Can the 10Gb/SPF+ Ports Auto-Negotiate lower link speeds?

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checkyourmirrors
checkyourmirrors Posts: 2 image  Freshman Member
in Switch

I am looking at getting the XGS1250-12 and three XMG-108's and my hope would be to use the 10Gb ports for up/downlinks. How IF my wiring distance is an issue will the port auto-negotiate down to 2.5Gb? or 1Gb?

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  • Zyxel_Melen
    Zyxel_Melen Posts: 4,467 image  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate
    edited November 2025

    Hi @checkyourmirrors

    If you connect these switches via SFP port, the wire distance should check the transceiver's limitation. If the distance over the max distance, the link will be down.

    Please reference the supported transceivers of XGS1250-12 and XMG-108 in below sheet:

    image.png
    Zyxel Melen


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