A Thread Border Router connects a Thread network to other IP-based networks, such as Wi-Fi or Ethernet.

A Thread Border Router supports the following functions:

• End-to-end IP connectivity via routing between Thread devices and other external IP networks.
• Bidirectional DNS-based service discovery via mDNS (on a Wi-Fi/Ethernet link) and SRP (on a Thread network).
• DHCPv6 Prefix Delegation to obtain IPv6 prefixes for a Thread network.
• NAT64 for connecting to IPv4 networks.
• External Thread Commissioning (for example, a mobile phone) to authenticate and join a Thread device to a Thread network.

OpenThread's implementation of a Border Router is called OpenThread Border Router (OTBR).

More information about Thread can be found at threadgroup.org. Thread is a registered trademark of the Thread Group, Inc.

The quickest way to set up a Thread-compliant Border Router is to follow the Raspberry Pi Setup guide.

Note: For users in China, end-user documentation is available at openthread.google.cn.

We would love for you to contribute to OpenThread Border Router and help make it even better than it is today! See our Contributing Guidelines for more information.

Contributors are required to abide by our Code of Conduct and Coding Conventions and Style Guide.

OpenThread Border Router is released under the BSD 3-Clause license. See the LICENSE file for more information.

Please only use the OpenThread name and marks when accurately referencing this software distribution. Do not use the marks in a way that suggests you are endorsed by or otherwise affiliated with Nest, Google, or The Thread Group.

OpenThread support is available on GitHub:

• Bugs and feature requests pertaining to the OpenThread Border Router — submit to the openthread/ot-br-posix Issue Tracker
• OpenThread bugs and feature requests — submit to the OpenThread Issue Tracker
• Community Discussion - ask questions, share ideas, and engage with other community members

To learn more about OpenThread, see the OpenThread repository.