Nathan Ward wrote:
Let me rephrase; Are there people who are filtering /24s received from
eBGP peers who do not have a default route?
of course.
Curiously, it was really meant as a rhetorical question where the answer
was "no".
Why are people doing this? Are they lacking clue, or, is there some
reasonable purpose?
Memory mostly I think. /24 prefixes are ~ the half of all prefixes, but
they cover only a small percent of the address space.
If your router has > 6 full BGP sessions, you can filter /24 on half of
them, your memory usage will drop significantly.
--
Grzegorz Janoszka
Leaseweb
