Menene Ketarewar?
Ana amfani da Kayan Aikin Tsaron Cibiyar sadarwa a tsakanin hanyoyin sadarwa biyu ko fiye, kamar tsakanin hanyar sadarwa ta ciki da ta waje. Kayan Aikin Tsaron Cibiyar sadarwa ta hanyar nazarin fakitin hanyar sadarwa, don tantance ko akwai barazana, bayan an sarrafa su bisa ga wasu ƙa'idodin hanya don tura fakitin ya fita, kuma idan kayan aikin tsaro na cibiyar sadarwa sun yi matsala, Misali, bayan gazawar wutar lantarki ko faɗuwa, sassan hanyar sadarwa da aka haɗa da na'urar za a katse su daga juna. A wannan yanayin, idan kowace hanyar sadarwa tana buƙatar haɗawa da juna, to dole ne a wuce ta.
Aikin wucewa, kamar yadda sunan ya nuna, yana ba da damar hanyoyin sadarwa guda biyu su haɗu ta jiki ba tare da wucewa ta tsarin na'urar tsaron cibiyar sadarwa ta hanyar wani yanayi na musamman ba (lalacewar wutar lantarki ko faɗuwa). Saboda haka, lokacin da na'urar tsaron cibiyar sadarwa ta gaza, hanyar sadarwar da aka haɗa da na'urar Bypass za ta iya sadarwa da juna. Tabbas, na'urar sadarwar ba ta sarrafa fakiti a kan hanyar sadarwa.
Ta yaya ake rarraba Yanayin Aikace-aikacen Kewaya?
An raba kewaye zuwa hanyoyin sarrafawa ko abubuwan jawowa, waɗanda sune kamar haka
1. Wutar lantarki ce ke haifar da shi. A wannan yanayin, aikin Kewaya yana kunnawa lokacin da na'urar ta kashe. Idan na'urar ta kunna, aikin Kewaya zai kashe nan take.
2. Ana sarrafa shi ta hanyar GPIO. Bayan shiga cikin tsarin aiki, zaka iya amfani da GPIO don sarrafa takamaiman tashoshin jiragen ruwa don sarrafa maɓallin wucewa.
3. Sarrafa ta Watchdog. Wannan ƙari ne na yanayin 2. Kuna iya amfani da Watchdog don sarrafa kunnawa da kashe shirin GPIO Bypass don sarrafa matsayin Bypass. Ta wannan hanyar, idan dandamalin ya faɗi, Watchdog zai iya buɗe Bypass.
A aikace-aikacen aikace-aikace, waɗannan yanayi uku galibi suna wanzuwa a lokaci guda, musamman ma hanyoyi biyu na 1 da 2. Hanyar aikace-aikacen gabaɗaya ita ce: lokacin da na'urar ta kashe, ana kunna Bypass. Bayan na'urar ta kunna, BIOS yana kunna Bypass. Bayan BIOS ya karɓi na'urar, har yanzu ana kunna Bypass. Kashe Bypass don aikace-aikacen ya yi aiki. A duk lokacin fara aiki, kusan babu katsewar hanyar sadarwa.
Menene Ka'idar aiwatar da Tsarin Gaggawa?
1. Matakin Kayan Aiki
A matakin kayan aiki, ana amfani da relay galibi don cimma Bypass. Waɗannan relay ɗin suna da alaƙa da kebul na sigina na tashoshin sadarwa guda biyu na Bypass. Hoto mai zuwa yana nuna yanayin aiki na relay ta amfani da kebul na sigina ɗaya.
A matsayin misali, idan aka sami matsalar wutar lantarki, maɓallin da ke cikin relay zai yi tsalle zuwa yanayin 1, wato, Rx akan hanyar sadarwa ta RJ45 na LAN1 zai haɗu kai tsaye zuwa RJ45 Tx na LAN2, kuma lokacin da aka kunna na'urar, maɓallin zai haɗu zuwa 2. Ta wannan hanyar, idan ana buƙatar sadarwa tsakanin LAN1 da LAN2, kuna buƙatar yin hakan ta hanyar aikace-aikacen da ke kan na'urar.
