[40460] in North American Network Operators' Group
BGP with AT&T owned space
daemon@ATHENA.MIT.EDU (Jeff Harper)
Thu Aug 9 15:04:57 2001
Message-ID: <93B9C6964541D3119F350008C7F445579BE26A@dfwmsx05.ins.gte.com>
From: Jeff Harper <jharper@verizon.com>
To: "'nanog@merit.edu'" <nanog@merit.edu>
Date: Thu, 9 Aug 2001 14:04:15 -0500
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Just curious if anyone has noticed the leaking of the more specific routes
of AT&T's IP space in their BGP table. Here's what we're seeing in ours:
#s ip ro 12.0.0.0
Routing entry for 12.0.0.0/8, 589 known subnets
Variably subnetted with 9 masks
B 12.23.26.0/23 [20/0] via x.x.x.x
B 12.28.18.0/24 [20/0] via x.x.x.x
B 12.33.46.0/24 [20/0] via x.x.x.x, etc.....
I should just see the aggregation of the /8, but something changed on
8/7/2001 at precisely 8 AM Eastern time. The same is with their 24/8 and
their other networks as well. I have about 40,000 superfluous networks in
my BGP table. ;)
Jeff
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<TITLE>BGP with AT&T owned space</TITLE>
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<P><FONT SIZE=3D2 FACE=3D"Tahoma">Just curious if anyone has noticed =
the leaking of the more specific routes of AT&T's IP space in their =
BGP table. Here's what we're seeing in ours:</FONT></P>
<P><FONT SIZE=3D2 FACE=3D"Tahoma">#s ip ro 12.0.0.0</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Tahoma">Routing entry for 12.0.0.0/8, 589 =
known subnets</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Tahoma"> Variably subnetted with 9 =
masks</FONT>
</P>
<P><FONT SIZE=3D2 FACE=3D"Tahoma">B =
12.23.26.0/23 [20/0] via x.x.x.x</FONT>
<BR><FONT SIZE=3D2 =
FACE=3D"Tahoma">B 12.28.18.0/24 =
[20/0] via x.x.x.x</FONT>
<BR><FONT SIZE=3D2 =
FACE=3D"Tahoma">B 12.33.46.0/24 =
[20/0] via x.x.x.x, etc.....</FONT>
</P>
<BR>
<P><FONT SIZE=3D2 FACE=3D"Tahoma">I should just see the aggregation of =
the /8, but something changed on 8/7/2001 at precisely 8 AM Eastern =
time. The same is with their 24/8 and their other networks as =
well. I have about 40,000 superfluous networks in my BGP =
table. ;)</FONT></P>
<P><FONT SIZE=3D2 FACE=3D"Tahoma">Jeff</FONT>
</P>
<BR>
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