Iyini i-ERPS Ring?
I-ERPS (Ethernet Ring Protection Switching) iyiphrothokholi yokuvikela iringi eyakhiwe yi-ITU, eyaziwa nangokuthi i-G.8032. Kuyiphrothokholi yesendlalelo sesixhumanisi esetshenziswa ngokuqondile emasongweni e-Ethernet. Ingavimbela isivunguvungu sokusakaza esibangelwa iluphu yedatha lapho inethiwekhi yeringi ye-Ethernet isiqedile, futhi uma isixhumanisi senethiwekhi yeringitho ye-Ethernet sinqanyulwa, ingabuyisela ngokushesha ukuxhumana phakathi kwamanodi ahlukahlukene kunethiwekhi yokukhala.
Isebenza kanjani i-ERP?
Xhuma Isimo Sezempilo:
Indandatho ye-ERPS iqukethe ama-node amaningi. I-Ring Protection Link (RPL) isetshenziswa phakathi kwamanye ama-node ukuvikela inethiwekhi yokukhala futhi ivimbele amaluphu ukuthi angenzeki. Njengoba kuboniswe esithombeni esilandelayo, izixhumanisi phakathi kwedivayisi A nedivayisi B, naphakathi kweDivaysi E kanye neDivaysi F zingama-RPL.
Kunethiwekhi ye-ERP, indandatho ingasekela izimo eziningi, futhi isibonelo ngasinye siyindandatho enengqondo. Isenzakalo ngasinye sinesiteshi saso sephrothokholi, isiteshi sedatha, nendawo yomnikazi. Isenzakalo ngasinye sisebenza njengebhizinisi lephrothokholi ehlukile futhi sigcina isimo saso kanye nedatha.
Amaphakethe anama-ID okukhala ahlukene ahlukaniswa ngamakheli e-MAC endawo (ibhayithi yokugcina yendawo okuyiwa kuyo ikheli le-MAC limelela i-ID yeringi). Uma iphakethe line-ID yeringi efanayo, isenzakalo se-ERP eliyingxenye yaso singahlukaniswa nge-VLAN ID eyiphethe, okungukuthi, i-ID yeringi kanye ne-VLAN ID ephaketheni ikhomba isenzakalo ngokukhethekile.
Isimo Sokuhluleka Kwesixhumanisi:
Uma inodi ekusixhumanisi ithola ukuthi noma iyiphi imbobo yeringi ye-ERPS iphansi, ivimba imbobo engalungile futhi ngokushesha ithumele iphakethe le-SF ukwazisa ukuthi amanye amanodi kusixhumanisi ahlulekile.
Njengoba kuboniswe esithombeni esilandelayo, uma isixhumanisi phakathi Kwedivayisi C nedivayisi D sihluleka, Idivayisi C kanye Nedivayisi D zithola iphutha lesixhumanisi, vimba imbobo enephutha, futhi ngezikhathi ezithile uthumele imilayezo ye-SF.
Isimo Sokuphulukisa Sesixhumanisi:
Ngemva kokuba isixhumanisi esinephutha sesibuyiselwe, vimba imbobo ebisesimweni sephutha, qala isibali sikhathi, bese uthumela iphakethe le-NR ukwazisa umnikazi ukuthi isixhumanisi esinephutha sibuyisiwe. Uma inodi yomnikazi ingalitholi iphakethe le-SF ngaphambi kokuthi isibali sikhathi siphele, inodi yomnikazi ivimba imbobo ye-RPL futhi ngezikhathi ezithile ithumela amaphakethe (NR, RB) lapho isibali sikhathi siphelelwa yisikhathi. Ngemva kokuthola iphakethe le-(NR, RB), indawo yokutakula ikhulula imbobo evimbelwe okwesikhashana yokutakula iphutha. Ngemva kokuthola iphakethe (NR, RB), i-node yomakhelwane ivimba imbobo ye-RPL futhi isixhumanisi sibuyiselwa.
Njengoba kuboniswe esithombeni esilandelayo, lapho Idivayisi C kanye Nedivayisi D zithola ukuthi isixhumanisi phakathi kwazo sibuyisiwe, zivimba okwesikhashana imbobo ebikade isesimweni sokuhluleka futhi ithumele umlayezo we-NR. Ngemva kokuthola umlayezo we-NR, Idivayisi A (inodi yomnikazi) iqala isibali sikhathi se-WTR, esivimba imbobo ye-RPL futhi sithumele amaphakethe (NR, RB) emhlabeni wangaphandle. Ngemva kokuthi Idivayisi C kanye Nedivayisi D zithola umlayezo (NR, RB), zikhulula imbobo yokutakula evinjwe okwesikhashana; Idivayisi B (Umakhelwane) ivimba imbobo ye-RPL ngemva kokuthola (NR, RB) amaphakethe. Isixhumanisi sibuyiselwe esimweni saso sangaphambi kokwehluleka.
Izici zobuchwepheshe kanye nezinzuzo ze-ERPS
I-ERP Load Balancing:
Kunethiwekhi efanayo yendandatho, kungase kube khona ithrafikhi yedatha evela kuma-VLAN amaningi ngesikhathi esisodwa, futhi i-ERP ingakwazi ukusebenzisa ukulinganisa komthwalo, okungukuthi, ithrafikhi evela kuma-VLAN ahlukene idluliselwa ezindleleni ezihlukene. Inethiwekhi yendandatho ye-ERP ingahlukaniswa ibe yi-VLAN yokulawula kanye ne-VLAN yokuvikela.
