{"id":87676,"date":"2020-07-09T13:42:19","date_gmt":"2020-07-09T11:42:19","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/huawei-dcn-pyat-sczenariev-postroeniya-seti-czod"},"modified":"2020-07-09T13:42:19","modified_gmt":"2020-07-09T11:42:19","slug":"huawei-dcn-pyat-sczenariev-postroeniya-seti-czod","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/huawei-dcn-pyat-sczenariev-postroeniya-seti-czod","title":{"rendered":"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dnes sa zameriavame nielen na produktov\u00fa l\u00edniu Huawei pre budovanie siet\u00ed datacentier, ale aj na to, ako na jej z\u00e1klade vytv\u00e1ra\u0165 pokro\u010dil\u00e9 komplexn\u00e9 rie\u0161enia. Za\u010dneme scen\u00e1rmi, prejdeme k konkr\u00e9tnym funkci\u00e1m, podporovan\u00e9mu hardv\u00e9ru a skon\u010d\u00edme preh\u013eadom konkr\u00e9tnych zariaden\u00ed, ktor\u00e9 m\u00f4\u017eu sl\u00fa\u017ei\u0165 ako z\u00e1klad modern\u00fdch datacentier s vysokou \u00farov\u0148ou automatiz\u00e1cie sie\u0165ov\u00fdch procesov.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/11ab3286977e3237fd53232150fe2d29.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nAk\u00e9ko\u013evek technick\u00e9 parametre sie\u0165ov\u00e9ho hardv\u00e9ru s\u00fa p\u00f4sobiv\u00e9, mo\u017enosti aplika\u010dn\u00fdch architektonick\u00fdch rie\u0161en\u00ed zalo\u017een\u00fdch na \u0148om s\u00fa ur\u010dovan\u00e9 t\u00fdm, ako efekt\u00edvne m\u00f4\u017ee by\u0165 vz\u00e1jomn\u00e1 integr\u00e1cia prepojen\u00fdch hardv\u00e9rov\u00fdch, softv\u00e9rov\u00fdch, virtu\u00e1lnych a in\u00fdch technol\u00f3gi\u00ed. Sna\u017e\u00edme sa dr\u017ea\u0165 krok s dobou a r\u00fdchlo pon\u00faka\u0165 na\u0161im z\u00e1kazn\u00edkom modern\u00e9 a s\u013eubn\u00e9 mo\u017enosti, ktor\u00e9 \u010dasto pred\u010dia najodv\u00e1\u017enej\u0161ie pl\u00e1ny in\u00fdch predajcov.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/69f20c780f905cb3b91d7ab1b7944300.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nRie\u0161enia zalo\u017een\u00e9 na Cloud Fabric zah\u0155\u0148aj\u00fa sie\u0165 datacentra, SDN-kontrol\u00e9r, ako aj \u010fal\u0161ie komponenty potrebn\u00e9 pre konkr\u00e9tny projekt, vr\u00e1tane komponentov od in\u00fdch v\u00fdrobcov.<\/p>\n<p>Prv\u00fd a najjednoduch\u0161\u00ed scen\u00e1r spo\u010d\u00edva vo vyu\u017eit\u00ed minim\u00e1lneho po\u010dtu komponentov: sie\u0165 je vybudovan\u00e1 na hardv\u00e9rovej z\u00e1kladni Huawei a extern\u00fdch n\u00e1strojoch na automatiz\u00e1ciu procesov spr\u00e1vy siete a jej monitorovania, ako napr\u00edklad Ansible alebo Microsoft Azure.