North American Network Operators Group

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Route Filtering by Network Size

  • From: Marsh, Jerry
  • Date: Wed Nov 10 13:12:42 1999

I've changed jobs and been off the NANOG list for some time, so please
excuse the question.

I know some providers (such as SPRINT) filter BGP routing announcements
based on minimum announcement size.  The questions are:

1) 	Who all has such policies?

2) 	What are the specific sizes and address blocks being filtered?

3) 	Do they affect "portable" (provider independent) and "non-portable
(provider supplied) addressing in the same way.