5.6 Module 6 -- Ethernet Fundamentals
5.6 Module 6 -- Ethernet Fundamentals
Ethernet (Wikipedia:
Ethernet
)
ALOHANET (Wikipedia:
ALOHANET
)
Bob Metcalfe (Wikipedia:
Bob_Metcalfe
)
Network throughput
CSMA/CD (Wikipedia:
Carrier_sense_multiple_access_with_collision_detection
)
Truncated binary exponential backoff (Wikipedia:
Truncated_binary_exponential_backoff
)
DIX "Digital/Intel/Xerox"
"experimental Ethernet" 3 Mbit/s & 8-bit destination and source address
Ethernet names/technology
10Base-5 -- 500 meter max, 50 Ohm coax, & AUI vampire taps (Wikipedia:
Vampire_tap
)
10Base-2 -- 185 meter max, 50 Ohm coax. Cheapernet (Wikipedia:
10Base-2
)
10Base-T -- 100-150 meter max, (Wikipedia:
10BASE-T
)
Fast Ethernet (9 versions) -- (Wikipedia:
Fast_Ethernet
)
100Base-T, 100BASE-FX (400m/2km laser), 100BASE-FX (400m/2km, multi-mode laser), 100BASE-SX (300m, multi-mode LED), 100BASE-BX10 (10km, one single-mode fiber), & 100Base-VG (Wikipedia:
100BaseVG
).
Gigabit Ethernet (12 types) (Wikipedia:
Gigabit_Ethernet
)
1000Base-T, 1000Base-FX, 1000BASE-SX (550m, multi-mode LED?) 1000BASE-LH (up to 100km), 1000BASE-BX10, (10km, one single-mode fiber).
10 gigabit Ethernet (10 types) (Wikipedia:
10_gigabit_Ethernet
)
10GBASE-CX4 (15 meters, copper), 10GBASE-SR (26 meters to 82 meters, single mode), 10GBASE-ZR (80km)
100GbE or 100 Gigabit Ethernet (0 types, study group only) (Wikipedia:
100_gigabit_Ethernet
)
MAC Addresses (Wikipedia:
Mac_address
)
universally administered addresses
locally administered addresses
Baseband (Wikipedia:
baseband
)
Ethernet layer 1 and 2 in the OSI model (Wikipedia:
OSI_Model
)
Ethernet frame structure
Tone burst 7 Bytes
sync symbol (SFD -- Start Frame Delimiter) 1 Byte
from address 6 Bytes
to address 6 Bytes
length/type 2 Bytes
Data or padding
FCS Frame Check Sequence
Clock recovery & coding (100Mbit IEEE 802.3-2005, 4B/5B Table 24-1, NRZI Fig. 24-6, MLT-3 ??) (GigaBit, IEEE 802.3-2005, Idle symbols & 5 level code 40.1.3, common clock, Side stream scrambler 40.3.1.3.1, Bit-to-symbol mapping Table 40-1 & 40-2.) (GigaBit Fiber uses 8B/10B coding IEEE 802.3-2005 34.1.2)
Ethernet timing, interframe spacing
Ethernet errors - FCS, length,
Ethernet collisions, collision domains
Auto-negotiation speed/duplex (Wikipedia:
Autonegotiation
)
-- Fast Link Pulse, 16 bits
Switches -- store and forward vs. cut through
Instructor: Louis Taber,
louis.taber.at.pima at gmail dot com
(520) 206-6850
My web
site
in
Cleveland
,
OH
The
Pima Community College
web site
5.6 Module 6 -- Ethernet Fundamentals
