{"id":46399,"date":"2022-01-21T14:10:21","date_gmt":"2022-01-21T13:10:21","guid":{"rendered":"https:\/\/www.soitron.com\/?p=46399"},"modified":"2022-06-02T15:42:27","modified_gmt":"2022-06-02T14:42:27","slug":"sdx-je-univerzalni-odpovedi","status":"publish","type":"post","link":"https:\/\/new.soitron.com\/cs\/sdx-je-univerzalni-odpovedi\/","title":{"rendered":"SDx je univerz\u00e1ln\u00ed odpov\u011bd\u00ed"},"content":{"rendered":"\n

SDN, SDA, SD WAN<\/a>, IBN, VDC, digit\u00e1ln\u00ed transformace, orchestrace \u010di automatizace. V posledn\u00edch letech jsou spr\u00e1vci s\u00ed\u0165ov\u00e9 infrastruktury bombardovan\u00ed mno\u017estv\u00edm nov\u00fdch pojm\u016f nav\u00e1zan\u00fdch na r\u016fzn\u00e1 \u0159e\u0161en\u00ed v\u00fdrobc\u016f v kl\u00ed\u010dov\u00e9m t\u00e9matu dne\u0161n\u00ed s\u00ed\u0165a\u0159iny zast\u0159e\u0161en\u00e9 obecn\u00fdm pojmenov\u00e1n\u00edm SDx<\/a>.<\/em><\/p>\n\n\n\n

Z\u00e1sadn\u00ed zm\u011bnou dne\u0161ka je digitalizace. Zasahuje t\u00e9m\u011b\u0159 v\u0161echny oblasti lidsk\u00e9 \u010dinnosti. Obrovsky roste po\u010det za\u0159\u00edzen\u00ed, kter\u00e1 jsou p\u0159ipojov\u00e1na do s\u00edt\u011b. T\u00e9m\u011b\u0159 v\u0161echno m\u00e1 dnes IP adresu. V\u0161e mus\u00ed b\u00fdt s\u00ed\u0165ov\u011b obslu\u017en\u00e9, a p\u0159itom mus\u00ed b\u00fdt zachov\u00e1na bezpe\u010dnost p\u0159enosu.<\/p>\n\n\n\n

To si vynutilo z\u00e1sadn\u00ed zm\u011bnu p\u0159\u00edstupu k \u0159\u00edzen\u00ed a spr\u00e1v\u011b s\u00edt\u00ed. Touto zm\u011bnou je odd\u011blen\u00ed \u0159\u00edd\u00edc\u00edch a u\u017eivatelsk\u00fdch dat do samostatn\u00fdch tok\u016f, co\u017e otev\u00edr\u00e1 cestu k vyu\u017eit\u00ed r\u016fzn\u00fdch druh\u016f automatiza\u010dn\u00edch n\u00e1stroj\u016f \u2013 orchestr\u00e1tor\u016f na v\u0161ech \u00farovn\u00edch s\u00ed\u0165ov\u00e9 architektury. Datov\u00e1 s\u00ed\u0165 je slo\u017eit\u00fd a komplexn\u00ed syst\u00e9m. Zcela jin\u00e9 v\u00fdzvy se potom \u0159e\u0161\u00ed v datov\u00fdch centrech nebo ve WAN p\u0159enosov\u00fdch tras\u00e1ch \u010di na \u00farovni p\u0159\u00edstupu u\u017eivatel\u016f.<\/p>\n\n\n\n

“Zat\u00edmco tradi\u010dn\u00ed sv\u011bt se to\u010d\u00ed kolem hardwaru, SDx se od HW odpout\u00e1v\u00e1 a s\u00ed\u0165 se buduje softwarov\u011b, pomoc\u00ed n\u00e1stroj\u016f pro orchestraci a automatizaci.”<\/em><\/p><\/blockquote>\n\n\n\n

