PC Support & Repair Chapter 15 Advanced Networks.

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