Microhard Systems IPN3G - Snmp

© Microhard Systems Inc. 37
4.0 WebUI Configuration
4.3.6 Network > SNMP
The IPn3G may be configured to operate as a Simple Network Management Protocol (SNMP) agent.
Network management is most important in larger networks, so as to be able to manage resources and
measure performance.
SNMP may be used in several ways:
 configure remote devices
 monitor network performance
 detect faults
 audit network usage
 detect authentication failures
A SNMP management system (a PC running SNMP management software) is required for this service to
operate. An SNMP MIB Browser can be also be used to provision the IPn3G, these utilities are not supplied
by Microhard Systems, but many free and premium types of browsers are available on the market. This sys-
tem must have full access to the IPn3G network. Communications is in the form of queries (information
requested by the management system) or traps (information initiated at, and provided by, the SNMP agent
in response to predefined events).
Objects specific to the IPn3G are hosted under private enterprise number 21703.
An object is a variable in the device and is defined by a Management Information Database (MIB). Both the
management system and the device have a copy of the MIB. The MIB in the management system provides
for identification and processing of the information sent by a device (either responses to queries or device-
sourced traps). The MIB in the device relates subroutine addresses to objects in order to read data from, or
write data to, variables in the device. Contact Microhard Systems Inc, for the most recent MIB file.
An SNMPv1 agent accepts commands to retrieve an object, retrieve the next object, set and object to a
specified value, send a value in response to a received command, and send a value in response to an event
(trap).
SNMPv2c adds to the above the ability to retrieve a large number of objects in response to a single request.
SNMPv3 adds strong security features including encryption; a shared password key is utilized. Secure de-
vice monitoring over the Internet is possible. In addition to the commands noted as supported above, there
is a command to synchronize with a remote management station.
Custom MIBs can be obtained by contacting Microhard Systems Inc. Appendix F: SNMP MIB Sample con-
tains the first few pages of the IPn3G MIB to be used as a reference The MIB file can change when new
features are added, so it is best to contact us for the complete and latest MIB file for the IPn3G.
SNMP: Simple Network
Management Protocol
provides a method of
managing network
devices from a single PC
running network
management software.
Managed networked
devices are referred to as
SNMP agents.