Installation Guide

Table Of Contents
TABLE 47 Displaying alarm log information (continued)
Description Syntax
To display all alarms in the alarm log related to a specic SFM(where n, is SFM slot 1-8 for MLX/
XMR) and all alarms for it’s subsystems.
show alarm
[history] sfm n all
To display all alarms in the alarm log related to SFM information for a specic SFM(where n, is SFM
slot 1-8 for MLX/XMR)
and either all events on a specic subsystem, or events for a particular subsystem(where subsystem
is temperature or fabric-element)(where x is 1-4 for a fabric element device number).
show alarm
[history] sfm n subsystem [all
| x]
Management and interface modules
When a management module or interface module is removed from the chassis, a major level alarm is generated in the alarm history log.
If the management module, interface module, or SFM is powered o, a critical level alarm is generated in the alarm history log.
When a module is removed or powered o, alarms for all subsystems of the module are cleared from the current alarm log. If a module is
removed from the chassis, all alarms are cleared from the current alarm log, and memory associated to its subsystems is freed. When a
module is added to the conguration, memory is reallocated.
Temperature
If temperature on the management module or interface module increases to the highest threshold, a major alarm is set. If temperature
decreases below the highest threshold, the alarm is cleared from the current alarm log, and an additional alarm is sent to the alarm
history log stating that the condition has been removed. If the temperature increases into shutdown range, a critical level alarm is reported
and logged in the alarm logs.
Optics
Alarms and warnings are monitored only for optic devices that support optical monitoring. If optical monitoring is disabled, then no
alarms are generated.
If an optic is removed or not present, a major alarm is reported and logged and any existing alarms are cleared from the current alarm
log.
NOTE
Alarms are not generated for optic device insertion.
Switch fabric element
If a switch fabric element cannot be accessed, a major alarm is reported and logged.
Chassis fans, power supplies, and optics
If there is an indication that a single fan has failed, a major alarm is reported and logged on the tray. If an incompatible fan tray is
detected, a major alarm is reported and logged on the tray. When a fan tray is removed, any existing alarms are cleared and a major
alarm is reported and logged on the tray.
If a power supply is installed but powered down, a minor alarm is reported and logged. If a power supply is installed incorrectly, a major
alarm is reported and logged. If a power supply is not present, a major alarm is reported and logged.
Using alarms to collect and monitor device status
Extreme Routing MLX Series Hardware Installation Guide
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