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on 10-24-2013 08:11 AM
ENVMON Reports the Wrong Volage Value or Wrong Voltage Range
There are two cosmetic issues (voltage read and voltage range) which have been identified with the voltage sensors in RSP440s, 9912RPs, and 9922RPs. In the event there is a voltage issue, the linecards have the facility to power-down to prevent damage.
The following are examples of envmon sensor logs.
ENVMON Reports the Wrong Voltage Range
Envmon generates a syslog message due to using the wrong voltage range.
RP/1/RSP0/CPU0:Aug 6 17:32:15.900 : envmon[207]: %PLATFORM-ENVMON-4-CARD_VOLTAGE_ALARM : Voltage sensor alarm slot 1/RSP0/CPU0, sensor VP7P0 measured 6997 mV and out of operational range 3387 - 3614 mV
In this case the VP7P0 sensor reports 6997mV, which is outside the reported range of 3387 - 3614mV.
Use the verification steps to identify the actual current value of the sensor and the expected range.
EVNMON Reports the Wrong Voltage Value
Envmon generates a syslog message due to using the wrong voltage value.
RP/0/RSP0/CPU0:Jul 29 05:52:49.641 : envmon[206]: %PLATFORM-ENVMON-4-CARD_VOLTAGE_ALARM : Voltage sensor alarm slot 0/RSP1/CPU0, sensor VP1P2_SERDES_PLL_DAO measured 2500 mV and out of operational range 1176 - 1224 mV
In this case the VP1P2_SERDES_PLL_DAO sensor reports 2500 mV which is outside the reported range 1176 - 1224 mV. The 'read' value may be 0, lower, or higher than the true value as indicated in the verification steps.
Use the verification steps to identify the actual current value of the sensor and the expected range.
Verification
Check show environment voltages to see the current voltage value for the sensors.
RP/0/RSP0/CPU0:router# show environment voltages
R/S/I Modules Sensor (mV) Margin
<snip>
0/RSP1/*
host VP3P3_CAN 3298 n/a
host VP2P5 2500 n/a
host VP3P3 3299 n/a
host VP1P2 1199 n/a
host VP1P5 1499 n/a
host VP1P8 1800 n/a
host VP5P0 5000 n/a
host VP7P0 6997 n/a
host VP2P5_DB 2500 n/a
host VP1P8_DB 1800 n/a
host VP1P5_DB 1501 n/a
host VP1P2_DB 1199 n/a
host VP0P75_DB 751 n/a
host VP1P05_DB 1050 n/a
host VP1P0_SAC0_VDDA 1000 n/a
host VP1P0_SAC0_VDDD_VDDACM 1001 n/a
host VP1PX_ARB 1000 n/a
host VP1P2_SERDES_PLL_LGN 1200 n/a
host VP1P0_SAC1_VDDD_VDDACM 999 n/a
host VP1P0_SAC1_VDDA 1000 n/a
host VP1P0_SAC1_VDD 999 n/a
host VP1P0_SAC0_VDD 1000 n/a
host VP1P0_DAO 1000 n/a
host VP1P0_KAW_LDO 1000 n/a
host VP1P0_MGTVCC_DAO 1000 n/a
host VP1P2_SERDES_PLL_DAO 1200 n/a
host VP1P0_SKT_IO 1000 n/a
host VP1P0_SKT_CORE 1000 n/a
host VP1P9_LDO 1899 n/a
host VP1P8_10GPHY_LDO 1800 n/a
host VP1P2_10GPHY_01 1199 n/a
host VP0P75_TMX_VTT 745 n/a
host VP3P3_OCXO 3299 n/a
host VP1P8_OCXO 1800 n/a
<snip>
Check show environment table to see the acceptable voltage range for the sensors.
RP/0/RSP0/CPU0:router# show environment table
R/S/I Modules Sensor Minor Major Critical
(Lo Hi) (Lo Hi) (Lo Hi)
<snip>
0/RSP1/*
host Inlet0 --/ -- --/ -- --/ --
host Hotspot0 --/ -- --/ -- --/ 81
host VP3P3_CAN 3234/ 3366 --/ -- --/ --
host VP2P5 2375/ 2625 --/ -- --/ --
host VP3P3 3234/ 3366 --/ -- --/ --
host VP1P2 1176/ 1224 --/ -- --/ --
host VP1P5 1470/ 1530 --/ -- --/ --
host VP1P8 1764/ 1836 --/ -- --/ --
host VP5P0 4900/ 5100 --/ -- --/ --
host VP7P0 6650/ 7350 --/ -- --/ --
host VP2P5_DB 2450/ 2550 --/ -- --/ --
host VP1P8_DB 1764/ 1836 --/ -- --/ --
host VP1P5_DB 1470/ 1530 --/ -- --/ --
host VP1P2_DB 1176/ 1224 --/ -- --/ --
host VP0P75_DB 735/ 765 --/ -- --/ --
host VP1P05_DB 1029/ 1071 --/ -- --/ --
host VP1P0_SAC0_VDDA 980/ 1020 --/ -- --/ --
host VP1P0_SAC0_VDDD_VDDA 980/ 1020 --/ -- --/ --
host VP1PX_ARB 980/ 1020 --/ -- --/ --
host VP1P2_SERDES_PLL_LGN 1176/ 1224 --/ -- --/ --
host VP1P0_SAC1_VDDD_VDDA 980/ 1020 --/ -- --/ --
host VP1P0_SAC1_VDDA 980/ 1020 --/ -- --/ --
host VP1P0_SAC1_VDD 980/ 1020 --/ -- --/ --
host VP1P0_SAC0_VDD 980/ 1020 --/ -- --/ --
host VP1P0_DAO 980/ 1020 --/ -- --/ --
host VP1P0_KAW_LDO 980/ 1020 --/ -- --/ --
host VP1P0_MGTVCC_DAO 980/ 1020 --/ -- --/ --
host VP1P2_SERDES_PLL_DAO 1176/ 1224 --/ -- --/ --
host VP1P0_SKT_IO 980/ 1020 --/ -- --/ --
host VP1P0_SKT_CORE 980/ 1020 --/ -- --/ --
host VP1P9_LDO 1862/ 1938 --/ -- --/ --
host VP1P8_10GPHY_LDO 1764/ 1836 --/ -- --/ --
host VP1P2_10GPHY_01 1176/ 1224 --/ -- --/ --
host VP0P75_TMX_VTT 735/ 765 --/ -- --/ --
host VP3P3_OCXO 3234/ 3366 --/ -- --/ --
host VP1P8_OCXO 1764/ 1836 --/ -- --/ --
<snip>
VP7P0 is currently 6999mV which is between 6650 and 7350. The syslog message can be ignored.
VP1P2_SERDES_PLL_DAO is currently 1200 which is between 1176 and 1224. The syslog message can be ignored.
As these are false positives and the true values are correct no corrective actions are taken.
These cosmetic issues are fixed in 4.3.4, 5.1.1, and 5.2.0
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