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[AIPWALON] Fahimtar larura na VLANS

Menene wayoyi 8 a cikin kebul na Ethernet yi

VLAN (cibiyar sadarwar yanki na al'ada) fasaha ce ta sadarwa wacce ma'ana tana da cikakkiyar hanyar ta hanyar yankin watsa shirye-shirye. Kowane van vlan yanki ne yankin yanki ne mai watsa shirye-shirye a cikin runduna zai iya sadarwa kai tsaye, yayin da yake sadarwa tsakanin vlans daban-daban an ƙuntata. A sakamakon haka, saƙonnin watsa shirye-shirye suna iyakance ga guda ɗaya.

Wadatacce

Ba a bukatar vlans
·VLAN vs. Subnet
·VLAN tag da Van ID
·Iri na vla music da van alama alamar ayyukan hannu
·Abubuwan da yanayin amfani da VLANS
·Batutuwa tare da vlans a cikin wuraren girgije

Me yasa ake buƙatar vlans

Hanyoyin sadarwar Ebernet sun kasance fasahar sadarwa naúrar dangane da CSMA / CD (mai ɗaukar hankali) wanda ya yi amfani da masu haɗin kai tsaye. Lokacin da adadin rukunin ya karu, ya haifar da mummunar hadari, watsa shirye-shiryen watsa shirye-shirye, lalata aikin ci gaba, har ma da bayanan cibiyar sadarwa. Kodayake yana haɗu da layuka ta amfani da na'urorin haɗari 2, har yanzu yana magance wadatar saƙonnin watsa shirye-shirye da inganta ingancin cibiyar sadarwa. Wannan ya haifar da ci gaban fasahar VLAN, wanda ya sa wani lan cikin ma'ana vlans; Kowace van yana wakiltar yankin watsa shirye-shirye, ana amfani da sadarwa a cikin otan kamar dai yana da sadarwa yayin da ake hana saƙonnin watsa shirye-shirye a cikin van.

1 1 (为什么需要 vlan) -1

Higumi 1: Matsayin Vlans

Saboda haka, vlans suna da waɗannan fa'idodi:

Korar da yankin watsa shirye-shirye: ana tsare da watsa shirye-shirye a cikin VAN, Bandwidth Bandwidth da haɓaka karfin sarrafa cibiyar sadarwa.
Inganta Tsaro: Saƙonni daga Vlans daban-daban suna samarwa a lokacin watsa, ma'ana masu amfani a cikin VLAN ba za su iya sadarwa da masu amfani a cikin wani van ba.
An ƙuntata maƙasudin hanyar sadarwa: an ƙuntata kurakurai zuwa VANA, don haka maganganu a cikin VAN ɗaya ba sa shafar aiki na yau da kullun na sauran vlans.
Cikakken aiki mai saurin aiki: VLANS na iya yin amfani da masu amfani cikin aiki daban-daban, ba da izinin mambobi na aiki iri ɗaya, yin aikin cibiyar sadarwa da kuma more rayuwa mai sauki.

VLAN vs. Subnet

Da gaba da kewayen cibiyar sadarwar IP a cikin mahaɗan hanyoyin, ƙarancin amfani da adiresoshin IP biyu-biyu za'a iya magance shi. Haka kuma vlans, abokantaka tana iya ware hanyar sadarwa tsakanin abokan ciniki. Mai watsa shiri-daban na vlans daban-daban ba zai iya sadarwa kai tsaye, kamar yanar gizo a cikin mahaɗan abubuwa ba zai iya ba. Koyaya, babu maifa kai tsaye tsakanin su biyun.

Vlan Subtet
Bambanci Amfani da shi don raba cibiyoyin sadarwa 2.
  Bayan saita haɗin van, masu amfani da ke cikin vlau na iya danganta kawai idan an kafa hanyoyin.
  Har zuwa 4094 vlans za a iya bayyana; Yawan na'urori a cikin Van ba shi da iyaka.
Aminiya A tsakanin guda ɗaya, ana iya bayyana abubuwa ɗaya ko fiye.

VLAN tag da Van ID

Don kunna Switches don rarrabe saƙonni daga vlans daban-daban, filin gano bayanan VLAN dole ne a ƙara saƙonnin. The Iee 802.1q ya ba da alama 4-byte VLAN alama (da aka sani da VANNG Tag) a ƙara zuwa Frames na Ethernet don gano bayanin VLAN.

配图 2 (VLAN tag 和 Vlan id) -2

Filin VID a cikin firam ɗin data yana gano Vlan wanda bayanan bayanan ke bayanai ne; Za'a iya yada firam ɗin data kawai a cikin vlan da aka tsara. Filin VID yana wakiltar ID na VLAN, wanda zai iya kasancewa daga 0 zuwa 4095. Tunanin ID na VLAN kawai suna iya aika Frames da Servernet a ciki ba tare da samun Frames na gargajiya ba tare da karɓar Lambobin Ethernet ba tare da karɓar lambobin gargajiya ba.

3 3 (VLAN 间用户 的二层隔离3

Sabili da haka, don yin hulɗa tare da waɗannan na'urori da, musayar musanyawa dole ne ku san Frames na gargajiya na gargajiya kuma ƙara ko tsiri VLAN alamun yayin watsa. A van tag ya kara da cewa ya dace da tsohuwar VLAN (tsohuwar tashar jiragen ruwa na ID, PVID).

4-4
配图 5 通过 Volif 实现 VLAN 间用户 的 三层互访 -5
微信图片20240614024031.jpg1

Iri na vla music da van alama alamar ayyukan hannu

A cikin cibiyoyin sadarwa na yanzu, masu amfani suna da irin wannan Van na Van, kuma za a iya samun wuraren da ake amfani da su da yawa a fannoni. Idan mai amfani da mai amfani ya zama dole, musayar tsakanin switches dole ne su iya gane da aika firam na bayanai daga yawancin vlans lokaci guda. Ya danganta da abubuwan da aka haɗa da kuma yadda ake sarrafa firam ɗin, akwai nau'ikan musayar VLAN don saukar da haɗi daban-daban da hanyar sadarwa.

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