UCD-SNMP-MIB :: memAvailSwapX

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsUCD-SNMP-MIBmemAvailSwapX

memAvailSwapX

Module: UCD-SNMP-MIB

OID (symbolic): UCD-SNMP-MIB::memAvailSwapX

OID (numeric): 1.3.6.1.4.1.2021.4.19

Node type: OBJECT-TYPE

Type: CounterBasedGauge64

Access: read-only

Description: The amount of swap space currently unused or available.

What is memAvailSwapX?

This OID reports the amount of swap space currently unused or available on this host, in kilobytes. An admin monitors it to catch a system that is close to exhausting its swap space, a sign of severe memory pressure.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2021.4.19
snmpwalk -v2c -c public <target> UCD-SNMP-MIB::memAvailSwapX

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.2021.4.19.1
snmpget -v2c -c public <target> UCD-SNMP-MIB::memAvailSwapX.1

SNMPv3 example:

snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> memAvailSwapX.1

Start monitoring Unix/Linux servers running the Net-SNMP (net-snmp/snmpd) agent (CPU/memory/disk/process-table status) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the UCD-SNMP-MIB::memAvailSwapX OID value, configure state conditions and alerts, and monitor any Unix/Linux servers running the Net-SNMP (net-snmp/snmpd) agent (CPU/memory/disk/process-table status) from a single console.

OID Breakdown

Upper-level ancestors (6 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
Numeric OIDNameModule
1.3.6.1.4.1.2021ucdavisUCD-SNMP-MIB
1.3.6.1.4.1.2021.4memoryUCD-SNMP-MIB
1.3.6.1.4.1.2021.4.19memAvailSwapXUCD-SNMP-MIB