Lawula i-VLAN: Le parameter isetshenziselwa ukudlulisa amaphakethe ephrothokholi e-ERP. Isenzakalo ngasinye se-ERP sine-VLAN yaso yokulawula.
I-Protection VLAN: Ngokungafani ne-VLAN yokulawula, i-VLAN yokuvikela isetshenziselwa ukudlulisa amaphakethe wedatha. Isenzakalo ngasinye se-ERP sine-VLAN yaso yokuvikela, esetshenziswa ngokumisa isibonelo sesihlahla esinwebekayo.
Ngokumisa izimo ze-ERP eziningi kunethiwekhi efanayo yeringi, izimo ze-ERP ezihlukene zithumela ithrafikhi esuka kuma-VLAN ahlukene, ukuze i-topology yethrafikhi yedatha kuma-VLAN ahlukene kunethiwekhi yeringi ihluke, ukuze kuzuzwe inhloso yokwabelana ngomthwalo.
Njengoba kuboniswe emfanekisweni, i-Instance 1 kanye ne-Instance 2 yizimo ezimbili ezilungiselelwe eringini ye-ERPS, i-RPL yezimo ezimbili ihlukile, isixhumanisi phakathi kwedivayisi A nedivayisi B yi-RPL ye-Instance 1, futhi Idivayisi A ingumnikazi. i-node ye-Instance 1. Isixhumanisi phakathi kwedivayisi C kanye nedivayisi D yi-RPL ye-Instance 2, futhi i-Decive C ingumnikazi we-Instance 2. Ama-RPL ezikhathi ezihlukene avimba ama-VLAN ahlukene ukuze asebenzise ukulinganisa komthwalo ngeringi eyodwa.
Izinga eliphezulu lokuphepha:
Kunezinhlobo ezimbili zama-VLAN ku-ERP, eyodwa i-R-APS VLAN kanti enye i-VLAN yedatha. I-R-APS VLAN isetshenziswa kuphela ukudlulisa amaphakethe ephrothokholi asuka ku-ERPS. I-ERP icubungula kuphela amaphakethe ephrothokholi asuka kuma-VLAN e-R-APS, futhi ayicubunguli noma yimaphi amaphakethe okuhlasela olandelwayo asuka kuma-VLAN wedatha, ithuthukisa ukuphepha kwe-ERP.
Isekela i-tangent ye-multi-loop intersection:
I-ERP isekela ukungeza izindandatho eziningi endaweni eyodwa (Node4) ngendlela ye-tangent noma impambana-mgwaqo, okwandisa kakhulu ukuguquguquka kwenethiwekhi.
Zonke izinguquko zezimboni zenethiwekhi yendandatho zisekela ubuchwepheshe benethiwekhi yenethiwekhi ye-ERPS ring, okuthuthukisa kakhulu ukuguquguquka kwenethiwekhi, futhi isikhathi sokuhlanganisa iphutha ngu-≤ 20ms, okuqinisekisa ukuzinza okuphezulu kokudluliswa kwedatha yevidiyo yangaphambili. Ukwengeza, isekela ukusetshenziswa kwe-single-core optical fiber ukwenza inethiwekhi yendandatho ye-ERPS ukuze kuqinisekiswe ukuthi akukho nkinga ekulayishweni kwedatha yevidiyo, futhi ngesikhathi esifanayo igcina izinsiza eziningi ze-fiber optical kumakhasimende.
Yenzani i-ERP?
Ubuchwepheshe be-ERP bufanele ama-topology e-Ethernet ring adinga ukwethembeka okuphezulu nokutholakala okuphezulu. Ngakho-ke, isetshenziswe kabanzi kwezezimali, ezokuthutha, ezishintshayo zezimboni neminye imikhakha. Emkhakheni wezezimali, izinhlelo zebhizinisi ezibalulekile zidinga ukuqinisekisa ukwethembeka okuphezulu kanye nokudluliswa kwedatha yesikhathi sangempela, ngakho ubuchwepheshe be-ERP busetshenziswa kabanzi. Embonini yezokuthutha, lapho ukwethembeka kwenethiwekhi nokuxhumana kubalulekile ekuphepheni komphakathi, ubuchwepheshe be-ERP bungasiza ekuthuthukiseni ukuzinza kwenethiwekhi ohlelweni lokushintshisana kwedatha ye-topology yenethiwekhi yendandatho. Ezinhlelweni ezishintshayo zezimboni, ubuchwepheshe be-ERP bungasiza inethiwekhi ukuthi ithembeke kakhulu, ngaleyo ndlela iqinisekise ukusebenza okuvamile komugqa wokukhiqiza. Ubuchwepheshe be-ERPS bungasiza amanethiwekhi ebhizinisi ukuthi afinyelele ekushintsheni okusheshayo kanye nokutholwa kwamaphutha, aqinisekise ukuqhubeka kwebhizinisi, futhi azuze ukutholwa kwesixhumanisi sezinga le-millisecond, ukuze kuqinisekiswe ngempumelelo ikhwalithi yokuxhumana komsebenzisi.
Isikhathi sokuthumela: Jul-13-2024