Random latency handling delays on FLEX H at low bandwidth

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  • PeterUK
    PeterUK Posts: 4,552 image  Guru Member
    250 Answers 2500 Comments Friend Collector Eighth Anniversary
    edited December 2025
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    Hi Melen

    I don't know why you think that would help but it didn't as DNS does not go from DMZ to WAN1 but to test your case so that DNS does go by DMZ to WAN1 using 1.1.1.1 (seems that edge is doing in the clear TCP for 1.1.1.1 interesting…) 8.8.8.8 is all UDP the issue still happens

  • Zyxel_Melen
    Zyxel_Melen Posts: 4,914 image  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate
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    Hi @PeterUK

    Based on our replicate, it was improved after this change. To investigate further, could you provide a remote PC for us to check?

    Zyxel Melen


  • PeterUK
    PeterUK Posts: 4,552 image  Guru Member
    250 Answers 2500 Comments Friend Collector Eighth Anniversary
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    Sure I get back to you on that other DNS issue is fully looked into.

  • PeterUK
    PeterUK Posts: 4,552 image  Guru Member
    250 Answers 2500 Comments Friend Collector Eighth Anniversary
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    https://community.zyxel.com/en/discussion/comment/82394#Comment_82394

    PM sent for testing

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