Configuring LAN settings in Asuswrt-Merlin

For LAN IP Address and the corresponding subnet mask, pick one from the following private IP address ranges:

• 192.168.0.1 to 192.168.255.254 (subnet mask 255.255.0.0 for fixed first 2 numbers 192.168 in the available LAN IP addresses; subnet mask 255.255.255.0 for fixed first 3 numbers in the available LAN IP addresses)
• 172.16.0.1 to 172.31.255.254 (subnet mask 255.240.0.0, or 255.255.0.0, or 255.255.255.0)
• 10.0.0.1 to 10.255.255.254 (subnet mask 255.0.0.0 or 255.255.0.0 or 255.255.255.0)

For home network, using a subnet mask of 255.255.255.0 with 254 allocable IP addresses is sufficient.

If you want to allocate less usable IP addresses, you can refer to the subnet masks below:

• 255.255.255.128 (126 allocable IP addresses)
• 255.255.255.192 (62 allocable IP addresses)
• 255.255.255.224 (30 allocable IP addresses)
• 255.255.255.240 (14 allocable IP addresses)

Below is my LAN configuration for your reference:

• Enable the DHCP Server: Yes
• Hide DHCP/RA queries: No
• IP Pool Starting and Ending Address: for easier management, it is advisable to allocate this dynamic IP range to be different from the IP range used in manual assignment. Make sure this IP range is within the allocable IP addresses as defined by the subnet mask.
• Lease time: 86400 seconds
• Default gateway: the internal IP address of the router
• DNS Server: you can use the DNS servers of your ISP, or any of the public DNS servers below:
• Cloudflare: 1.1.1.1, 1.0.0.1
• FreeDNS: 45.33.97.5, 37.235.1.177
• Google: 8.8.8.8, 8.8.4.4
• Level3: 209.244.0.3, 209.244.0.4
• OpenDNS: 208.67.222.222, 208.67.220.220
• Quad9: 9.9.9.9, 149.112.112.112
• UncensoredDNS: 91.239.100.100, 89.233.43.71
• Verisign: 64.6.64.6, 64.6.65.6
• Advertise router's IP in addition to user-specified DNS: Yes
• Forward local domain queries to upstream DNS: No
• Enable DNSSEC support: No (unless you are sure your ISP and your DNS servers support this feature)
• Enable DNS Rebind protection: No (unless you are sure your ISP and your DNS servers support this feature)
• WINS Server: the internal IP address of the router
• Enable Manual Assignment: Yes

Note: For the hosts configured in the manual IP assignment table, you can edit their name and change their icon by clicking on their icon.

• Enable static routes: No (normally you don't need this, unless you have a complex network with several routers)
• IPTV: select the correct ISP Profile to auto-configure the IPTV settings for the corresponding ISP
• Switch Control:
• Enable Jumbo Frame: Disable
• Spanning-Tree Protocol: Enable