Long Range Gbic System Budgets - Extreme Networks Alpine 3804 Hardware Manual

— 1000BASE-LX
— ZX GBIC
— ZX Rev 03
— LX70
— UTP GBIC
To ensure correct operation of the LX100 GBIC, make sure that you run ExtremeWare 6.1.9 or later on
your switch.
Table 13: UTP GBIC specifications
Media Type
Category 5 UTP cable
Requirements for the UTP GBIC
The UTP GBIC operates in full-duplex mode only. The UTP GBIC does not operate in 10/100 Mbps
mode, and it does not support autonegotiation of link speed.
You need to disable autonegotiation on the ports that use the UTP GBIC and manually configure the
port speed to 1000 Mbps.
The following example disables autonegotiation, configures a port speed of 1000 Mbps, and specifies
full-duplex mode for port 4 on a stand-alone switch:
config ports 4 auto off speed 1000 duplex full
The following example disables autonegotiation, configures a port speed of 1000 Mbps, and specifies
full-duplex mode for port 1 on a G8Xi module located in slot 1 of a modular switch:
config ports 1:1 auto off speed 1000 duplex full
The UTP GBIC is supported on "i" series products only.

Long Range GBIC System Budgets

Measure cable plant losses with a 1550 nm light source and verify this to be within budget. When
calculating 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, connectors, and operating margin. Figure 2 shows the total optical
system budget between long range GBICs.
NOTE
The fiber loss budget plus all other penalties must not exceed the total optical system budget.
Extreme Networks Consolidated Hardware Guide
Bit Error Rate Data
(Errors per Second) Rate
10 -12 1 Gbps 2
GBIC Type and Hardware/Software Support
Min Distance Max Distance
(Meters) (Meters)
80
35