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DHCP Configuration Issue on Sophos XG 125 Firewall

Hi all, sorry for my english, I’m french.

When adding a separate Wireless Networks for Guests, I'm having a problem with the DHCP configuration on my Sophos XG125 Firewall and I'm hoping someone can help me.

Background : I created a different SSID in Separate Zone for guest access with a Sophos XG125 Firewall in my network with Sophos APX320 access points. I also configured DHCP service.

Problem : However, the devices do not appear to receive IP addresses. There are the details of my configuration :

  • IP address range: 10.17.10.50 to 10.17.10.100
  • Subnet Mask: 255.255.255.0
  • Gateway: 10.17.10.254
  • DNS Server: 8.8.8.8

What I tried :

  • Restart the DHCP service on the Sophos.
  • Using the previous firmware (SFOS 19.5.1 MR-2-Build624)
  • Test with a different device to see if the problem persists.
  • Restore to factory configuration (but same problem with default Guest SSID).

Questions :

  1. Are there any additional settings I should check ?
  2. Are there any logs on Sophos that could help me diagnose the problem ?
  3. Is this an existing bug due to the firmware/access points ?

Problems:

  • I have SFOS 19.5.2 MR-2-Build624 firmware and I can't update it (I don’t have a valid support subscription).

Thank you in advance for your help!

SSID Settings:

DHCP Settings:



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Parents
  • I found the problem. A switch was configured with several options (Jumbo frames, Storm Control, Auto DoS Features, Loop Protection and Spanning Tree). A factory reset fixed the problem. However, by default all these options are disabled, is this normal?

  • OK, thank you for reporting back, I think we can summarize this as "cabling/network-problem".

    Please mark this case as "solved", so others can benefit from this.

    Mit freundlichem Gruß, best regards from Germany,

    Philipp Rusch

    New Vision GmbH, Germany
    Sophos Silver-Partner

    If a post solves your question please use the 'Verify Answer' button.

Reply
  • OK, thank you for reporting back, I think we can summarize this as "cabling/network-problem".

    Please mark this case as "solved", so others can benefit from this.

    Mit freundlichem Gruß, best regards from Germany,

    Philipp Rusch

    New Vision GmbH, Germany
    Sophos Silver-Partner

    If a post solves your question please use the 'Verify Answer' button.

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