| This page summarizes some of
the parameters that were standardized for the IEEE 802 LAN series. This
page includes parameters such as transmission media, signaling techniques,
LAN topologies, length of LAN cable runs and the permissable number of
LAN connections for each listed LAN type. Also included are the frame formats
and some links to other sites.
IEEE 802.3 CSMA/CD (Ethernet)
|
IEEE 802.3 10-Mbps Physical Layer Medium
Alternatives
|
|
Parameter
|
10Base5
|
10Base2
|
10Base-T
|
10Broad36
|
10Base-FP
|
|
Transmission Medium
|
50 Ohm Coax
|
50 Ohm Coax
|
UTP
|
75 Ohm Coax
|
850 nM Fiber
|
|
Signaling Technique
|
Manchester
|
Manchester
|
Manchester
|
DPSK
|
Manchester/ on-off
|
|
Topology
|
Bus
|
Bus
|
Star
|
Bus/tree
|
Star
|
|
Max Segment Length (m)
|
500
|
180
|
100
|
1800
|
500
|
|
Nodes per Segment
|
100
|
30
|
N/A
|
N/A
|
33
|
|
Cable Diameter (mm)
|
10
|
5
|
0.4~0.6
|
0.4~1.0
|
62.5/125 um
|
IEEE 802.3 Frame Format
IEEE 802.4 Token Bus
| IEEE 802.4 Physical
Layer Medium Alternatives |
| Parameter |
Phase-Continuous
Carrier Band |
Phase-Coherent
Carrier Band |
Broadband |
Optical Fiber |
| Data Rate (Mbps) |
1.0 |
5.0 |
10.0 |
1.0 |
5.0 |
10.0 |
1.0, 10.0, 20.0 |
| Center freq. |
5.0 Mhz |
7.50 Mhz |
15 Mhz |
N/A |
N/A |
N/A |
270 nm |
| Modulation |
Manchester/
phase continous
FSK |
Phase Coherent FSK |
Multilevel duobinary AM/PSK |
On-off |
| Topology |
Omnidirectional
Bus |
Omnidirectional Bus |
Directional Bus (tree) |
Active or
passive star |
Transmission
medium |
75 Ohm Coax. |
75 Ohm Coax. |
75 Ohm Coax. |
Optical Fiber |
| Scrambling |
No |
No |
Yes |
No |
IEEE 802.4 Frame Format
IEEE 802.5 Token Ring
| IEEE 802.5 Physical
Layer Medium Specifications |
|
Transmission Medium |
|
Shielded Twisted Pair |
Unshielded Twisted Pair |
| Data Rate (Mbps) |
4 or 16 |
4r |
| Max # of repeaters |
250 |
72 |
Max Length
between repeaters |
Not Specified |
Not Specified |
IEEE 802.5 Frame Format
Links to other pages:
Charles
Spurgeon's Ethernet (IEEE 802.3) Website
IEEE
802.3 Quick Primer
This page created by Suk Lee
10/25/97
|
