[Nebula 20.00] Port Advisor Alerts

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  • Zyxel_Tina
    Zyxel_Tina Posts: 794 image  Zyxel Employee
    Zyxel Certified Network Administrator - Security Zyxel Certified Network Administrator - Switch 100 Answers 500 Comments

    Hi @GiuseppeR,

    The hotfix has already been released and applied.

    This issue was mainly related to changes in behavior/mechanism after the recent Nebula update, and the fix was implemented on the NCC side.

    Could you please help confirm whether you are still experiencing these alerts?

    If the issue persists or if you encounter any further concerns, kindly provide us with the organization/site name of the affected sites so we can assist with further investigation. Thank you.

    Zyxel Tina

  • Dylan96
    Dylan96 Posts: 44 image  Freshman Member
    Zyxel Certified Network Administrator - Nebula Zyxel Certified Network Administrator - Security First Comment Friend Collector
    https://community.zyxel.com/en/discussion/comment/84677#Comment_84677

    Hi, @Zyxel_Tina

    After a thorough investigation, it appears that this “flapping” is very often caused by power‑saving features of the device connected to the port.

    In fact, in several cases, simply disabling Ethernet power saving on a PC or the standby mode on a printer was enough to prevent these alerts from being generated.

    This represents an issue because it is not related to any physical problem with the connection.

    The detection mechanism for this alert should therefore be reviewed; otherwise, it's useless.

  • Mk88_it
    Mk88_it Posts: 80 image  Ally Member
    First Comment Friend Collector Fourth Anniversary

    I can confirm what @Dylan96 wrote. It seems that almost 90% cases of these alerts are generated by devices going in power saving mode. Could you improve the detection method for Cable health
    → Poor cable quality ?

  • GiuseppeR
    GiuseppeR Posts: 726 image  Guru Member
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Engineer Level 1 - Nebula 5 Answers First Comment

    Hello everyone, recently I saw a drop in email notifications. So very good.

    Anyway it seems to me that the power saving feature could trigger that alert, honestly I’m still looking to understand this better to collect a proof of that.

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