Operation Diagnosis
222
9.3
Out-of-band Signaling
UM Basic Configuration L3P
Release
7.1
12/2011
9.3.4 Monitoring the Fan
Devices in the Mach 4000 family have a replaceable plug-in fan unit. This
plug-in fan helps considerably in reducing the internal temperature of the
device.
Fans are subject to natural wear. The failure of one or more fans in the plug-
in fan can have a negative effect on the operation and life span of the device,
or can lead to a total failure of the device.
The device enables you
to signal changes to the status of the plug-in fan out-of-band (outside the
data flow) via a signal contact (see on page 219 “Monitoring the Device
Status via the Signal Contact”)
to signal changes to the status of the plug-in fan by sending a trap when
the device status changes
to detect status changes to the plug-in fan in the Web-based interface on
the system side and
to query changes to the status of the plug-in fan in the Command Line
Interface.
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