S\u00ed\u0165 rozhoduje sama<\/h2>\n\n\n\n

Pokud se pod\u00edv\u00e1me detailn\u011bji, rozlehl\u00e9 WAN s\u00edt\u011b m\u011bly tradi\u010dn\u011b centralizovan\u00fd design. Pobo\u010dky komunikovaly s centr\u00e1lou, kde byly v datov\u00e9m centru instalov\u00e1ny aplika\u010dn\u00ed servery. P\u0159\u00edstup k internetu byl tak\u00e9 centr\u00e1ln\u00ed, chr\u00e1n\u011bn\u00fd bezpe\u010dnostn\u00edm perimetrem s\u00edt\u011b. Dnes je v\u0161echno trochu jinak, st\u00e1le se samoz\u0159ejm\u011b pou\u017e\u00edvaj\u00ed vlastn\u00ed priv\u00e1tn\u00ed datov\u00e1 centra, ale u\u017eivatel\u00e9 st\u00e1le \u010dast\u011bji p\u0159istupuj\u00ed na servery provozovan\u00e9 v cloudu. Typick\u00fdmi p\u0159\u00edklady jsou slu\u017eby, jako jsou Office 365, Dropbox \u010di kolabora\u010dn\u00ed aplikace jako Cisco WebEx a Microsoft Teams. S\u00ed\u0165 proto pot\u0159ebuje vid\u011bt, jakou aplikaci u\u017eivatel vyu\u017e\u00edv\u00e1, zn\u00e1t jej\u00ed n\u00e1roky na kvalitu p\u0159enosu, zabezpe\u010den\u00ed a kapacitu, a z\u00e1rove\u0148 um\u011bt posoudit aktu\u00e1ln\u00ed kvalitu komunika\u010dn\u00edch tras. Na z\u00e1klad\u011b p\u0159eddefinovan\u00fdch pravidel pak rozhodne, kterou z dostupn\u00fdch tras pou\u017eije pro komunikaci.<\/p>\n\n\n\n

Tento p\u0159\u00edstup umo\u017en\u00ed nap\u0159\u00edklad pravideln\u00e9 aktualizace Microsoft Office 365 sm\u011b\u0159ovat p\u0159\u00edmo mezi pobo\u010dkou a internetem\/cloudem a \u0161et\u0159it p\u00e1smo intern\u00edch linek pro kritick\u00e9 aplikace v datov\u00e9m centru.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

SDx na \u00farovni p\u0159\u00edstupu u\u017eivatele, tedy SD access nebo SD LAN<\/a>, zase p\u0159edstavuje softwarov\u011b budovanou a \u0159\u00edzenou lok\u00e1ln\u00ed s\u00ed\u0165 v\u010detn\u011b Wi-Fi, kter\u00e1 umo\u017e\u0148uje automatizovanou konfiguraci, sb\u011br telemetrick\u00fdch dat a zero touch deployment za\u0159\u00edzen\u00ed. Segmentace \u0159e\u0161\u00ed bezpe\u010dnost hlavn\u011b pomoc\u00ed identity v cel\u00e9 s\u00edti bez vymezen\u00ed.<\/p>\n\n\n\n

Mozkem SDA je orchestr\u00e1tor<\/h2>\n\n\n\n

V dne\u0161n\u00ed dob\u011b se pracuje s parametry jako role u\u017eivatele, m\u00edsto a \u010das a forma p\u0159ipojen\u00ed. U\u017eivatel si potom po celou dobu nese svou identitu, kterou je ozna\u010den v r\u00e1mci cel\u00e9 s\u00edt\u011b. Prvky pak v\u011bd\u00ed, jak\u00fd druh p\u0159\u00edstupu m\u016f\u017ee u\u017eivateli povolit. D\u00edky t\u00e9to identifikaci lze z\u00edskat v\u011bt\u0161\u00ed p\u0159ehled a mo\u017enost c\u00edlen\u011b uplatnit pravidla komunikace. SDA (softwarov\u011b definovan\u00fd p\u0159\u00edstup) se z funk\u010dn\u00edho hlediska potom buduje na z\u00e1klad\u011b bezpe\u010dnostn\u00edch pravidel, kter\u00e1 jsou z\u00e1kladem politik pro komunikaci v s\u00edti.<\/p>\n\n\n\n

