Table of Contents
Advertisement
HiSpeed Switch Troubleshooting GUide
Physical Media Specifications
10BASE-5
(Thick Coaxial cable)
1024
Max. stations per
segment
500 meters
Max. segment
length
DB15 AUI
Connector type
RG-11
Cable type
Common Ethernet Errors
collisions
late collisions
excessive collisions
undersized frames/
runts
9-2
10BASE-TX
10BASE-2
(Unshielded Twisted
(Thin Coaxial cable)
Pair-UTP)
1024
1024
185 meters
100 meters
BNC
STAR
RG-58
Cat 3 or 5
Occurs when more than one device is transmitting
simultaneously. Collisions are considered to be 'normal'
in an Ethernet environment. CSMD/CD is designed to
detect and correct for this.
A collision detected after 64 bytes have been
transmitted. May indicate a malfunctioning NIC/cable, or
a network segment that has exceeded the maximum
length.
The maximum number (16) of consecutive collisions
allowed between endstations contending for the wire.
Possibly caused by exceeding the maximum number of
users on a given segment, length of cable, or jabbering
NIC.
Frames smaller than the minimum Ethernet frame size of
64 bytes a.k.a. 'runts'. Presumed to be a fragment
resulting from a collision.
Draft Level—Hitachi Confidential
10BASE-FX
(Fiber Optical Link)
1024
200 meters
STAR
62.5/125 mm
or 9/125 sm
Doc Part Number, Version Number
Advertisement
Table of Contents
Troubleshooting
