@Jioldihau39
To use a static IP address outside of the router's DHCP domain, it must be configured directly in the NAS by disabling automatic DHCP and entering the IP configuration fields. It must be chosen in the same subnet as the router (192.168.1.xxx), but outside the DHCP domain to avoid conflicts
To do this in the router, make an assigned DHCP address static. That is to say that it is definitively assigned to this device, but the decision is taken by the router (the device is still configured in DHCP, but it still receives the same address)
For example static IP address 192.168.1.170 the creation must be done manually in the NAS, not in the router. This address is in the domain of the router, but not in its DHCP area
There is nothing to configure in the router that will just serve this equipment normally
The user is then responsible for not assigning this address to several devices
The following actions must be performed:
- Enabling Static Network IP for Synology
- Enabling DMZ (Demilitarized Zone) on Synology
- Spanning Tree Activation
- Disabling IPv6
- Redirecting router input port to Synology input port
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