Local Networks

Configure the LAN interface to set up local intranet networks.

Do not stop or delete the LAN (bar-lan) interface is the DHCP server of local networks and the cornerstone of Ethernet and Wi-Fi functions.

i. Configure IP Pool

To modify the DHCP configuration, you need to log in to the router admin, go to Network > Interfaces On the top menu. Click Edit on the row of LAN (local area network).

Configuration > General

In the section of Common Configuration > General Setup, you can modify the router IP address, netmask, gateway address, broadcast address, and DNS servers.

Field	Default	Description
IPv4 address	192.168.30.1	IP address that the router uses on the LAN network
IPv4 netmask	255.255.255.0	Netmask is used to define how “large” the LAN network is
IPv4 broadcast	N/A	Broadcast is used by DHCP clients to find and send requests to their respective servers

DHCP Server > General

Scroll down and find the section of DHCP server > General Setup, you can modify the DHCP IP pool and DHCP lease period.

The DHCP server can automatically configure connected devices' TCP/IP settings and lease out an IP address from the available IP pool.

To enable the DHCP server, unselect the checkbox of Ignore interface

If the DHCP server is disabled, we can only access the router with a static IP address. Below is an example of a static IP address. Ensure the gateway IP address and subnet mask address match the router configurations.

Static IP Settings Computer IP: 192.168.30.110 Subnet Mask: 255.255.255.0 (also called 24 on Windows) Gateway (Router IP): 192.168.30.1

Field	Default	Description
Start	100	The start of DHCP IP pool. For example, if the router’s LAN IP is 192.168.30.1 and netmask is 255.255.255.0, a valid IP address should be in the range of [192.168.30.0…192.168.30.254] * 192.168.30.255 is a special unavailable address.
Limit	150	Define the IP addresses the DHCP server can lease out. Continuing from the above example, if the start address is 192.168.30.100 and the server can lease out 150, available addresses will be from 192.168.30.100 to 192.168.30.249.
Lease time	12 hours	The duration of an IP lease. Leased-out addresses will expire after the specified period and have to request a new DHCP lease. If the device stays connected, its lease will be renewed after half of the specified amount of time passes. For example, if the lease time is 12 hours, then every 6 hours the device will send a request to the DHCP server asking to renew its lease. The lease time can be set in hours (h) or minutes (m). The minimal amount of time that can be specified is 2min (2m).

DHCP Server > Advanced

Under the tab of Advanced Settings, you can set up more configurations on the DHCP server.

Field	Default	Description
Dynamic DHCP	Enable	Enables dynamic allocation of client addresses. If disable it, you have to input static IP address on the connected devices.
Force	Disable	The DHCP force function ensures that the router will always start it’s DHCP server, even if there is another DHCP server already running in the router’s network. *** When connecting the router to another router via LAN cable, the outdoor router will turn to AP mode and obtain the IP address assigned from another router. You will be no longer able to access the EZR3X router at 192.168.30.1.
IPv4 Netmask	NA	Overrides the LAN netmask, thus making the DHCP server think that it’s serving a larger or smaller network than it actually is.
DHCP Options	NA	For example, with ‘26,1470’ or ‘option:mtu, 1470’ you can assign an MTU value per DHCP. You can add more options by clicking the plus symbol (Services sms gateway auto reply plus symbol.PNG) located next to the field.

ii. Physical LAN Interface

There are two physical RJ45 ports on the EZR33 router. LAN Ethernet is bind to the physical port eth1 by default, which also takes the DC power from the PoE adapter.

You can also bind another RJ45 port eth0 to the LAN interface, bound to the WAN interface by default. If you switch the LAN interface from eth0 to eth1, the PoE adapter will lose the Ethernet function on its LAN port.

iii. DHCP Leases

To check the active DHCP clients, you need to log in to the router admin, go to Network > DHCP & DNSScroll down and find the section of Active DHCP Leases.

Static Leases

Static IP leases reserve specific IP addresses to particular devices by binding them to their MAC address. It’s useful when having a stationary device connected to the network that needs to be reached frequently, such as a NAS, printer, camera, etc.

Field Name	Default Value	Description
Hostname	NA	A custom name that describes being linked device
MAC Address	NA	MAC address of the linked device
IPv4 Address	NA	The desirable IP address reserved for the specified device