Installation guide

Evaluating and Meeting Mini-GBIC Requirements
Consolidated "e" Series Hardware Installation Guide 31
Evaluating and Meeting Mini-GBIC Requirements
All “e” series switches support the small form pluggable (SFP) GBIC, also known as the mini-GBIC. The
switches identify the type of mini-GBIC that is installed and verifies that the mini-GBIC is an Extreme
Networks-certified mini-GBIC.
Mini-GBIC Types and Specifications
There are three types of mini-GBIC interfaces:
• SX mini-GBIC, which conforms to the 1000BASE-SX standard
• LX mini-GBIC, which conforms to the 1000BASE-LX standard
• ZX mini-GBIC, which conforms to the IEEE 802.3z standard
Use only Extreme Networks-certified mini-GBICs, available from Extreme Networks, in the mini-GBIC
port in the switch or module. See Table 3 on page 30 for the media type and maximum distances that
support mini-GBICs.
Table 4 describes the specifications for the SX mini-GBIC interface, Table 5 describes the specifications
for the LX mini-GBIC interface, and Table 6 describes the specifications for the ZX mini-GBIC interface.
Total optical system budget for the SX mini-GBIC is 11.5 dB. Extreme Networks recommends that 3 dB
of the total budget be reserved for losses induced by cable splices/connectors and operating margin.
While 8.5 dB remains available for cable induced attenuation, the 1000BASE-SX standard specifies
supported distances of 275 meters over 62.5 micron multimode fiber and 550 meters over 50 micron
multimode fiber. There is no minimum attenuation or minimum cable length restriction.
Table 4: SX mini-GBIC specifications
Parameter Minimum Typical Maximum
Transceiver
Optical output power -9.5 dBm -4 dBm
Center wavelength 830 nm 850 nm 860 nm
Receiver
Optical input power sensitivity -21 dBm
Optical input power maximum -4 dBm
Operating wavelength 830 nm 860 nm
General
Total system budget 11.5 dB
Table 5: LX mini-GBIC specifications
Parameter Minimum Typical Maximum
Transceiver
Optical output power -9.5 dBm -3 dBm
Center wavelength 1275 nm 1310 nm 1355 nm