<\/p>\n<p>Druh\u00fd scen\u00e1r predpoklad\u00e1, \u017ee z\u00e1kazn\u00edk u\u017e pou\u017e\u00edva syst\u00e9m virtualiz\u00e1cie a SDN pre datacentr\u00e1, povedzme NSX, a chce vyu\u017ei\u0165 hardv\u00e9r Huawei ako hardv\u00e9rov\u00fd VTEP (Virtu\u00e1lny koncov\u00fd bod tunela) v r\u00e1mci existuj\u00faceho rie\u0161enia VMware. Na str\u00e1nke tejto spolo\u010dnosti <noindex><a rel=\"nofollow\" href=\"https:\/\/www.vmware.com\/resources\/compatibility\/pdf\/vi_hvxg_guide.pdf\">je uveden\u00fd zoznam<\/a><\/noindex> hardv\u00e9ru Huawei, ktor\u00fd bol testovan\u00fd a m\u00f4\u017ee by\u0165 pou\u017eit\u00fd ako VTEP. Ve\u010f nie je tajomstvom, \u017ee, nech s\u00fa softv\u00e9rov\u00e9 rie\u0161enia VXLAN (Virtu\u00e1lne roz\u0161\u00edren\u00e9 LAN) na virtu\u00e1lnych prep\u00edna\u010doch akoko\u013evek \u00faspe\u0161n\u00e9, hardv\u00e9rov\u00e9 realiz\u00e1cie s\u00fa z poh\u013eadu v\u00fdkonu efekt\u00edvnej\u0161ie.<\/p>\n<p>Tret\u00ed scen\u00e1r je v\u00fdstavba syst\u00e9mov triedy hosting &amp; computing, ktor\u00e9 obsahuj\u00fa kontrol\u00e9r, ale nemaj\u00fa \u017eiadnu nadriaden\u00fa platformu, s ktorou by sa museli integrova\u0165. Jednou z mo\u017enost\u00ed realiz\u00e1cie tak\u00e9ho scen\u00e1ra je samostatn\u00fd SDN-kontrol\u00e9r Agile Controller-DCN. T\u00fato architekt\u00faru m\u00f4\u017eu syst\u00e9mov\u00ed administr\u00e1tori pou\u017e\u00edva\u0165 na vykon\u00e1vanie ka\u017edodenn\u00fdch oper\u00e1ci\u00ed spr\u00e1vy siete. Rozvinutej\u0161\u00ed variant tretieho scen\u00e1ra sa buduje na spolupr\u00e1ci Agile Controller-DCN s VMware vCenter, spojen\u00fdmi ur\u010dit\u00fdm obchodn\u00fdm procesom, ale op\u00e4\u0165 bez nadriadenej administrat\u00edvnej s\u00fastavy.<\/p>\n<p>Zauj\u00edmav\u00fd je \u0161tvrt\u00fd scen\u00e1r \u2014 integr\u00e1cia s nadriadenou platformou na b\u00e1ze OpenStack alebo na\u0161ej virtualiza\u010dnej produktu FusionSphere. Registrujeme mno\u017estvo dopytov na tak\u00e9to architektonick\u00e9 rie\u0161enia, pri\u010dom najv\u00e4\u010d\u0161iu popularitu m\u00e1 OpenStack (CentOS, Red Hat a pod.). Z\u00e1vis\u00ed to od toho, ak\u00e1 platforma orchestrace a spr\u00e1vy v\u00fdpo\u010dtov\u00fdch zdrojov sa pou\u017e\u00edva v d\u00e1tovom centre.<\/p>\n<p>Piaty scen\u00e1r je \u00faplne nov\u00fd. Okrem \u0161iroko zn\u00e1mych hardv\u00e9rov\u00fdch prep\u00edna\u010dov obsahuje rozdelen\u00fd virtu\u00e1lny prep\u00edna\u010d CloudEngine 1800V (CE1800V), ktor\u00fd mo\u017eno prev\u00e1dzkova\u0165 iba s KVM (Kernel-based Virtual Machine). T\u00e1to architekt\u00fara predpoklad\u00e1 spojenie Agile Controller-DCN s platformou kontajneriz\u00e1cie Kubernetes pomocou pluginu CNI. Takto Huawei spolu so svetom smeruje <b>od virtualiz\u00e1cie hostite\u013eov k virtualiz\u00e1cii opera\u010dn\u00fdch syst\u00e9mov<\/b>.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/0ac9d479c1d5f48b5ad653779e5482b5.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Viac inform\u00e1ci\u00ed o kontajneriz\u00e1cii<\/h2>\n<p>\nU\u017e sme spomenuli virtu\u00e1lny prep\u00edna\u010d CE1800V, nasadzovan\u00fd pomocou Agile Controller-DCN. V kombin\u00e1cii s hardv\u00e9rov\u00fdmi prep\u00edna\u010dmi Huawei vytv\u00e1raj\u00fa ak\u00fdsi \"hybridn\u00fd overlay\". V bl\u00edzkej bud\u00facnosti dostan\u00fa kontajnerov\u00e9 sc\u00e9nare od Huawei podporu funkci\u00ed NAT a vyva\u017eovania z\u00e1\u0165a\u017ee. <\/p>\n<p>Obmedzen\u00edm architekt\u00fary je nemo\u017enos\u0165 pou\u017e\u00edva\u0165 CE1800V samostatne od Agile Controller-DCN. Rovnako treba ma\u0165 na pam\u00e4ti, \u017ee jeden PoD platformy Kubernetes m\u00f4\u017ee obsahova\u0165 maxim\u00e1lne 4 mili\u00f3ny kontajnerov.