OTBR registers a _meshcop._udp service named OpenThread BorderRouter. This
service is configured in the
OTBR CMakeLists.txt file.
The Thread Specification requires Thread Border Routers to publish the
_meshcop._udp service for the Thread Border Agent service. Thread Border
Router devices may publish other services that they implement but that is up
to each specific device and developer.
There are several ways to discover your Thread network.
DNS Service Discovery (DNS-SD)
Use dns-sd to browse for a service instances of type _meshcop._udp.:
dns-sd -B _meshcop._udp local
Browsing for _meshcop._udp.local DATE: ---Tue 16 Nov 2021--- 13:31:03.197 ...STARTING... Timestamp A/R Flags if Domain Service Type Instance Name 13:31:03.198 Add 2 6 local. _meshcop._udp. OpenThread BorderRouter (#3991)
Use dns-sd to resolve the service instance:
dns-sd -L "OpenThread BorderRouter (#3991)" _meshcop._udp local
Lookup OpenThread BorderRouter #(3991)._meshcop._udp.local DATE: ---Tue 16 Nov 2021--- 13:33:05.197 ...STARTING... 13:33:05.350 OpenThread\032BorderRouter\032(#3991)._meshcop._udp.local. can be reached at raspberrypi.local.:49155 (interface 3)
Use dns-sd to resolve the hostname:
dns-sd -G v4/v6 raspberrypi.local
DATE: ---Tue 16 Nov 2021--- 14:21:29.485 ...STARTING... Timestamp A/R Flags if Hostname Address TTL 14:21:29.486 Add 3 3 raspberrypi.local. FDDE:AD11:11DE:0000:74D0:6FC9:6BE6:3582%<0> 120 14:21:29.486 Add 3 3 raspberrypi.local. FD00:0000:0000:0000:74D0:6FC9:6BE6:3582%<0> 120 14:21:29.486 Add 3 3 raspberrypi.local. FE80:0000:0000:0000:74D0:6FC9:6BE6:3582%eth0 120 14:21:29.486 Add 3 3 raspberrypi.local. FE80:0000:0000:0000:287F:87CA:F4B3:498A%eth0 120 14:21:29.486 Add 2 3 raspberrypi.local. 192.168.0.10 120
Ping your IP address. From the dns-sd results, choose an address that's
reachable from your network, for example the global <0> address
FD00::74D0:6FC9:6BE6:3582:
ping -6 FD00::74D0:6FC9:6BE6:3582
PING FD00::74D0:6FC9:6BE6:3582(fd00::74d0:6fc9:6be6:3582) 56 data bytes 64 bytes from fd00::74d0:6fc9:6be6:3582: icmp_seq=1 ttl=64 time=27.1 ms 64 bytes from fd00::74d0:6fc9:6be6:3582: icmp_seq=2 ttl=64 time=3.18 ms 64 bytes from fd00::74d0:6fc9:6be6:3582: icmp_seq=3 ttl=64 time=2.76 ms
Avahi utilities
Install avahi-daemon and avahi-utils:
sudo apt-get install -y avahi-daemon avahi-utils
Start the avahi-daemon:
sudo service avahi-daemon start
Use avahi-browse:
avahi-browse -r -t _meshcop._udp
+ eth0 IPv6 OpenThread BorderRouter (#3991) _meshcop._udp local = eth0 IPv6 OpenThread BorderRouter (#3991) _meshcop._udp local hostname = [raspberrypi.local] address = [192.168.0.10] port = [49155] txt = []
mDNS apps
Search Google Play for mDNS discovery apps, for example:
- Service Browser for Android
- Discovery - DNS-SD Browser for iOS