3com 5500-EI User Manual

Page of 152
SFP Operation
47
SFP Operation
The following sections describes how to select and use an SFP transceiver 
in an SFP port.
Approved 
1000BASE-X SFP 
Transceivers
The approved Gigabit Ethernet SFP transceivers include:
3CSFP91 SFP (1000BASE-SX)
3CSFP92 SFP (1000BASE-LX)
3CSFP93 SFP (1000BASE-T)
3CSFP97 SFP (1000BASE-LH70)
3Com may approve additional SFP transceivers following the publication 
of this document. The latest list of approved SFP transceivers for the 
Switch 5500 Family is available on the 3Com Web site, at:
http://www.3com.com
You must match SFP transceivers with the correct cable type as follows:
1000BASE-SX SFP transceiver
Use this transceiver to connect Gigabit Ethernet SFP ports on the 
switch directly to a multimode fiber-optic cable.
1000BASE-LX SFP transceiver
Use this transceiver to connect Gigabit Ethernet SFP ports on the 
switch directly to a single-mode fiber-optic cable or to a multimode 
fiber using a conditional launch cable.
1000BASE-LH70 SFP transceiver
Use this transceiver to connect Gigabit Ethernet SFP ports on the 
switch directly to a single-mode fiber-optic cable.
1000BASE-T SFP transceiver
This transceiver uses Category 5 copper cabling with RJ-45 connectors 
and supports segment lengths of up to 100 m (328 ft).
If the SFP transceiver is faulty, it will not operate within the switch. See 
“Solving Hardware Problems” on page 83.
3Com recommends that you only use Gigabit Ethernet SFPs supplied by 
3Com. If the SFP transceiver is invalid it will not be recognized by the 
switch. 
10014925-AD_S5500_GSG.book  Page 47  Thursday, August 16, 2007  12:29 PM