Qhov txawv ntawm IPv4 thiab IPv6 piav qhia
Pendahuluuan
Lub Internet Protocol (IP) yog lub hauv paus ntawm Internet, ua rau cov khoos phis tawj sib txuas lus nrog ib leeg ntawm lub network thoob ntiaj teb. Ob lub ntsiab lus tseem ceeb ntawm cov protocol no yog IPv4 (Internet Protocol version 4) thiab IPv6 (Internet Protocol version 6). Txawm hais tias ob qho tib si tseem ceeb rau lub network ecosystem, muaj qhov sib txawv tseem ceeb ntawm lawv. Hauv tsab xov xwm no, peb yuav tham txog cov qhov sib txawv no kom meej.
Keeb Kwm IPv4
Keeb Kwm thiab Kev Siv
IPv4 tau tsim tawm xyoo 1983 ua ib feem ntawm ARPANET, uas yog tus thawj coj ntawm Internet niaj hnub no. IPv4 tau ua haujlwm ua tus qauv txheem rau ntau tshaj peb xyoo caum thiab tseem tswj hwm feem ntau ntawm cov tes hauj lwm hauv ntiaj teb. Qhov laj thawj tseem ceeb rau qhov ntev no yog qhov sib xws ntawm cov tes hauj lwm, kho vajtse, thiab software uas twb muaj lawm nrog IPv4.
Cov Qauv Chaw Nyob IP
Ib qho chaw nyob IPv4 yog 32-bits muab faib ua plaub ntu sib cais los ntawm cov cim (.), piv txwv li 192.168.1.1. Txhua ntu, lossis octet, tuaj yeem muaj tus nqi ntawm 0 thiab 255. Qhov no muab IPv4 qhov chaw nyob ntawm kwv yees li 4,3 billion qhov chaw nyob tshwj xeeb, uas thaum xub thawj xav tias ntau tshaj qhov txaus.
Keeb Kwm IPv6
Kev Xav Tau thiab Kev Loj Hlob
Nrog kev loj hlob sai ntawm internet thiab cov khoom siv sib txuas, qhov kev txwv ntawm qhov chaw nyob IPv4 tau pib tshwm sim. Thaum xyoo 1990s lig, kev txhawj xeeb tau tshwm sim tias IPv4 yuav tsis txaus los ua kom tau raws li qhov xav tau chaw nyob IP thoob ntiaj teb. Qhov no ua rau muaj kev txhim kho ntawm IPv6, uas tau qhia hauv xyoo 1998 los ntawm Internet Engineering Task Force (IETF).
Cov Qauv Chaw Nyob IP
Cov chaw nyob IPv6 ntev li 128-bit, ntev dua li cov chaw nyob IPv4. Lawv muab faib ua yim pawg 16-bit sib cais los ntawm cov cim colons (:), piv txwv li 2001:0db8:85a3:0000:0000:8a2e:0370:7334. Qhov no tso cai rau IPv6 txhawb nqa txog li 340 undecillion (340 x 10^36) cov chaw nyob tshwj xeeb, kov yeej qhov kev txwv tseem ceeb ntawm IPv4.
Kev Sib Txawv ntawm IPv4 thiab IPv6
Chaw Nyob
Raws li tau hais lawm, qhov sib txawv tseem ceeb tshaj plaws yog qhov loj ntawm qhov chaw nyob. Cov chaw nyob IPv4 muaj 32 bits, ua rau muaj kwv yees li 4,3 billion chaw nyob, thaum cov chaw nyob IPv6 muaj 128 bits, muab cov chaw nyob tsis txwv.
Hom Chaw Nyob
– IPv4: Sau ua lej lej uas sib cais los ntawm cov dots (piv txwv li, 192.168.0.1).
– IPv6: Sau ua hexadecimal notation sib cais los ntawm colons (piv txwv li, 2001:0db8:85a3:0000:0000:8a2e:0370:7334).
Kev Teeb tsa thiab Kev Ua Haujlwm Tsis Siv Neeg
IPv6 yog tsim los nrog lub tshuab teeb tsa uas ua haujlwm tau zoo dua li IPv4. IPv6 siv Neighbor Discovery Protocol (NDP), uas suav nrog cov yam ntxwv xws li kev teeb tsa tus kheej thiab kev tshawb pom kev pabcuam. Nrog Stateless Address Autoconfiguration (SLAAC), cov khoom siv ntawm IPv6 network tuaj yeem tau txais cov chaw nyob IP yam tsis tas yuav muaj DHCP (Dynamic Host Configuration Protocol) server.
Keamanan
IPv6 tau tsim los nrog IPsec (Internet Protocol Security) ua ib qho tseem ceeb, muab kev txhawb nqa rau kev lees paub, kev ncaj ncees, thiab kev ceev ntiag tug. Txawm hais tias IPsec kuj tseem siv tau hauv IPv4, nws yog xaiv tau thiab tsis xav tau los ntawm lub neej ntawd. Yog li, IPv6 muab txoj hauv kev ruaj ntseg zoo sib xws thiab sib xws.
