Types of Optical SFP Interfaces
Extreme Networks Pluggable Interface Modules Installation Guide
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When in SMF operation, 100FX-SMF or 1000LX, measure cable plant losses with a 1310 nm light source
and verify this to be within budget. When you calculate the maximum distance attainable using optical
cable with a specified loss per kilometer (for example 0.25 dB/km), Extreme Networks recommends
that 3 dB of the total budget be reserved for losses induced by cable splices or connectors and operating
margin.
NOTE
The 100FX/1000LX SFP module detects link status based only on the presence of light in the receive cable.
Therefore, if a single strand is broken, the link partner on the other port will not detect link down.
LX100 SFP Module
The LX100 SFP module provides a 1-gigabit optical link up to 100 km long using LC connectors and
SMF cable.
The LX-100 SFP modules are supported on the following Extreme Networks switches:
● BlackDiamond 10808
● BlackDiamond 8800 series
● BlackDiamond 12800 series
● Summit X150 series
● Summit X250e series
● Summit X450 series
● Summit X450a series
● Summit X450e series
100BASE-LX10 SFP Module
The 100BASE-LX10 SFP module provides a 100-Mbps optical connection using LC connectors and SMF
cable. The maximum transmission distance for this connection is 10 km.
The LX10 SFP module is supported in the Summit X250e-24x switch in all ports.
100BASE-BX Bi-Directional SFP Modules
The 100BASE-BX SFP modules include the 100BASE-BX-U SFP module and the 100BASE-BX-D SFP
module. These two SFP module are used together in a Summit family switch to permit a bidirectional
100-Mbps Ethernet connection using a single strand of SMF cable and LC connectors. The
100BASE-BX-U SFP module is always connected to the 100BASE-BX-D SFP module. The 100BASE-BX-D
SFP operates at wavelengths of 1550-nm TX/1310-nm RX wavelength), and the 1000BASE-BX-U SFP
operates at wavelengths of 1310 nm TX/1550 nm RX. The maximum transmission distance for this
connection is 10 km. The 100BASE-BX SFP modules conform to the IEEE 802.3ae standard.
The 100BASE-BX SFP modules are supported the Summit X250e-24x switch in all ports.
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