RE: fuzzy subnet aggregation

["Jakob Heitz \(jheitz\) via NANOG" <nanog () nanog org>]

Another thing to consider is how long it takes to download into forwarding hardware.
Forwarding hardware is optimized for forwarding, not programming.
The programming has to wait for time slots when forwarding is not using the memory.

When you do smart aggregation, a single changed route could cause a massive
change in your aggregates. Then the resulting download could be both long
and cause glitches. Glitches, because you remove some aggregates while adding
others within a finite time. During this finite time, you may have incorrect
routing.

Regards,
Jakob.