Applies To:

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sol13956: The VIPRION B2100 blade may erroneously report a high or low voltage error
Known IssueKnown Issue

Original Publication Date: 10/23/2012
Updated Date: 04/18/2014

Description

The VIPRION B2100 blades may randomly report an erroneous high or low voltage error.

Impact

None. If the errors occur as described in the following Symptoms section, you can safely ignore the errors; they do not indicate hardware failure.

Symptoms

As a result of this issue, you may encounter the following symptoms:

  • The /var/log/ltm file may report one or more voltage error messages that appear similar to the following examples:

    slot1/hostname crit chmand[<pid>]: 012a0013:2: Blade 1 hardware sensor indicated critical condition
    slot1/hostname emerg system_check[<pid>]: 010d0009:0: Mezzanine 0.75V voltage: voltage (xxxx) is too (high/low).
    slot1/hostname emerg system_check[<pid>]: 010d0009:0: Mezzanine 1.0V IDT voltage: voltage (xxxx) is too (high/low).
    slot1/hostname emerg system_check[<pid>]: 010d0009:0: Mezzanine 1.25V voltage: voltage (xxxx) is too (high/low).
    slot1/hostname emerg system_check[<pid>]: 010d0009:0: Blade 0.75V voltage: voltage (xxxx) is too (high/low).
    slot1/hostname emerg system_check[<pid>]: 010d0009:0: Blade 1.5V voltage: voltage (xxxx) is too (high/low).
    slot1/hostname emerg system_check[<pid>]: 010d0009:0: Blade 1.8V voltage: voltage (xxxx) is too (high/low).

    Note: The reported voltages (xxxx) are in millivolts.

  • The error messages appear in close proximity to one another in the ltm log, normally within a one to two minute block, and the messages do not appear elsewhere in the current ltm log history.
  • The front panel Alarm LED is red, indicating a critical alarm.

Status

F5 Product Development has assigned ID 408169 to this issue, and has confirmed that this issue exists in the products listed in the Applies To box. For information about releases or hotfixes that resolve this issue, refer to the following table:

Type of Fix
Versions Fixed
Related Articles
Release 11.4.0 SOL2200: Most recent versions of F5 software
Hotfix 11.3.0 HF5
11.2.1 HF6
11.2.0 HF6
11.1.0 HF9
10.2.4 HF7
SOL9502: BIG-IP hotfix matrix

Workaround

To work around this issue, you can reset the alarm. To do so, perform one of the following two procedures:

Resetting the alarm using the front LCD panel

Impact of workaround: Performing the following procedure should not have a negative impact on your system.

To clear the alarm, press the check button on the LCD panel, and confirm the action, when prompted.

Remotely resetting the alarm

Impact of workaround: Performing the following procedure should not have a negative impact on your system.

For instructions about resetting the alarm remotely, refer to SOL11094: Clearing the LCD and the Alarm LED remotely.

Supplemental Information

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