SYNOLOGY-SYSTEM-MIB :: upgradeAvailable

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › SYNOLOGY-SYSTEM-MIB › upgradeAvailable

upgradeAvailable

Module: SYNOLOGY-SYSTEM-MIB

OID (symbolic): SYNOLOGY-SYSTEM-MIB::upgradeAvailable

OID (numeric): 1.3.6.1.4.1.6574.1.5.4

Node type: OBJECT-TYPE

Type: Integer32

Access: read-only

Description: This oid is for checking whether there is a latest DSM can be upgraded. Available(1): There is version ready for download. Unavailable(2): The DSM is latest version. Connecting(3): Checking for the latest DSM. Disconnected(4): Failed to connect to server. Others(5): If DSM is upgrading or downloading, the status will show others.

What is upgradeAvailable?

This value reports whether a newer DSM (Synology's operating system) build is available for the NAS, using a five-way code: Available(1) means a new version is ready to download, Unavailable(2) means the unit is already current, Connecting(3) means it's checking the update server, Disconnected(4) means that check failed, and Others(5) covers an in-progress upgrade or download. An administrator polls this to know when to schedule a maintenance window for applying DSM updates. For example, seeing upgradeAvailable return Available(1) would tell an admin a newer DSM release is ready to be installed on that unit.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.6574.1.5.4
snmpwalk -v2c -c public <target> SYNOLOGY-SYSTEM-MIB::upgradeAvailable

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.6574.1.5.4.1
snmpget -v2c -c public <target> SYNOLOGY-SYSTEM-MIB::upgradeAvailable.1

SNMPv3 example:

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

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OID Breakdown

Upper-level ancestors (7 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
1.3.6.1.4.1.6574synologySYNOLOGY-DISK-MIB
Numeric OIDNameModule
1.3.6.1.4.1.6574.1synoSystemSYNOLOGY-SYSTEM-MIB
1.3.6.1.4.1.6574.1.5dsmInfoSYNOLOGY-SYSTEM-MIB
1.3.6.1.4.1.6574.1.5.4upgradeAvailableSYNOLOGY-SYSTEM-MIB