> For the complete documentation index, see [llms.txt](https://indoor.router.works/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://indoor.router.works/manual/firmware/network-interfaces.md).

# Network Interfaces

## Interface Overview

After logging in to the router, click "Network > Interfaces" to view and manage the network interfaces, as shown below. The second column lists brief information on each interface. 

<figure><img src="/files/GDgXy1SrKlWQosWY5jCK" alt=""><figcaption><p>5G Router Local Network Interfaces</p></figcaption></figure>

### Explanation of Terms

**Protocol** – The communication rules and methods used for data transmission.

**Uptime** – The duration of the network interface's continuous operation since the last connection. H is hours, M is minutes, and S is seconds.

**MAC** – Short for Media Access Control, a unique hardware identification number assigned to each network interface, displayed as six pairs of hexadecimal digits.

**RX** – Received (download) packets. **TX** – Transmit (upload) packets. They indicate the real-time data stream instead of the internet speed.

**IPv4** – Short for Internet Protocol version 4

{% hint style="danger" %}
Do not click the "Restart" or "Stop" buttons unless necessary, as this will immediately stop or pause the transmission from internet sources or related data streams.
{% endhint %}

## Mobile (wwan0)

This is the interface of the 5G mobile modem.

Click the "**Edit**" button to change the mobile protocol, APN, SIM card, PIN code, etc. For more information, refer to the [Mobile Modem](/manual/firmware/mobile-modem.md) settings.

The 5G router automatically connects to the mobile network when started up. You can manually Restart or Stop the mobile modem when necessary by clicking the related buttons.

{% content-ref url="/pages/QUfndxIUjwXdrI2GRKFJ" %}
[Mobile Modem](/manual/firmware/mobile-modem.md)
{% endcontent-ref %}

## LAN (bar-lan)

This is the leading local intranet network interface assigned to the physical RJ45 LAN ports and logical Wi-Fi hotspots. To configure the local intranet networks, refer to the section below.

{% content-ref url="/pages/aOaQqkaQUdm0Z9bg8VK4" %}
[Local Networks](/manual/firmware/network-interfaces/local-networks.md)
{% endcontent-ref %}

## WAN (wan)

The WAN port is bound to the physical RJ45 WAN port marked "WAN" on the router's back panel.

The WAN interface has enabled the DHCP client protocol in default settings, which allows it to automatically obtain the IP address after connecting to the LAN port on an upstream internet router. You can use the PPPoE protocol when linking to a landline modem and turning on the bridge mode.

## WWAN\_2G/5G

WWAN stands for Wireless WAN (wireless wide area network). They are the virtual interfaces for wireless Wi-Fi relay connections on 2.4GHz and 5.8GHz frequency bands. To manage the Wi-Fi relay links, click "Hotspot > WiFi Hotspot."


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