EFM-COMMON-MIB :: dot3OamMode

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › EFM-COMMON-MIB › dot3OamMode

dot3OamMode

Module: EFM-COMMON-MIB

OID (symbolic): EFM-COMMON-MIB::dot3OamMode

OID (numeric): 1.3.6.1.2.1.9908.1.1.1.3

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-write

Description: This object configures the mode of OAM operation for this Ethernet like interface. OAM on Ethernet interfaces may be in 'active' mode or 'passive' mode. These two modes differ in that active mode provides additional capabilities to initiate monitoring activities with the remote OAM peer entity, while passive mode generally waits for the peer to initiate OAM actions with it. As an example, an active OAM entity can put the remote OAM entity in a loopback state, where a passive OAM entity cannot.

The default value of dot3OamMode is dependent on the type of system on which this Ethernet like interface resides. The default value should be 'active(1)' unless it is known that this system should take on a subservient role to the other device connected over this interface.

Changing this value results in incrementing the configuration revision field of locally generated OAMPDUs (30.3.6.1.12) and potentially re-doing the OAM discovery process if the dot3OamOperStatus was already operational(9).

What is dot3OamMode?

Sets whether this Ethernet OAM entity is active(1), which can initiate actions like remote loopback against the peer, or passive(2), which mostly waits for the peer to act; changing it bumps the local configuration revision and can restart the OAM discovery handshake if the link was already operational.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.2.1.9908.1.1.1.3
snmpwalk -v2c -c public <target> EFM-COMMON-MIB::dot3OamMode

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.2.1.9908.1.1.1.3.1
snmpget -v2c -c public <target> EFM-COMMON-MIB::dot3OamMode.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.2.1.9908.1.1.1.3.1 i <value>

Start monitoring Ethernet access/carrier equipment supporting 802.3ah EFM OAM (vendor-neutral IETF standard) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the EFM-COMMON-MIB::dot3OamMode OID value, configure state conditions and alerts, and monitor any Ethernet access/carrier equipment supporting 802.3ah EFM OAM (vendor-neutral IETF standard) 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
1.3.6.1.2mgmtAPERTUS-NPG-MIB
1.3.6.1.2.1mib_2AXON-MIB
Numeric OIDNameModule
1.3.6.1.2.1.9908efmOamMIBEFM-COMMON-MIB
1.3.6.1.2.1.9908.1dot3OamMIBEFM-COMMON-MIB
1.3.6.1.2.1.9908.1.1dot3OamTableEFM-COMMON-MIB
1.3.6.1.2.1.9908.1.1.1dot3OamEntryEFM-COMMON-MIB
1.3.6.1.2.1.9908.1.1.1.3dot3OamModeEFM-COMMON-MIB