nanog mailing list archives

RE: 7007: FROM THE HORSE'S MOUTH


From: Dave Van Allen <dave () fast net>
Date: Fri, 25 Apr 1997 17:52:07 -0400


-----Original Message-----
From:  Avi Freedman [SMTP:freedman () netaxs com]
Sent:  Friday, April 25, 1997 5:20 PM
To:    freedman () access netaxs com; nanog () merit edu
Subject:       7007: FROM THE HORSE'S MOUTH


MAI's view:

Here's a status on what AS 7007 themselves saw and think happened.
They're disconnected from the 'net now, so they can't post this 
themselves.
MAI does NOT think that they were distributing the BGP routes into an
IGP and then readvertising them on that basis; they think there was/is
a Bay BGP bug that caused this to happen.

Or Bay unfamiliarity, to be fair.  BCN's are all over the core participating
in BGP everyday in some very large networks as you know.  If MIA is not
running the Bay ISP workspace code, then they need to get Bay to educate them
on what's available and appropriate for their environment.

An outside view of what happened:

And ASN 7007 

We saw about 60k routes in our core routers at the time, and saw
thousands of routes from 7007 when we looked more carefully.

When you and I were on the phone, we saw 70K at one time, and the Cisco's
were at 100% doing nothing but route calculations.

We kept clearing sessions to filter 7007 but the routes kept popping
back up:  Sprint (of course), UUNET, and MCI all had them.

Which of course half of the Net was doing, so all routers running dampening,
had 3/4 of the prefixes on hold.

Now a good 4 hours after the main-event, I still see MAE routers with a
couple thousand dampened paths.  Most of the connectivity is stable now (from
my view), so some of you can clear ip bgp damp and make a few more customers
happy.

I suppose that the immediate topic will be route filtering vs. 
AS_PATH filtering...

As it should of been a long time ago.

Raw fish tonight, Avi?

Best regards,

Dave Van Allen - You Tools Corporation/FASTNET(tm)
dave () fast net (610)289-1100 http://www.fast.net
FASTNET - PA/NJ/DE Business Internet Solutions

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