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Chapter 6
Cabling the Cisco RFGW-10 UEQAM
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Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into
Warning
beams or view directly with optical instruments. Statement 1051
SFP Guidelines
SFP modules are hot-pluggable and field-replaceable, and you can insert them into the four SFP module
slots on the front panel of the Supervisor Engine V-10GE. You can use the SFP modules for connections
to other network devices.
You can use any combination of supported SFP modules. Use only Cisco SFP modules on your Cisco
device. 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 device.
The following SFP media types are supported:
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Cisco 1000BASE-LX/LH interfaces fully comply with the IEEE 802.3z 1000BASE-LX standard.
However, their higher optical quality allows them to reach 10 km over SMF cable instead of the 5 km
specified in the standard.
If an LX/LH SFP designed for operation on an SMF cable is directly coupled to an MMF cable, an effect
known as Differential Mode Delay (DMD) might occur.
This section describes the following topics:
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Fiber-Optic SFP Modules
Some fiber-optic SFP modules use LC-type connectors, as shown in
Caution
Protect your fiber-optic SFP modules by inserting clean dust plugs into the SFP modules after you
remove the cables. Be sure to clean the optic surfaces of the fiber-optic cables with a soft antistatic cloth
before you reconnect them to another SFP module. Avoid getting dust and other contaminants into the
optical bores, as the optics do not work correctly when obstructed with dust.
OL-16264-04
When the transceiver is stored or when a fiber-optic cable is not plugged in, always keep plugs in
the optical bores.
The most common source of contaminants in the optical bores is debris picked up on the ferrules of
the optical connectors. Use an alcohol swab or Kim-Wipe to clean the ferrules of the optical
connector.
1000BASE-SX (GLC-SX-MM)
1000BASE-LX/LH (GLC-LH-SM)
1000BASE-ZX (GLC-ZX-SM)
1000BASE-T (GLC-T)
Fiber-Optic SFP Modules, page 6-25
1000BASE-T SFP Modules, page 6-27
CWDM SFP Modules, page 6-27
Figure
Cisco RF Gateway 10 Hardware Installation Guide
Cabling the Supervisor Engine
6-20.
6-25
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