<\/p>\n<p>Pripojenie k VXLAN sieti d\u00e1tov\u00e9ho centra sa uskuto\u010d\u0148uje prostredn\u00edctvom VLAN (Virtual Local Area Network), existuje v\u0161ak aj mo\u017enos\u0165, pri ktorej CE1800V vystupuje ako VTEP s procesom BGP (Border Gateway Protocol). To umo\u017e\u0148uje v\u00fdmenu BGP tr\u00e1s s hlavn\u00fdm sie\u0165ov\u00fdm pripojen\u00edm bez potreby osobitn\u00fdch hardv\u00e9rov\u00fdch prep\u00edna\u010dov.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/d5f6bd495da94441ad359d3ba07bd812.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Siete riaden\u00e9 z\u00e1mermi: siete, ktor\u00e9 analyzuj\u00fa \u00famysly<\/h2>\n<p>\nKoncepcia siete riadenej z\u00e1mermi (IDN) Huawei <noindex><a rel=\"nofollow\" href=\"https:\/\/www.huawei.com\/ru\/news\/ru\/2018\/huawei_intent_driven_network\">predstavila<\/a><\/noindex> u\u017e v roku 2018. Odvtedy spolo\u010dnos\u0165 nepretr\u017eite pracovala na sie\u0165ach, ktor\u00e9 umo\u017e\u0148uj\u00fa analyzova\u0165 ciele a \u00famysly pou\u017e\u00edvate\u013eov pomocou technol\u00f3gie cloud computingu, ve\u013ek\u00fdch d\u00e1t a umelej inteligencie.<\/p>\n<p>V podstate hovor\u00edme o prechode od automatiz\u00e1cie k auton\u00f3mii. V\u00fdslovne vyjadren\u00fd z\u00e1mer pou\u017e\u00edvate\u013ea sa vracia vo forme odpor\u00fa\u010dan\u00ed sie\u0165ov\u00fdch produktov o tom, ako tento z\u00e1mer realizova\u0165. Z\u00e1kladom tejto funk\u010dnosti s\u00fa mo\u017enosti Agile Controller-DCN, ktor\u00e9 bud\u00fa pridan\u00e9 do produktu, aby sa zabezpe\u010dila realiz\u00e1cia ideol\u00f3gie IDN.<\/p>\n<p>Perspekt\u00edvne s implement\u00e1ciou IDN bude mo\u017en\u00e9 nasadzova\u0165 sie\u0165ov\u00e9 slu\u017eby jedn\u00fdm kliknut\u00edm, \u010do predpoklad\u00e1 vysok\u00fa \u00farove\u0148 automatiz\u00e1cie. Modul\u00e1rna architekt\u00fara funkci\u00ed siete a mo\u017enos\u0165 kombinova\u0165 tieto funkcie umo\u017en\u00ed administr\u00e1torovi jednoducho uvies\u0165, ktor\u00e9 slu\u017eby treba spr\u00edstupni\u0165 v konkr\u00e9tnom sie\u0165ovom segmente.<\/p>\n<p>Na dosiahnutie takejto \u00farovne spravovate\u013enosti je ve\u013emi d\u00f4le\u017eit\u00fd ZTP proces (Zero Touch Provisioning). Huawei dosiahla v tomto v\u00e1\u017ene \u00faspechy, v\u010faka \u010domu pon\u00faka mo\u017enos\u0165 \u00fapln\u00e9ho nasadenia siete \u201ez krabice\u201c.<\/p>\n<p>\u010eal\u0161\u00ed proces in\u0161tal\u00e1cie a nasadenia ur\u010dite zah\u0155\u0148a proced\u00faru overovania konektivity medzi zdrojmi (network connectivity) a hodnotenie zmien v\u00fdkonu siete v z\u00e1vislosti od re\u017eimov jej prev\u00e1dzky. T\u00e1to etapa predpoklad\u00e1 vykonanie simul\u00e1cie pred za\u010diatkom skuto\u010dnej prev\u00e1dzky.