PACE-IT: Network Cabling (part 1) - N10 006

Network cabling I.

Instructor, PACE-IT Program – Edmonds Community College

Areas of Expertise Industry Certifications

PC Hardware

Network Administration

IT Project Management

Network Design

User Training

IT Troubleshooting

Qualifications Summary

Education

M.B.A., IT Management, Western Governor’s University

B.S., IT Security, Western Governor’s University

Entrepreneur, executive leader, and proven manger with 10+ years of experience turning complex issues into efficient and effective solutions.

Strengths include developing and mentoring diverse workforces, improving processes, analyzing business needs and creating the solutions required— with a focus on technology.

Brian K. Ferrill, M.B.A.

Network cabling I.PACE-IT.

– Twisted pair network cabling.

– Twisted pair network connectors.

– Categories of twisted pair.

Twisted pair network cabling. Network cabling I.

Most people are familiar with twisted pair cables, as they are the standard in the modern LAN.

Twisted pair cables are composed of four pairs of wires contained within an insulating sheath. Each pair of wires is twisted together to reduce electromagnetic interference (EMI). The twist rates differ between the pairs of wires to reduce crosstalk between the pairs. The colors of the pairs are: white orange/orange, white blue/blue, white green/green, and white brown/brown.

Twisted pair network cabling.Network cabling I.


– Unshielded vs. shielded twisted pair (UTP vs. STP).

» STP has an additional shield that is either wrapped around each pair of wires or around all four pairs.

• STP reduces the opportunity for EMI or crosstalk, but is more expensive and a little harder to work with.

» UTP is deployed in the network much more often than STP.

– Plenum vs. non-plenum twisted pair.

» Most twisted pair is non-plenum grade.» Building codes often call for plenum grade cable to be

run in plenum spaces (areas designed to assist in the airflow of a building for HVAC purposes).

• Plenum cable is jacketed in either a fire-retardant cover or in a low-smoke PVC jacket.

• Plenum cable often has a polymer or nylon strand woven into it to help take the weight of hanging cables. This reduces the chance for the cable to stretch, which can cause the pair inside to break.

Twisted pair is usually either a straight-through cable or a crossover cable, but it can also be used to create a rollover (console) cable.

A straight-through cable is used to connect different types of devices together (computer to switch, or switch to router) while a crossover cable is used to connect similar devices together (PC to PC, or switch to switch). They use a different pinout to achieve the connection.

A rollover or console cable is often required to connect to the console port on a switch or router. It is quite common for one end of the rollover cable to use an RJ45 connector, while the other end utilizes an RS 232 (DB 9) connector.


Twisted pair network connectors.Network cabling I.


– RJ11.» Uses a six-position four-contact (6P4C) modular

connector.» Can carry data or voice; common usage is voice

communication (telephony).

– RJ45.» Uses an eight-position eight-contact (8P8C) modular

connector.» Can carry data or voice; common usage is data

networking (Ethernet).

– RJ48C.» Uses an eight-position eight-contact (8P8C) modular

connector.» Used as the terminating connector at the demarc for T1

lines.• It is often confused with an RJ45, but the active pins

are different.


– UTP coupler.» Used to connect UTP cables back to back and still

maintain adherence to industry standards.

– 66 block.» A punchdown block initially developed to terminate and

distribute telephone lines in an enterprise environment.• It was also used in slower speed networks, as it can

handle data traffic rated for Cat 3 cabling.

– 110 block.» A punchdown block developed to terminate and

distribute twisted pair network cabling. It is capable of handling the signaling requirements of the modern network.


– DB9 (RS-232).» A nine pin D-subminiature connector developed for

asynchronous serial communication between nodes.• It was a common type of connection between a

computer and an external analog modem.• It often makes up one end of the rollover cable.

– DB25 (EIA-232/RS-232 serial).» A 25 pin D-subminiature connector developed for

asynchronous serial communication between nodes.• It was a type of connection between a computer and

an external analog modem.

Categories of twisted pair.Network cabling I.

Categories of twisted pair.Network cabling I.

– Cat 3.» Rated for up to 10 Mbps speed, 10BaseT.

• Max distance of 100 meters.

– Cat 5.» Rated for up to 100 Mbps speed, 100BaseT.

– Cat 5e.» Rated for up to 1 Gbps, 1000BaseT.

– Cat 6.» Rated for up to 10 Gbps, 10 Gigabit Ethernet

(GbE).• Max distance of 55 meters when used for 10

GbE.

– Cat 6a.» Rated for up to 10 Gbps, 10 GbE.» Max distance of 100 meters when used for 10

GbE.

Twisted pair cabling is the modern LAN standard. It is composed of four pairs of color coded wires, where each pair of wires is twisted together to reduce interference. It may contain extra shielding to further reduce interference. In some cases, a plenum grade cable may be called for by building codes. The most common types are: straight through, crossover, and rollover cables.

Topic

Twisted pair cabling.

Summary

The RJ11 is a modular six position four contact (6P4C) connector commonly used for telephony. The RJ45 is a modular 8P8C connector that is used to carry network traffic. The RJ48C is a modular 8P8C connector that is commonly used to terminate a T1 line. Punchdown blocks are used to terminate and distribute network runs of twisted pair wires. The DB-9 and DB-25 may be used for serial communication between nodes.

Twisted pair network connectors.

CAT3 can achieve speeds of 10 Mbps, CAT5 can achieve speeds of 100 Mbps, CAT5e can achieve speeds of 1000 Mbps, CAT6 can achieve speeds of 10 Gbps (over a maximum of 55 m), and CAT6a can achieve speeds of 10 Gbps.

Categories of twisted pair.

What was covered.Network cabling I.

THANK YOU!

This workforce solution was 100 percent funded by a $3 million grant awarded by the U.S. Department of Labor's Employment and Training Administration. The solution was created by the grantee and does not necessarily reflect the official position of the U.S. Department of Labor. The Department of Labor makes no guarantees, warranties, or assurances of any kind, express or implied, with respect to such information, including any information on linked sites and including, but not limited to, accuracy of the information or its completeness, timeliness, usefulness, adequacy, continued availability or ownership. Funded by the Department of Labor, Employment and Training Administration, Grant #TC-23745-12-60-A-53.

PACE-IT is an equal opportunity employer/program and auxiliary aids and services are available upon request to individuals with disabilities. For those that are hearing impaired, a video phone is available at the Services for Students with Disabilities (SSD) office in Mountlake Terrace Hall 159. Check www.edcc.edu/ssd for office hours. Call 425.354.3113 on a video phone for more information about the PACE-IT program. For any additional special accommodations needed, call the SSD office at 425.640.1814. Edmonds Community College does not discriminate on the basis of race; color; religion; national origin; sex; disability; sexual orientation; age; citizenship, marital, or veteran status; or genetic information in its programs and activities.

PACE-IT: Network Cabling (part 1) - N10 006

Education

Transcript of PACE-IT: Network Cabling (part 1) - N10 006