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Is this your desk?

Then you are in the wrong session


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AgendaWiring & Infrastructure

Cat5e and standards for wiring

Patch panels and face plates

Tools and Terminations 568A vs568B & crossovers

Hubs and Switches Segmentation and the difference

10BaseT, 100BaseT, and Gigabit

4 repeater rule

Connection and uplinks

Wireless

Routers and Bridges General function and uses

Collision vs Broadcast domains

VLANS

Network AppliancesServers

oProxy/CacheoMail and Web

oFilters

oVirus Protection

- Operating Systems

oWindows 2000, NToApple

SoftwareManagement

Sniffing

Network Utilitiestraceroute, etc.

Design ConsiderationsA typical school

Issues


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Web Resources by Author

Feed Your Need for Speedhttp://www.cccoe.k12.ca.us/speed

Networkshttp://www.cccoe.k12.ca.us/networks
http://www.cccoe.k12.ca.us/networkshttp://www.cccoe.k12.ca.us/speedhttp://www.cccoe.k12.ca.us/networkshttp://www.cccoe.k12.ca.us/networkshttp://www.cccoe.k12.ca.us/speed


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Basic LAN Configuration


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Cat5 Patch Chords

RJ45 connectors

8 wires (4 pairs)

Twisted forinterference


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Cut, Strip & Crimp Tools

Make your ownpatch cords

Cuts and strips pairs RJ45 end crimped

onto ends of wire


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Faceplates

Mounts on or in wallor in raceway

Receives patchcords


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Fiber Optics

Handles speeds inthe Gigabits

Tough to self-terminate


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Fiber Patch Cords

$30

Ends are either SC

or ST Connects switches

& fast backbones


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Patch Panel

Terminationpunchdown in back

Patch cord plugin infront


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Punch Down Tool

Terminates wires toback of patch panels


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Raceway

Mounts to walls

Cleans up wiring

Can hold face plates


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WiringInfrastructure

Mounted andpermanent

Allows patching

Comfort thatinfrastructure is OK


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Wire Testing Equipment

Test wire for correcttermination of 8

wires Test for speed

capabilities

i.e. WaveTek Brand


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Cat5 Twisted Pair

UTP UnshieldedTwisted Pair

Category ratingbased on number of

twists per inch 4 pairs 8 wires


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Color Codes

Crossover1 3

2 6


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Making Cables


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Cabling Rules

1. Try to avoid running cables parallel to power cables.2. Do not bend cables to less than four times the diameter of the cable.3. If you bundle a group of cables together with cable ties (zip ties), do

not over-cinch them. You should be able to turn the tie with fingers.4. Keep cables away from devices which can introduce noise into

them. Here's a short list: copy machines, electric heaters, speakers,printers, TV sets, fluorescent lights, copiers, welding machines,microwave ovens, telephones, fans, elevators, motors, electric ovens,dryers, washing machines, and shop equipment.

5. Avoid stretching UTP cables (tention when pulling cables should not

exceed 25 LBS).6. Do not run UTP cable outside of a building. It presents a very

dangerous lightning hazard!7. Do not use a stapler to secure UTP cables. Use telephone wire/RJ6

coaxial wire hangers which are available at most hardware stores.


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Software


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Standard Network

IDF Switch

Patch Panel

Wireless Access

Point

Faceplates

Patch Cords

Workstations

MDF Switch

Router

Fiber uplink

CSU/DSU

Internet Service

Provider

Telco Provider


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Shared Media Hub

Workstations and/or Network Devices

All devices see

traffic from

other devices

Server or

Hub/Switch

All devices share

10Mbs access 10 BaseT

No segmentation = Flat


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Four Repeater Rule

Hubs

Main

Distribution

Frame

IDF

Closet

Classroom


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Switching

Same function as a hub

Divides network into segments

Each port gets dedicated bandwidth

10Mbs & 100Mbs

Learns addresses RTMP & Spanning Tree Reduces collisions and allows parallel traffic


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Switched Hub

Workstations and/or Network Devices

Dedicated 10MbsServer or

Hub/Switch

All devices share

100Mbs access 10 BaseT & one 100 BaseT

Segments only see traffic

addressed for their devices


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Solution to Repeater Rule

Hubs

IDF

Closet

Classroom

Main

Distribution

Frame

Switch


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Routers

Multilingual border guard

Reads packet addressing and directs data

Discards frame, repackages &retransmits data

May not pass all packets Hide devices

Chooses most efficient route


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Bridges

Mono-lingual border guard

Manages traffic between two networks byreading packet destination address

Address tables

Passes along broadcasts

Cant hide devices

Link fast local network to slower long-distance network


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SNMP

Simple Network Management Protocol

Agents gather data from the network inMIBS

Management Information Bases

Every port and packet monitored and

measured Control from one location

In Band or Out of Band management


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Collision and Broadcast Domains

