StorageTek Installation Manual

SNMP Commands
A-4 Revision L 96053
■ SNMP Commands
SNMPv1 offers a limited number of commands that follow a simple request/response
exchange to communicate between the manager and the agent.
The manager issues request such as:
• Get–A request for information of a specific variable.
• GetNext–A request for the next specific variable.
•Set–A request to change the value of a specific variable.
The agent responds with:
• Get-Response–A response to the manager’s Get and GetNext commands.
• Trap–An asynchronous message to the recipient about an error or event.
Refer to the SNMP software documentation for additional information.
■ Access Control
Because community strings provide a weak form of access control in SNMPv1, Sun
StorageTek’s embedded agent will not rely on the so called “private” community string in
order to accept changes to the library’s configuration. Access control and authorization
for Set operations is performed by using an administrative password. Consequently, Sun
StorageTek’s embedded agent uses only one community string for both Get and Set
operations.
■ Management Information Base
The MIB is a viewable document that contains descriptions about the characteristics for a
managed device. These characteristics are the functional elements for that device which
can be monitored using SNMP software.
To access and view the contents of the MIB using a Web browser, enter the IP Address
or library name and Lseries.mib. For example: http://IP.Address/Lseries.mib
or http://
library_name/Lseries.mib.
Note: Sun StorageTek’s L-series libraries implement only MIB extensions defined in
the LSERIES-TAPE-LIBRARY-MIB under the private (4) section as shown in
Figure A-2 on page A-5.
Figure A-2 on page A-5 shows the MIB hierarchy as a tree structure where the
L-series MIB is located.