The MPLS WG Archive

[Calin Poenaru <calin@employees.org>]

Hello!

I have a question about the efficiency of the mechanism for connectivity
verification described in draft-harrison-mpls-oam-00: there is proposed
a scheme which is very similar with I.610 and (in my opinion) has the same
drawback - a time for detect and react too high.  In other words: the 10
seconds necessary for detect the unavailable state is far too long to
affect all the connections in the failed LSP. And more, the 20 seconds
(minimum) required for re-entering in the available state is too much to
be useful for the traffic (in this time the Control Plane probably already
take some actions like reroute or something else). Could you comment a
little bit about this issues? 

And another question: at 6.6.3 you stated that the exit from Far-End
Defect State is conditioned by 3 consecutive seconds without BDI OAM
packets. But what if an FDI OAM packet will come? It will not force the
exit from this state and go into Near-End Defect State?

Thank you in advance for your time!

Best regads,

Calin

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