SNMP for Android
Introduction
SNMP4Android - The Object Oriented SNMP API for Java Managers and Agents.
It completely based on SNMP4J library with modifications necessary for successful
running it on Android Dalvik environment.
SNMP4Android is an enterprise class free open source and state-of-the-art SNMP implementation.
SNMP4Android supports command generation (managers) as well as command responding
(agents).
What we sell and you get
We sell bundle of libraries adopted and highly optimized for Android. Bundle includes:
- SNMP for Android. Open Source. Provided with source code and our samples.
- RRD for Android. Open Source. Provided with source code and our samples.
- aiCharts - charts engine for Android. The only one commercial component in bundle.
We provide it with special license which allows using it especially for SNMP and
RRD data processing.
We sell only bundle of this three libraries and do not distribute those packages
as standalone components.
Possible Solutions
SNMP Protocol (from Wikipedia)
Simple Network Management Protocol (SNMP) is a UDP-based network protocol. It is
used mostly in network management systems to monitor network-attached devices for
conditions that warrant administrative attention. SNMP is a component of the Internet
Protocol Suite as defined by the Internet Engineering Task Force (IETF). It consists
of a set of standards for network management, including an application layer protocol,
a database schema, and a set of data objects.
SNMP exposes management data in the form of variables on the managed systems (Slaves),
which describe the system configuration. These variables can then be queried (and
sometimes set) by managing applications (Masters).
Overview and basic concepts
In typical SNMP use, one or more administrative computers have the task of monitoring
or managing a group of hosts or devices on a computer network. Each managed system
(also called Slave) executes, at all times, a software component called an agent
(see below) which reports information via SNMP to the managing systems (also called
Masters).
Essentially, SNMP agents expose management data on the managed systems (Slaves)
as variables (such as "free memory", "system name", "number of running processes",
"default route"). But the protocol also permits active management tasks, such as
modifying and applying a new configuration. The managing system (Master) can retrieve
the information through the GET, GETNEXT and GETBULK protocol operations or the
agent (which is on Slave) will send data without being asked using TRAP or INFORM
protocol operations. SNMPv3 INFORM messages are valuable because they provide a
reliable way for this data to be acknowledged by the management system, which is
important because SNMP is a UDP-based protocol. Management systems can also send
configuration updates or controlling requests through the SET protocol operation
to actively manage a system. Configuration and control operations are used only
when changes are needed to the network infrastructure. The monitoring operations
are usually performed on a regular basis.
The variables accessible via SNMP are organized in hierarchies. These hierarchies,
and other metadata (such as type and description of the variable), are described
by Management Information Bases (MIBs).
The SNMP protocol operates in the Application Layer of the Internet Protocol Suite
(Layer 7 of the OSI model). Typically, SNMP uses UDP ports 161 for the agent and
162 for the manager. The manager may send requests from any available source port
to port 161 in the agent (destination port). The agent response will be sent back
to the source port. The manager typically receives notifications (TRAPs and INFORMs)
on port 162. The agent may generate notifications from any available port.
Feedback
Please contact our
Android team if you have any questions or fill in the online support form to leave your comments about the
product.
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