North American Network Operators Group

Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

RE: What is the most standard subnet length on internet

  • From: Tomas L. Byrnes
  • Date: Tue Dec 23 14:12:34 2008

What I was describing is filtering the announcements of /24s that are
part of larger allocations. Not filtering the announcements of "The
Swamp".


>-----Original Message-----
>From: Skywing [mailto:[email protected]]
>Sent: Monday, December 22, 2008 7:08 PM
>To: [email protected]; Nathan Ward
>Cc: nanog list
>Subject: RE: What is the most standard subnet length on internet
>
>Snarky replies aside, it might be interesting to hear if there are any
>real examples of this being done intentionally and not out of not
>knowing better or otherwise configuration error.  For example, Tomas
>Byrnes's suggestion re: hijacking; although, I suspect that in that
>case, he's speaking of someone doing this filtering on a one-off basis
>and not on all /24's in the DFZ.
>
>- S
>
>-----Original Message-----
>From: [email protected] [mailto:[email protected]]
>Sent: Monday, December 22, 2008 10:05 PM
>To: Nathan Ward
>Cc: nanog list
>Subject: Re: What is the most standard subnet length on internet
>
>On Tue, 23 Dec 2008 14:44:46 +1300, Nathan Ward said:
>
>> Why are people doing this? Are they lacking clue, or, is there some
>> reasonable purpose?
>
>The total number of routing cluons is apparently a fixed quantity.  The
>number of AS's is known to be increasing. Do the math.
>