Network Topologies for Class II Hubs
1-10 Product Description
Network Topologies for Class II Hubs
This section illustrates recommended network topologies for Class II hubs. You should
use these topologies when configuring your network with 100BASE-FX or 100BufFX
Fast Ethernet cards. These 100Mb/s Fast Ethernet Modular Media Interface MM-100
cards can be used in the fast ethernet hub. The100BufFX fast ethernet card is an option
that uses full-duplex 100BASE-FX technology to extend the cabling distance to 2
kilometers.
Figure 1-4 shows a single Class II hub configuration with a switch (1) connected to a
DIGITAL MultiSwitch Fast Ethernet Hub 924TX module (2). This connection is made
using 100Mb/s Fast Ethernet MM-100 Cards. The combinations for connecting these
cards are as follows:
The100BASE-TX port can connect to another100BASE-TX port on a switch at a
distance of up to 100 meters.
Figure 1-4:
Single Class II Hub Configuration
100BASE-FX
FX
Connects to another 100BASE-FX port at a distance of up to 111
meters in half-duplex mode
100BufFX
B
Connects to a full-duplex 100BASE-FX port on a switch at a
distance of up to 2 kilometers in full-duplex mode
NPB-1062-98F
Fast Ethernet
MultiSwitch Fast Ethernet Hub 924TX
FX
B
2 Km
FX
FX
1
2
111
m
100 m
100 m
100 m
TX
100 m
