Cisco Catalyst 4500 E Supervisor Engine 6-E Series Installation And Configuration Note page 24

SFP Guidelines
Reinstall the socket cover if you are not installing an X2 transceiver in the empty socket.
Step 4
a.
b.
X2 Transceiver Maintenance Guidelines
To properly maintain X2 transceivers, follow these guidelines:
•
•
•
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
The Supervisor Engine 6-E has two X2 ports that can support Cisco TwinGig modules providing two
SFP connections to other network devices. A total of four SFPs is possible.
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.
For supported SFP transceiver media types, refer to:
http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL_
6982.html
http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL6
32702.html
http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL_
6981.html
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. See the Catalyst 4000 Family Module
Installation Guide for more information.
Installation and Configuration Note for the Catalyst 4500 E-Series Supervisor Engine 6-E
24
Position the socket cover in front of the socket opening.
Snap the socket cover in place.
To prevent ESD damage, follow normal handling procedures.
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.
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