NBS-EFM-MIB :: nbsEfmOamOperState

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsNBS-EFM-MIBnbsEfmOamOperState

nbsEfmOamOperState

Module: NBS-EFM-MIB

OID (symbolic): NBS-EFM-MIB::nbsEfmOamOperState

OID (numeric): 1.3.6.1.4.1.629.300.1.3.1.1.54

Node type: OBJECT-TYPE

Type: OCTET STRING

Access: read-only

Description: This object declares configurable (*) and operational reasons for
disabling OAM service. The reason applies only if the bit is set.
Multiple bits may be set concurrently. OAM service is enabled
when no bits are set.

Bit  Reason to disable
--- ----------------------------------------------
0  reserved
1  reserved
2  reserved
3  reserved
4  reserved
5  Temporarily disabled for download processing
6  Administratively disabled (*)
7  OAM service is not available

OCTET STRING bitmasks count the leftmost bit (MSB) as 0.

What is nbsEfmOamOperState?

This OID is a bitmask reporting operational reasons OAM service on this interface may be disabled, such as bit 5 (temporarily disabled for download), bit 6 (administratively disabled), or bit 7 (OAM service unavailable); OAM is enabled only when no bits are set. An admin decodes this bitmask to find the specific reason OAM isn't running, beyond just knowing the admin state was set to disable.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.629.300.1.3.1.1.54
snmpwalk -v2c -c public <target> NBS-EFM-MIB::nbsEfmOamOperState

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.629.300.1.3.1.1.54.1
snmpget -v2c -c public <target> NBS-EFM-MIB::nbsEfmOamOperState.1

Start monitoring MRV/NBS optical Ethernet access switch (802.3ah EFM OAM) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the NBS-EFM-MIB::nbsEfmOamOperState OID value, configure state conditions and alerts, and monitor any MRV/NBS optical Ethernet access switch (802.3ah EFM OAM) from a single console.

OID Breakdown

Upper-level ancestors (12 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
1.3.6.1.4.1.629nbaseGSWITCH-MIB
1.3.6.1.4.1.629.300mrvEfmMibMRV-EFM-MIB
1.3.6.1.4.1.629.300.1mrvEfmObjectsMRV-EFM-MIB
1.3.6.1.4.1.629.300.1.3mrvEfmOamGrpMRV-EFM-MIB
1.3.6.1.4.1.629.300.1.3.1mrvEfmOamTableMRV-EFM-MIB
1.3.6.1.4.1.629.300.1.3.1.1mrvEfmOamEntryMRV-EFM-MIB
Numeric OIDNameModule
1.3.6.1.4.1.629.300.1.3.1.1.54nbsEfmOamOperStateNBS-EFM-MIB