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100BaseTX Expansion Module Cables
The 100BaseTX module's network port is an RJ-45 connector that uses 100BaseTX cable.
Note
place of the other may cause system performance problems. 10BaseT is a Category 3 cable, and
100BaseTX is a Category 5 cable (physically, Category 5 cable is usually a little heavier or stiffer
than category 3 cable). Check to see if the cable type is printed on the cable jacket.
The 100BaseTX module's network port is an RJ-45, 100BaseTX type that is always in MDI-X
mode. Cabling the 100BaseTX to different types of equipment that have MDI or MDI-X ports
requires different types of 100BaseTX cable. The cable types are described below.
•
Straight-through cable: If the 100BaseTX is cabled to a port that is MDI, such as a server, use a
straight-through connecting cable.
•
Crossover cable: If the 100BaseTX is cabled to a port that is also MDI-X, such as a high-speed
hub, use a crossover cable.
As a reference for 100BaseTX cable, use the 10BaseT cable information in "Appendix A" in the
Catalyst Stack Installation and Configuration Guide.
Connecting Cables to 100 BaseTX Expansion Module Ports
Connect cables to the RJ-45 port on the front of the 100BaseTX module as follows:
Step 1
Step 2
Step 3
Step 4
100BaseTX and 10BaseT cable have the same connectors and cable pinouts, but using one in
Determine if the unit is operating in half-duplex or full-duplex mode. If the Catalyst switch
is an enhanced version, see the section "Configuring Full-Duplex Communications" in the
Catalyst Stack Installation and Configuration Guide for a detailed explanation on how to
determine whether the communication mode is half- or full-duplex. The Catalyst switch
and the 100BaseTX operate in half-duplex mode only for unenhanced Catalyst switch
units. Set the DUPLEX switch on the front of the module to the appropriate position: down
for half-duplex, or up for full-duplex. Set to half-duplex only for unenhanced Catalyst
switch units.
Determine that you have the correct cable. Refer to "Appendix A" in the Catalyst Stack
Installation and Configuration Guide for a description of 100BaseTX cables.
Connect a 100BaseTX cable from a hub or end-node device to the RJ-45 jack on the front
of the expansion module.
Insert the cable's 8-pin (RJ-45) plug into the jack until it clicks into place (see Figure 5).
Catalyst Matrix and Expansion Module Installation and Configuration Guide
Installing Catalyst Switch Front Expansion Modules
7
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