DISMAN-SCHEDULE-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsDISMAN-SCHEDULE-MIB

Organization: IETF Distributed Management Working Group

Last Updated: 2002-01-07

Category: SNMP Framework

Description: Defines objects for scheduling SNMP SET operations on the local agent at specified times or periodic intervals.

IPNetwork Monitor uses several OIDs from this MIB in network discovery and polling the applicable devices. Start monitoring DISMAN-SCHEDULE-MIB with a free 30-day trial of IPNetwork Monitor.

What Is DISMAN-SCHEDULE-MIB?

DISMAN-SCHEDULE-MIB is a vendor-neutral IETF Distributed Management standard MIB that defines objects for scheduling SNMP SET operations on the local agent, either at specific calendar times or on periodic intervals. It exposes a schedule table describing when configured actions should run, along with the local time reference used for evaluation. Its monitoring role is administrative rather than hardware-focused: it lets an operator confirm which automated configuration changes are scheduled, verify the agent's local time is correct, and detect scheduling entries that may be misconfigured or disabled. It is commonly used in conjunction with DISMAN-EVENT-MIB and SNMPv3 SET operations to build self-managing, autonomous device behaviors. It is typically deployed on SNMP agents that need to perform recurring or time-based configuration changes, such as periodic resets or scheduled parameter updates, without external cron-like infrastructure. Engineers implementing or auditing this functionality typically reference the DISMAN-SCHEDULE-MIB RFC/standard documentation for the authoritative specification.

IPNetwork Monitor allows you to monitor SNMP objects defined in DISMAN-SCHEDULE-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

  • vendor-neutral, standards-based MIB, not tied to a specific manufacturer; applies to any SNMP agent supporting scheduled operations

Monitoring Examples

An operator can poll schedTable/schedEntry to review schedName, schedDescr, and the timing fields schedInterval, schedWeekDay, schedMonth, schedDay, schedHour, and schedMinute for each scheduled action, confirming whether a maintenance task is set to run at the intended time. Comparing schedLocalTime against the expected wall-clock time helps detect agent clock drift that would cause scheduled SETs (referenced via schedObjects) to fire at the wrong moment.

What Can Be Monitored

  • scheduled task name and description
  • schedule interval/day/hour/minute
  • agent local time reference
  • scheduled objects targeted for SET
Imported Objects

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32
mib-2
zeroDotZero

From SNMPv2-TC

DateAndTime
RowStatus
StorageType
TEXTUAL-CONVENTION
VariablePointer

How to Use in IPNetwork Monitor

Example using schedFailures OID:

Select an SNMP agent supporting scheduled operation (vendor-neutral, DISMAN) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type schedFailures into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. This variable counts the number of failures while invoking the scheduled action. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases between polls, since a rising count of errors, failures, or discards often points to a real underlying problem. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

Enables scheduling of SNMP set operations at specific times or periodic intervals for distributed network management automation.

Start monitoring SNMP agent supporting scheduled operations (vendor-neutral, DISMAN) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download DISMAN-SCHEDULE-MIB