Run OTBR Docker
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OpenThread Border Router (OTBR) requires a Thread RCP node in order to join a Thread network. OTBR Docker provides support for both a physical RCP (OpenThread dongle) or a simulated RCP.

Attach the RCP

Use any supported OpenThread platform for the physical RCP. See the Build and flash RCP step from the OpenThread Border Router Build and Configuration guide for more information.

After building and flashing, attach the RCP device to the machine running OTBR Docker via USB.
Determine the serial port name for the RCP device by checking /dev:
```
ls /dev/tty*
/dev/ttyACMO
```

Create an OTBR environment file

Create a otbr-env.list file to store OTBR Docker environment variables.

OT_RCP_DEVICE=spinel+hdlc+uart:///dev/ttyACM0?uart-baudrate=1000000
OT_INFRA_IF=wlan0
OT_THREAD_IF=wpan0
OT_LOG_LEVEL=7

OT_RCP_DEVICE: Specifies the connection to the Thread Radio Co-Processor (RCP).
OT_INFRA_IF: The network interface used for the adjacent infrastructure network (typically Wi-Fi or Ethernet).
OT_THREAD_IF: The network interface name used for the Thread network.
OT_LOG_LEVEL: The verbosity level of logs generated by OpenThread.

Start the OTBR Docker container

Create and run a new container from the OTBR image.

docker run --name=otbr --detach --network=host --cap-add=NET_ADMIN --device=/dev/ttyACM0 --device=/dev/net/tun --volume=/var/lib/otbr:/data --env-file=otbr-env.list --restart=always openthread/border-router

docker run: The base command for running a Docker container.
--name=otbr: Assigns the name "otbr" to the running container. This makes it easier to refer to the container later for actions like stopping, starting, or inspecting it.
--detach: Runs the container in detached mode, meaning it runs in the background and doesn't attach the terminal to the container's standard input, output, or error streams.
--network=host: Makes the container use the host machine's network stack directly. This is often necessary for OTBR, as it needs to have direct access to network interfaces.
--cap-add=NET_ADMIN: Grants the container the NET_ADMIN capability. This is necessary for the container to perform network administration tasks, such as configuring network interfaces and routing.
--device=/dev/ttyACM0: Maps the host's /dev/ttyACM0 device into the container. This is typically the serial port connected to the Thread Radio Co-Processor (RCP). The specific device name (ttyACM0) might vary depending on your system.
--device=/dev/net/tun: Maps the host's /dev/net/tun device into the container. This is necessary for creating and using virtual network interfaces, which are used by OTBR.
--volume=/var/lib/otbr:/data: Mounts the host directory /var/lib/otbr into the container at /data. This allows the container to persist data, such as network configuration, even when the container is stopped or restarted.
--env-file=otbr-env.list: Reads environment variables from the specified file and sets them within the container. These environment variables are likely configuration parameters for the OTBR.
--restart=always: Configures the Docker daemon to automatically restart the container if it stops. This ensures that the OTBR is always running. openthread/border-router: This specifies the Docker image to use for the container. In this case, it's the official OpenThread Border Router image.

Run `ot-ctl`

ot-ctl is a command-line utility that provides a way to interact with an OpenThread Border Router (OTBR) or an OpenThread device. It allows you to control and monitor the OpenThread network from your host machine.

To run ot-ctl:

docker exec -it otbr ot-ctl

Use the help command to view the list of available commands:

help
attachtime
ba
bbr
br
bufferinfo
ccathreshold
channel
child
childip
childmax
...

View Docker logs

Use the following command on the host to view logs:

docker logs otbr

If OTBR is running successfully, you should have output similar to this:

