Dell Networking S6000 Uživatelský manuál stáhnout pdf (Strana 959)

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Hardware Watchdog Timer

The hardware watchdog command automatically reboots an Dell Networking OS switch/router with a

single RPM that is unresponsive.

This is a last resort mechanism intended to prevent a manual power cycle.

Enabling Environmental Monitoring

The 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

Example of the show interfaces transceiver Command

Dell#show interfaces transceiver

-- RPM Environment Status --

Slot Status Temp Voltage

------------------------------

0 active 33C ok

1 not present

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

Dell#show alarms threshold

-- Temperature Limits (deg C) --

------------------------------------------

Minor Minor Off Major Major Off Shutdown

Linecard 75 70 80 77 85

S-Series Debugging and Diagnostics

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1 2 ... 954 955 956 957 958 959 960 961 962 963 964 ... 985 986

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