PC Support & RepairChapter 15Advanced Networks
Objectives• After completing this chapter, you will meet these objectives:▫ Identify potential safety hazards and implement proper safety
procedures related to networks. ▫Design a network based on the customer's needs. ▫Determine the components for your customer's network. ▫ Implement the customer's network. ▫Upgrade the customer's network. ▫Describe installation, configuration, and management of a
simple mail server. ▫Describe preventive maintenance procedures for networks. ▫Troubleshoot the network.
Safety Hazards & Procedures• Installing cabling can be
dangerous!
•Proper clothing & shoes• Ladder safety•Tool safety•Cable safety
Fiber Optic Cable Safety• Require training to cut/splice/repair fiber cables
• Chemical safety▫ Solvents & glues used are dangerous
• Tool safety▫ Sharp, compression, cuts glass & plastic▫Watch for flying shards▫Hard to see; can cut you
• Light safety▫Can’t see light, can damage eyes▫Careful with magnifier (for inspecting)
Copper Cable Safety•Copper strands are sharp▫Can cut you▫Can fly into air & eye
•Tools are sharp
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Design a network based on needs•Determine a topology. •Determine protocols and network applications.
Determine the Topology•Site Survey▫Estimate # of users & future growth▫Location of computers▫Location of network equipment & servers▫Cable/wireless
•Get blueprint or draw it yourself▫Note space, power, security, air conditioning
•Can you name the topologies?
Determine Protocols•TCP/IP required for Internet•NetBEUI▫No connection to Internet▫Fast, but only good for small networks
• IPX/SPX▫Used for old Novell networks (use TCP/IP now)
•AppleTalk▫Old, uses TCP/IP now
TCP/IP Protocols
More TCP/IP Protocols
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Determine Components for Network•Select cable types. •Select an ISP connection type. •Select network cards. •Select the network device.
Select Cable Types•UTP• Cat5 & Cat5e ▫5e can handle higher speeds▫Up to 330ft
• Cat6 & Cat6A ▫Splits pairs in upper/lower▫6A-For faster speeds; up to 10Gbps
10GBase-T• Cables connect to central MDF•Use Plenum rated for in walls & dropped ceilings▫Retards fires
More Cable Types•Wireless▫Use where cables can’t be installed▫Older, historic buildings
•Cost▫Wiring is a one-time, expensive cost▫Little maintenance after installed
•Security▫Wired is more secure than wireless
Select an ISP Connection•Consider:▫Speed ▫Reliability ▫Availability
ISP Connections
Scenarios•Choose which type of ISP service you’d use.
Selecting a Network Card•Desktop- integrated or expansion slot• Laptop- integrated or PC Card•USB adapters
•Ethernet Card or Gigabit Ethernet Card▫Should match speed of switch port▫Which for a Linksys E3000?
Wireless Network Cards•802.11a•B•G•N
Select Your Network Device• Hub▫Slow ▫Basic sharing of data▫Data goes to all
• Switch▫Faster than hub▫Smart▫Data goes to the one
• Router▫One port connects to Internet▫Called a gateway device▫Also can be multi-function
Try This…
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Implement the Network• Install and test the customer's network. •Configure the customer's Internet and network
resources.
Perform the Install•Plan first!• Install cables in wall▫One feeds another pulls
•Terminate cables & test•Check net cards & configure for TCP/IP• Install switches/routers in secure location•Put patch cable from jack to PC•Test▫Ipconfig /all & ping
Configure the Internet Connection•Temporary Internet files▫Help pages display faster▫Delete every so often
•Default Browser•File Sharing▫Right-click on folder, Sharing▫Read, Change, Full Control
•Print Sharing▫Right-click, Sharing
Lab•3 computers connected by a hub, sharing a printer
and a folder.
•192.168.1.1, 1.2, 1.3•Printer connected locally to 1.2 computer•Folder “GCIT” in Documents on computer 1.1
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Upgrade the Network• Install and configure a wireless NIC. • Install and configure a wireless router. •Test a connection.
Install a Wireless NIC•Wireless PCI or USB▫Check version
• Install drivers•Set IP▫Static or DHCP
•Packet Tracer Lab 15.5.1
Install & Configure Wireless Router•Find a good location▫Central to all is best
•Connect to modem & a computer• Log in through browser▫What’s the IP usually?
•Select mode (mixed, B, G, N)•Static/DHCP•SSID & broadcast•Security•Firmware Update
Test the Wireless Connection•Connection status
(Enabled/Disabled)▫Double-click for status▫In Vista, Network and
Sharing Center > Manage Network Connections. Double-click the Wireless Network Connection to display the status.
Testing the Connection• Ipconfig▫/all, /release, /renew
•Ping▫Tests connectivity▫Ping 192.168.1.7 –n 789▫Ping 192.168.1.7 –t
•Nslookup▫Tests DNS▫Nslookup www.cisco.com▫Nslookup 64.190.7.89
Packet Tracer Lab
15.5.3
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Common Problems
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PC Support & RepairChapter 15Advanced Networks