Understanding snmp – Sybase Adaptive Server Anywhere SNMP Extension Agent User Manual
Page 18
Understanding SNMP
Simple Network Management Protocol (SNMP) is a standard protocol used
for network management. SNMP allows managers and agents to
communicate: managers send requests to agents, and agents respond to
queries from managers. Additionally, agents can notify managers when
specific events occur using notifications called traps.
SNMP agents handle requests to get and set the values of variables for
managed objects. Each variable has a single value, and values are generally
strings or integers, although they may also be other types.
Variables are kept in a global hierarchy, and each variable has a unique
number under its parent. The full name of a variable (including all its
parents) is called the Object Identifier (OID). All OIDs that are owned by
Sybase begin with
1.3.6.1.4.1.897
.
The list of OIDs that an agent supports, including their names, types, and
other information are stored in a file called a Management Information
Base (MIB).
A MIB is a database that stores network management information about
managed objects. The MIB is separate from the Adaptive Server Anywhere
database you are monitoring using the Adaptive Server Anywhere SNMP
Extension Agent. The values of MIB objects can be changed or retrieved
using SNMP. MIB objects are organized in a hierarchy with the most general
information about the network located at the top level of the hierarchy. The
Adaptive Server Anywhere SNMP Extension Agent supports the following
MIBs:
♦
Adaptive Server Anywhere MIB
a MIB created specifically for the
Adaptive Server Anywhere SNMP Extension Agent. All the OIDs in the
Adaptive Server Anywhere MIB begin with
1.3.6.1.4.1.897.2
. The
Adaptive Server Anywhere MIB lists the OIDs for the statistics,
properties, and option values that can be retrieved, and in some cases set,
using the Adaptive Server Anywhere SNMP Extension Agent.
☞
For more information about the Adaptive Server Anywhere MIB, see
“The Adaptive Server Anywhere MIB” on page 7
♦
RDBMS MIB
a generic, vendor-independent MIB for relational
databases. This MIB contains information about the database servers and
databases in your system.
☞
For more information about the RDBMS MIB, see
6