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Cisco ASR 901 Series Aggregation Services Router Hardware Installation Guide
OL-23778-01
Chapter 3 Installing the Cisco ASR 901 Mobile Wireless Router
Installing and Removing SFP Modules
Installing and Removing SFP Modules
This section describes how to install and remove SFP modules. The modules are inserted into the
SFP
module slots on the front of the Cisco ASR 901 router. These field-replaceable modules provide
interfaces.
See the Release Notes for Cisco ASR 901 Series Aggregation Services Router for the list of supported
SFP
modules. Each port must match the wavelength specifications on the other end of the cable. For
reliable communications, the cable must not exceed 328 feet (100 meters).
For detailed instructions on installing, removing, and cabling the SFP module, see the SFP module
documentation.
Installing SFP Modules
Figure 3-7 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 3-7 SFP Module with a Bale-Clasp Latch
Complete the following steps to insert an SFP module into the module slot:
Step 1 Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on the chassis.
Some SFP modules identify the top side of the module with transmit (TX) and receive (RX) markings
or arrows that show the direction of the connection.
Step 2 If the SFP module that you are using has the markings, use them to identify the top side of the module.
Step 3 Align the SFP module in front of the slot opening.
Step 4 Insert the SFP module into the slot until you feel the connector on the module snap into place in the rear
of the slot (see Figure 3-8).
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