- PC - Buzz - 1 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z *
- 1BASE-
- 5- 1 Mbps stjerneformet coax ethernet (StarLAN)
- 10BASE-
- 10 Mbps Ethernet, bus topologi
-
- 10BASE-2
- 1985 - "CheaperNet", "Thinnet"
10-Mbps baseband Ethernet specification using 50-ohm thin coaxial cable. 10Base2, which is
part of the IEEE 802.3 specification, has a distance limit of
606.8 feet (185 meters) per segment.
segments: max 5 cable segments (4 repeaters): max 925 (1000) m
nodes: max 30 pr. segment (29 with a repeater), min distance: 0.5 m
cable: 50 ohm thin coax ("ThinWire"), RG-58, max 185 (200) m
terminators: 50 ohm
connectors: BNC, T-connector
transceiver: internal - on ethernet controller
-
- 10BASE-5
- 1980
The original Ethernet standard as defined by DEC, Xerox, and Intel, which uses thick
yellow cable.
10-Mbps baseband Ethernet specification using standard
(thick) 50-ohm baseband coaxial cable. 10Base5, which is part of the IEEE
802.3 baseband physical layer specification, has a distance limit of 1640 feet (500
meters) per segment.
Max hosts: 1024.
segments: max 5 cable segments (4 repeaters): max 2500 m
nodes: max 100 nodes
cable: 50 ohm thick coax ("ThickWire"), RG-8 or RG-11 (Radio Grade),
yellow with black marks at 2.5 m intervals for transceivers, max 500 m (1640 ft)
Minimum reflection with lengths 23.4, 70.2, 117 m
terminators: 50 ohm, midway between two 2.5 m marks
transceivers: MAU (Media Access Unit), external -
tapped on cable with a clamp
interface: AUI = DIX
connector = transceiver cable + connectors
connectors: DB-15
transceiver cable: between transceiver and controller, 9 leads (not coax), max 50 m
(165 ft)
-
- 10BASE-T
- october 1990 - star topologi
IEEE 802.3 Physical layer specification for 10-Mbps Ethernet
over two pairs of Category 3, 4, or 5 UTP wire - one pair for
transmitting data and the other for receiving data.
10BaseT has a distance limit of approximately 328 feet (100 meters) per segment.
Max network length (with repeaters): 2500 m
cable: UTP, 22-26 AWG
- 24 AWG recommended (same cable is used in Token Ring), 4
strands, max 100 m between controller and hub (repeater)
connectors: RJ-45 (8 pins)
transceiver on ethernet controller
repeater hub: with Link Status Monitor - tests connection to controller -
only viable links are maintained
-
- 10BASE-F
- FiberOptic
10-Mbps baseband Ethernet specification that refers to the 10BaseFB, 10BaseFL, and
10BaseFP standards for Ethernet over fiber-optic cabling.
FL : Fiber Link - 10-Mbps baseband Ethernet specification using fiber-optic
cabling. 10BaseFL is part of the IEEE 10BaseF specification and, while able to
interoperate with FOIRL, is designed to replace the FOIRL
specification. 10BaseFL segments can be up to 3280 feet (1000 meters) long if used with
FOIRL, and up to 1.24 miles (2000 meters) if 10BaseFL is used exclusively.
FB : Fiber Backbone - 10-Mbps baseband Ethernet specification using
fiber-optic cabling. 10BaseFB is part of the IEEE 10BaseF specification. It is not used to
connect user stations, but instead provides a synchronous signaling backbone that allows
additional segments and repeaters to be connected to the network. 10BaseFB segments can be
up to 1.24 miles (2000 meters) long.
FP : Fiber Passive - 10-Mbps fiber-passive baseband Ethernet specification
using fiber-optic cabling. 10BaseFP is part of the IEEE 10BaseF specification. It
organizes a number of computers into a star topology without the use of repeaters.
10BaseFP segments can be up to 1640 feet (500 meters) long.
- 100BASE-
- 100 Mbps 'Fast' Ethernet (fysisk lag)
FX : Fiber optic -
- T : Twisted pair
- T4 : 4 par kategori 3-5 UTP - eller STP
TX : 2 par kategori 5 STP og UTP CDDI
- VG : Voice Grade - oprindeligt navn til 100VG-AnyLAN
A proposed 100-Mbps LAN topology over UTP as suggested by HP
X : old name for FX and TX
- 1000BASE-
- CX
- A gigabit Ethernet Standard for Short-haul copper "twinax."
- SX
- A gigabit Ethernet standard for HDX and FDX fiber @ 850nm wavelength.
- LX
- A gigabit Ethernet standard for HDX and FDX fiber @ 1300nm wavelength.
- 10Broad36
- Ethernet på bredbåndskabel, nominelt max 3600 m, i praksis max 1800 m
- 100VG-AnyLAN
- The IEEE specification for 100 Mbps Token Ring and Ethernet implementations over four
pair UTP. The Media Access Control (MAC) layer is not compatible with the 802.3 MAC layer.
UTP kategori 3
Udviklet af HP og AT&T, oprindeligt 100base-VG, Ethernet frames
Med IBM udvikledes også st›tte for Token Ring frames ("AnyLAN")
Adgangsmetode: "Demand Priority" (ikke CSMA/CD)
> fast ethernet IEEE
802.12
- 16450, 16550, 16650
- > UART
- 1-Meg
- CyberCity's ADSL-abonnement
- 1TR6
- a widely deployed, German- specific ISDN switch standard that
existed prior to the ETSI NET3
standard.
- 3Com
www.3com.com
knowledgebase.3com.com/: Teknisk support
- 4B/5B coding
- bit synkronisering i FDDI - udnytter 80% af båndbredden
- 8-1-N
- "8 databits - 1 stopbit - ingen paritesbit (none)" : normal seriel
kommunikation via COM port
- 8250
- > UART
- 8B/10B coding
- bit synkronisering i Ethernet, Gigabit - udnytter 80% af
båndbredden