Da farko, muna bukatar mu fayyace ra'ayi: samun damar maɓallai masu sauyawa, maɓalli na tarawa, da maɓalli na core Layer ba su ne rarrabuwa da halayen maɓalli ba, amma an raba su ta hanyar ayyukan da suke yi. Ba su da ƙayyadaddun buƙatu, kuma galibi sun dogara ne da girman mahallin cibiyar sadarwa, ƙarfin isar da na'urar, da wurin da ke cikin tsarin cibiyar sadarwa. Misali, ana iya amfani da maɓalli na Layer 2 iri ɗaya a madaurin shiga ko ma'aunin tarawa a cikin tsarin cibiyar sadarwa daban-daban. Lokacin da aka yi amfani da shi a wurin samun damar, ana kiran maɓalli mai sauyawa, kuma lokacin da aka yi amfani da shi a wurin aggregation Layer, ana kiran maɓallin aggregation Layer switch.
Halaye da bambance-bambancen damar shiga Layer, Layer Layer da core Layer
Babban Layer na iya samar da mafi kyawun watsa tsaka-tsakin tsaka-tsaki, Layer na tarawa zai iya samar da haɗin kai na tushen manufofi, kuma madaidaicin hanyar shiga zai iya ba da damar mai amfani zuwa cibiyar sadarwar don aikace-aikacen sabis da yawa da sauran aikace-aikacen cibiyar sadarwa.
1. Access Layer
TUWANE ɓangarorin hanyar sadarwar da ke fuskantar kai tsaye mai amfani don haɗawa ko shiga hanyar sadarwar ana kiranta da access Layer, wanda yayi daidai da ma'aikatan grass-root a cikin gine-ginen kamfani, don haka layin shiga.canzayana da ƙananan farashi da halaye masu yawa na tashar tashar jiragen ruwa.
Layin shiga yana ba masu amfani damar samun damar tsarin aikace-aikacen akan sashin cibiyar sadarwar gida. Layin shiga yana ba da isassun bandwidth don samun dama tsakanin masu amfani da makwabta. Har ila yau, Layer samun damar yana da alhakin ayyukan sarrafa mai amfani (kamar tantance adireshin da tabbatar da mai amfani) da tattara bayanan mai amfani (kamar adiresoshin IP, adiresoshin MAC, da rajistan shiga).
2. Ƙirar tarawa
Aggregation Layer, wanda kuma aka sani da Layer rarraba, shine "matsakaici" tsakanin layin hanyar sadarwa da babban Layer. Yana daidai da tsakiyar gudanarwa na kamfanin kuma ana amfani dashi don haɗa babban Layer da kuma damar shiga. A cikin matsayi na tsakiya, ana yin Layer convergence kafin wurin aiki ya sami dama ga babban Layer don rage nauyin na'urori masu mahimmanci.
Ba shi da wahala a fahimci cewa Layer ɗin tarawa, wanda kuma aka sani da Layer na tarawa, yana da ayyuka daban-daban kamar aiwatar da manufofi, tsaro, samun damar ƙungiyar aiki, kewayawa tsakanin cibiyoyin sadarwa na yanki mai kama-da-wane (vlans), da kuma tace tushen ko kuma inda ake nufi. A cikin tarawa Layer, acanzawanda ke goyan bayan fasahar sauyawa Layer 3 kuma ya kamata a yi amfani da VLAN don cimma keɓewar cibiyar sadarwa da rarrabuwa.
3. Core Layer
Babban Layer shine kashin baya na hanyar sadarwa, wanda ke ba da tabbacin aikin gabaɗayan cibiyar sadarwa, kuma kayan aikinta sun haɗa dahanyoyin sadarwa, Firewalls, core Layer switches, da dai sauransu, wanda yayi daidai da babban gudanarwa a cikin gine-ginen kamfani.
An yi la'akari da core Layer a matsayin mai karɓa na ƙarshe da mai tara duk zirga-zirga, don haka ƙirar ƙirar ƙirar ƙirar da buƙatun kayan aikin cibiyar sadarwa suna da tsauri sosai, aikinsa ya fi dacewa don cimma ingantacciyar watsawa tsakanin cibiyar sadarwar kashin baya, aikin ƙirar ƙirar kashin baya shine yawanci mayar da hankali ga redundancy, aminci da kuma high-gudun watsa. Sabili da haka, ya zama dole ga na'urori masu mahimmanci don ɗaukar tsarin dual-system redundancy hot madadin, kuma ana iya amfani da aikin daidaita nauyi don inganta aikin cibiyar sadarwa. Ya kamata a aiwatar da aikin sarrafawa na cibiyar sadarwa a kan kashin baya kadan kamar yadda zai yiwu.
Bambanci tsakanin layin shigacanza, da aggregation Layercanzada kuma core Layercanzashine mahimmin batu na ilimin da ke sama. Thecanzada aka ambata a sama na cikin samfuran sadarwar da ake siyarwa a Shenzhen HDV Phoelectron Technology LTD., kamar: Ethernetcanza, Fiber Channelcanza, Ethernet Fiber Channelcanza, da dai sauransu, ana iya amfani da maɓallan da ke sama a cikin yanayi daban-daban, don samar da ƙarin zaɓuɓɓuka don masu amfani da buƙatu daban-daban, maraba da fahimta, za mu samar da mafi kyawun sabis na inganci.