2. Matakan Manhaja
A cikin rarrabuwar Bypass, an ambaci GPIO da Watchdog don sarrafawa da kuma haifar da Bypass. A zahiri, duka waɗannan hanyoyi biyu suna aiki da GPIO, sannan GPIO yana sarrafa relay akan kayan aikin don yin tsalle mai dacewa. Musamman, idan an saita GPIO mai dacewa zuwa babban matakin, relay zai tsalle zuwa matsayi na 1 daidai, yayin da idan an saita kofin GPIO zuwa ƙaramin matakin, relay zai tsalle zuwa matsayi na 2 daidai.
Ga Watchdog Bypass, an ƙara shi ne ta hanyar Watchdog control Bypass bisa ga ikon GPIO da ke sama. Bayan mai lura ya fara aiki, saita aikin don wucewa akan BIOS. Tsarin yana kunna aikin mai lura. Bayan mai lura ya fara aiki, ana kunna hanyar wucewa ta hanyar hanyar sadarwa kuma na'urar ta shiga yanayin wucewa. A zahiri, GPIO kuma tana sarrafa hanyar wucewa, amma a wannan yanayin, Watchdog ne ke yin rubutun ƙananan matakan zuwa GPIO, kuma ba a buƙatar ƙarin shirye-shirye don rubuta GPIO.
Aikin Kewaya Kayan Aiki (hardware Bypass) aiki ne da ya zama dole ga kayayyakin tsaro na cibiyar sadarwa. Idan na'urar ta kashe ko ta lalace, ana haɗa tashoshin jiragen ruwa na ciki da na waje ta jiki don samar da kebul na cibiyar sadarwa. Ta wannan hanyar, zirga-zirgar bayanai za ta iya wucewa ta cikin na'urar kai tsaye ba tare da ta shafi yanayin na'urar na yanzu ba.
Babban Aikace-aikacen Samuwa (HA):
Mylinking™ yana samar da mafita guda biyu masu yawan samuwa (HA), Active/Standby da Active/Active. Tsarin Active Standby (ko active/passive) yana tura kayan aikin taimako don samar da failover daga na'urori na farko zuwa na'urorin madadin. Kuma Active/Active yana tura zuwa hanyoyin haɗin da ba su da yawa don samar da failover lokacin da kowace na'urar Active ta gaza.
Mylinking™ Bypass TAP yana goyan bayan kayan aikin layi guda biyu masu amfani, waɗanda za a iya amfani da su a cikin mafita na Active/Standby. Ɗaya yana aiki a matsayin na'urar farko ko "Active". Na'urar Tsaya ko "Passive" har yanzu tana karɓar zirga-zirga a ainihin lokaci ta hanyar jerin Bypass amma ba a ɗaukarta a matsayin na'urar ciki ba. Wannan yana ba da damar "Zafi Tsaya". Idan na'urar aiki ta gaza kuma Bypass TAP ta daina karɓar bugun zuciya, na'urar jiran aiki ta atomatik za ta zama na'urar farko kuma ta zo kan layi nan take.
Menene fa'idodin da za ku iya samu dangane da hanyar wucewa ta mu?
1- Raba zirga-zirgar ababen hawa kafin da bayan kayan aikin da ke cikin layi (kamar WAF, NGFW, ko IPS) zuwa kayan aikin da ba na layi ba
2- Sarrafa kayan aikin layi da yawa a lokaci guda yana sauƙaƙa tarin tsaro kuma yana rage sarkakiyar hanyar sadarwa
3- Yana samar da tacewa, tattarawa, da daidaita kaya don hanyoyin haɗin yanar gizo
4-Rage haɗarin rashin hutu ba tare da shiri ba
5-Failover, yawan samuwa [HA]
Lokacin Saƙo: Disamba-23-2021
