Network Packet Broker (NPB) ndi chosinthira ngati chida chapaintaneti chomwe chimakhala kukula kuchokera pazida zonyamula kupita ku 1U ndi 2U mayunitsi amilandu kupita kumilandu yayikulu ndi ma board. Mosiyana ndi chosinthira, NPB sisintha magalimoto omwe amadutsamo mwanjira iliyonse pokhapokha atalangizidwa momveka bwino. NPB imatha kulandira magalimoto panjira imodzi kapena zingapo, kuchita ntchito zodziwikiratu pamagalimotowo, kenako ndikuzitulutsa kunjira imodzi kapena zingapo.
Izi nthawi zambiri zimatchedwa aliyense-kwa-aliyense, zambiri-ku-zilizonse, ndi mapu amtundu uliwonse. Ntchito zomwe zingatheke zimachokera ku zosavuta, monga kutumiza kapena kutaya magalimoto, mpaka zovuta, monga kusefa zambiri pamwamba pa wosanjikiza 5 kuti mudziwe gawo linalake. Zolumikizira pa NPB zitha kukhala zolumikizira zingwe zamkuwa, koma nthawi zambiri zimakhala mafelemu a SFP / SFP + ndi QSFP, omwe amalola ogwiritsa ntchito kugwiritsa ntchito ma media osiyanasiyana komanso kuthamanga kwa bandwidth. Mawonekedwe a NPB amamangidwa pa mfundo yakukulitsa luso la zida zapaintaneti, makamaka kuyang'anira, kusanthula, ndi zida zachitetezo.
Kodi Network Packet Broker imapereka ntchito ziti?
Kuthekera kwa NPB ndikwambiri ndipo kumatha kusiyanasiyana kutengera mtundu ndi mtundu wa chipangizocho, ngakhale wogulitsa phukusi aliyense yemwe ali ndi mchere wake amafuna kukhala ndi kuthekera koyambira. NPB yambiri (yodziwika kwambiri NPB) imagwira ntchito pa OSI zigawo 2 mpaka 4.
Nthawi zambiri, mutha kupeza zotsatirazi pa NPB ya L2-4: magalimoto (kapena magawo ake enieni) kuwongolera, kusefa magalimoto, kubwerezabwereza, kuvula kwa protocol, kudula mapaketi (kudulira), kuyambira kapena kuletsa ma protocol osiyanasiyana amakanema, ndi katundu balancing kwa magalimoto. Monga zikuyembekezeredwa, L2-4's NPB imatha kusefa VLAN, zilembo za MPLS, ma adilesi a MAC (gwero ndi chandamale), ma adilesi a IP (gwero ndi chandamale), madoko a TCP ndi UDP (gwero ndi chandamale), komanso mbendera za TCP, komanso ICMP, SCTP, ndi ARP traffic. Izi siziyenera kugwiritsidwa ntchito, koma zimapereka lingaliro la momwe NPB imagwirira ntchito pazigawo 2 mpaka 4 ingalekanitse ndikuzindikira magawo amsewu. Chofunikira chachikulu chomwe makasitomala ayenera kuyang'ana mu NPB ndi ndege yosatsekereza.
Netiweki paketi Broker ikuyenera kukwaniritsa kuchuluka kwa magalimoto padoko lililonse pa chipangizocho. Mu dongosolo la chassis, kulumikizana ndi backplane kuyeneranso kukumana ndi kuchuluka kwa magalimoto pama module olumikizidwa. Ngati NPB igwetsa paketi, zida izi sizidzakhala ndi chidziwitso chonse cha maukonde.
Ngakhale kuchuluka kwa NPB kumachokera ku ASIC kapena FPGA, chifukwa cha kutsimikizika kwa magwiridwe antchito a paketi, mupeza zophatikiza zambiri kapena ma CPU ovomerezeka (kudzera ma module). The Mylinking™ Network Packet Brokers(NPB) adatengera yankho la ASIC. Izi nthawi zambiri zimakhala zomwe zimapereka kusintha kosinthika kotero kuti sizingachitike mu Hardware. Izi zikuphatikiza kuchotsera paketi, masitampu anthawi, kumasulira kwa SSL/TLS, kusaka kwa mawu osakira, ndi kusaka kwamawu pafupipafupi. Ndikofunikira kudziwa kuti magwiridwe antchito ake amadalira magwiridwe antchito a CPU. (Mwachitsanzo, kusaka kwanthawi zonse kwamtundu womwewo kumatha kubweretsa zotsatira zosiyana kwambiri malinga ndi mtundu wa magalimoto, kuchuluka kofananira, ndi bandiwifi), kotero sikophweka kudziwa musanagwiritse ntchito.