Nemal\u00e9 v\u00fdzvy \u010dekaj\u00ed i v oblasti datov\u00fdch center, kde se setk\u00e1v\u00e1 \u010dasto i dvacetilet\u00e1 historie firemn\u00edch aplikac\u00ed s dynamick\u00fdm sv\u011btem kontejner\u016f, v\u00fdvoje, testov\u00e1n\u00ed a deploymentu nejnov\u011bj\u0161\u00edch verz\u00ed. Datov\u00e1 centra b\u00fdvaj\u00ed distribuovan\u00e1, aplikace mohou b\u00fdt rozprost\u0159en\u00e9 mezi v\u00edcero lokalit, a aby byla chr\u00e1n\u011bna data, je zapot\u0159eb\u00ed spolehliv\u011b odd\u011blit jednotliv\u00e9 aplika\u010dn\u00ed vrstvy. To si vy\u017eaduje konfiguraci za\u0159\u00edzen\u00ed s r\u016fznou funkcionalitou (switche, load ballancery). Orchestr\u00e1tor je potom t\u00edm n\u00e1strojem, kter\u00fd umo\u017en\u00ed p\u0159ehledn\u00e9 uplat\u0148ov\u00e1n\u00ed a spr\u00e1vu definovan\u00fdch politik v cel\u00e9m prost\u0159ed\u00ed.<\/p>\n\n\n\n

Deset nebo dv\u011b minuty?<\/h2>\n\n\n\n

V\u00fdznamnou p\u0159idanou hodnotou je sb\u011br, ukl\u00e1d\u00e1n\u00ed a vyhodnocov\u00e1n\u00ed telemetrick\u00fdch dat a mo\u017enost p\u0159istoupit k nim z jednoho m\u00edsta. Jednou z oblast\u00ed, kde je p\u0159\u00ednos SDN (softwarov\u011b definovan\u00e9 s\u00edt\u011b) nejen viditeln\u00fd, ale i m\u011b\u0159iteln\u00fd, je troubleshooting.<\/p>\n\n\n\n

V tradi\u010dn\u00edm pojet\u00ed se p\u0159\u00ed\u010diny v\u00fdpadku Wi-Fi access pointu (AP) \u0159e\u0161\u00ed pomoc\u00ed n\u011bkolika konzol\u00ed nebo u\u017eivatelsk\u00fdch rozhran\u00ed. Prov\u011b\u0159ov\u00e1n\u00ed konfigurac\u00ed, log\u016f a report\u016f na switchi, Wi-Fi kontroleru, anebo v AP zabere p\u0159ibli\u017en\u011b deset minut. V SDN se cel\u00e1 s\u00ed\u0165 \u0159e\u0161\u00ed z jednoho m\u00edsta v r\u00e1mci nastaven\u00ed, zaznamen\u00e1v\u00e1n\u00ed ud\u00e1lost\u00ed anebo prohl\u00ed\u017een\u00ed stavu v re\u00e1ln\u00e9m \u010dase. K dispozici jsou telemetrick\u00e1 data z cel\u00e9 infrastruktury, lze se pod\u00edvat na radiofrekven\u010dn\u00ed spektrum jednotliv\u00fdch p\u0159\u00edstupov\u00fdch bod\u016f, zjistit ru\u0161en\u00ed, zahlcen\u00ed kan\u00e1l\u016f, odpojen\u00ed klient\u016f, a tak zjistit p\u0159\u00ed\u010diny. V\u0161e je chronologicky se\u0159azen\u00e9 v bohat\u00e9 historii. V\u00fdsledkem je, \u017ee vy\u0159e\u0161it stejn\u00fd probl\u00e9m lze do dvou minut. Rozd\u00edl osmi minut se m\u016f\u017ee zd\u00e1t nepatrn\u00fdm, pokud se v\u0161ak naraz\u00ed na komplikovan\u011bj\u0161\u00ed probl\u00e9my, p\u0159\u00ednos SDN se za\u010dne naplno projevovat.<\/p>\n\n\n\n

