On Mar 23, 2017, at 10:34, Amine Kherbouche <amine.kherbouche@6wind.com> wrote:

Olivier,

The best for me, is to have the possibility to recompile the MPLS kernel module with the new value the MAX_LABEL_STACK and then let our Segment Routing implementation read this value to determine what's feasible.

Yes but we still need a default value.
You have also to see the perf impact, now the current mpls entry size in linux kernel is under
a cache line, even using 12 stacked labels, we are always under a cache line but beyond
this value we're going to see performance issue.

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