[426] in North American Network Operators' Group
Re: filtering long prefixes
daemon@ATHENA.MIT.EDU (Geert Jan de Groot)
Thu Sep 21 06:00:40 1995
To: smd@sprint.net
Cc: nanog@MERIT.EDU
From: Geert Jan de Groot <GeertJan.deGroot@ripe.net>
In-Reply-To: Your message of "Thu, 21 Sep 1995 05:27:36 EDT."
<95Sep21.052749-0400_edt.20696+1119@chops.icp.net>
Date: Thu, 21 Sep 1995 11:59:10 +0200
Resent-From: nanog@MERIT.EDU
On Thu, 21 Sep 1995 05:27:36 -0400 Sean Doran wrote:
> reject BGP announcements which:
> -- are an old-style classful B network with a
> mask longer than 16 bits
We have assigned 'chunks' of old-style B's in cases where
it made a significant difference (obsolete equipment).
Again, I see no technical reason not to do this;
as far as your routers are concerned, there is not difference
between 191.191.0.0/18 and 194.194.0.0/18
Geert Jan
(trying not to get into the discussion of the validity of
prefix length filtering again)
