> Nfdump has been working fantastically for us until we upgraded to 1:1 with
> an MS-MPC.  It appears the MS-MPC on MX routers only support V9, and they
> don't support aggregation.
> 
> Everything was fine with Verison 5 Route Engine sampling.  Now, at full
> blown 1:1 sampling via MS-MPC, everything is way off.  It starts out ok but
> quickly gets out of sync after a few minutes.  I read an earlier thread
> about this being the way Juniper exports flows but doesn't remove them from
> the table.
> 
> Is this only a version 9 thing?  Is there something I can do to timers?  It
> seems silly to get the ms-mpc only to get locked out of reliable reports
> due to the way v9 on Junos is exported.  Does anyone have any experience
> with this?

We use inline IPfix on Juniper Trio cards (MPC-3D-16XGE-SFPP, MX-MPC2-3D
etc) with 1:100 sampling. No MS-MPC. Seems to work for us. We never
needed or wanted 1:1.

Steinar Haug, AS 2116

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