Hub

Devices

Collision Domains

Switch or

Bridge

Broadcast Domain

Router


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Network Appliances

Types of Servers

Proxy/Cache

Firewall Mail and Web

Filter

virus Protection


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Proxy Server

Acts as an intermediary between aworkstation user and the Internet so that

the site can ensure security,administrative control, and cachingservice. A proxy server is associated

with or part of a gateway server thatseparates the enterprise network fromthe outside network.


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Cache Server

A cache server is a server relatively close toInternet users that saves (caches) Web

pages and possibly FTP and other files thatusers have requested. Successive requestsfor these pages or files can be satisfied by thecache server rather than requiring the use of

the Internet. A cache server not only servesits users by getting information more quicklybut also reduces Internet traffic.


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Firewall

A firewall, working closely with a routerprogram, examines each network

packet to determine whether to forwardit toward its destination.

A firewall is often installed in a speciallydesignated computer separate from the

rest of the network so that no incomingrequest can get directly at privatenetwork resources.


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Mail and Web Server

A Web server is a program that, using theclient/server model and the World Wide

Web's Hypertext Transfer Protocol(HTTP), serves the files that form Webpages to Web users. Every computer on

the Internet that contains a Web sitemust have a Web server program.


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Filters


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Virus


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Software

Sam Spadenetwork query toolhttp://www.samspade.org/ssw/

NeoTrace Express

You can trace any computer on the internet simply byentering an email, IP address or URLhttp://www.neoworx.com/products/ntx/

OTTool 1.0 from Neon Software Inc.makes DNS queries, pings devices, traceroutes and

scans ranges of IP addressesftp://ftp2.neon.com/pub/goodies/OTTool11.sit.hqx

WhatRoute 1.5.0b5(PPC)http://crash.ihug.co.nz/~bryanc/
http://www.thesnorkel.org/cgi-bin/axs/ax.pl?http://www.samspade.org/ssw/http://www.thesnorkel.org/cgi-bin/axs/ax.pl?http://www.neoworx.com/products/ntx/http://www.thesnorkel.org/cgi-bin/axs/ax.pl?ftp://ftp2.neon.com/pub/goodies/OTTool11.sit.hqxhttp://crash.ihug.co.nz/~bryanc/http://crash.ihug.co.nz/~bryanc/http://www.thesnorkel.org/cgi-bin/axs/ax.pl?ftp://ftp2.neon.com/pub/goodies/OTTool11.sit.hqxhttp://www.thesnorkel.org/cgi-bin/axs/ax.pl?http://www.neoworx.com/products/ntx/http://www.thesnorkel.org/cgi-bin/axs/ax.pl?http://www.samspade.org/ssw/


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Resources About.coms Computer Networking

http://compnetworking.about.com/

Networks for Beginnershttp://www.rad.com/networks/1997/nettut/mainmenu.html

Network Monitoring and Alerting Software

Intermapperhttp://www.dartware.com/

A Guide to Networking for K-12 Schoolshttp://www.netc.org/network_guide/

An Educators Guide to School Networkshttp://fcit.coedu.usf.edu/network/

Hardware and Software How-to Articleshttp://www.duxcw.com/digest/Howto/index.html
http://compnetworking.about.com/http://www.rad.com/networks/1997/nettut/mainmenu.htmlhttp://www.rad.com/networks/1997/nettut/mainmenu.htmlhttp://www.dartware.com/http://www.netc.org/network_guide/http://fcit.coedu.usf.edu/network/http://www.duxcw.com/digest/Howto/index.htmlhttp://www.duxcw.com/digest/Howto/index.htmlhttp://www.duxcw.com/digest/Howto/index.htmlhttp://www.duxcw.com/digest/Howto/index.htmlhttp://fcit.coedu.usf.edu/network/http://www.netc.org/network_guide/http://www.dartware.com/http://www.rad.com/networks/1997/nettut/mainmenu.htmlhttp://www.rad.com/networks/1997/nettut/mainmenu.htmlhttp://compnetworking.about.com/

Documents

Intro Computer network