<\/p>\n<p>\u010eal\u0161\u00edm krokom je nastavenie slu\u017eieb pod\u013ea potrieb klienta (service provisioning) a ich overenie, ktor\u00e9 vykon\u00e1vaj\u00fa vstavan\u00e9 prostriedky Huawei. \u010ealej zost\u00e1va len skontrolova\u0165 v\u00fdsledok. <\/p>\n<p>Prejs\u0165 celou op\u00edsanou cestou je teraz mo\u017en\u00e9 pomocou jedn\u00e9ho komplexn\u00e9ho mechanizmu na b\u00e1ze platformy iMaster NCE, ktor\u00e1 obsahuje Agile Controller-DCN a syst\u00e9m spr\u00e1vy sie\u0165ov\u00fdch prvkov (EMS) eSight.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/5b1187048ef500373fb0de3cc9da0c79.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nV s\u00fa\u010dasnosti je Agile Controller-DCN schopn\u00fd kontrolova\u0165 dostupnos\u0165 zdrojov a pr\u00edtomnos\u0165 pripojen\u00ed, ako aj proakt\u00edvne (po schv\u00e1len\u00ed administr\u00e1torom) reagova\u0165 na vznikaj\u00face probl\u00e9my v sieti. Prid\u00e1vanie potrebn\u00fdch slu\u017eieb sa moment\u00e1lne vykon\u00e1va manu\u00e1lne, ale do bud\u00facna pl\u00e1nuje Huawei automatizova\u0165 t\u00fato a \u010fal\u0161ie oper\u00e1cie, ako je nasadenie serverov, konfigur\u00e1cia siet\u00ed pre \u00falo\u017eisko a pod. <\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/cc8175a271c07c3a1031bbc515832606.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Slu\u017eobn\u00e9 re\u0165azce a mikrosegment\u00e1cia<\/h2>\n<p>\nAgile Controller-DCN dok\u00e1\u017ee spracov\u00e1va\u0165 slu\u017eobn\u00e9 hlavi\u010dky (Net Service Headers, alebo NSH), ktor\u00e9 s\u00fa obsiahnut\u00e9 v VXLAN paketoch. To je u\u017eito\u010dn\u00e9 pri vytv\u00e1ran\u00ed slu\u017eobn\u00fdch re\u0165azcov. Napr\u00edklad, ak m\u00e1te v \u00famysle posla\u0165 ur\u010dit\u00e9 typy pakiet po ceste odli\u0161nej od tej, ktor\u00fa navrhuje \u0161tandardn\u00fd smerovac\u00ed protokol. Pred opusten\u00edm siete musia prejs\u0165 cez nejak\u00e9 zariadenie (firewall a pod.). Na to sta\u010d\u00ed nakonfigurova\u0165 slu\u017eobn\u00fd re\u0165azec, ktor\u00fd obsahuje potrebn\u00e9 pravidl\u00e1. Tento mechanizmus umo\u017e\u0148uje napr\u00edklad konfigurova\u0165 bezpe\u010dnostn\u00e9 politiky, ale s\u00fa mo\u017en\u00e9 aj in\u00e9 oblasti jeho vyu\u017eitia.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/d0a24cdc47123414f0cd9665eef3f6d2.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNa sch\u00e9me je n\u00e1zorne zn\u00e1zornen\u00e1 \u010dinnos\u0165 RFC-kompatibiln\u00fdch slu\u017eobn\u00fdch re\u0165azcov zalo\u017een\u00fdch na NSH, ako aj uveden\u00fd zoznam podporovan\u00fdch hardv\u00e9rov\u00fdch prep\u00edna\u010dov.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/a692ce587599b6a42ef96f9b0fe244b1.