frame-lifetime, say what?

frame-lifetime (integer [0..4294967295]; Default: 0) Discard frames that have been queued for sending longer than frame-lifetime. By default, when value of this property is 0, frames are discarded only after connection is closed.

What time measurement is this considered? Milliseconds? Microseconds? Nano seconds?
What is your preferred value?

Frame-lifetime is 10ms.

Just a easy explanation is: if you set frame-lifetime=3, all packets that take more than 30ms to be delivered will be discarded.

Aha, so it’s in X times 10 milliseconds, very good to know. This answers my question and really helps me in writing a CPE setup script.