Service Manual

Table Of Contents
Enabling Environmental Monitoring
The device components use environmental monitoring hardware to detect transmit power readings, receive power readings, and
temperature updates.
To receive periodic power updates, you must enable the following command.
Enable environmental monitoring.
enable optic-info-update interval
DellEMC#show interfaces tengigabitethernet 1/1/2/1 transceiver
QSFP 1/2/1 Serial ID Base Fields
QSFP 1/2/1 Id = 0x0d
QSFP 1/2/1 Ext Id = 0x00
QSFP 1/2/1 Connector = 0x23
QSFP 1/2/1 Transceiver Code = 0x08 0x00 0x00 0x00 0x00 0x00 0x00 0x00
QSFP 1/2/1 Encoding = 0x00
QSFP 1/2/1 Length(SFM) Km = 0x00
QSFP 1/2/1 Length(OM3) 2m = 0x00
QSFP 1/2/1 Length(OM2) 1m = 0x00
QSFP 1/2/1 Length(OM1) 1m = 0x00
QSFP 1/2/1 Length(Copper) 1m = 0x01
QSFP 1/2/1 Vendor Rev = A
QSFP 1/2/1 Laser Wavelength = 38.65 nm
QSFP 1/2/1 CheckCodeBase = 0x0d
QSFP 1/2/1 Serial ID Extended Fields
QSFP 1/2/1 BR max = 0
QSFP 1/2/1 BR min = 0
QSFP 1/2/1 Vendor SN = APF12380010GME
QSFP 1/2/1 Datecode = 120925
QSFP 1/2/1 CheckCodeExt = 0xf2
[output truncated]
Recognize an Overtemperature Condition
An overtemperature condition occurs, for one of two reasons: the card genuinely is too hot or a sensor has malfunctioned.
Inspect cards adjacent to the one reporting the condition to discover the cause.
If directly adjacent cards are not normal temperature, suspect a genuine overheating condition.
If directly adjacent cards are normal temperature, suspect a faulty sensor.
When the system detects a genuine over-temperature condition, it powers off the card. To recognize this condition, look for the
following system messages:
CHMGR-2-MAJOR_TEMP: Major alarm: chassis temperature high (temperature reaches or
exceeds threshold of
[value]C)
CHMGR-2-TEMP_SHUTDOWN_WARN: WARNING! temperature is [value]C; approaching shutdown
threshold of [value]C
To view the programmed alarm thresholds levels, including the shutdown value, use the show alarms threshold command.
Example of the show alarms threshold Command
DellEMC#show alarms threshold
-- Temperature Limits (deg C) --
----------------------- ---------------------------------------------
Minor Minor Off Major Major Off Shutdown
CpuOnBoard 95 94 100 99 NA
-- Temperature Limits (deg C) --
----------------------- ---------------------------------------------
Minor Minor Off Major Major Off Shutdown
Bcm56960 100 99 105 104 110
1088
Debugging and Diagnostics