Template:Networking rut2xx manual setup wizard lan
LAN
The LAN section is used to configure the router's local area network (LAN) and DHCP server settings. A DHCP (Dynamic Host Configuration Protocol) server can automatically configure the TCP/IP settings for any device that requests such a service. If you connect a device that has been configured to obtain an IP address automatically, the DHCP server will lease out an IP address from the available IP pool and the device will be able to communicate within the router's private network.
[[File:{{{file_lan}}}]]
| Field | Value | Description |
|---|---|---|
| IP address | ip; default: 192.168.1.1 | The LAN interface's IPv4 address. An IP address identifies a device on a network and allows it to communicate with other devices |
| Netmask | netmask; default: 255.255.255.0 | A netmask is used to define how "large" a network is by specifying which part of the IP address denotes the network and which part denotes the device |
| IPv6 Prefix Length | ip; Default: 60 | Delegates a prefix length for this interface |
| ULA Prefix | ip; Default: " " | Prefix used for the Unique Local Address |
| DHCPv6 server | Enabled | Relayed | Disabled; default: Enabled | State of DHCPv6 server |
| RA server | Enabled | Relayed | Disabled; default: Enabled | State of Router Advertisement server |
| NDP server | Enabled | Relayed | Disabled; default: Enabled | State of the Neighbour Discovery Protocol server |
| Enable DHCP | off | on; default: on | Turns the DHCP server on or off |
| Start | integer [1..255]; default: 100 | The starting IP address value. e.g., if your router’s LAN IP is 192.168.1.1 and your subnet mask is 255.255.255.0 that means that in your network a valid IP address has to be in the range of [192.168.1.0..192.168.1.254] (192.168.1.255 is a special unavailable address). If the Start value is set to 100 then the DHCP server will only lease out addresses starting from 192.168.1.100 |
| Limit | integer [1..255]; default: 150 | How many addresses the DHCP server can lease out. Continuing from the example above: if the start address is 192.168.1.100 and the server can lease out 150 addresses, available addresses will be from 192.168.1.100 to 192.168.1.249 (100 + 150 – 1 = 249); this is because the first address is inclusive) |
| Lease time | interger [2..999999]; default: 12 | A DHCP lease will expire after the amount of time specified in this field and the device that was using the lease will have to request a new one. However, if the device stays connected, its lease will be renewed after half of the specified amount of time passes (e.g., if lease time is 12 hours, then every 6 hours the device will ask the DHCP server to renew its lease). The minimal amount of time that can be specified is 2 minutes |
| Units | Hours | Minutes; default: Hours | Lease time measuring units |
If you wish to set the router's LAN and DHCP settings later instead, you can do so via the Network → [[{{{name}}} LAN|LAN]] page.