Sfp Installation Considerations And Guidelines - Cisco Catalyst IE9300 Hardware Installation Manual

SFP Installation Considerations and Guidelines

SFP modules are inserted into SFP module slots on the front of the switch. Field-replaceable SFP modules
provide the uplink interfaces, send (TX) and receive (RX).
You can use any combination of rugged SFP modules. Each SFP module must be of the same type as the SFP
module on the other end of the cable, and the cable must not exceed the stipulated cable length for reliable
communications.
SFP Installation Considerations and Guidelines
Observe the following guidelines when installing SFP modules in the switch.
General Guidelines
Removing and installing an SFP module can shorten its useful life. Do not remove and insert any module
more often than absolutely necessary.
Caution
Caution
Power Guidelines
The uplink SFP slots support up to 4 W of total SFP power. Most SFP modules draw 1 W or less and allow
use of all four SFP uplinks. When installing higher power modules, ensure that the total rated power draw
remains below 4 W. When installing modules that draw higher than 1 W, leave at least one empty slot between
them.
Caution
Temperature Considerations
Some SFP modules are not rated to work at very low temperatures.
Caution
Cisco Catalyst IE9300 Rugged Series Switch Hardware Installation Guide
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To prevent electrostatic-discharge (ESD) damage, follow standard board and component handling
procedures.
Do not install or remove the SFP module with fiber-optic cables attached. Doing so could result in
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.
The following requirement applies only to installations in a hazardous location where an explosive
atmosphere may be present.
Do not insert and remove SFP modules while power is on; an electrical arc can occur. This could cause
an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous
before proceeding. Statement 1087
Depending on the SFP module you use, the operating temperature limits may be affected. Choose an
SFP module appropriate to the installed environment. For a complete list of supported SFP modules,
see the Cisco Catalyst IE9300 Rugged Series Data Sheet on Cisco.com.
Switch Installation