Ngati zinthu zomwe zimadalira CPU zithandizidwa, zimakhala zolepheretsa pakuchita kwathunthu kwa NPB. Kubwera kwa tchipisi ta cpus ndi zosinthika zosinthika, monga Cavium Xpliant, Barefoot Tofino ndi Innovium Teralynx, zidapanganso maziko a kuthekera kokulirapo kwa othandizira mapaketi am'badwo wotsatira, magawo ogwira ntchitowa amatha kuthana ndi magalimoto pamwamba pa L4 (nthawi zambiri amatchedwa monga othandizira paketi ya L7). Zina mwazinthu zapamwamba zomwe tazitchula pamwambapa, mawu osakira komanso kusaka pafupipafupi ndi zitsanzo zabwino za kuthekera kwa m'badwo wotsatira. Kutha kusaka pamapaketi olipidwa kumapereka mwayi wosefera kuchuluka kwa anthu pagawoli komanso magawo ogwiritsira ntchito, komanso kumapereka kuwongolera bwino pamaneti omwe akusintha kuposa L2-4.
Kodi Network Packet Broker imalowa bwanji muzomangamanga?
NPB ikhoza kukhazikitsidwa mu network network m'njira ziwiri zosiyana:
1 - Paintaneti
2- Kutuluka kwa gulu.
Njira iliyonse ili ndi ubwino ndi kuipa kwake ndipo imathandizira kuwongolera magalimoto m'njira zomwe njira zina sizingathe. The inline network packet broker ali ndi nthawi yeniyeni ya traffic yomwe imadutsa chipangizocho popita komwe akupita. Izi zimapereka mwayi wowongolera magalimoto munthawi yeniyeni. Mwachitsanzo, powonjezera, kusintha, kapena kufufuta ma tag a VLAN kapena kusintha ma adilesi a IP komwe mukupita, kuchuluka kwa magalimoto kumakopera ulalo wachiwiri. Monga njira yapaintaneti, NPB imathanso kuperekeranso zida zina zapaintaneti, monga IDS, IPS, kapena zozimitsa moto. NPB imatha kuyang'anira momwe zida zotere zilili ndikusinthanso magalimoto kupita ku standby yotentha zikakanika.
Zimapereka kusinthasintha kwakukulu momwe magalimoto amagwiritsidwira ntchito ndikufaniziridwa kuzipangizo zingapo zowunikira ndi chitetezo popanda kukhudza intaneti yeniyeni. Imaperekanso mawonekedwe osaneneka a netiweki ndikuwonetsetsa kuti zida zonse zimalandila kopi yamayendedwe ofunikira kuti athe kusamalira bwino maudindo awo. Sizimangotsimikizira kuti zida zanu zowunikira, chitetezo, ndi zowunikira zimapeza magalimoto omwe amafunikira, komanso kuti maukonde anu ndi otetezeka. Imawonetsetsanso kuti chipangizocho sichimawononga zinthu pamagalimoto osafunika. Mwina network analyzer yanu safunikira kujambula zosunga zobwezeretsera chifukwa zimatengera malo ofunikira a disk panthawi yosunga zobwezeretsera. Zinthu izi zimasefedwa mosavuta kuchokera ku analyzer ndikusunga magalimoto ena onse a chida. Mwinamwake muli ndi subnet yonse yomwe mukufuna kubisala ku machitidwe ena; kachiwiri, izi mosavuta kuchotsedwa pa osankhidwa linanena bungwe doko. M'malo mwake, NPB imodzi imatha kukonza maulalo ena apamsewu pomwe ikukonza magalimoto ena omwe ali kunja kwa gulu.
Nthawi yotumiza: Mar-09-2022
