All MIBs › JUNIPER-POWER-SUPPLY-UNIT-MIB › jnxPsuOutletPowerFactorValue
jnxPsuOutletPowerFactorValue
Module: JUNIPER-POWER-SUPPLY-UNIT-MIB
OID (symbolic): JUNIPER-POWER-SUPPLY-UNIT-MIB::jnxPsuOutletPowerFactorValue
OID (numeric): 1.3.6.1.4.1.2636.3.58.1.2.4.1.10
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-only
Description: Power factor percentage of each PSU (2k/3k).
Algorithm for calculation of Power Factor is below. For PowerOut values that fall in between 618.93W and 915.24W, say 700W, the appropriate PF ranges from 0.910191 & 0.917994. Following linear equation could help deduce a fairly accurate input power value.
Linear equation y = mx + b (where m is the slope and b is the Y intercept)
Slope m = (y2 - y1) / (x2 - x1) Y intercept b = y - mx
Plugging it all together for our example:
m = (915.24 - 618.93) / (0.917994 - 0.910191) = 37973.86 b = 915.24 - (37973.86 * 0.917994) = -33944.5
for 700W (y), our efficiency (x) would then be:
x = (700 - (-33944.5)) / 37973.86 = 0.912326 = 91%
PowerIn = 700W /0.912326 = 767.26W
What is jnxPsuOutletPowerFactorValue?
Reports an efficiency percentage for this outlet's PSU (power output divided by power input, not the traditional watts-over-VA power factor); the MIB documents a linear formula an admin can use to derive input power from a given output power and this efficiency value.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2636.3.58.1.2.4.1.10 snmpwalk -v2c -c public <target> JUNIPER-POWER-SUPPLY-UNIT-MIB::jnxPsuOutletPowerFactorValue
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.2636.3.58.1.2.4.1.10.1 snmpget -v2c -c public <target> JUNIPER-POWER-SUPPLY-UNIT-MIB::jnxPsuOutletPowerFactorValue.1
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> jnxPsuOutletPowerFactorValue.1
Start monitoring Juniper Networks chassis-based router/switch (power supply unit health) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the JUNIPER-POWER-SUPPLY-UNIT-MIB::jnxPsuOutletPowerFactorValue OID value, configure state conditions and alerts, and monitor any Juniper Networks chassis-based router/switch (power supply unit health) from a single console.
OID Breakdown
Upper-level ancestors (9 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.2636 | juniperMIB | JUNIPER-SMI |
| 1.3.6.1.4.1.2636.3 | jnxMibs | JUNIPER-SMI |
| 1.3.6.1.4.1.2636.3.58 | jnxPsuMIBRoot | JUNIPER-SMI |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.2636.3.58.1 | jnxPsuMIB | JUNIPER-POWER-SUPPLY-UNIT-MIB |
| 1.3.6.1.4.1.2636.3.58.1.2 | jnxPsuObjects | JUNIPER-POWER-SUPPLY-UNIT-MIB |
| 1.3.6.1.4.1.2636.3.58.1.2.4 | jnxPsuOutletTable | JUNIPER-POWER-SUPPLY-UNIT-MIB |
| 1.3.6.1.4.1.2636.3.58.1.2.4.1 | jnxPsuOutletEntry | JUNIPER-POWER-SUPPLY-UNIT-MIB |
| 1.3.6.1.4.1.2636.3.58.1.2.4.1.10 | jnxPsuOutletPowerFactorValue | JUNIPER-POWER-SUPPLY-UNIT-MIB |