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nSchopnosti rie\u0161en\u00ed Huawei v oblasti tvorby slu\u017eobn\u00fdch re\u0165azcov s\u00fa doplnen\u00e9 n\u00e1strojmi mikrosegment\u00e1cie - met\u00f3dy sie\u0165ovej bezpe\u010dnosti, ktor\u00e1 predpoklad\u00e1 izol\u00e1ciu bezpe\u010dnostn\u00fdch segmentov a\u017e na jednotliv\u00e9 prvky pracovn\u00e9ho za\u0165a\u017eenia. Prekon\u00e1va\u0165 \u201e\u00fazke hrdlo\u201c zoznamov na riadenie pr\u00edstupu (Access Control List alebo ACL) pom\u00e1ha absencia potreby manu\u00e1lne konfigurova\u0165 obrovsk\u00e9 mno\u017estvo ACL.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/5342a188195be052d24e6455b6a2f409.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Inteligentn\u00e1 prev\u00e1dzka<\/h2>\n<p>\nPri prechode k ot\u00e1zke prev\u00e1dzky siete nemo\u017eno nespomen\u00fa\u0165 \u010fal\u0161iu s\u00fa\u010d\u00e1s\u0165 nadbrandu iMaster NCE \u2014 inteligentn\u00fd analyz\u00e1tor siete FabricInsight. Ten poskytuje \u0161irok\u00e9 mo\u017enosti na zber telemetrie a inform\u00e1ci\u00ed o pr\u00fadoch d\u00e1t v sieti. Telemetria sa zbiera pomocou gRPC a akumuluje d\u00e1ta o odoslan\u00fdch, oneskoren\u00fdch v pam\u00e4ti a stratenej paketoch. Druh\u00e1 ve\u013ek\u00e1 skupina inform\u00e1ci\u00ed sa agreguje pomocou ERSPAN (Encapsulated Remote Switch Port Analyzer) a poskytuje poh\u013ead na pr\u00fady d\u00e1t v d\u00e1tovom centre. V podstate ide o zber TCP hlavi\u010diek a objemov inform\u00e1ci\u00ed pren\u00e1\u0161an\u00fdch po\u010das ka\u017edej TCP rel\u00e1cie. Je to mo\u017en\u00e9 vykona\u0165 pomocou r\u00f4znych zariaden\u00ed Huawei - ich zoznam je uveden\u00fd na sch\u00e9me.<\/p>\n<p>Nezabudli sme ani na SNMP a NetStream, tak\u017ee Huawei vyu\u017e\u00edva star\u00e9 aj nov\u00e9 mechanizmy, aby pre\u0161iel od siete ako \u201e\u010diernej skrinky\u201c k sieti, o ktorej vieme doslova v\u0161etko.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/3848992743c7a3d2b5c5f957b7400ceb.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>AI Fabric: inteligentn\u00e9 siete bez str\u00e1t<\/h2>\n<p>\nFunkcie AI Fabric, podporovan\u00e9 na\u0161\u00edm vybaven\u00edm, maj\u00fa za cie\u013e premeni\u0165 Ethernet na sie\u0165 s vysok\u00fdm v\u00fdkonom, n\u00edzkymi oneskaniami a bez stratov\u00fdch paketov. To je nevyhnutn\u00e9 pre realiz\u00e1ciu \u00fa\u010deln\u00fdch scen\u00e1rov nasadenia aplik\u00e1ci\u00ed v sieti d\u00e1tov\u00e9ho centra.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/34ccce058878522aa4e4c99bc9912238.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNa vy\u0161\u0161ie uvedenej sch\u00e9me vid\u00edme probl\u00e9my, s ktor\u00fdmi sa m\u00f4\u017eeme stretn\u00fa\u0165 pri prev\u00e1dzke siete:<\/p>\n<ul>\n<li>strata paketov;<\/li>\n<li>preplnenie pam\u00e4te;<\/li>\n<li>probl\u00e9m optim\u00e1lneho za\u0165a\u017eenia siete pri pou\u017eit\u00ed paraleln\u00fdch liniek.