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166 Extreme Networks Consolidated Hardware Guide

Alpine 3800 Series I/O Modules

Table 44 describes the optical specifications for the GM-4Si module.

LEDs

The GM-4Si module has the following LEDs:

• Module status

• Port status

For information about the LEDs and their activity on the GM-4Si module, see “I/O Module LEDs” on

page 176.

GM-WDMi Module

Figure 77 shows the GM-WDMi module.

Figure 77: GM-WDMi module

The GM-WDMi module has one 4 Gbps port, which supports four full-duplex Gigabit Ethernet

channels. The port transmits over a single mode fiber cable using wavelength division multiplexing.

The port uses an SC-APC simplex connector with a spring-loaded safety cover. APC connectors are

polished at an 8

angle to minimize loss and reflections over extended transmit distances.

The default configuration of the GM-WDMi module is as follows. The port:

• Is added to the default VLAN as untagged.

• Inherits the properties of the default VLAN (protocol type, VLANid, and so forth).

The GM-WDMi module transmits bi-directionally on the fiber cable and then multiplexes these

wavelengths over the single-mode optical fiber.

Table 44: GM-4Si module optical 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 -17 dBm

Optical input power maximum 0 dBm

Operating wavelength 830 nm 860 nm

38_GMWDM

Module status LEDs

Port status LEDs 4 Gbps port

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Extreme Networks WM-4T1i Spécifications Page 166