Snmp Messaging - IBM TS3500 Introduction And Planning Manual

The TS3500 Tape Library is compatible with TapeAlert technology, which provides
error and diagnostic information about the drives and the library to the host
application. The library provides this information as TapeAlert flags that are
reported to the application by the SCSI LOG SENSE command.
For a list of the TapeAlert flags for the drives and the library, see the appropriate
section in the IBM System Storage TS3500 Tape Library with ALMS Operator Guide.

SNMP messaging

This section describes the Simple Network Management Protocol (SNMP), which
allows the TS3500 Tape Library to send alerts over a LAN network to a monitoring
server.
Occasionally, the TS3500 Tape Library may encounter a situation that you want to
know about. These can be conditions that affect library performance, such as an
open door that causes the library to stop, or user actions that you want to have
logged, such as a cartridge move or export that is specifically initiated from the
Tape Library Specialist web interface or the library's operator panel. SNMP
messages can alert you of these conditions.
The library provides a standard TCP/IP protocol called SNMP to send alerts about
conditions (such as an opened door) over a TCP/IP LAN network to an SNMP
monitoring server. These alerts are called SNMP traps. Using the information
supplied in each SNMP trap, the monitoring server (together with
customer-supplied software) can alert operations staff of possible problems or
operator interventions that occur. Many monitoring servers (like NetView
used to send e-mail or pager notifications when they receive an SNMP alert (for
more information, see your NetView documentation or the manuals for your
network management application).
The monitoring server must be loaded with systems management software that can
receive and process the trap. SNMP supports a get and get-response mechanism
for an operator to gather more information about a problem or query the library
about its current status. Through a monitoring server, the operator issues a "get"
via SNMP to request information about the library. A get-response is the
information that is provided in response to the get. This type of support generally
requires an up-to-date library Management Information Base (MIB). The library's
MIB contains units of information that specifically describe an aspect of a system,
such as the system name, hardware number, or communications configuration.
IBM provides the MIBs that are supported by the library. They include:
v IBM 3584 MIB for Version 1 or Version 2c traps
v Storage Networking Industry Association (SNIA) Storage Media Library (SML)
v SNIA SML MIB Version 1.20b
Refer to "Obtaining MIBs" on page 71 for step-by-step instructions for
downloading the correct MIB for your operating system.
An operator cannot change library settings by using SNMP. Settings can only be
changed by using the Tape Library Specialist web interface or operator panel.
Figure 16 on page 71 shows the flow of SNMP communication from the library
over the Ethernet local area network (LAN) to an SNMP monitoring server.
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IBM System Storage TS3500 Tape Library with ALMS: Introduction and Planning Guide
MIB Version 1.12
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