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Catalyst 3750 Switch Hardware Installation Guide
OL-6336-07
Chapter 2 Switch Installation
Installing and Removing SFP Modules
Installing and Removing SFP Modules
These sections describe how to install and remove SFP modules. SFP modules are inserted into
SFP module slots on the front of the Catalyst 3750 switches. These field-replaceable modules provide
uplink interfaces.
You can use any combination of SFP modules. See the Catalyst 3750 release notes for the list of
SFP modules that the Catalyst 3750 switch supports. Each port must match the wave-length
specifications on the other end of the cable, and the cable must not exceed the stipulated cable length for
reliable communications. See the “Installation Guidelines” section on page 2-5 for cable stipulations for
SFP connections.
Use only Cisco SFP modules on the Catalyst 3750 switch. Each SFP module has an internal serial
EEPROM that is encoded with security information. This encoding provides a way for Cisco to identify
and validate that the SFP module meets the requirements for the switch.
For detailed instructions on installing, removing, and cabling the SFP module, see your SFP module
documentation.
Installing SFP Modules into SFP Module Slots
Figure 2-47 shows an SFP module that has a bale-clasp latch.
Caution We strongly recommend that you do not install or remove fiber-optic SFP modules with cables attached
because of the potential damage to the cables, the cable connector, or the optical interfaces in the
SFP module. Disconnect all cables before removing or installing an SFP module.
Removing and installing an SFP module can shorten its useful life. Do not remove and insert
SFP modules more often than is absolutely necessary.
Figure 2-47 SFP Module with a Bale-Clasp Latch
To insert an SFP module into the SFP module slot, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on the chassis.
Step 2 Find the send (TX) and receive (RX) markings that identify the top side of the SFP module.
Note On some SFP modules, the send and receive (TX and RX) markings might be replaced by arrows
that show the direction of the connection, either send or receive (TX or RX).
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