<\/li>\n<\/ul>\n<p>Vo vybaven\u00ed Huawei s\u00fa implementovan\u00e9 mechanizmy, ktor\u00e9 umo\u017e\u0148uj\u00fa rie\u0161i\u0165 v\u0161etky tieto probl\u00e9my. Napr\u00edklad na \u00farovni \u010dipu je zaveden\u00e1 technol\u00f3gia virtu\u00e1lnych prich\u00e1dzaj\u00facich front, ktor\u00e1 z\u00e1rove\u0148 zabra\u0148uje blok\u00e1de na vstupe (HOL blocking). <\/p>\n<p>Na \u00farovni protokolov funguje mechanizmus Dynamic ECN \u2014 dynamick\u00e9 zmeny ve\u013ekosti pam\u00e4te, ako aj Fast CNP \u2014 r\u00fdchle odoslanie spr\u00e1v zdroju o probl\u00e9moch v sieti.<\/p>\n<p>Zrovna\u0165 pr\u00e1va pr\u00fadov <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Elephant_flow\">Sloni<\/a><\/noindex> a <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Mouse_flow\">My\u0161ky<\/a><\/noindex> pom\u00e1ha podpora technol\u00f3gie Dynamic Packet Prioritization (DPP), ktor\u00e1 spo\u010d\u00edva v umiestnen\u00ed kr\u00e1tkych fragmentov d\u00e1t z r\u00f4znych pr\u00fadov do samostatn\u00e9ho vysokoprioritn\u00e9ho frontu. Takto kr\u00e1tke pakety lep\u0161ie \u201epre\u017eij\u00fa\u201c v prostred\u00ed dlh\u00fdch, \u0165a\u017ek\u00fdch pr\u00fadov.<\/p>\n<p>Upresnime, \u017ee pre efekt\u00edvne fungovanie vy\u0161\u0161ie uveden\u00fdch mechanizmov musia by\u0165 v priamom s\u00falade s vybaven\u00edm.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/15a25ef31ed4e99d92e0a102bf14dae6.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nV\u0161etky tieto funkcie sa uplat\u0148uj\u00fa v jednom z troch scen\u00e1rov pou\u017e\u00edvania zariaden\u00ed Huawei:<\/p>\n<ul>\n<li>pri budovan\u00ed syst\u00e9mov umelej inteligencie zalo\u017een\u00fdch na distribuovan\u00fdch aplik\u00e1ci\u00e1ch;<\/li>\n<li>pri vytv\u00e1ran\u00ed distribuovan\u00fdch syst\u00e9mov na ukladanie d\u00e1t;<\/li>\n<li>pri budovan\u00ed syst\u00e9mov pre vysoko v\u00fdkonn\u00e9 v\u00fdpo\u010dty (HPC).<\/li>\n<\/ul>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/664109c043842d8bef878f7885955b63.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>My\u0161lienky pretaven\u00e9 do \u201ehardv\u00e9ru\u201c<\/h2>\n<p>\nPo diskusii o typick\u00fdch scen\u00e1roch vyu\u017eitia rie\u0161en\u00ed Huawei a ich hlavn\u00fdch mo\u017enostiach prejdime priamo k zariadeniam.<\/p>\n<p>CloudEngine 16800 je platforma, ktor\u00e1 predpoklad\u00e1 pr\u00e1cu s rozhraniami 400 Gbit\/s. Jej charakteristick\u00fdm rysom je pr\u00edtomnos\u0165 vlastn\u00fdch forwarding chip a procesora umelej inteligencie, potrebn\u00e9ho na implement\u00e1ciu mo\u017enost\u00ed AI Fabric.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/f5a9f3a7f34e32a638566fc240efd234.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nPlatforma je navrhnut\u00e1 pod\u013ea klasickej ortogon\u00e1lnej architekt\u00fary so syst\u00e9mom chladenia front to back a dod\u00e1va sa s jedn\u00fdm z troch typov \u0161asi \u2014 na 4 (10U), 8 (16U) alebo 16 (32U) slotov. <\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/9ff07f9b49f862fe10971a0c64692570.