# Network Interfaces After logging in to the router, go to `Network` > `Interfaces` To view and manage the network interfaces. The brief information of each interface is listed under the second column, including MAC address, Rx (Download), Tx (Upload), Uptime, and IP address.

Overview of Network Interfaces

{% hint style="danger" %} Do not `Stop` use the LAN interface or `Delete` any of the interfaces. \ It will make the router misfunctioning. {% endhint %} {% hint style="info" %} * The color on each interface does not correspond to its connection status. * Rx/Tx indicates the real-time data stream instead of the speed of the internet or intranet. {% endhint %} ### ### Mobile\_4 (wwan0) This is a virtual interface that only appears when the `Mobile (wwan0)` interface is using `QMI protocol` and connected to mobile internet networks. You can find the IP address obtained by the mobile modem on the row of `IPv4`. The `Uptime` the lasting connection period with the mobile network depends on the timeout period released from the mobile carrier. ### ### LAN (bar-lan) This is the physical interface of the local intranet network. It is assigned to the physical RJ45 port eth1 by default, with the PoE power input. Refer to the below section to configure the local intranet networks. {% content-ref url="/pages/3hNVwx1Mursp7JqQiQeO" %} [Local Networks](/ezr33/configuration/network-interfaces/local-networks.md) {% endcontent-ref %} ### Mobile (wwan0) This interface is bound to the physical mobile modem. On the row of `SIM`, you can find the current working SIM card. The `QMI` row indicates the mobile operator, mobile network, and signal strength (dBm). If it's showing `UNKNOWN`, no SIM card or SIM card is installed incorrectly. The 4G router automatically connects to the mobile network when started up, and you can manually Stop or Connect the 4G modem by clicking the related buttons. After successfully connecting to the 4G network, Rx/Tx shows the real-time data stream and shows the IPv4 IP address obtained from the mobile carrier. The IP address shows on the Mobile\_4 interface using the default QMI protocol. {% content-ref url="/pages/VhO6vXdYnJ2e66ABWxkQ" %} [Mobile Modem](/ezr33/configuration/mobile-modem.md) {% endcontent-ref %} ### WAN (eth0) The `WAN` port is bound to the `eth0` RJ45 port by default. To input the WAN Internet signal from the PoE port into the EZR33 router, you can bind `eth1` to the WAN port on the `WAN` > `physical settings`. `DHCP client protocol` Is enabled on the WAN interface, and it can automatically obtain the IP address after being connected to the LAN port on the internet router or landline modem. ### WWAN (Wi-Fi Client) This is the virtual interface for the Wi-Fi relay connection. The WWAN interface will appear after successfully connecting the EZR33 router to another Wi-Fi master hotspot. {% content-ref url="/pages/VbWShYlr3ADv8T37VTAm" %} [Wi-Fi Hotspot](/ezr33/configuration/wi-fi-hotspot.md) {% endcontent-ref %} --- # 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://outdoor.router.works/ezr33/configuration/network-interfaces.md?ask= ``` 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.