I've had two private replies, both of which suggest that

PBB has little to no share in the overall pie of the aggregation technology space,

nor in the overall pie of the core technology space.

However, a third correspondent states that Bard (Google's "Chat-based AI tool") claims that

PBB is deployed by AT&T, Verizon, China Mobile, Deutsche Telecom and Comcast.

This correspondent warns that Bard "could be hallucinating" :)

Any further data points/insight would be appreciated.

Cheers,

Etienne

On Wed, Aug 23, 2023 at 10:43 AM Etienne-Victor Depasquale <edepa@ieee.org> wrote:

Hello folks,

Based on data I've gathered through quantitative and qualitative surveying,
I can detect no application of Provider Backbone Bridging (MAC-in-MAC).
Please bear with me while I clarify that I am not enquiring about Provider Bridging (QinQ).

I would like to ask specifically about knowledge of deployments of PBB.
If anyone would care to share data points, on- or off-list, I would love to know about them.
I am open to anything on the subject of PBB's adoption that you are free to share with me.
I am bound by GDPR and will anonymize any data that is not open for public disclosure.

Thank you!

Etienne

--
Ing. Etienne-Victor Depasquale