Qhov txawv ntawm Fast Ethernet thiab Gigabit Ethernet

2024 Tus sau: Alex Aldridge | [email protected]. Kawg hloov kho: 2024-01-17 23:34

Ceev Ethernet vs Gigabit Ethernet | Cov qauv, Lub cev Media Specifications, Ceev thiab Kev Ua Haujlwm

Ethernet yog dab tsi?

Ethernet hauv computer networks yog hais txog kev sau cov qauv thiab cov khoom sib txuas, uas muab cov xov xwm sib txuas lus hauv Local Area Network (LAN), nruab nrab ntawm cov khoom siv network. Muaj ntau yam qauv tsim nyob rau hauv lub xyoo dhau los, IEEE tuaj nrog "IEEE 802.3 - Ethernet txuj" nyob rau hauv IEEE 802 raws tu qauv suite. Thawj Ethernet tus qauv IEEE 802.3 txhawb cov ntaub ntawv tus nqi ntawm 10 megabits ib ob (Mbps).

Nrog kev txhim kho thev naus laus zis, 10Mbps ceev hauv LAN tsis txaus. IEEE tau txhim kho Ethernet rau IEEE 802.3u "Fast Ethernet" tus qauv, thiab tom qab ntawd lawv tuaj nrog IEEE 802.3z "Gigabit Ethernet" tus qauv.

Ethernet ceev yog dab tsi?

Ceev Ethernet yog kev txhim kho Ethernet, uas muab 100Mbps ceev. Kev txhim kho nrawm dua Ethernet yog ua tiav los ntawm kev txo lub sijhawm me ntsis (lub sijhawm coj mus rau kis ib qho me ntsis) rau 0.01 microseconds. IEEE siv 100BASE-Tx/Rx; Raws li ib txwm muaj, "100" sawv rau 100Mbps ceev thiab "Base" sawv cev rau Baseband cov cim. Hauv qab no qhia tau hais tias lub cev tshaj tawm specifications.

Standard

Lub cev nruab nrab 100Base-T4 Twisted khub cable - qeb 3 UTP - qhov siab tshaj plaws ntu ntev 100m 100Base-TX Twisted khub cable - qeb 5 UTP lossis STP - ntu ntev tshaj plaws 100m Full duplex ntawm 100Mbps 100Base-FX Fiber optic cable - qhov siab tshaj plaws ntu ntev 2000m Full duplex ntawm 100Mbps

100Base-T4 tuaj yeem siv plaub qhov sib txawv sib txawv ntawm pawg 3 UTP (Unshielded Twisted Pairs) cables; peb khub hauv ob qho kev qhia nrog ib khub rau CS / CD. Nws siv 25MHz teeb liab nrog 8B / 6T encoding. Inter thav duab lub sij hawm sib txawv yog txo mus rau 960 nanoseconds los ntawm 9.6 microseconds hauv Ethernet. Qhov kev ncua deb tshaj plaws ntawm ob qhov chaw nres tsheb yog 200m nrog hub txuas nrog hauv nruab nrab.

100Base-TX siv ob khub ntawm twisted khub cables; ib khub rau kev sib kis, thiab lwm qhov rau kev txais tos.

100Base-FX yog rau Fiber optical nruab nrab; muaj ob lub cables rau kis tau tus mob thiab txais tos. Nws siv FDDI (Fiber Distributed Data Interface) thev naus laus zis los hloov 4B / 5B rau NRZI code pab pawg ntws mus rau hauv cov teeb liab kho qhov muag ntawm 125MHz moos zaus.

Gigabit Ethernet yog dab tsi?

Nrog kev txhim kho ntau ntxiv rau Ethernet thiab nrawm Ethernet, IEEE tshaj tawm IEEE 802.3z - Gigabit Ethernet thaum Lub Ob Hlis 1997. Txawm hais tias Gigabit Ethernet siv tib CSMA / CD thiab Ethernet framing hom, nws qhia qhov sib txawv tseem ceeb xws li lub sijhawm qhib. Raws li nws lub npe qhia, Gigabit Ethernet muab 1000Mbps kis tau tus mob nyob rau hauv tag nrho-duplex thiab ib nrab-duplex. Cov kev qhia tshwj xeeb ntawm lub cev muaj nyob hauv qab no.

Standard	Lub cev nruab nrab
1000Base-SX	Fiber optics- qhov siab tshaj plaws ntu ntev 550m, luv wavelength
1000Base-LX	Fiber optics- qhov siab tshaj plaws ntu ntev 5000m, Ntev wavelength
1000Base-CX	2 khub ntawm STP- qhov siab tshaj plaws ntu ntev 25m
1000Base-T	4 khub ntawm UTP - ntu ntev tshaj 100m

1000Base-SX txhawb nqa duplex txuas mus txog 275 meters, siv 850nm laser wavelength nrog fiber ntau channel technology. Qhov no tuaj yeem siv rau hauv multimode fiber ntau nrog 8B / 10B encoding hauv 1.25Gbps kab.

1000Base-LX tsuas yog qhov sib txawv ntawm qhov ntev wavelength ntawm 1300nm thiab siab dua.

1000Base-CX thiab 1000Base-T siv tooj liab cabling thiab nrug ntawm 25m mus rau 100m raws li.

Qhov txawv ntawm Fast Ethernet thiab Gigabit Ethernet yog dab tsi?

• Ceev ceev ntawm Ethernet yog 100Mbps, whereas nws yog 1000Mbps hauv Gigabit Ethernet.

• Kev ua tau zoo dua thiab txo qis cov fwj yuav tsum tau vim muaj bandwidth siab dua hauv Gigabit Ethernet dua Fast Ethernet.

• Hloov kho los ntawm Ethernet mus rau Fast Ethernet yog ib qho yooj yim thiab pheej yig dua li kev hloov kho Fast Ethernet rau Gigabit Ethernet.

• Xav tau cov khoom siv hauv network tshwj xeeb, uas tuaj yeem txhawb nqa 1000Mbps cov ntaub ntawv tus nqi, hauv Gigabit Ethernet.

• Cov cuab yeej txuas nrog Gigabit Ethernet xav tau kev teeb tsa ntawm phau ntawv mus txog qee qhov, qhov feem ntau ntawm cov khoom siv txuas nrog Fast Ethernet teeb tsa tau txais lawv tus kheej - sib tham qhov zoo tshaj plaws ceev thiab duplexity.