\u0158e\u0161en\u00ed pro ka\u017ed\u00e9ho<\/h2>\n\n\n\n

V\u0161ichni v\u00fdznamn\u00ed v\u00fdrobci na trhu poskytuj\u00ed vlastn\u00ed verzi sofwarem definovan\u00fdch s\u00edt\u00ed, reprezentovan\u00e9 vlastn\u00edm orchestr\u00e1torem, v\u011bt\u0161inou nav\u00e1zan\u00fdm na vlastn\u00ed hardware. \u0158e\u0161en\u00ed se navz\u00e1jem li\u0161\u00ed p\u0159\u00edstupem k architektu\u0159e, \u0161k\u00e1lov\u00e1n\u00ed \u010di zam\u011b\u0159en\u00edm na konkr\u00e9tn\u00ed oblast.<\/p>\n\n\n\n

Tento na prvn\u00ed pohled mo\u017en\u00e1 nelogick\u00fd fakt vypl\u00fdv\u00e1 z po\u017eadavku z\u00e1kazn\u00edk\u016f. Zat\u00edmco klienta s pobo\u010dkami bude tr\u00e1pit cena p\u0159enosov\u00fdch tras a p\u0159\u00edm\u00e9ho p\u0159ipojen\u00ed k internetu, jin\u00e9 probl\u00e9my bude \u0159e\u0161it univerzita, kde se mno\u017estv\u00ed u\u017eivatel\u016f, kter\u00e9 se \u010dasto m\u011bn\u00ed, pot\u0159ebuje bezpe\u010dn\u011b p\u0159ipojit k datov\u00e9mu centru a spou\u0161t\u011bt na vzd\u00e1len\u00fdch za\u0159\u00edzen\u00edch vlastn\u00ed projekty. Obecn\u011b lze \u0159\u00edci, \u017ee zat\u00edmco tradi\u010dn\u00ed sv\u011bt se to\u010d\u00ed kolem hardwaru, SDx<\/a> se od HW odpout\u00e1v\u00e1 a s\u00ed\u0165 se buduje softwarov\u011b, pomoc\u00ed n\u00e1stroj\u016f pro orchestraci a automatizaci.<\/p>\n\n\n\n

<\/div>\n","protected":false},"excerpt":{"rendered":"

SDN, SDA, SD WAN, IBN, VDC, digit\u00e1ln\u00ed transformace, orchestrace \u010di automatizace. V posledn\u00edch letech jsou spr\u00e1vci s\u00ed\u0165ov\u00e9 infrastruktury bombardovan\u00ed mno\u017estv\u00edm nov\u00fdch pojm\u016f nav\u00e1zan\u00fdch na r\u016fzn\u00e1 \u0159e\u0161en\u00ed v\u00fdrobc\u016f v kl\u00ed\u010dov\u00e9m t\u00e9matu dne\u0161n\u00ed s\u00ed\u0165a\u0159iny zast\u0159e\u0161en\u00e9 obecn\u00fdm pojmenov\u00e1n\u00edm SDx. Z\u00e1sadn\u00ed zm\u011bnou dne\u0161ka je digitalizace. Zasahuje t\u00e9m\u011b\u0159 v\u0161echny oblasti lidsk\u00e9 \u010dinnosti. Obrovsky roste po\u010det za\u0159\u00edzen\u00ed, kter\u00e1 jsou p\u0159ipojov\u00e1na do […]<\/p>\n","protected":false},"author":28,"featured_media":26897,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[144,155],"tags":[316],"news_categories":[392],"class_list":["post-46399","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-clanky-cs","category-it-infrastruktura-cs","tag-sitova-reseni","news_categories-sitova-reseni"],"acf":[],"yoast_head":"\nSDx je univerz\u00e1ln\u00ed odpov\u011bd\u00ed - Soitron<\/title>\n<meta name=\"description\" content=\"Zat\u00edmco tradi\u010dn\u00ed sv\u011bt se to\u010d\u00ed kolem hardwaru, SDx (softwarov\u011b definovan\u00e9 s\u00edt\u011b) se od HW odpout\u00e1v\u00e1 a s\u00ed\u0165 se buduje softwarov\u011b.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SDx je univerz\u00e1ln\u00ed odpov\u011bd\u00ed - 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