Uplink a L3 switch with multi vlans to 700H via SFP.

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  • Zyxel_Judy
    Zyxel_Judy Posts: 2,594 image  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula
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    Hi @jef ,

    We assume that you want to add p3 (RJ45) and p14 (SFP+) to the VLAN10 interface as members, for example. Unfortunately, this configuration cannot be implemented due to a design limitation mentioned in our Release Notes.

    image.png

    However, if you simply want clients connected to p3 and p14 to communicate with each other, you can configure p14 with a different VLAN. The firewall will handle inter-VLAN routing to enable communication between the ports.

    Zyxel_Judy

  • jef
    jef Posts: 107 image  Ally Member
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    Thanks, I figured it out the hard way, but I appreciate the confirmation.

  • jef
    jef Posts: 107 image  Ally Member
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    edited June 2025
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    Can p13 and p14 be grouped together? Please say yes..

  • Zyxel_Judy
    Zyxel_Judy Posts: 2,594 image  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula
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    https://community.zyxel.com/en/discussion/comment/78134#Comment_78134

    P13 and P14 cannot be grouped together and must be configured as individual ports.

    Zyxel_Judy

  • jef
    jef Posts: 107 image  Ally Member
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    Thanks, not the answer I was hoping for but still very much appreciated.
    Could this be resolved in future firmware? Because that is a problem, vlans are about grouping ports.

  • Zyxel_Judy
    Zyxel_Judy Posts: 2,594 image  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula
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    Hi @jef ,

    In the next firmware version 1.35, USG FLEX H supports LAG over VLAN.

    Step 1. Create a LAG interface "lag0" and add members P13 and P14.

    Step 2. Create a VLAN interface and select LAG interface "lag0" as the member.   

    Scheduled release time: in the end of July. 

    To learn about enhancements, new features, and release dates, please follow the Firewall news & release.

    Zyxel_Judy

  • jef
    jef Posts: 107 image  Ally Member
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    Thank you

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