Peter,
> > Question: Can I use UDABM to set bits in metrics for use with selective > > flex-algo topologies ? > > no, all flex-algo constraints are defined in the flex-algo draft. > That's news to me. And from what I am seeing not only to me. So I ask vendor X & Y to allow me to set 2 bits in UDABM (that already is not user defined but vendor defined, but ok). Then I signal some of the existing metric with bits set only in UDABM. And I specify to run Dijkstra on it. As a result I build a new topology and start forwarding traffic via it. So the only practical difference this topology has vs identical one buildl with flex-algo SABM bit is that I used a different bit to propagate the metric selectively for this topology (rather then sending it with X-bit and applying affinities all over the place). It seems that the current version of flex-algo draft has a bunch of hidden assumptions - maybe it is past WG last call - but I do ask to state explicitly there a sentence indicating that UDABM bits can not be used to signal metrics for it. I don't think this requires a new WG last call as this is purely clarification not a major change. Thx for sharing it ... Robert
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