v4.38 / Memory Warning / AV Cloud Query Bypass ???

USG_UserUSG_User Member Posts: 124  Ally Member
edited May 17, 2020 4:06PM in ZyWALL USG Series
Since we've updated our USG110 from v4.35 to v4.38 on yesterday morning, we've received two Alert Log Warnings for two times:

System remaining 94 MB memory, AV Cloud Query bypass is on

... and 5 min later another warning message:

System remaining 233 MB memory, AV Cloud Query bypass is off

And as said above, this night we got both messages from USG again. What does it mean? Could anybody explain this new 4.38 behaviour? Is our USG running out of memory every day?

All Replies

  • Zyxel_CharlieZyxel_Charlie Zyxel Official Agent Posts: 848  mod
    @USG_User
    System messages: "System remaining x MB memory, AV Cloud Query bypass is on" means that the memory protection mechanism has been triggered by the decreasing resources, which temporarily disables AV Cloud Query (but it will still be verified by local engine)

  • USG_UserUSG_User Member Posts: 124  Ally Member
    edited May 19, 2020 2:26PM
    Thanks Charlie. But why this appeared the first time after installing the v4.38? We never experienced any memory issues before. That's why we're a little bit confused. Does v4.38 consumes more memory? Could it lead to temporarily disabled UTM services?

    From my point of view our system resources are ok.

  • USG_UserUSG_User Member Posts: 124  Ally Member
    edited May 20, 2020 2:14PM
    This morning, right before official office hours began (means less traffic for USG), we received the alert message again:
    1  System remaining 46 MB memory, UTM features bypass is on
    2  System remaining 46 MB memory, AV Cloud Query bypass is on

    And 5 min later:
    1  System remaining 209 MB memory, UTM features bypass is off
    2  System remaining 209 MB memory, AV Cloud Query bypass is off

    Why the USG consumes so much resources since v4.38? Or is this kind of "memory management" a normal behaviour since ever and only sending an alert message is new in v4.38? In any case we are concerned about temporarily bypassing of UTM features at a firewall.

    Does nobody else experience these memory alerts?


  • Zyxel_CharlieZyxel_Charlie Zyxel Official Agent Posts: 848  mod
    @USG_User
    Regarding to this case,
    When the memory is kept on some usage, the UTM feature’s bypass will be turned on, until memory released. However,  it will still be verified by local engine. The message appeared does not the issue, just let users understand device's current status.
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