UCD-SNMP-MIB-OLD

All MIBs › UCD-SNMP-MIB-OLD

Category: Net-SNMP and Linux

Description: An older version of the UCD-SNMP-MIB providing system monitoring objects, superseded by the current UCD-SNMP-MIB.

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

What Is UCD-SNMP-MIB-OLD?

UCD-SNMP-MIB-OLD is an older, superseded revision of the well-known UCD-SNMP-MIB (now part of Net-SNMP), which provided general-purpose system monitoring extensions for Unix-like hosts before being replaced by the current UCD-SNMP-MIB. It exposes process-monitoring objects (a table of watched processes with name, min/max instance count, and error state) along with an "extensible" table framework for running custom shell-script-based checks. Its core purpose is monitoring software status: whether specific processes/services are running within expected count bounds, and reporting any resulting error flags and messages, plus generic extensible command output that admins used for ad hoc health checks. Being an older revision, it has largely been superseded by the current UCD-SNMP-MIB and NET-SNMP-EXTEND-MIB, so it depends conceptually on that later, more complete module. It would have been deployed on legacy Unix/Linux hosts running early UCD-SNMP agent versions for basic process and script-based system health checks. Engineers can download the UCD-SNMP-MIB-OLD file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in UCD-SNMP-MIB-OLD. 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

Unix/Linux server running legacy UCD-SNMP agent

Monitoring Examples

An admin would walk the processes table (processIndex, processNames) to confirm a named daemon like sshd or httpd is running, checking processCount against the configured processMin/processMax bounds. If the count falls outside those bounds, processErrorFlag is set and processErrMessage explains the failure (e.g., "too few processes running"), with processErrFix potentially indicating a configured corrective command. The extensible/extensibleIndex/extensibleNames objects similarly expose ad hoc script check results for other custom conditions.

What Can Be Monitored

monitored process name
running process count
process count min/max thresholds
process error flag
process error message
extensible/custom script check results

Imported Objects

From SNMPv2-SMI

Integer32
OBJECT-TYPE

From SNMPv2-TC

DisplayString

From UCD-SNMP-MIB

ucdavis

MODULE-IDENTITY

OIDs

OID symbolic	OID numeric	Type	Access	Description
processes	1.3.6.1.4.1.2021.1		not-accessible	A set of information on running programs/daemons.
INT processIndex	1.3.6.1.4.1.2021.1.1	INTEGER	read-only	Reference Index for each observed process.
STR processNames	1.3.6.1.4.1.2021.1.2	DisplayString	read-only	The table of process names we're Counting.
INT processMin	1.3.6.1.4.1.2021.1.3	INTEGER	read-only	The minimum number of processes that should be running. An error flag is generated if the number of running processes is < the minimum.
INT processMax	1.3.6.1.4.1.2021.1.4	INTEGER	read-only	The maximum number of processes that should be running. An error flag is generated if the number of running processes is > the maximum.
INT processCount	1.3.6.1.4.1.2021.1.5	INTEGER	read-only	The number of current processes running with the name in question.
INT processErrorFlag	1.3.6.1.4.1.2021.1.100	INTEGER	read-only	A Error flag to indicate trouble with a process. It goes to 1 if there is an error, 0 if no error.
STR processErrMessage	1.3.6.1.4.1.2021.1.101	DisplayString	read-only	An error message describing the problem (if one exists).
INT processErrFix	1.3.6.1.4.1.2021.1.102	INTEGER	read-write	Setting this to one will try to fix the problem if possible.
extensible	1.3.6.1.4.1.2021.3		not-accessible	Extensible commands returning output and result codes.
INT extensibleIndex	1.3.6.1.4.1.2021.3.1	INTEGER	read-only	Reference Index for extensible calls.
STR extensibleNames	1.3.6.1.4.1.2021.3.2	DisplayString	read-only	Short, one name descriptions of the extensible commands.
STR extensibleCommand	1.3.6.1.4.1.2021.3.3	DisplayString	read-only	The command line to be executed.
INT extensibleResult	1.3.6.1.4.1.2021.3.100	INTEGER	read-only	The result code from the executed command.
STR extensibleOutput	1.3.6.1.4.1.2021.3.101	DisplayString	read-only	The output of the extensible command (top line only).
INT extensibleErrFix	1.3.6.1.4.1.2021.3.102	INTEGER	read-write	Set to 1 to fix the problem, if possible.
disk	1.3.6.1.4.1.2021.6		not-accessible	Disk watching information.
INT diskIndex	1.3.6.1.4.1.2021.6.1	INTEGER	read-only	Reference number for the Disk Mib.
STR diskPath	1.3.6.1.4.1.2021.6.2	DisplayString	read-only	Path where disk is mounted.
STR diskDevice	1.3.6.1.4.1.2021.6.3	DisplayString	read-only	Device path
INT diskMinimum	1.3.6.1.4.1.2021.6.4	INTEGER	read-only	Minimum space required on the disk.
INT diskMinPercent	1.3.6.1.4.1.2021.6.5	INTEGER	read-only	Minimum percentage of space required on the disk.
INT diskTotal	1.3.6.1.4.1.2021.6.6	INTEGER	read-only	Total Disk Size (kbytes)
INT diskAvail	1.3.6.1.4.1.2021.6.7	INTEGER	read-only	Available disk Space
INT diskUsed	1.3.6.1.4.1.2021.6.8	INTEGER	read-only	Used Space on Disk
INT diskPercent	1.3.6.1.4.1.2021.6.9	INTEGER	read-only	Percentage of space used on disk
INT diskErrorFlag	1.3.6.1.4.1.2021.6.100	INTEGER	read-only	Error flag signaling disk is over minimum required space
STR diskErrorMsg	1.3.6.1.4.1.2021.6.101	DisplayString	read-only	A text description of what caused the error flag to be set.
loadaves	1.3.6.1.4.1.2021.7		not-accessible	Load average information.
INT loadaveIndex	1.3.6.1.4.1.2021.7.1	INTEGER	read-only	Reference Index for each observed loadave.
STR loadaveNames	1.3.6.1.4.1.2021.7.2	DisplayString	read-only	The list of loadave names we're Counting.
STR loadaveLoad	1.3.6.1.4.1.2021.7.3	DisplayString	read-only	The 1,5 and 10 minute load averages.
STR loadaveConfig	1.3.6.1.4.1.2021.7.4	DisplayString	read-only	The watch point for loadaverages to signal an error.
INT loadaveErrorFlag	1.3.6.1.4.1.2021.7.100	INTEGER	read-only	A Error flag to indicate trouble with a loadave. It goes to 1 if there is an error, 0 if no error.
STR loadaveErrMessage	1.3.6.1.4.1.2021.7.101	DisplayString	read-only	An error message describing the problem (if one exists).

RFC description

Legacy MIB for monitoring running processes and system resource statistics on UCD/Net-SNMP agents.

Start monitoring Unix/Linux server running legacy UCD-SNMP agent (watched-process count/error-state status) 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 UCD-SNMP-MIB-OLD

What Is UCD-SNMP-MIB-OLD?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description