Skylight performance element: LT Release Notes 7.8.3.4

These release notes cover the requirements, new features, changes, addressed issues and known limitations for the LT Performance Element firmware version 7.8.3.4. Please read all the notes prior to installing this firmware version.

Requirements

This firmware version applies to the following Skylight element: LT. Resulting from changes in the TLS version, the following software versions are compatible with SkyLIGHT Director Version 1.3 (now Skylight orchestrator) and above:

• 7.1.1.1
• 7.3.0.3
• 7.4
• 7.5
• 7.6
• 7.7
• 7.8
• 7.8.1
• 7.8.2
• 7.8.2.1
• 7.8.3
• 7.8.3.1
• 7.8.3.2
• 7.8.3.3
• 7.8.3.4

Firmware Version 7.8.3.4_25275 (2022-01-18)

New Features and Enhancements

None.

Addressed Issues

Spurious Reboot
Reboot issues reported found that the FPGA generated too many PPS signals towards the CPU because the GPS module was not present. The source of the signal was not from the GPS but from the noise on the unused input pin. It caused the wrong GPS PPS interrupts and made the unit suspended / rebooted. User changed ERP version from 2 to 1, and then back to 2, on a working ERP ring in the LAG port. Traffic was initially okay but the device stopped traffic after reboot.

Possible reboot signatures are:

• The reported alarms from LT-S units stating: "SEVERITY: critical (nsa), MSG: PCB temperature sensor not present alarm".
• KOOPS: <2>SoftDog: Initiating system reboot.
• Kernel panic

These issues have been fixed.

Security assessment showed ntp user/password Issues

The npt user was able to login successfully via WEB UI, however experienced restricted permission to perform normal operations.

This issue has been fixed.

Overall Y.1564 test result is showing a pass, when test actually failed

Configuration test and Performance tests were unsuccessful and the test's overall results indicated that the "Test Overall Result: PASSED" on both Skylight performance element and Skylight orchestrator.

This issue has been fixed.

New periodic log is flooding the syslogs

Flash Boot Refresh feature introduced a new parameter: bootrefresh_remain_period. This is being saved to the configuration file hourly and flooding the syslogs.

This issue has been fixed.

Unusual log showing server with error: wanted 20 got -1

Server write error: wanted 20 got -1” was observed after device upgraded from older release and on new 7.8.3.1 devices.

This issue has been fixed.

Operational Considerations

• The GT Performance Element firmware is delivered in a consolidated file prefixed by "ACC", e.g. ACC_7.X_YYYY.afl. This file contains the firmware for the GT, GX and LT Performance Element products. It cannot be used with any other product.
• IMPORTANT: Prior to upgrading the firmware on a unit where the History Buckets feature is enabled, certain precautions may need to be taken to prevent a loss of history data during the upgrade.