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nV CloudEngine 16800 m\u00f4\u017eu by\u0165 pou\u017eit\u00e9 r\u00f4zne typy line\u00e1rnych kariet. Medzi nimi s\u00fa ako tradi\u010dn\u00e9 10-gigabitov\u00e9, tak aj 40- a 100-gigabitov\u00e9, vr\u00e1tane \u00faplne nov\u00fdch. Na vydanie sa pripravuj\u00fa karty s rozhraniami 25 a 400 Gbit\/s.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/4c872b1b10169d0ee03522dcfa76b45f.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nPokia\u013e ide o prep\u00edna\u010de typu ToR (Top of rack), aktu\u00e1lne modely s\u00fa ozna\u010den\u00e9 na \u010dasovej osi vy\u0161\u0161ie. Najzauj\u00edmavej\u0161ie s\u00fa nov\u00e9 25-gigabitov\u00e9 modely, 100-gigabitov\u00e9 prep\u00edna\u010de s 400-gigabitov\u00fdmi uplinkmi a tie\u017e vysoko hust\u00e9 100-gigabitov\u00e9 s 96 portami.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/27c5f2915796ab6db875497dd901e99c.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nHlavn\u00fd prep\u00edna\u010d Huawei s fixnou konfigur\u00e1ciou v s\u00fa\u010dasnosti je CloudEngine 8850. Na jeho miesto by mala pr\u00eds\u0165 verzia 8851 s 32 rozhraniami 100 Gbit\/s a \u00f4smimi rozhraniami 400 Gbit\/s, ako aj mo\u017enos\u0165ou ich rozdelenia na 50, 100 alebo 200 Gbit\/s.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/9e43f610d14387ae7449b74220fbac88.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n\u010eal\u0161\u00ed prep\u00edna\u010d s fixnou konfigur\u00e1ciou CloudEngine 6865 zatia\u013e ost\u00e1va v portf\u00f3liu aktu\u00e1lnych produktov Huawei. Je to osved\u010den\u00e1 \u201epracovn\u00e1 k\u00f4\u0148\u201c s pr\u00edstupom 10 \/ 25 Gbit\/s a \u00f4smimi 100-gigabitov\u00fdmi uplinkmi. Pridajme, \u017ee tie\u017e podporuje AI Fabric.<\/p>\n<p><img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/485f8590a9eb87d40f2c9605aa60a788.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<img decoding=\"async\" alt=\"Huawei DCN: p\u00e4\u0165 scen\u00e1rov na vytvorenie d\u00e1tov\u00e9ho centra\" src=\"\/wp-content\/uploads\/2020\/07\/c41ecc9d4eee2da4838afe5d57e85a61.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNa sch\u00e9me s\u00fa vidite\u013en\u00e9 charakteristiky v\u0161etk\u00fdch nov\u00fdch modelov prep\u00edna\u010dov, ktor\u00fdch pr\u00edchod o\u010dak\u00e1vame v najbli\u017e\u0161\u00edch mesiacoch, ak nie t\u00fd\u017ed\u0148och. Niektor\u00e9 oneskorenie ich uvedenia s\u00favis\u00ed so situ\u00e1ciou okolo koronav\u00edrusu. Zatia\u013e s\u00fa aktu\u00e1lne aj ot\u00e1zky sank\u010dn\u00e9ho tlaku na spolo\u010dnos\u0165 Huawei, av\u0161ak tieto udalosti m\u00f4\u017eu ovplyvni\u0165 len term\u00edny premi\u00e9ry.<\/p>\n<p>Viac inform\u00e1ci\u00ed o rie\u0161eniach Huawei a mo\u017enostiach ich aplik\u00e1cie m\u00f4\u017eete jednoducho z\u00edska\u0165 prihl\u00e1sen\u00edm sa na na\u0161e webin\u00e1re alebo priamym kontaktovan\u00edm na\u0161ich z\u00e1stupcov.