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href="/digitalizacija-za-odprto-znanost">Digitalizacija za odprto znanost – vzpostavitev hrbteničnega omrežja</a>”, ki z nadgradnjo optične hrbtenice omrežja ARNES pomembno prispeva k razvoju sodobnega, dostopnega in konkurenčnega raziskovalnega in izobraževalnega okolja, na katerem lahko temelji napredek v znanosti kakor tudi povezovanje med raziskovalnimi institucijami. Ob organizacijah s področij izobraževanja, kulture in drugih upravičenih organizacijah, so zdaj <a href="/files/2024/03/JRO-povezane-v-hrbtenico-omrezja-ARNES.pdf" target="_blank" rel="noreferrer noopener">z novimi povezavami povezane vse slovenske javne raziskovalne organizacije</a>.</p> <p>Izvedena posodobitev optične hrbtenice omrežja ARNES za javne organizacija prinaša izjemen doprinos v obliki še bolj stabilnega delovanja medkrajevnih optičnih povezav, višje stopnje zanesljivosti delovanja in je zdaj z dvovlakenskimi povezavami odlična podlaga za vzpostavljanje novih, bistveno hitrejših povezav med vozlišči omrežja ARNES s hitrostmi od 100 Gb/s do 400 Gb/s ter pripravljenostjo na nove tehnologije s hitrostmi do 800 ali 1,6 Tb/s. S sredstvi NOO je bilo vzpostavljenih <a rel="noreferrer noopener" href="/files/2024/03/opticne-povezave-ARNES_NOO.pdf" target="_blank">40 novih medkrajevnih povezav</a> med vozlišči omrežja ARNES, ki so bile realizirane pri različnih ponudnikih optičnih vlaken. Vsa vozlišča so zdaj povezana v optične zanke, njihovo delovanje pa je bistveno bolj odporno na morebitne prekinitve posameznih medkrajevnih povezav.</p> <p>Projekt je bil uvrščen v Načrt za okrevanje in odpornost (NOO), ki ga sofinancirata Evropska unija – NextGenerationEU in Ministrstvo za visoko šolstvo, znanost in inovacije v okviru odziva Unije na pandemijo COVID-19. Vse informacije o izvajanju Načrta za okrevanje in odpornost (NOO) v Republiki Sloveniji najdete na spletni strani <a href="https://www.gov.si/zbirke/projekti-in-programi/nacrt-za-okrevanje-in-odpornost" target="_blank" rel="noreferrer noopener">noo.gov.si</a>.</p> <h3 class="wp-block-heading">Optične povezave</h3> <figure class="wp-block-image size-large is-resized"><img fetchpriority="high" decoding="async" width="842" height="595" src="https://www.arnes.si/files/2024/07/opticna-vlakna_20240322-1.svg" alt="" class="wp-image-49779" style="aspect-ratio:1.42;width:840px;height:auto"/></figure> <p>Licenca: CC BY 4.0</p> <h3 class="wp-block-heading">Hitrosti povezav</h3> <figure class="wp-block-image size-large is-resized"><img decoding="async" width="842" height="595" src="https://www.arnes.si/files/2025/03/hrbtenica-omrezja_20250323-2.svg" alt="" class="wp-image-51072" style="width:840px"/></figure> <p>Licenca: CC BY 4.0</p> <h2 class="wp-block-heading">Sistemski prostor</h2> <p>Omrežne naprave in računalniški strežniki za delovanje potrebujejo primerno in varno okolje s stabilnim virom električne energije in ustreznimi klimatskimi pogoji. V ta namen smo na Arnesu vzpostavili dva sistemska prostora, kjer sta nameščena centralno vozlišče omrežja ARNES in računalniška oprema, s katero zagotavljamo storitve. Sistemska prostora sta v naših prostorih v <a href="https://www.tp-lj.si/sl" target="_blank" rel="noreferrer noopener">Tehnološkem parku Ljubljana</a> in na <a href="https://www.ijs.si/ijsw" target="_blank" rel="noreferrer noopener">Institutu Jožef Stefan</a> v Ljubljani. Med seboj smo ju povezali z zmogljivimi povezavami, ki so speljane po fizično ločenih poteh, po zakupljeni optiki.</p> <h2 class="wp-block-heading">Omrežna infrastruktura</h2> <p class="has-very-light-gray-background-color has-background has-large-font-size">Našo omrežno infrastrukturo sestavljajo zmogljive in redundantne povezave med vozlišči, vozlišča z zmogljivo komunikacijsko in strežniško opremo ter naprave, ki zagotavljajo energijo in ustrezne klimatske pogoje za nemoteno delovanje opreme.</p> <h3 class="wp-block-heading">Hrbtenica omrežja</h3> <p>Hrbtenico omrežja ARNES predstavljajo zmogljive krajevne in medkrajevne povezave med vozlišči Arnesa v različnih krajih, ki so vzpostavljene na namenskih optičnih vlaknih in zaključene na zmogljivo komunikacijsko opremo (sistem DWDM, zgoščeno multipleksiranje z delitvijo valovne dolžine) ali na opremo za usmerjanje prometa IP kot so usmerjevalniki, stikala… </p> <p>Povezljivost med vozlišči Arnesa temelji predvsem na protokolu Ethernet, ki nam omogoča zanesljive in stabilne povezave hitrosti do 100 Gb/s ter omogoča enostavne nadgradnje na nove in hitrejše povezave. Ethernet nam omogoča povezljivost IP v celotnem omrežju, saj delujeta internetna protokola IPv4 in IPv6.