Basic Campus Network Design - Network Cabling System

Basic Campus Network DesignNetwork Cabling System

Md. Abdul AwalNetwork Engineer, BdREN

[email protected] 6, 2014

Workshop on Basic Campus Network Design, UGC, Dhaka BdREN © 2014. All rights reserved 1

mailto:[email protected]

Objectives

● Getting a basic idea about network cabling

● Understanding Standard Cabling Process

● Getting familiar with Network Cabling BCP

● Discussing specific issues


Transmission Media

Transmission Media

Guided

Coaxial Cable Twisted Pair Optical Fiber

Unguided

Microwave,Radio etc.


Twisted Pair Cable


Twisted Pair Cable


UTP Cable Grades

Category MaximumRate

Cable Type

Application

Cat 1 1 Mbps UTP Analog Voice, ISDN

Cat 2 4 Mbps UTP Voice and Low speed Data Network

Cat 3 10 Mbps UTP, S/UTP Voice and Low speed Data Network

Cat 4 16 Mbps UTP, S/UTP Token Ring

Cat 5 100 Mbps UTP, S/UTP Fast Ethernet

Cat 5e 1 Gbps UTP, S/UTP Gigabit Ethernet

Cat 6 1Gbps/10 Gbps UTP, S/UTP Gigabit Ethernet

Cat 7 10 Gbps S/STP Telephone, Full Motion Video


Types


Other Elements

● RJ45 Connector

● Faceplate

● Patch panel

● Cable Manager

● Overhead Pathway

● Cable Tie

● Accessories

● Tools


Structured Cabling

● a method for creating an organized cabling system that can be easily understood by

● The installers

● The network administrators

● Any other technicians who deal with cables

● Golden Rules: Planning is the key

● Look for a complete connectivity solutions

● Plan for future growth

● Maintain freedom of choice in terms of vendors


Subsystems

● Entrance Facilities

● Equipment Rooms

● Backbone Cabling

● Horizontal Cabling

● Telecommunications Rooms

● Work-Area Components


Why Standard Cabling?


Why Standard Cabling?


Design Goals

● Functionality: speed and reliability

● Scalability: ability to grow without major changes

● Adaptability: easily implements new technologies

● Manageability: facilitates monitoring and ease of management


Every Structured Cabling is Different

● The architectural structure of the Site/Building

● The manufacturer and products

● The function of the cabling installation

● The types of equipment the cabling installation will support (present and future)

● The configuration of an already installed system (upgrades and retermination)

● Customer requirements


Terminology


BackboneCabling

ClosetOr Rack Horizontal

Cabling

Work Area

Considerations

● Cable pair twists

● When terminating cable, only strip back the cable sheath 1″. Keep pair untwists to a maximum of 0.5″

● If you lose the twists, you lose performance


Considerations

● Bend radius

● Bend radii is 4 times the cable diameter

● Too much bend loosen the twists, eventually lose performance


Considerations

● Tension

● Pulling tension should not exceed 110 N (25 lb./ft.)

● Pulling too hard untwists the pairs, which can cause transmission problems


Max pulling tension = 25 lb/ft.

25 lb/ft. or 110 N

Considerations

● Cinching

● Cinching cable bundles tightly causes stress and degrades performance

● Tie cable bundles loosely. And never staple cables


Horizontal Distance Limitation


Cat 5e UTP Cable

Horizontal Cabling

Telecommunication Closet

Workstation

Work Area

Network Rack

I1

I2 I3

I4I1 + I2 + I4 ≤ 10m

I3 ≤ 90m

I1, I2 = Equipment patch cordI3 = Horizontal CableI4 = Work area patch cord

Cable Arrangement


Common Framework for Rack


Considerations

● Miscellaneous

● Use connecting hardware of the same category or higher. So, if you’re using CAT6 cable, use CAT6 connectors

● Plan for 1-2 feet of slack cable behind wall outlets for possible future reterminations

