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156 Using the System Setup Program
SNMP
The Simple Network Management Protocol (SNMP) is an application layer
protocol that facilitates the monitoring and management of server enclosure
and the PDU device.
About MIB and Traps
A Management Information Base (MIB) is a collection of managed
information that is organized hierarchically. Managed entities are called
managed objects and are identified by object identifiers. Network
management protocols such as SNMP use MIBs to retrieve managed
information about managed nodes or devices. The managed information is
then transmitted to management applications through SNMP.
SNMP traps are used by managed nodes or devices to asynchronously report
events to the management software. When certain types of events occur, the
managed device sends a trap to the management software.
SNMP Support for the Server Enclosure Fan Controller Board
When an error occurs in the PowerEdge C8000 server enclosure that is
populated with compute sleds, the fan controller board (FCB) provides a
status update to the compute sled's BMC, and BMC send traps to the remote
client.
When an error occurs in the server enclosure that is fully populated with 5
storage sleds, SNMP sends a trap message to the remote client.
There is a common OID (object identifiers) defined in the MIB
(Management Information Base) file. Use the SNMP utility to get the
SNMPv2-MIB file and load the MIB files that are required for managing and
monitoring the server enclosure.
FCB Network Connection
By default, the FCB is configured to automatically obtain an IP address via
DHCP server. A special button-press-sequence MUST be defined that does
not conflict with legacy fan controller uses,
• Long press in 4 seconds, service mode.
• 3 short presses in less than 5 seconds provide switch between default static
IP and reset to default