System Overview Guide
SNMP was designed to facilitate managing a heterogeneous set
of networked devices that communicate using TCP/IP.
Specifically, it addressed management of the network itself and
the network traffic between those devices. Over time, MIBs were
defined to expand the types of devices that could be managed
using SNMP. For example, MIBs were defined specific to
managing a workstation or a printer.
The system currently supports variables defined in the following
MIB-II (RFC 1156)
This MIB defines the basic set of variables any device
running TCP/IP should make accessible. It includes, for a
particular device, variables for information such as a system
description, information about each of the network interfaces
present on the device, and information about all the IP
datagrams sent and received by the device.
Host Resources MIB (RFC 1514)
This MIB defines variables useful in managing a "host"
system. In this context, a host is a computer that is directly
used by human beings and that communicates with other
similar computers attached through a network. The Host
Resources MIB includes information such as how long the
system has been up, descriptions of the processors and
attached storage devices, and possibly information about
software running on the host.
Printer MIB (RFC 1759)
This MIB defines information useful in managing a printer. It
includes information about the physical status of the printer,
such as the number of input trays, the media loaded in them,
and the number and types of marking engines included in the
Most variables in these MIBs are supported in a standard way,
as described in the standard documentation, except that writing
to read/write variables is not supported. All variables are treated
as read-only. In all cases, the NPS/IPS SNMP implementation
supplies textual information only in English.