North American Network Operators Group
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Re: What is the most standard subnet length on internet

  • From: bmanning
  • Date: Tue Dec 23 00:22:54 2008 
On Tue, Dec 23, 2008 at 02:08:25PM +1300, Nathan Ward wrote:
> On 23/12/2008, at 1:31 PM, Seth Mattinen wrote:
> >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.
> 
> 
> People are filtering /24s without a 0/0 route?
> 

	actually, you should ask the more general question,

	"Are ISPs filtering when they don't have a 0/0 route?"

	and i suspect the answer is almost certainly.

	being default-free has its advantages as does not
	
	using some variable RIR metric as a basis for routing 
	
	policy.

--bill