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Catalyst 3750 Switch Hardware Installation Guide
OL-6336-10
Chapter 2 Switch Installation
Connecting to an SFP Module
Connecting to 1000BASE-T SFP Modules
Follow these steps to connect a Category 5 cable to a 1000BASE-T SFP module port (see Figure 2-57):
Caution To prevent ESD damage, follow your normal board and component handling procedures.
Step 1 When you connect the switch to servers, workstations, and routers, insert a four twisted-pair,
straight-through cable in the RJ-45 connector. When you connect the switch to other switches or
repeaters, insert a four twisted-pair, crossover cable.
Note When you connect the switch to a 1000BASE-T device, be sure to use a four twisted-pair, Category 5 or
higher cable.
Figure 2-57 Connecting to an SFP Module Port
Step 2
Insert the other cable end in an RJ-45 connector on a target device.
Step 3 Observe the port status LED.
• The LED turns green when the switch and the target device have an established link.
• The LED turns amber while the STP discovers the network topology and searches for loops. This
process takes about 30 seconds, and then the port LED turns green.
• If the LED is off, the target device might not be turned on, there might be a cable problem, or there
might be problem with the adapter installed in the target device. See Chapter 3, “Troubleshooting,”
for solutions to cabling problems.
Step 4 If necessary, reconfigure and restart the switch or target device.
1 RJ-45 connector
Catalyst 3750
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