Thanks you! ... View more

All Z and MX devices will only use the static configuration if it works.  If it doesn't work they revert back to DHCP.   So if it appears to be losing that configuration, it's because it didn't work when the device attempted to use it. ... View more

ok i will contact support to see what they will say . ... View more

Thanks a lot for your answers . I'll see the operator then. Thank you for your help ... View more