3com 100 TX User Manual
4
C
ABLING
The LinkBuilder FMS 100-TX Hub supports Fast Ethernet cabling and topology
requirements, as detailed in the IEEE 802.3 specification. Fast Ethernet
preserves the 100-meter maximum UTP cable length from the hub to the
desktop that is a requirement for 10 Mbps Ethernet. Two 100 Mbps topology
rules are different from those for 10 Mbps Ethernet:
requirements, as detailed in the IEEE 802.3 specification. Fast Ethernet
preserves the 100-meter maximum UTP cable length from the hub to the
desktop that is a requirement for 10 Mbps Ethernet. Two 100 Mbps topology
rules are different from those for 10 Mbps Ethernet:
■
The maximum number of repeaters in a collision domain is two. (For additional
information, refer to the sections “Considerations for Multisegmented
Networks” and “Classification of Repeaters” in Chapter 3.)
information, refer to the sections “Considerations for Multisegmented
Networks” and “Classification of Repeaters” in Chapter 3.)
The LinkBuilder FMS 100-TX Hub only supports one repeater in a collision
domain.
domain.
■
In a single collision domain, the maximum network diameter is 200 meters
with Category 5 UTP cabling only, or 260.8 meters with one fiber-optic
cabling link. Refer to Table 4-1 for a summary of maximum cable lengths.
with Category 5 UTP cabling only, or 260.8 meters with one fiber-optic
cabling link. Refer to Table 4-1 for a summary of maximum cable lengths.
Table 4-1 Maximum Network Collision Domain Diameters
Model
Maximum Cable Length
Media
Hub to connected
workstations
workstations
100 meters
Straight-through UTP cable
One Class I repeater
200 meters
Straight-through UTP cable
260.8 meters
Combined UTP and fiber cable