# Local Networks

{% hint style="danger" %}
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.
{% endhint %}

## **i. Configure IP Pool** <a href="#ip-pool" id="ip-pool"></a>

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

### **Configuration > General** <a href="#general" id="general"></a>

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

<table><thead><tr><th width="187.33333333333331">Field</th><th width="155">Default</th><th>Description</th></tr></thead><tbody><tr><td>IPv4 address</td><td>192.168.10.1</td><td>IP address that the extender uses on the LAN network.</td></tr><tr><td>IPv4 netmask</td><td>255.255.255.0</td><td>Netmask is used to define how “large” the LAN network is.</td></tr><tr><td>IPv4 broadcast</td><td>N/A</td><td>DHCP clients use broadcast to find and send requests to their respective servers.</td></tr></tbody></table>

### **DHCP Server > General**  <a href="#dhcp" id="dhcp"></a>

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.&#x20;

To disable the DHCP server, you can select the checkbox of `Ignore interface`.

<table><thead><tr><th width="107.33333333333331">Field</th><th width="108">Default</th><th>Description</th></tr></thead><tbody><tr><td>Start</td><td>100</td><td><p>The start of the DHCP IP pool.</p><p>For example, if the extender’s LAN IP is 192.168.10.1 and the netmask is 255.255.255.0, a valid IP address should be in the range of [192.168.10.0…192.168.10.254]</p><p>* <em>192.168.10.255 is a particular unavailable address.</em></p></td></tr><tr><td>Limit</td><td>150</td><td><p>Define the IP addresses the DHCP server can lease out.</p><p>Continuing from the above example, if the start address is 192.168.10.100 and the server can lease out 150, available addresses will be from 192.168.10.100 to 192.168.10.249.</p></td></tr><tr><td>Lease time</td><td>12 hours</td><td><p>The duration of an IP lease. Leased-out addresses will expire after the specified period, and you must request a new DHCP lease.</p><p>If the device stays connected, its lease will be renewed after half of the specified amount of time passes.</p><p>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.</p><p>The lease time can be set in hours (h) or minutes (m). The minimum time that can be specified is 2min (2m).</p></td></tr></tbody></table>

### **DHCP Server > Advanced** <a href="#dhcp-advanced" id="dhcp-advanced"></a>

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

<table><thead><tr><th width="133.33333333333331">Field </th><th width="104">Default</th><th>Description</th></tr></thead><tbody><tr><td>Dynamic DHCP</td><td>Enable</td><td>Enables dynamic allocation of client addresses. If you disable it, you must input a static IP address on the connected devices.</td></tr><tr><td>Force</td><td>Disable</td><td><p>The DHCP force function ensures that the extender will always start its DHCP server, even if another DHCP server is already running in the extender’s network.</p><p>*** When connecting the extender to another router via LAN cable, the extender will turn to Slim-AP mode and obtain the IP address assigned from another router. You will no longer be able to access the extender at 192.168.10.1.</p></td></tr><tr><td>IPv4 Netmask</td><td>NA</td><td>Overrides the LAN netmask, thus making the DHCP server think it’s serving a larger or smaller network than it is.</td></tr><tr><td>DHCP Options</td><td>NA</td><td>For example, you can assign an MTU value per DHCP with ‘26,1470’ or ‘option:mtu, 1470’. You can add more options by clicking the plus symbol (Services SMS gateway auto-reply plus symbol.PNG) located next to the field.</td></tr></tbody></table>

## ii. Physical LAN Interface <a href="#lan-interface" id="lan-interface"></a>

There are two physical RJ45 ports on the EZR13 extender. LAN Ethernet is bound to the physical port `eth0` by default.&#x20;

You can also bind another RJ45 port `eth1` to the LAN interface, which takes the PoE adapter's DC power. If you switch the LAN interface from `eth0` to `eth1`, the PoE adapter will lose the WAN function on the LAN port.

## **iii. DHCP Leases** <a href="#dhcp-leases" id="dhcp-leases"></a>

To check the active DHCP clients, you need to log in to the extender admin, go to `Network` > `DHCP & DNS`Scroll 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.

<figure><img src="https://www.outdoorrouter.com/wp-content/uploads/EZR3X_DHCP-DNS_Static-Leases-1400x402.png" alt=""><figcaption></figcaption></figure>

<table data-header-hidden><thead><tr><th width="188.33333333333331">Field Name</th><th width="105">Default Value</th><th>Description</th></tr></thead><tbody><tr><td>Hostname</td><td>NA</td><td>A custom name that describe be linked device.</td></tr><tr><td>MAC Address</td><td>NA</td><td>MAC address of the linked device.</td></tr><tr><td>IPv4 Address</td><td>NA</td><td>The desirable IP address is reserved for the specified device.</td></tr></tbody></table>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://extender.router.works/ezr13/configuration/network-interfaces/local-networks.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.