Set a Static IP MAC mapping RED

Hello Carlos,

Thank you for contacting the Sophos Community.

Take a look at this KB.

Regards,

Hi,

I followed the instructions in that KB, and I have an unexpected result:

I have 2 Reds (A and B).

Disabled the default DHCP server for red A;
Create a new DHCP server for red A;
Disabled the default DHCP server for red B;
Create a new DHCP server for red B;
Noticed that the other red (B) was missing from interfaces…

Disabled the newly created DHCP servers for red A and B;
Enabled the default DHCP servers for red A and B;
Red B still missing from interfaces;

Reboot the firewall to see if the missing red appears again – lost connection to the firewall - only could connect using serial cable.

At this point I created a case with support, and after additional testing, go for a reimage of the device and backup restore.

As I read here  it is not possible to have 2 DHCP servers for 1 red - but as it is it the KB should state this clearly, not "Disable or delete the default RED DHCP server that was automatically created when a RED interface is created."

this is (partly) a known bug.

https://community.sophos.com/sophos-xg-firewall/f/discussions/130164/red-list-disappears-with-more-than-one-dynamic-dhcp-range-configured

lost connection to the firewall - only could connect using serial cable - there is an other bug with RED 50 and RED 60

community.sophos.com/.../xgs2300-sfos-18-5-1-mr-1-build326-crash-unrepsonsive-firewall-in-ha-when-changing-red-interface

if you have a HA, you need to shutdown the aux peer before changing  such a RED device.

Lot's fun with RED's, eh?

this is (partly) a known bug.

https://community.sophos.com/sophos-xg-firewall/f/discussions/130164/red-list-disappears-with-more-than-one-dynamic-dhcp-range-configured

lost connection to the firewall - only could connect using serial cable - there is an other bug with RED 50 and RED 60

community.sophos.com/.../xgs2300-sfos-18-5-1-mr-1-build326-crash-unrepsonsive-firewall-in-ha-when-changing-red-interface

if you have a HA, you need to shutdown the aux peer before changing  such a RED device.

Lot's fun with RED's, eh?