Pele ho tsohle, re hloka ho hlakisa mohopolo: li-switches tsa lera la phihlello, li-switches tsa lera la aggregation, le li-switches tsa mantlha ha se likarolo le litšoaneleho tsa li-switches, empa li arotsoe ke mesebetsi eo ba e etsang.Ha ba na litlhoko tse tsitsitseng, 'me haholo-holo ba itšetlehile ka boholo ba tikoloho ea marang-rang, bokhoni ba ho fetisa mochine, le sebaka sa mohaho oa marang-rang.Mohlala, sesebelisoa se tšoanang sa Layer 2 se ka sebelisoa sebakeng sa phihlello kapa lera la aggregation meahong e fapaneng ea marang-rang.Ha e sebelisoa lealong la phihlello, switch e bitsoa switch ea layer ea phihlello, 'me ha e sebelisoa sebakeng sa aggregation, switch e bitsoa switch aggregation layer.
Litšobotsi le liphapang tsa lera la phihlello, lera la aggregation le lera la mantlha
Sekhahla sa mantlha se ka fana ka phetisetso e nepahetseng ea li-interzone, sethala sa aggregation se ka fana ka khokahano e thehiloeng ho leano, 'me sekhahla sa phihlello se ka fana ka phihlello ea mosebelisi marang-rang bakeng sa lits'ebetso tsa lits'ebeletso tse ngata le lits'ebetso tse ling tsa marang-rang.
1. Lera la phihlello
Ha e le hantle, karolo ea marang-rang e shebaneng ka ho toba le mosebedisi ho hokahanya kapa ho fihlella marang-rang e bitsoa sebaka sa ho fihlella, se lekanang le basebeletsi ba mohono mohahong oa lik'hamphani, kahoo mochine oa ho fihlella o na le litšenyehelo tse tlaase le tse phahameng. litšobotsi tsa density.
Lera la phihlello le fa basebelisi bokhoni ba ho fihlella sistimi ea ts'ebeliso karolong ea marang-rang ea lehae.Sebaka sa phihlello se fana ka bandwidth e lekaneng bakeng sa phihlello lipakeng tsa basebelisi ba boahelani.Sebaka sa phihlello se boetse se ikarabella bakeng sa mesebetsi ea taolo ea basebelisi (joalo ka netefatso ea aterese le netefatso ea mosebelisi) le pokello ea tlhaiso-leseling ea mosebelisi (joalo ka liaterese tsa IP, liaterese tsa MAC, le lintlha tsa phihlello).
2. Aggregation lera
Aggregation layer, eo hape e tsejoang e le "distribution layer" ke "mokena-lipakeng" lipakeng tsa lera la phihlello ea marang-rang le karolo ea mantlha.E lekana le tsamaiso e bohareng ea k'hamphani mme e sebelisetsoa ho hokahanya lera la mantlha le lera la ho fihlella.Boemong bo bohareng, lera la convergence le etsoa pele setsi sa mosebetsi se fihlella lera la mantlha ho fokotsa mojaro oa lisebelisoa tsa mantlha.
Ha ho thata ho utloisisa hore karolo ea aggregation, eo hape e tsejoang e le aggregation layer, e na le mesebetsi e fapaneng e kang ho kenya ts'ebetsong melaoana, ts'ireletso, phihlello ea sehlopha sa mosebetsi, ho tsamaisa lipakeng tsa marang-rang a sebaka sa lehae (vlans), le ho sefa aterese ea mohloli kapa sebaka seo u eang ho sona.Karolong ea aggregation, sesebelisoa se tšehetsang theknoloji ea ho fetola Layer 3 le VLAN e lokela ho sebelisoa ho finyella ho arohana ha marang-rang le ho arola.
3. Lera la mantlha
Sekhahla sa mantlha ke mokokotlo oa marang-rang, o tiisang ts'ebetso ea marang-rang kaofela, 'me thepa ea eona e kenyelletsa li-routers, li-firewall, li-switches tsa core layer, joalo-joalo, tse lekanang le tsamaiso e phahameng ka ho fetisisa mohahong oa lik'hamphani.
The core layer e 'nile ea nkoa e le moamoheli oa ho qetela le aggregator ea sephethephethe sohle, kahoo moralo oa mantlha oa lera le litlhoko tsa lisebelisoa tsa marang-rang li thata haholo, mosebetsi oa eona ke ho fihlela phetisetso e nepahetseng lipakeng tsa marang-rang a mokokotlo, mosebetsi oa moralo oa mokokotlo oa mokokotlo hangata ho tsepamisa maikutlo ho fokotseng, ho ts'epahala le phetiso ea lebelo le holimo.Ka hona, hoa hlokahala hore lisebelisoa tsa mantlha tsa lera li amohele li-backups tse chesang tse peli, 'me mosebetsi oa ho leka-lekanya mojaro o ka boela oa sebelisoa ho ntlafatsa ts'ebetso ea marang-rang.Mosebetsi oa taolo oa marang-rang o lokela ho kenngoa mokokotlong oa mokokotlo ka hohle kamoo ho ka khonehang.
Phapang pakeng tsa ho fihlella lera switjha, aggregation lera switjha le konokono lera switjha ke ntlha ea bohlokoa ea tsebo e ka holimo.Phetoho e boletsoeng ka holimo ke ea lihlahisoa tsa puisano tse chesang tse rekisoang ka Shenzhen HDV Phoelectron Technology LTD., tse kang: Ethernet switjha, Fiber Channel switjha, Ethernet Fiber Channel switjha, joalo-joalo, li-switches tse ka holimo li ka sebelisoa libakeng tse fapaneng, ho fana ka likhetho tse ngata bakeng sa basebelisi ba nang le litlhoko tse fapaneng, re amohelehile ho utloisisa, re tla fana ka litšebeletso tse ntle ka ho fetisisa tsa boleng.
