Connecting To 1000Base-T Sfp Modules - Cisco 2431 - IAD Router Hardware Installation Manual

Connecting to SFP Modules
Observe the port status LED.
Step 4
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
solutions to cabling problems.
If necessary, reconfigure and restart the switch or target device.
Step 5

Connecting to 1000BASE-T SFP Modules

Follow these steps to connect a Category 5 cable to a 1000BASE-T SFP module (see
Figure 2-26
1
To prevent ESD damage, follow your normal board and component handling procedures.
Caution
When connecting to servers, workstations, and routers, insert a four twisted-pair, straight-through
Step 1
cable in the RJ-45 connector. When connecting to switches or repeaters, insert a four twisted-pair,
crossover cable.
When connecting to a 1000BASE-T device, be sure to use a four twisted-pair, Category 5 cable.
Note
You can use the mdix auto interface configuration command in the CLI to enable the automatic
Note
medium-dependent interface crossover (auto-MDIX) feature. When the auto-MDIX feature is enabled,
the switch detects the required cable type for copper Ethernet connections and configures the interfaces
accordingly. Therefore, you can use either a crossover or a straight-through cable for connections to a
copper 10/100 or 1000BASE-T SFP module port on the switch, regardless of the type of device on the
other end of the connection.
Insert the other cable end in an RJ-45 connector on a target device.
Step 2
Cisco ME 2400 Ethernet Access Switch Hardware Installation Guide
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Connecting to a 1000BASE-T SFP Module
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RJ-45 connector
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Chapter 2 Switch Installation
Chapter 3, "Troubleshooting,"
Figure
for
2-26):
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