s6-rc: info: service mdns: starting
s6-rc: info: service s6rc-oneshot-runner: starting
Starting mDNSResponder...
Default: mDNSResponder (Engineering Build) (Mar 26 2025 19:39:09) starting
s6-rc: info: service mdns successfully started
s6-rc: info: service s6rc-oneshot-runner successfully started
s6-rc: info: service fix-attrs: starting
s6-rc: info: service fix-attrs successfully started
s6-rc: info: service legacy-cont-init: starting
s6-rc: info: service legacy-cont-init successfully started
s6-rc: info: service otbr-agent: starting
Configuring OpenThread firewall...
Configuring OpenThread NAT64...
Starting otbr-agent...
[NOTE]-AGENT---: Running 0.3.0-da4b5cf
[NOTE]-AGENT---: Thread version: 1.4.0
[NOTE]-AGENT---: Thread interface: wpan0
[NOTE]-AGENT---: Radio URL: spinel+hdlc+uart:///dev/ttyACM0?uart-baudrate=1000000
[NOTE]-AGENT---: Radio URL: trel://wlan0
[NOTE]-ILS-----: Infra link selected: wlan0
[INFO]-RCP_HOS-: OpenThread log level changed to 5
49d.18:38:43.301 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:0, cmd:RESET
49d.18:38:43.301 [D] P-SpinelDrive-: Waiting response: key=0
49d.18:38:43.311 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:0, cmd:PROP_VALUE_IS, key:LAST_STATUS, status:RESET_POWER_ON
49d.18:38:43.311 [I] P-SpinelDrive-: co-processor reset: RESET_POWER_ON
49d.18:38:43.311 [C] P-SpinelDrive-: Software reset co-processor successfully
49d.18:38:43.311 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_GET, key:PROTOCOL_VERSION
49d.18:38:43.311 [D] P-SpinelDrive-: Waiting response: key=1
49d.18:38:43.312 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_IS, key:PROTOCOL_VERSION, major:4, minor:3
49d.18:38:43.312 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_GET, key:NCP_VERSION
49d.18:38:43.312 [D] P-SpinelDrive-: Waiting response: key=2
49d.18:38:43.313 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_IS, key:NCP_VERSION, version:OPENTHREAD/7a25828-dirty; NRF52840; Mar 25 2025 15:51:02
49d.18:38:43.313 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_GET, key:CAPS
49d.18:38:43.313 [D] P-SpinelDrive-: Waiting response: key=5
49d.18:38:43.314 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_IS, key:CAPS, caps:COUNTERS UNSOL_UPDATE_FILTER 802_15_4_2450MHZ_OQPSK CONFIG_RADIO MAC_RAW RCP_API_VERSION RCP_MIN_HOST_API_VERSION OPENTHREAD_LOG_METADATA 
49d.18:38:43.376 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_GET, key:HWADDR
49d.18:38:43.376 [D] P-RadioSpinel-: Wait response: tid=1 key=8
49d.18:38:43.376 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:1, cmd:PROP_VALUE_IS, key:HWADDR, eui64:f4ce3693ab886040
49d.18:38:43.376 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:2, cmd:PROP_VALUE_GET, key:RCP_API_VERSION
49d.18:38:43.376 [D] P-RadioSpinel-: Wait response: tid=2 key=176
49d.18:38:43.377 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:2, cmd:PROP_VALUE_IS, key:RCP_API_VERSION, version:11
49d.18:38:43.377 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:3, cmd:PROP_VALUE_GET, key:RCP_MIN_HOST_API_VERSION
49d.18:38:43.377 [D] P-RadioSpinel-: Wait response: tid=3 key=177
49d.18:38:43.378 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:3, cmd:PROP_VALUE_IS, key:RCP_MIN_HOST_API_VERSION, min-host-version:4
49d.18:38:43.378 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:4, cmd:PROP_VALUE_GET, key:RADIO_CAPS
49d.18:38:43.378 [D] P-RadioSpinel-: Wait response: tid=4 key=4619
49d.18:38:43.379 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:4, cmd:PROP_VALUE_IS, key:RADIO_CAPS, caps:255