<\/p>\n<h2>***<\/h2>\n<p>\nPripom\u00edname, \u017ee na\u0161i odborn\u00edci pravidelne organizuj\u00fa webin\u00e1re o produktoch Huawei a o technol\u00f3gi\u00e1ch, ktor\u00e9 s\u00fa v nich vyu\u017e\u00edvan\u00e9. Zoznam webin\u00e1rov na najbli\u017e\u0161ie t\u00fd\u017edne je dostupn\u00fd na <noindex><a rel=\"nofollow\" href=\"https:\/\/e.huawei.com\/ru\/special_topic\/event\/2020q1\/ru-webinar-schedule-2020\">odkaze<\/a><\/noindex>.<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/huawei\/blog\/509974\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u0435\u0433\u043e\u0434\u043d\u044f \u0432 \u0444\u043e\u043a\u0443\u0441\u0435 \u043d\u0430\u0448\u0435\u0433\u043e \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u044f \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043b\u0438\u043d\u0435\u0439\u043a\u0430 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Huawei \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0441\u0435\u0442\u0435\u0439 \u0426\u041e\u0414, \u043d\u043e \u0438 \u0442\u043e, \u043a\u0430\u043a \u0441\u0442\u0440\u043e\u0438\u0442\u044c \u043d\u0430 \u0438\u0445 \u043e\u0441\u043d\u043e\u0432\u0435 \u043f\u0440\u043e\u0434\u0432\u0438\u043d\u0443\u0442\u044b\u0435 \u043a\u043e\u043c\u043f\u043b\u0435\u043a\u0441\u043d\u044b\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u044f. \u041d\u0430\u0447\u043d\u0451\u043c \u0441\u043e \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u0435\u0432, \u043f\u0435\u0440\u0435\u0439\u0434\u0451\u043c \u043a \u043a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u044b\u043c \u0444\u0443\u043d\u043a\u0446\u0438\u044f\u043c, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u043c \u043e\u0431\u043e\u0440\u0443\u0434\u043e\u0432\u0430\u043d\u0438\u0435\u043c, \u0430 \u0437\u0430\u043a\u043e\u043d\u0447\u0438\u043c \u043e\u0431\u0437\u043e\u0440\u043e\u043c \u043a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043c\u043e\u0433\u0443\u0442 \u043b\u0435\u0447\u044c \u0432 \u043e\u0441\u043d\u043e\u0432\u0443 \u0441\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 \u0426\u041e\u0414\u043e\u0432 \u0441 \u0432\u044b\u0441\u043e\u0447\u0430\u0439\u0448\u0438\u043c \u0443\u0440\u043e\u0432\u043d\u0435\u043c \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0437\u0430\u0446\u0438\u0438 \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432. \u041a\u0430\u043a\u0438\u043c\u0438 \u0431\u044b \u0432\u043f\u0435\u0447\u0430\u0442\u043b\u044f\u044e\u0449\u0438\u043c\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":87677,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-87676","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u0435\u0433\u043e\u0434\u043d\u044f \u0432 \u0444\u043e\u043a\u0443\u0441\u0435 \u043d\u0430\u0448\u0435\u0433\u043e \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u044f \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043b\u0438\u043d\u0435\u0439\u043a\u0430 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Huawei \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0441\u0435\u0442\u0435\u0439 \u0426\u041e\u0414, \u043d\u043e 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