[j-nsp] Suggestions for Edge/Peering Router..

[Saku Ytti]

On Thu, 19 Sep 2019 at 14:22, <adamv0025 at netconsultings.com> wrote:

> Just a few examples when you change export policy it resets the peer or the cockup with RR clearing all sessions or the fact BGP is part of very complex RDP monolith -to me that's not really "carrier grade" implementation

This happens when export policy breaks update-group. It may sometimes
be difficult for operator to understand if it will do that or not, so
it's fair concern. Perhaps system should not clear, but tell manual
clear is needed for policy change to take effect.

If monolith is good or bad, I'm not sure. If you thread you have high
performance with some risk. If you have process separation you have
IPC problem, and you have low performance and many will solve this by
duplicating state. Junos is moving towards multi process model with
Junos Evolved, if this will be positive or negative direction remains
to be seen.

Operationally speaking, BGP in JunOS for us works great, on IOS-XR
right now we have sessions where policy isn't what is configured and
there is no way to verify which one, and we've propagated leaks
because acting configuration isn't the one we've configured. We've not
had similar problems in JunOS. This is anecdote, not data.



-- 
  ++ytti