49d.18:38:43.410 [D] P-Trel--------: platformTrelInit(aTrelUrl:"trel://wlan0")
49d.18:38:43.410 [D] P-Trel--------: otSysTrelInit(aInterfaceName:"wlan0")
[DEBG]-TrelDns-: Initialized on netif "wlan0"
[DEBG]-TrelDns-: Netif wlan0 is ready: index = 3
49d.18:38:43.411 [I] P-Netif-------: Sent request#1 to set addr_gen_mode to 1
00:00:00.000 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:5, cmd:PROP_VALUE_GET, key:PHY_CHAN_SUPPORTED
00:00:00.000 [D] P-RadioSpinel-: Wait response: tid=5 key=34
00:00:00.001 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:5, cmd:PROP_VALUE_IS, key:PHY_CHAN_SUPPORTED, channelMask:0x07fff800
00:00:00.001 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:6, cmd:PROP_VALUE_SET, key:PHY_ENABLED, enabled:1
00:00:00.001 [D] P-RadioSpinel-: Wait response: tid=6 key=32
00:00:00.003 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:6, cmd:PROP_VALUE_IS, key:PHY_ENABLED, enabled:1
00:00:00.003 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:7, cmd:PROP_VALUE_SET, key:MAC_15_4_PANID, panid:0xffff
00:00:00.003 [D] P-RadioSpinel-: Wait response: tid=7 key=54
00:00:00.003 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:7, cmd:PROP_VALUE_IS, key:MAC_15_4_PANID, panid:0xffff
00:00:00.003 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:8, cmd:PROP_VALUE_SET, key:MAC_15_4_SADDR, saddr:0x0000
00:00:00.003 [D] P-RadioSpinel-: Wait response: tid=8 key=53
00:00:00.004 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:8, cmd:PROP_VALUE_IS, key:MAC_15_4_SADDR, saddr:0x0000
00:00:00.004 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:9, cmd:PROP_VALUE_GET, key:PHY_RX_SENSITIVITY
00:00:00.004 [D] P-RadioSpinel-: Wait response: tid=9 key=39
00:00:00.005 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:9, cmd:PROP_VALUE_IS, key:PHY_RX_SENSITIVITY, sensitivity:-100
00:00:00.005 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:10, cmd:PROP_VALUE_SET, key:RCP_MAC_KEY, keyIdMode:8, keyId:1, prevKey:***, currKey:***, nextKey:***
00:00:00.005 [D] P-RadioSpinel-: Wait response: tid=10 key=2048
00:00:00.007 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:10, cmd:PROP_VALUE_IS, key:LAST_STATUS, status:OK
00:00:00.007 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:11, cmd:PROP_VALUE_SET, key:MAC_15_4_LADDR, laddr:a2566e135ad5df32
00:00:00.007 [D] P-RadioSpinel-: Wait response: tid=11 key=52
00:00:00.008 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:11, cmd:PROP_VALUE_IS, key:MAC_15_4_LADDR, laddr:a2566e135ad5df32
00:00:00.008 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:12, cmd:PROP_VALUE_SET, key:MAC_15_4_SADDR, saddr:0xfffe
00:00:00.008 [D] P-RadioSpinel-: Wait response: tid=12 key=53
00:00:00.009 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:12, cmd:PROP_VALUE_IS, key:MAC_15_4_SADDR, saddr:0xfffe
00:00:00.009 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:13, cmd:PROP_VALUE_SET, key:MAC_SRC_MATCH_SHORT_ADDRESSES, saddr:none
00:00:00.009 [D] P-RadioSpinel-: Wait response: tid=13 key=4868
00:00:00.010 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:13, cmd:PROP_VALUE_IS, key:LAST_STATUS, status:OK
00:00:00.011 [D] P-SpinelDrive-: Sent spinel frame, flg:0x2, iid:0, tid:14, cmd:PROP_VALUE_SET, key:MAC_SRC_MATCH_EXTENDED_ADDRESSES, extaddr:none
00:00:00.011 [D] P-RadioSpinel-: Wait response: tid=14 key=4869
00:00:00.012 [D] P-SpinelDrive-: Received spinel frame, flg:0x2, iid:0, tid:14, cmd:PROP_VALUE_IS, key:LAST_STATUS, status:OK
