Run aes67-sender without PTP Master

[philhartung]

It is currently not possible to run aes67-sender without PTP master. RFC7273 allows to implement a ts-refclk:ptp=traceable which could be implemented to use aes67-sender without a PTP master.

[TheSashmo]

Maybe a dumb question, but how can we setup a PTP server for testing this out?

[philhartung]

You can use ptp4l under Linux. You can install ptp4l with sudo apt install linuxptp. To start the PTP Master simply execute sudo ptp4l -A -i eth0.

[TheSashmo]

Wow.... the fastest ever response in history..... Thanks.

I'm testing on a mac. Any suggestions for that?

[TheSashmo]

I've setup the ptp4l on a ubuntu 20 machine. Running that on the multicast inerface. "I have two interfaces, one local network and one multicast network" I can run the application i.e. sudo ptp4l -A -i enp3s0 and I am running stream monitor on my mac pointed to the secondary interface i.e. multicast.... And I am trying to run AES sender on the same machine to see if I can see my own audio device on stream monitor, but I keep getting and error.

$ sudo node aes67 -v -d 11 -c 1 -n test --address 10.2.0.67 Selected CoreAudio as audio api Selected device Apple Inc.: iMac Pro Microphone with 1 input channels Selected 239.69.0.67 as RTP multicast address. Opening audio stream. Trying to sync to PTP master. Could not sync to PTP master. Aborting.