TN-FRA-MIB :: tnFraRelayAlarmState

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › TN-FRA-MIB › tnFraRelayAlarmState

tnFraRelayAlarmState

Module: TN-FRA-MIB

OID (symbolic): TN-FRA-MIB::tnFraRelayAlarmState

OID (numeric): 1.3.6.1.4.1.868.2.5.21.1.1.1

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-write

Description: Change the state of the relay when an alarm condition is active Normal (1): Relay is activated on alarm Negated(2): Relay is de-activated on alarm

What is tnFraRelayAlarmState?

This object controls the electrical behavior of the device's physical fault-relay contact when a monitored alarm condition becomes active: normal means the relay activates on alarm, while negated means it de-activates instead. An admin picks the setting that matches how their external annunciator or NOC wiring expects the relay to behave, since fail-safe wiring schemes rely on the relay doing the opposite of what seems intuitive. For example, setting tnFraRelayAlarmState to negated(2) on a rack wired with normally-closed contacts ensures a total power loss on the device still trips the external alarm.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.868.2.5.21.1.1.1
snmpwalk -v2c -c public <target> TN-FRA-MIB::tnFraRelayAlarmState

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.868.2.5.21.1.1.1.1
snmpget -v2c -c public <target> TN-FRA-MIB::tnFraRelayAlarmState.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.868.2.5.21.1.1.1.1 i <value>

Start monitoring Transition Networks, Inc. equipment (Fault Relay Alarm power-supply/link status) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the TN-FRA-MIB::tnFraRelayAlarmState OID value, configure state conditions and alerts, and monitor any Transition Networks, Inc. equipment (Fault Relay Alarm power-supply/link status) from a single console.

OID Breakdown

Upper-level ancestors (9 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
1.3.6.1.4.1.868transitionTRANSITION-SMI
1.3.6.1.4.1.868.2productsTRANSITION-SMI
1.3.6.1.4.1.868.2.5tnProductsTRANSITION-SMI
Numeric OIDNameModule
1.3.6.1.4.1.868.2.5.21tnFraMIBTN-FRA-MIB
1.3.6.1.4.1.868.2.5.21.1tnFraObjectsTN-FRA-MIB
1.3.6.1.4.1.868.2.5.21.1.1tnFraMgmtTN-FRA-MIB
1.3.6.1.4.1.868.2.5.21.1.1.1tnFraRelayAlarmStateTN-FRA-MIB