The Xavi X8821r router is a high-performance wireless router designed for home and small office use. It features dual-band wireless connectivity, allowing for speeds of up to 1200 Mbps. The router also includes four Gigabit Ethernet ports for wired connections and supports both IPv4 and IPv6 protocols. The Xavi X8821r also features a built-in firewall for increased security and supports multiple SSIDs and guest networks. It is easy to set up and manage through a web-based interface or a mobile app.

The X8821r+ is a router manufactured by the company Xavi that allows multiple devices to connect to a network and communicate with each other. It works by receiving data packets from devices and forwarding them to their intended destination. The router is assigned a unique IP address 192.168.1.1, which serves as its identifier on the network.

To access the router's settings and configure its functions, users can log in using a web browser and their admin and admin. Once logged in, users can customize various settings such as network name, password, and security protocols. They can also set up parental controls, prioritize bandwidth usage, and monitor network activity.