Citrix ADC MPX
The ADC MIB has a small subset of hardware sensors. It does not cover any BIOS level failures, because
the BIOS checks the hardware primarily during boot time, before the Citrix ADC soware starts. If the
BIOS detects a failure, it does not load the boot loader. If the boot loader does not load, the operating
system does not load, and therefore the ADC SNMP soware service responsible for sending the traps
does not load.
The Citrix ADC soware Management MIB issues a warning under the following conditions only:
1. If the failure is gradual enough for the main CPU to issue an SNMP alert. An electrical failure
close to the CPU, such as a failed electrical capacitor, occurs too quickly for the CPU to issue an
alert.
2. If the failure happens aer the BIOS, Operating System, and SNMP service have started and
normal boot‑up has been successful.
3. If the failure happens while the operating system and other system soware are in a stable
enough state for the SNMP soware service to run.
Whenever the ADC MIB is unable to report these warnings, because of hardware or soware failure,
the LOM MIB monitors and reports the warnings. The LOM microcontroller operates independently of
the Citrix ADC soware. To monitor the hardware and soware of the Citrix ADC appliance, you must
use both the ADC MIB and the LOM MIB.
The ADC IPMI LOM hardware management MIB SNMP firmware runs on the BMC microcontroller chip.
The BMC chip CPU sends a warning in the case of a hardware failure, regardless of whether any of
the preceding conditions occur. For example, if the BIOS halts the system during boot‑up because of
a memory DIMM failure, the BMC chip uses the BIOS POST code snooping mechanism to detect the
failure. And then sends a bad DIMM SNMP alert.
You can log on to the LOM port to view the health information about the appliance. All system sensor
information, such as system temperature, CPU temperature, and status of fans and power supplies,
appears on the sensor readings page. The Event Log records time stamps of routine events such as a
power cycle, in addition to recording hardware‑failure events. If SNMP traps are enabled, these events
can be sent to your SNMP Network Monitoring soware. For more information about how to set up
an SNMP alert, see Configuring SNMP Alerts.
1. In the Menu bar, click System Health.
2. Under Options, click Sensor Readings.
Install the MIB
Download the IPMI SNMP management information base (MIB) for your LOM firmware version, and
import it into the SNMP monitoring soware.
For a sample configuration, see http://www.net‑snmp.org/tutorial/tutorial‑5/commands/snmptrap.
html. For the exact steps of this procedure specific to your environment, contact your SNMP network
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