00:00:00.012 [I] CslTxScheduler: Set frame request ahead: 6200 usec
00:00:00.012 [I] ChildSupervsn-: Timeout: 0 -> 190
00:00:00.013 [D] P-Trel--------: PrepareSocket()
[DEBG]-TrelDns-: Start browsing _trel._udp services ...
00:00:00.013 [I] TrelInterface-: Enabled interface, local port:52346
00:00:00.013 [I] RoutingManager: Initializing - InfraIfIndex:3
00:00:00.013 [I] InfraIf-------: Init infra netif 3
00:00:00.013 [N] RoutingManager: No valid /48 BR ULA prefix found in settings, generating new one
00:00:00.038 [I] Settings------: Saved BrUlaPrefix fd92:6043:f0e2::/48
00:00:00.038 [N] RoutingManager: BR ULA prefix: fd92:6043:f0e2::/48 (generated)
00:00:00.038 [I] RoutingManager: Generated local OMR prefix: fd92:6043:f0e2:1::/64
00:00:00.038 [I] RoutingManager: Generated local NAT64 prefix: fd92:6043:f0e2:2:0:0::/96
00:00:00.038 [N] RoutingManager: Local on-link prefix: fdde:ad00:beef:cafe::/64
00:00:00.038 [I] InfraIf-------: State changed: NOT RUNNING -> RUNNING
00:00:00.038 [I] RoutingManager: Enabling
00:00:00.038 [I] Nat64---------: IPv4 CIDR for NAT64: 192.168.255.0/24 (actual address pool: 192.168.255.1 - 192.168.255.254, 254 addresses)
[INFO]-UTILS---: Set state callback: OK
00:00:00.039 [I] Nat64---------: NAT64 translator is now NotRunning
[DEBG]-TrelDns-: mDNS Publisher is Ready
[INFO]-TrelDns-: TREL DNS-SD Is Now Ready: Netif=wlan0(3), SubscriberId=1, Register=!
[INFO]-MDNS----: Subscribe service ._trel._udp (total 1)
[INFO]-MDNS----: DNSServiceBrowse _trel._udp
[INFO]-BA------: Start Thread Border Agent
[INFO]-ADPROXY-: Started
[INFO]-DPROXY--: Started
[INFO]-APP-----: Co-processor version: OPENTHREAD/7a25828-dirty; NRF52840; Mar 25 2025 15:51:02
00:00:00.039 [I] Notifier------: StateChanged (0x40038210) [MLAddr NetData PanId NetName ExtPanId Nat64]
00:00:00.041 [I] Platform------: Execute command `ipset flush otbr-ingress-allow-dst-swap` = 0
00:00:00.042 [I] Platform------: Execute command `ipset flush otbr-ingress-deny-src-swap` = 0
00:00:00.044 [I] Platform------: Execute command `ipset add otbr-ingress-deny-src-swap fdde:ad00:beef:0::/64 -exist` = 0
00:00:00.046 [I] Platform------: Execute command `ipset swap otbr-ingress-deny-src-swap otbr-ingress-deny-src` = 0
00:00:00.047 [I] Platform------: Execute command `ipset swap otbr-ingress-allow-dst-swap otbr-ingress-allow-dst` = 0
00:00:00.047 [I] P-Netif-------: NAT64 CIDR updated to 192.168.255.0/24.
00:00:00.047 [I] P-Netif-------: Sent request#2 to delete route 192.168.255.0/24
00:00:00.047 [I] P-Netif-------: Deleting route for NAT64
00:00:00.047 [I] RouterTable---: Route table
00:00:00.047 [I] TrelInterface-: Registering DNS-SD service: port:52346, txt:"xa=a2566e135ad5df32, xp=dead00beef00cafe"
[DEBG]-TrelDns-: Register _trel._udp service: port=52346, TXT=24 bytes
[DEBG]-TrelDns-: Using instance name a2566e135ad5df32
[INFO]-MDNS----: Registering service a2566e135ad5df32._trel._udp
00:00:00.058 [I] Settings------: Saved BorderAgentId {id:27a9a3c44dd733402e8a940a20fc1051}
[INFO]-BA------: Result of decoding MeshCoP TXT data from OT: OK
[INFO]-BA------: Publish meshcop service OpenThread BorderRouter #DF32._meshcop._udp.local.
[INFO]-MDNS----: Registering service OpenThread BorderRouter #DF32._meshcop._udp
00:00:00.059 [I] P-Netif-------: Host netif is down
00:00:00.059 [I] P-Netif-------: Succeeded to process request#1
00:00:00.060 [W] P-Netif-------: Failed to process request#2: No such process
s6-rc: info: service otbr-agent successfully started
...

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