Kev Ua Tau Zoo thiab Kev Ua Haujlwm Zoo
IPv6 muaj kev ua haujlwm zoo dua ntawm lub network vim yog cov headers yooj yim dua. Qhov no txo qhov kev thauj khoom ntawm cov routers, ua kom cov txheej txheem pob ntawv sai dua. Ntxiv mus, kev sib cais hauv IPv6 yog tswj los ntawm lub cuab yeej xa, tsis yog lub router, ua rau kev ua haujlwm zoo dua.
Kev Txhawb Nqa Rau Txawb
IPv6 raug suav hais tias ua haujlwm tau zoo dua rau cov khoom siv mobile vim nws txhawb nqa Mobile IPv6 (MIPv6), ib qho protocol uas tso cai rau cov khoom siv txav mus los ntawm cov tes hauj lwm yam tsis poob kev sib txuas. Qhov no yog ib qho tseem ceeb uas muab qhov sib txawv ntawm Internet of Things (IoT) thiab kev loj hlob ntawm cov khoom siv mobile txuas nrog internet.
Cov txiaj ntsig ntawm IPv6 dhau IPv4
Ntxiv rau qhov yuav tsum tau ua kom yooj yim, muaj ntau qhov zoo ntxiv uas ua rau IPv6 zoo dua IPv4:
Kev nthuav dav
Raws li tau hais ua ntej lawm, lub peev xwm los txhawb ntau qhov chaw nyob tso cai rau IPv6 los pab txhawb kev loj hlob ntawm cov khoom siv sib txuas, los ntawm cov khoos phis tawj tus kheej mus rau IoT sensors.
Kev Pabcuam Zoo (QoS)
IPv6 tau txhim kho cov yam ntxwv zoo rau Kev Pabcuam Zoo (QoS). Los ntawm kev siv kev faib tawm tsheb thiab kev sau npe ntws, IPv6 tuaj yeem txheeb xyuas cov pob ntawv uas xav tau qhov tseem ceeb tshwj xeeb, xws li kev tshaj tawm video lossis VoIP.
Kev Sib Koom Tes thiab Kev Txuas Ntxiv
Lub taub hau IPv6 tau tsim los kom yooj ywm dua thiab nthuav dav dua, uas tso cai rau kev ntxiv thiab kev sib tshooj ntawm cov txheej txheem tshiab yam tsis tas yuav hloov pauv lub network tseem ceeb. Qhov no ua rau IPv6 hloov kho tau yooj yim dua rau kev hloov pauv thev naus laus zis yav tom ntej.
Kev Ua Haujlwm Zoo ntawm Kev Taw Qhia
IPv6 txhawb nqa kev sib sau ua ke ntawm cov header, uas txo cov nqi khiav ntawm ISP, txhim kho kev ua haujlwm ntawm kev tswj hwm txoj kev thiab txo cov khoom siv router.
Cov Teeb Meem Hauv Kev Hloov Pauv Los Ntawm IPv4 Mus Rau IPv6
Txawm hais tias IPv6 muaj ntau qhov zoo, kev hloov pauv tsis yog yam tsis muaj teeb meem:
Kev Sib Haum Xeeb
Muaj ntau lub cuab yeej thiab daim ntawv thov uas twb muaj lawm tsuas yog sib xws nrog IPv4 xwb. Kev ua kom ntseeg tau tias txhua lub cuab yeej network, software, thiab daim ntawv thov uas twb muaj lawm txhawb nqa IPv6 xav tau sijhawm thiab peev txheej ntau .
Nqi
Kev siv IPv6 yuav tsum tau hloov kho kho vajtse hauv network thiab hloov kho software, uas yuav kim heev. Tsis tas li ntawd, kev cob qhia cov neeg ua haujlwm IT kom nkag siab thiab tswj hwm IPv6 networks yog lwm qhov kev nqis peev tsim nyog.
Kev saws yuav
Cov txheej txheem thiab cov qauv uas twb muaj lawm, xws li DHCP, DNS, thiab firewalls, yuav tsum tau hloov kho tshiab kom txhawb nqa IPv6. Qhov no feem ntau xav tau kev koom tes thoob ntiaj teb thiab kev siv zog hauv kev lag luam.
Xaus
IPv4 thiab IPv6 yog lub hauv paus ntawm lub internet niaj hnub no. Txawm hais tias IPv4 tau pab peb cov kev xav tau zoo rau ntau xyoo, nws qhov chaw nyob txwv thiab qhov xav tau kev ruaj ntseg ntxiv, kev ua haujlwm zoo, thiab kev ywj pheej tau ua rau kev hloov mus rau IPv6 tseem ceeb heev. IPv6, nrog nws qhov chaw nyob loj dua, kev pabcuam zoo dua, thiab kev ua haujlwm zoo dua, muab cov kev daws teeb meem rau cov teeb meem niaj hnub no thiab ua rau kev loj hlob ntawm internet txuas ntxiv mus. Txawm li cas los xij, kev hloov pauv tag nrho yuav xav tau sijhawm thiab kev sib koom tes los ntawm ntau tog. Kev siv dual-stack (IPv4 thiab IPv6 khiav ib sab) yog ib qho kev daws teeb meem ib ntus, tab sis thaum kawg, IPv6 yuav yog lub hauv paus rau lub internet yav tom ntej.
