Health Score 0 Due Too critical temperature alarm after upgrading 3820/4500 from SCx637 to SCx720

Asset ID:	1-72-1984717.1
Update Date:	2018-03-21
Keywords:

Solution Type Problem Resolution Sure

Solution 1984717.1 : Health Score 0 Due Too critical temperature alarm after upgrading 3820/4500 from SCx637 to SCx720

Applies to:

Acme Packet 4500 - Version S-Cz7.2.0 and later
Acme Packet 3820 - Version S-Cz7.1.5 and later
Information in this document applies to any platform.

Symptoms

After upgrading a SBC (3820 or 4500 device) to SCx720 from SCx637, the health score of the SBC device decreased to zero, triggering a critical alarm regarding DSP temperature.

Example alarm:

Temperature Sensor PHY TCM1 is at 80.000 degrees C, over critical threshold of 80.000

Cause

The SBC was using NIU cards with DSPs for transcoding, a more powerful fan module is required.

Solution

The SBC (3820 or 4500) was using an older fan module with part number 110-0100-60.
Note: The part number can only be seen on the fan module itself and is not viewable via software.

To resolve this alarm, a more powerful fan module is required in order to use SCx720 and above.
That fan module part number is 110-0109-60-01 and needs to be installed.

From SCZ720 and SCZ730 Release Notes:

Acme Packet 3820 and 4500 Transcoding NIU Support
Acme Packet 3820/4500 chasses with a transcoding NIU upgrading to S-CZ7.2.0 and above must have a high-speed
fan module to avoid overheating problems.

General Link for Session Border Controller Releases can be found here:

http://docs.oracle.com/en/industries/communications/session-border-controller/index.html

References

<BUG:20388311> - TEMPERATURE SENSOR PHY TCM1 IS AT 80.000 DEGREES C, OVER CRITICAL THRESHOLD OF 8

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