</p> <p>Hrbtenico omrežja ARNES smo zasnovali v optičnih zankah med vozlišči, kar omogoča robustno in zanesljivo delovanje tudi v primerih posameznih prekinitev povezav.</p> <p>Hrbtenica omrežja ARNES je povezana na dve ločeni vozlišči omrežja GÉANT v Sloveniji in omogoča zanesljiv dostop do vseh storitev panevropskega omrežja ter posredno do drugih izobraževalnih in raziskovalnih omrežij po svetu kot so Internet2, ESnet, RedCLARA in drugi. Prav tako je vzpostavljena povezava v stičišče omrežij SIX.SI, na mednarodna ponudnika internetnega tranzita ter v italijansko raziskovalno in izobraževalno omrežje GARR.</p> <p>Z zmogljivo komunikacijsko opremo in programsko opremo na usmerjevalnikih prometa hrbtenica omrežja ARNES omogoča povezave točka-točka od ene do druge končne lokacije, ki so priključene na vozlišča hrbteničnega omrežja ali podobno povezljivost točka-točka do drugih držav ter kontinentov s storitvami omrežja GÉANT.</p> <p>Vozlišča v hrbteničnem omrežju ARNES so namenjena povezovanju organizacij, ki so upravičene do naših storitev, z opremo, ki jo določimo in upravljamo na Arnesu ali z opremo organizacije, vendar z obvezno uporabo protokola BGP. Organizacije se lahko z uporabo protokola BGP in ustreznih usmerjevalnikov prometa redundantno povezujejo na več vozlišč Arnesa.</p> <h3 class="wp-block-heading">Vozlišča</h3> <p><a href="https://www.arnes.si/files/2025/02/seznam-vozlisc-arnes_20250101.pdf" data-type="link" data-id="/wp-content/blogs.dir/56857/files/2023/08/seznam-vozlisc-arnes_20211223.pdf" target="_blank" rel="noreferrer noopener">Vozlišča</a> omrežja ARNES smo vzpostavili na različnih lokacijah po Sloveniji, pri čemer smo izbirali kraje, ki so najbolj primerni za priključitev in vzpostavitev povezav do večjega števila članic. Lokacije smo izbrali tam, kjer smo našli gostitelje z ustreznimi prostori za opremo ter kjer so ponudniki optičnih povezav zagotovili zanesljivo in redundantno povezavo do sosednjih vozlišč ter omogočili čim več optičnih povezav do članic.</p> <p>Naša vozlišča v veliki meri gostujejo na vzgojno-izobraževalnih zavodih, knjižnicah in drugih članicah in so del hrbteničnega omrežja ARNES. Glavni vozlišči Arnesa sta na lokaciji Instituta Jožef Stefan in na sedežu Arnesa v Tehnološkem parku Ljubljana.</p> <p>Organizacije, ki so upravičene do Arnesovih storitev in pridobijo soglasje za povezavo do katerega od naših vozlišč ali do več njih za redundantno povezavo, naj nas za več informacij, kako povezati svoje lokalno računalniško omrežje na vozlišča Arnesa, kontaktirajo na naslov <a href="mailto:svetovanje@arnes.si">svetovanje@arnes.si</a> ali na telefonsko številko 01 479 88 00.</p> <p>Enako svetujemo tistim, ki bi želeli povezavo v omrežje ARNES za znanstveni projekt, še posebej, če gre za direktno povezavo točka-točka, ali povezavo do storitev omrežja GEANT in z omenjenim omrežjem do drugih kontinentov ter raziskovalnih omrežij.</p> <h3 class="wp-block-heading">SIX.SI – stičišče omrežij</h3> <p>Na Arnesu upravljamo <a href="https://www.six.si/">stičišče omrežij SIX.SI</a> (Slovenian Internet eXchange), ki je namenjeno lokalni izmenjavi prometa IPv4 in IPv6 med ponudniki interneta, ponudniki vsebin in ponudniki gostovanja. Z upravljanjem SIX.SI omogočamo hitrejšo izmenjavo prometa med člani in znatno skrajšamo pot, ki jo morajo podatki prepotovati od ponudnika vsebin do uporabnika.</p> <p>Člani SIX.SI se lahko v stičišče omrežij povežete na dveh lokacijah v Ljubljani, kjer so omogočene povezave s hitrostmi do nekajkrat 100 Gb/s.</p> <a href="https://www.sling.si/"><div id='quickfact-block_5f1a9b70de649' class="container quickfact quickfact" style="background-image:url('https://www.arnes.si/files/2020/08/Artboard5_3.svg');background-position: 50% 25%; background-repeat: no-repeat; padding: 200px 20px 20px 20px; background-color: #E9E9F4;"> <p style="text-align: center">Povezujemo slovenske superračunalnike, na katerih znanstveniki izvajajo napredne raziskave. 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