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DHCP - static adress does not work any more

MaxKast

Dear all,

yesterday i added two new network devices, a raspberry pi and a fritz-cable-thing from avm.
I added the MAC in my default DHCP-Server, like i did it 38 times bevor.

But now, it will not work. Both deviced get an IP from the dynamic-range.

I run on home edition SFOS 16.05.3 MR-3.

 

In the last week, i added a second DHCP for my Guest WLAN.
In this DHCP i configured an WLAN-AP, that runs bevor in the default-DHCP. So i delete the MAC in die default-DHCP and add the MAC new in the Guest DHCP.
Here it is the same, the device get only an dynamic-IP.

To use the second DHCP i run "system dhcp static-entry-scope global" in the console.

My devices:

My DHCP:

Two of the dynamic-adresses:

Role in the firewall:

What did i configured wrong?

Why didn't get the devices a static IP?

 

greetings

rené



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  • 0

    hi rene,

     

    One of my former client is also encountering this issue, we already raised a ticket for this, it was way back September 2016, as per my last update the issue is not been resolved up to now. 

     

    P.S.

    I am no longer part of the professional services company to that client, they are just momentarily updating me of the status of the case.

     

     

    Regards,

     

    Rap

  • 0

    HI Rene ,

    Could you let us know where have you added the Static DHCP entry and if you added on VLAN , it may not work as the address would be broadcast to the DHCP server which is XG in this case and will arrive to interface address. Make sure the Static entry would not have any DHCP interface mentioned . This should resolve your issue.

  • 0 in reply to Aditya Patel

    Hi Aditya

     

    the default-DHCP:

     

    The VLAN-DHCP:

     

    Every MAC-Association to a DHCP (default or VLAN) is unique.
    No device is registred twice.

     

    I made a test and delete the VLAN-DHCP and the interface/zone, restart the XG and wait. The new device is getting a dynamic IP and not a static IP. 

     

    Now i made a new test, and everything function correct - i am confused...

    I will take a view, what happens in the future.

    So close case momentary.

     

    greetings rené

  • 0 in reply to MaxKast

    The problem is back...

    The assignement in default-DHCP:

     

    The given dynmic adress:

     

    Today i add one new device, first assign the MAC in the default-DHCP. Connect the device, everything is right -> a static adress.

    Now connect a new device from weekend, and the assignment is wrong. Look at the pictures above.

     

    greetings rené

  • 0 in reply to MaxKast

    HI MaxKast ,

    Could you test with the Interface set to NONE . this should resolve your issue .

  • 0 in reply to Aditya Patel

    Hi Aditya,

    that is not possible...

    I can change the interface to "none" in the default DHCP-server.

    And when i save the changed configuration, i become the correct answer of the XG: 

     

    But nothing happens.

    When i step into the configuration of the DHCP, the Interface is there again.

    It's the same, in the VLAN-DHCP.

     

    Greetings

    rené

  • 0 in reply to MaxKast

    Hi,

     

     

    We are experiencing the same issue since September 2016.

    I think there is a problem with the dhcp scope configuring it to Global. Other network can get dhcp leases  but static IP mac binding doesn't work.

    We had followed steps on this link because we have the same environment as the example. It somehow works on other networks getting dhcp leases but for static IP mac binding it didn't.

    community.sophos.com/.../123952

     

    Regards,

    Chris

  • 0

    hi,

     

    can we please verify if this is a known issue in SFOS? this occured in v15 and still intact after upgrading to v16

     

    Regards,

  • +1

    Hi all,

    i found a silly workaround.

    1. Go to the CLI-console and set "system dhcp static-entry-scope network".
      You could test the changes with "system dhcp static-entry-scope show".
    2. Reboot the XG.
    3. Enter the MAC of the new device in the DHCP, at my XG it is in the default DHCP.
    4. Boot / start the new device.
      The device get a static IP-adress.
    5. If nessesary, run number 3./4. for more new devices.
    6. After the last new device, reboot the XG.
    7. Go to the CLI-console and set DHCP back to "system dhcp static-entry-scope global".
      You could test the changes with "system dhcp static-entry-scope show".
    8. Reboot the XG.

    This works with my XG and 2 devices, wich gets a dynamic IP-adress although they had a entry in the default-DHCP with correct MAC.

     

    greetings

    rené