● Route your network cables away from power lines, fluorescent lights, and industrial equipment


Patch Panel


Overhead Pathway


Overhead Pathway


Documentation and Tagging


Naming Scheme

● Building (SB)

● Room (SB-201)

● Rack (SB-201-R01)

● Patch Panel (SB-201-R01-PP03)

● Workstation Outlet (SB-201-R01-WS12)

● Port (SB-201-R01-PP03-15)

● Cable (each end labeled with the destination port)


Naming Scheme


SB-201-R01-WS12

Science Building

Room# 201

Rack# 01

Workstation# 1201 02Port# 01

Naming Scheme


Science Building

Room# 201

Rack# 01

Patch Panel# 03Port# 01

Naming Scheme


SB-201-R01-PP03-01 SB-2

01

-R0

1-W

S12

-01

Cable Tagging


Putting It All Together


Network

Core

Location

Network

Closet 1

Building 3

Network

Closet 2

Building 1

Network

Closet 3

Building 5

Building 4

Building 2

cat5e

fiber

cat5e

Cat5e

+ fiber

Cat5e

+ fiber

fiber

fiber

fiber

fiber



SERVIZI

VANO

SCALE

ACCOGLIENZA

SALA

CONSULTAZIONESALA

PRESTITI

SALA

WIRELESS

FIRST FLOOR

UFFICI

BIBLIOTECAVANO

SCALE

SALA

MACCHINE

SECOND FLOOR

MAGAZZINI DI CONSERVAZIONE

UFFICI O

AMMINISTRATIVOVANO

SCALE

UFFICIO

TECNICO

THIRD FLOOR

UFFICIO

PERSONALEUFFICIO

ACQUISTIDIRIGENTE



SERVIZI

VANO

SCALE

ACCOGLIENZA

SALA

CONSULTAZIONESALA

PRESTITI

SALA

WIRELESS

PIANO TERRA

TC01

MC

TC02TC03

EF

MC

UFFICI

BIBLIOTECAVANO

SCALE

SALA

MACCHINE

PRIMO PIANO

MAGAZZINI DI CONSERVAZIONE

UFFICI O

AMMINISTRATIVOVANO

SCALE

UFFICIO

TECNICO

SECONDO PIANO

UFFICIO

PERSONALEUFFICIO

ACQUISTIDIRIGENTE

MCTC11

TC12

TC21

TC01EF

TC21

MCMC Main cross Connect

EF Entrance Facility

TC01 Telecommunication Closet PT (Prestiti+Accoglienza)

TC02 Telecommunication Closet PT (Wireless)

TC03 Telecommunication Closet PT (Consultazione)

TC11 Telecommunication Closet PP (Biblioteca)

TC12 Telecommunication Closet PP (Magazzino)

TC21 Telecommunication Closet SP (all the Officies)

Backbone Pathway

Horizontal Pathway



MCEF

TC01

TC02 TC03 TC11 TC12 TC21

TOxxTOxxTOxxTOxx TOxxTOxx





FO link

router

SW P

SW CS

PP CS

MC

FO link

SW 01

PP 01

TC01

SW 02

PP 02

TC02

FO link

SW 21

PP 21

TC21

SW 03

PP 03

TC03

SW 11

PP 11

TC11

SW 12

PP 12

TC12

Third floor

Second floor

First floor

Tools: Crimper


Tools: Cable Tester


Tools: Stripper


Tools: Tie and Cutter


Tools: Labeler


Cable Installation BCP


Cable Installation BCP (Continues)










Wrapping UP

● Plan for stable physical layer: Optimizes cost

● Use Cat 5e (Or Cat 6) UTP cable

● Use Straight-Through Cable (TIA/EIA - T568B)

● Maintain HLD and LLD or other documentation and diagram

● Tag, Tag, Tag…

● Total horizontal distance is less than 100m

● Consider port concentration

● Plan for future expansion


Discussion


[email protected]

mailto:[email protected]

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Basic Campus Network Design - Network Cabling System