What is the most standard subnet length on internet

Seth Mattinen sethm at rollernet.us
Mon Dec 22 18:31:52 CST 2008


정치영 wrote:
> Hi all, 
> 
> I appreciate many people gave me advices,
> Some of persons asked me about my questions, I'm sorry for that I couldn't reply to everyone.
> Because of your help, I could get many opinions and standards regarding IP allocation policy.
>  
> by the way, in APNIC's IP allocation sizes policy, there is a comments like below.
> "Below are the minimum sizes for allocations and assignments, This information is provided at the request of the ISP community
> to assist in filtering policy decisions "
> Currently, is there any provider filtering routes under LIR's minimum allocation size such as /22 ? 
> 

Anyone running a platform that can't take a full table would apply such 
a filter to weed out anyone who likes to announce all of their space as 
/24's for "traffic engineering". If one does that and doesn't announce 
the aggregate as well, one could find themselves facing random black holes.

~Seth




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