Extreme Networks Mini-GBIC Installation Note

Part Number : 100099-00 Rev 02 1

Mini-Gigabit Interface Connector
(Mini-GBIC) Installation Note

You can add and remove mini-GBICs from your Extreme Networks switch without powering
off the system. There are two types of mini-GBIC interfaces: the LX mini-GBIC, which conforms
to the 1000BASE-LX standard, and the SX mini-GBIC, which conforms to the 1000BASE-SX
standard. The mini-GBIC connector, which is shown in Figure 1, is the same for both types of
mini-GBIC interfa ces.

Figure 1: Mini-GBIC module

Mini-GBICs are a Class 1 laser device. Use only Extreme-approved devices.

Remove the LC fiber-optic connector fro m the mini-GBIC prior to removing the
mini-GBIC from the port.

Mini-GBICs can emit invisible laser radiation. Avoid direct eye exposure to beam.

If you see an amber blinking mini-GBI C port status LED on your Extreme Networ ks
switch or you receive an error message when you insta ll a non-Extreme-sup ported
mini-GBIC, you do not have an Extreme-suppor ted mini- GBIC installed i n your switch. To
correct this problem, make sure you insta ll an Extreme- suppor ted mini- GBIC into the por t
on the switch.

To remove the mini-GBIC connector, gently push in the plastic tab at the bottom of the
connector and pull the mini-GBIC out of the port on the switch.

To insert a mini-GBIC connector:

1 Holding the mini-GBIC by its sid es, insert the mini-GBIC into the po rt on the switch.
2 Slide the mini-GBIC into the port, unti l you hear it click.

XM_032

Mini-Gigabit Interface Connector (M ini-GBIC) In stallation Note 2

LX Mini-GBIC Specifications

Table 1 describes the specifications for the LX mini-GBIC interface.

Total optical system budget for the LX mini-GBIC is 13.5 dBm. Measure cable plant losses with
a 1310 nm light source and verify this to be wi thin budget. When calcula ting the maximum
distance attainable using op tical cable with a specified loss per kilo meter (for example 0.25
dB/km) Extreme Networks recommends that 3 dBm of the total budget be reserved for losses
induced by cable splices/connectors a nd operating margin. Thus, 10.5 dBm remains availa ble
for cable induced atten uation. There is no mini mum attenuation or minimum cable leng th
restriction.

SX Mini-GBIC Specifications

Table 2 describes the specifications for the SX mini-GBIC interface.

Total optical system budget for the SX mini-GBIC is 11.5 dBm. Extreme Networks recommends
that 3 dBm of the total budget be reserved for losses induced by cable splices/connectors and
operating margin. While 8.5 dBm remains available fo r cable induced attenuation, the
1000Base-SX stand ard specifies supported dista nces 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 lengt h restriction.

Table 1: LX Mini-GBIC Specific ations

Parameter Minimum Typical Maximum
Transceiver

Optical output power -9.5 dBm -3 dBm
Center wavelength 1275 nm 1310 nm 1355 nm

Receiver

Optical input power sensitivity -23 dBm
Optical input power maximum -3 dBm
Operating wavelength 1270 nm 1355 nm

General

Total system budget 13.5 dBm

Table 2: 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 dBm