HP ProLiant xw460c Blade Workstation - Manual (Page 42)

SNMP MIBs support 42
SNMP MIBs support
In this section
MIB overview......................................................................................................................................... 42
SNMP Manager software........................................................................................................................ 42
Supported MIBs ..................................................................................................................................... 43
Supported traps ..................................................................................................................................... 43
MIB overview
Management and statistics information is stored in the switch in the MIB. The switch supports several
standard MIBs. Values for MIB objects are retrieved with any SNMP-based network management
software.
In addition to the standard MIBs, the switch also supports its own proprietary enterprise MIB as an
extended MIB. The proprietary MIB is retrieved by specifying the MIB OID at the network manager
station.
MIB values are either read-only or read/write variables.
• Read-only MIB variables are constants that are programmed into the switch or variables that change
while the switch is in operation. Examples of read-only constants include the number and types of
ports. Examples of read-only variables are the statistics counters, such as the number of errors that
have occurred or how many kilobytes of data have been received and forwarded through a port.
• Read/write MIB variables are usually related to user-customized configurations. Examples include
the IP address of the switch, Spanning Tree Algorithm parameters, and port status.
SNMP Manager software
Using third-party vendor SNMP software to manage the switch allows access to proprietary enterprise
MIBs for the switch. The MIBs are found in the utilities on the HP website
(
http://www.hp.com/go/bladesystem/documentation ).
If the software provides functions to browse or modify MIBs, the MIB values (if the MIB attributes permit
the write operation) are changeable. This process can be quite involved, because the MIB OIDs (available
in the MIB files) must be used and retrieved one by one.
Use an SNMP manager, such as HP OpenView Network Node Manager or HP Systems Insight Manager,
to access the enterprise-specific MIBs. Compile the MIBs into the MIB database and then use a MIB
browser to navigate through them. For detailed information, access the individual descriptions of each
MIB or see the documentation that came with the SNMP manager software.
The switch SNMP agent supports SNMP Version 1. Security is provided through SNMP community strings.
The default community strings are "public" for SNMP GET operation and "private" for SNMP SET
operation.
Users can specify up to two trap hosts for receiving SNMP traps. The agent sends the SNMP trap to the
specified hosts when appropriate. Traps are not sent if there is no host specified.