FIT3031 Lecture Notes - Data-Rate Units, Baseband, Fibre Channel

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Letue  - LAN Oeie High Speed LANs
LAN Overview
Technologies
Gigait &  Gigait Etheet
Fie Chael
High Speed Wieless LANs
Applications requiring High Speed LANs
Centralised server farms : use eeds to da huge aouts of data fo ulple etalised
sees
Poe okgoups
Small number of cooperating users : da assie data files aoss etok
High-speed local backbone
Poessig dead gos
LANs polifeate at site
High-speed iteoeo is eessa
Hierarchical Network Design
LAN Architecture Evolution
Topologies
Bus ad Tee
Chaateised  the use of ulpoit
Tasissio popagates thoughout ediu
Head  all staos
Head -ed oeted to ahig ales
Rig
Closed loop of epeates joied  poit to poit liks
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Reeie data o oe lik ad etasit o aothe
Liks ae uidieoal
Staos aah to epeates
Data tasied as faes
Mediu aess otol deteies he a stao a iset fae
Sta
Eah stao oets to etal ode
Eithe etal ode ill oadast Hu
Tasissio fo a stao is see  all othes
Ol oe stao a tasit at a e
If to staos tasit at the sae e e hae a ollisio
Cetal ode a at as fae sith
Fae sithig
No-oadast tasissio is piate etee pees ol
Fae oadast hu
Fae etasied o all outgoig liks
Reeied  all
Fae sithig sith
Ioig fae is uffeed i the sith ad etasied ol o a
outgoig lik to the desao stao
Choie of topolog depeds o
Reliailit
Epadailit
Pefoae
Needs osideig i otet of
Mediu
Wiig laout
Aess otol
Transmission Medium
Bus LAN
Tisted pai
Eal LANs used oie gade ale
Did’t sale fo fast LANs
Not used i us LANs o
Basead oaial ale
Uses digital sigallig
Oigial Etheet
Boadad Coaial Cale
I ale TV sstes
Aalog sigals at adio feueies
Epesie, had to istall ad aitai
No loge used i LANs
Opal fie
Epesie taps
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Document Summary

Le(cid:272)tu(cid:396)e (cid:1005)(cid:1005) - lan o(cid:448)e(cid:396)(cid:448)ie(cid:449) high speed lans. Centralised server farms : use(cid:396) (cid:374)eeds to d(cid:396)a(cid:449) huge a(cid:373)ou(cid:374)ts of data f(cid:396)o(cid:373) (cid:373)ul(cid:415)ple (cid:272)e(cid:374)t(cid:396)alised se(cid:396)(cid:448)e(cid:396)s. Small number of cooperating users : d(cid:396)a(cid:449) (cid:373)assi(cid:448)e data les a(cid:272)(cid:396)oss (cid:374)et(cid:449)o(cid:396)k. Closed loop of (cid:396)epeate(cid:396)s joi(cid:374)ed (cid:271)(cid:455) poi(cid:374)t to poi(cid:374)t li(cid:374)ks. Re(cid:272)ei(cid:448)e data o(cid:374) o(cid:374)e li(cid:374)k a(cid:374)d (cid:396)et(cid:396)a(cid:374)s(cid:373)it o(cid:374) a(cid:374)othe(cid:396) Mediu(cid:373) a(cid:272)(cid:272)ess (cid:272)o(cid:374)t(cid:396)ol dete(cid:396)(cid:373)i(cid:374)es (cid:449)he(cid:374) a sta(cid:415)o(cid:374) (cid:272)a(cid:374) i(cid:374)se(cid:396)t f(cid:396)a(cid:373)e. T(cid:396)a(cid:374)s(cid:373)issio(cid:374) f(cid:396)o(cid:373) a sta(cid:415)o(cid:374) is see(cid:374) (cid:271)(cid:455) all othe(cid:396)s. O(cid:374)l(cid:455) o(cid:374)e sta(cid:415)o(cid:374) (cid:272)a(cid:374) t(cid:396)a(cid:374)s(cid:373)it at a (cid:415)(cid:373)e. If t(cid:449)o sta(cid:415)o(cid:374)s t(cid:396)a(cid:374)s(cid:373)it at the sa(cid:373)e (cid:415)(cid:373)e (cid:449)e ha(cid:448)e a (cid:272)ollisio(cid:374) Ce(cid:374)t(cid:396)al (cid:374)ode (cid:272)a(cid:374) a(cid:272)t as f(cid:396)a(cid:373)e s(cid:449)it(cid:272)h. I(cid:374)(cid:272)o(cid:373)i(cid:374)g f(cid:396)a(cid:373)e is (cid:271)u e(cid:396)ed i(cid:374) the s(cid:449)it(cid:272)h a(cid:374)d (cid:396)et(cid:396)a(cid:374)s(cid:373)i(cid:425)ed o(cid:374)l(cid:455) o(cid:374) a(cid:374) outgoi(cid:374)g li(cid:374)k to the des(cid:415)(cid:374)a(cid:415)o(cid:374) sta(cid:415)o(cid:374) Ve(cid:396)(cid:455) high speed li(cid:374)ks o(cid:448)e(cid:396) lo(cid:374)g dista(cid:374)(cid:272)es. Si(cid:374)gle li(cid:374)k o(cid:396) (cid:396)epeate(cid:396) failu(cid:396)e disa(cid:271)les (cid:374)et(cid:449)o(cid:396)k. Uses (cid:374)atu(cid:396)al la(cid:455)out of (cid:449)i(cid:396)i(cid:374)g i(cid:374) (cid:271)uildi(cid:374)g. High data (cid:396)ates fo(cid:396) s(cid:373)all (cid:374)u(cid:373)(cid:271)e(cid:396) of de(cid:448)i(cid:272)es. Used to (cid:272)o(cid:374)(cid:374)e(cid:272)t seg(cid:373)e(cid:374)ts of a lan.

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