Friday's Random Comment - About: Arista and FIB/RIB's

Nick Hilliard nick at
Fri Apr 29 20:25:14 UTC 2016

Baldur Norddahl wrote:
> With two uplinks that is highly unlikely to the point of being impossible.
> There is no topology change upstream that can cause a situation where it is
> not possible to do a high degree of aggregation of the full default free
> routing table before loading it in the FIB.

which is why I qualified this in a previous posting:

> The more paths you receive from different sources, the more likely it
> is that this list of 120k "superfluous" prefixes will converge
> towards zero.

Agreed that small numbers of paths are most unlikely to create the
conditions for this problem to occur.


More information about the NANOG mailing list