Is there any data on packet duplication?

Mark Tinka mark.tinka at
Tue Jun 23 05:26:37 UTC 2020

On 23/Jun/20 07:21, Saku Ytti wrote:

> Metro: S1-S2-S3-S1
> PE1: S1
> PE2: S2
> Customer: S3
> STP blocking: ANY
> S3 sends frame, it is unknown unicast flooded, S1+S2 both get it
> (regardless of which metro port blocks), which will send it via PE to
> Internet.
> STP doesn't help, at all. Hope this helps.

In the above, is S3 part of the Metro-E ring, or simply downstream of S1
and S2?


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