Black Box Black Box High-Density Media Converter System II On any previous Management Modules

SNMP Write Lock

The SNMP Write Lock switch is located on the back of the 3-Slot Desktop Chassis. The SNMP Write Lock switch prevents a new management board from re-configuring the

application module settings (e.g., the status of	features
such as LinkLoss, FiberAlert, Force mode, etc.) made	via SNMP
on any previous Management Modules.

NOTE

Leave this switch in the NORMAL position during day-to-day operation; the LOCKED position should only be used when changing the SNMP management board.

The SNMP Management Module can be removed and replaced as necessary. Refer to the SNMP Management Module manual for complete instructions about how to configure and operate. If an SNMP Management Module is installed, refer to the LED panel below for indicators of Link, Temperature, Power Supply modules and other functions.

SNMP Management Module LEDs

The SNMP Management Module features several LEDs. The LED functions are:

LNK/ACT	Glows green when a link is established on port.
	Blinks green when data activity occurs.

FDX/COL

TEMP

PS

FAN A / FAN B

Glows yellow when port is in Full-Duplex mode. Blinks yellow when port is operating in Half- Duplex mode and collisions occur.

Glows yellow when temperature of unit surpasses a user-defined level.

Glows yellow when one power supply module malfunctions.

Glows yellow when a fan malfunctions.

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