Re: [Lsr] My comment on https://datatracker.ietf.org/doc/html/draft-wang-lsr-flex-algo-link-loss-00

Hi Sasha,

FYI, packet loss for a link can be measured using the procedure defined in
the following draft, including direct measurement for customer traffic.

https://www.ietf.org/archive/id/draft-ietf-spring-stamp-srpm-10.html

The draft can refer to the above reference if it helps.

thanks,
Rakesh

On Mon, Nov 6, 2023 at 11:15 AM Alexander Vainshtein <
Alexander.Vainshtein@rbbn.com> wrote:

> Hi,
>
> Just repeating my comment at the mike:
>
>
>
> *The draft does not explain how packet loss on a link is measured.*
>
>
>
> If this measurement is based on real traffic, excluding the link from the
> topology for certain flexible algorithms may result in the packet loss
> going down and the link becoming eligible for traffic again.
>
>
>
> For this scheme to work, link loss measurement should be done in a way
> that does not depend on the amount of customer traffic crossing the link.
>
>
>
> I also think that, even with such a scheme, some kind of hysteresis
> mechanism is required to prevent link being frequently excluded and
> admitted back if the packet loss rate fluctuates around the threshold level,
>
>
>
>
>
> My 2c,
>
> Sasha
>
>
>
>
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