following information: All of the network diagrams that the NetworkingCompany creates to
illustrate the existing network
The names and IP addresses of servers and important networkingcomponents
The existing network strengths and weaknesses and how they impact thebusiness goals
Hc vin cng ngh thng tin Bach Khoa - Website: www.bkacad.com
http://www.bkacad.com/http://www.bkacad.com/8/3/2019 CCNA Dis4 - Chapter 3 Characterizing the Existing Network_ppt [Compatibility Mode]
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Existing Network Characterization
Hc vin cng ngh thng tin Bach Khoa - Website: www.bkacad.com
http://www.bkacad.com/http://www.bkacad.com/8/3/2019 CCNA Dis4 - Chapter 3 Characterizing the Existing Network_ppt [Compatibility Mode]
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Activity 3.5.5.2
Hc vin cng ngh thng tin Bach Khoa - Website: www.bkacad.com
http://www.bkacad.com/http://www.bkacad.com/8/3/2019 CCNA Dis4 - Chapter 3 Characterizing the Existing Network_ppt [Compatibility Mode]
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Lab Activity 3.5.5.3
Hc vin cng ngh thng tin Bach Khoa - Website: www.bkacad.com
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Summary
Hc vin cng ngh thng tin Bach Khoa - Website: www.bkacad.com
http://www.bkacad.com/http://www.bkacad.com/8/3/2019 CCNA Dis4 - Chapter 3 Characterizing the Existing Network_ppt [Compatibility Mode]
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Summary
Hc vin cng ngh thng tin Bach Khoa - Website: www.bkacad.com
S
http://www.bkacad.com/http://www.bkacad.com/8/3/2019 CCNA Dis4 - Chapter 3 Characterizing the Existing Network_ppt [Compatibility Mode]
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Summary
Hc vin cng ngh thng tin Bach Khoa - Website: www.bkacad.com
S
http://www.bkacad.com/http://www.bkacad.com/8/3/2019 CCNA Dis4 - Chapter 3 Characterizing the Existing Network_ppt [Compatibility Mode]
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Summary
Hc vin cng ngh thng tin Bach Khoa - Website: www.bkacad.com
http://www.bkacad.com/http://www.bkacad.com/8/3/2019 CCNA Dis4 - Chapter 3 Characterizing the Existing Network_ppt [Compatibility Mode]
84/84
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