routing to 147.73/16

Wed Nov 19 16:25:33 UTC 1997

Phil,

The subnets you are receiving via your BGP session with DREN support the DoD  
HPCMP portions of the net at SC97.  There is a DREN connection to SC97 to  
support the demonstrations.  Therefore you should reach the DoD HPCMP  
resources at SC97 via your DREN connection, and the rest of your SC97 traffic  
should follow the less explicit 147.73/16 path.  DREN is not announcing  
these subnets to other peers at the exchanges, only to DREN members.

Meanwhile, in response to your message, Tom Kile installed a filter at PLK  
so you should no longer receive these prefixes via DREN.

--Ron

Begin forwarded message:

To: nanog at merit.edu
Subject: routing to 147.73/16
Date: Mon, 17 Nov 1997 13:04:07 -0700
From: Phil Wood <cpw at lanl.gov>
Sender: owner-nanog at merit.edu

Folks,

If any of you BGP peer with DREN, as we do, you will be getting
(as part of their AS668) a couple of subnets of 147.73/16:

B    147.240.0.0/16 [5/0] via 138.18.169.1, 01:44:58
     147.73.0.0/16 is variably subnetted, 2 subnets, 2
  B       147.73.234.0/28 [5/0] via 138.18.169.1, 01:40:24
  B       147.73.234.128/27 [5/0] via 138.18.169.1, 01:39:54

This could cause customers visiting SC97 to complain about
connectivity to their local network from SC97 unless you are also
receiving routing for the remaining 147.73 space from some other
peer.

I thought some subset of the nanog population might want to know
since it caused me a bit of trouble shooting this morning, and nobody
at DREN is available.

Phil