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Chapter 2
Installation
Figure 2-27 Installing a GigaStack GBIC Module in a Switch
Installing and Removing SFP Modules
These sections describe how to install and remove small-form-factor pluggable (SFP) modules.
SFP modules are inserted into SFP module slots on the front of the Catalyst 2950 LRE switches. These
field-replaceable modules provide the uplink interfaces.
You can use any combination of SFP modules. See the Catalyst 2950 LRE release notes for the list of
SFP modules that the Catalyst 2950 LRE switch supports. Each port must match the wave-length
specifications on the other end of the cable, and for reliable communications, the cable must not exceed
the stipulated cable length. Refer to
Use only Cisco SFP modules on the Catalyst 2950 LRE 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, refer to your SFP module
documentation.
Installing SFP Modules into SFP Module Slots
SFP modules use different types of latches for their installation and extraction. Determine which type of
latch your SFP module uses before following the installation procedure:
•
•
•
Caution
We strongly recommend that you do not install or remove the SFP module with fiber-optic cables
attached to it 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.
OL-6156-01
Metal flap door
1
GigaStack
GBIC module slot
GBIC module
Figure 2-28
shows an SFP module with a Mylar tab latch.
Figure 2-29
shows an SFP module with an actuator button latch.
Figure 2-30
shows an SFP module that has a bale-clasp latch.
C at al ys t 29
50
SE RIE S
2
Table 1-2
for cable stipulations for SFP module connections.
Catalyst 2950 Switch Hardware Installation Guide
Installing and Removing SFP Modules
2-23
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