What is the most standard subnet length on internet
Grzegorz at Janoszka.pl
Tue Dec 23 07:49:00 CST 2008
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.
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