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RE: illicit above.net announcements?

  • From: Alexander Kiwerski
  • Date: Thu Jun 01 16:50:59 2000

I'm not seeing the /16 announcment presently, and the /24 announcments I see
primarily through BBN Planet, and appear stable at present.

vienna2#sh ip bgp 202.36.147.0
BGP routing table entry for 202.36.147.0/24, version 22186188
Paths: (4 available, best #4)
  Advertised to non peer-group peers:
    207.98.190.5
  1 4648 9325, (received & used)
    4.24.144.33 from 4.24.144.33 (4.24.0.27)
      Origin IGP, metric 9080, localpref 100, valid, external
  1 4648 9325, (Received from a RR-client)
    4.24.145.29 (metric 24) from 207.98.190.5 (216.172.70.1)
      Origin IGP, metric 6710, localpref 100, valid, internal
      Originator: 216.172.70.1, Cluster list: 216.172.70.8
  6113 701 4648 9325
    192.41.177.249 from 192.41.177.68 (206.80.180.76)
      Origin IGP, metric 860000, localpref 86, valid, external
  1 4648 9325
    4.24.145.29 (metric 24) from 216.172.70.1 (216.172.70.1)
      Origin IGP, metric 6710, localpref 100, valid, internal, best
vienna2#

==========================
Alexander Kiwerski
Senior Network Engineer
Winstar Network Operations - West
Desk: 206-574-3121
Fax: 206-574-3055



-----Original Message-----
From: [email protected] [mailto:[email protected]]On Behalf Of
Simon Lockhart
Sent: Thursday, June 01, 2000 9:17 AM
To: Kai Schlichting
Cc: [email protected]
Subject: Re: illicit above.net announcements?



>
>Anyone here who is on the Vienna/London/Amsterdam exchange(s) and
>who is seeing what is alleged here: above.net leaking and/or
>flapping routes that are not their own ?

Taking the first of the netblocks mentioned, I see it as a /16 over LINX
from above.net:

rt2-thdo#sh ip bgp 202.36.147.0
BGP routing table entry for 202.36.0.0/16, version 11913196
Paths: (5 available, best #1)
  Advertised to peer-groups:
     internal internalmcast
  6461 4648 4648 4648, (aggregated by 4648 202.50.245.241)
    195.66.224.76 from 195.66.224.76 (207.126.96.50)
      Origin IGP, metric 20, localpref 100, valid, external,
atomic-aggregate, best
      Community: 2818:4050
  6461 4648 4648 4648, (aggregated by 4648 202.50.245.241), (received-only)
    195.66.224.76 from 195.66.224.76 (207.126.96.50)
      Origin IGP, metric 5320, localpref 100, valid, external,
atomic-aggregate
  6461 4648 4648 4648, (aggregated by 4648 202.50.245.241)
    212.58.224.4 from 212.58.224.4 (212.58.224.4)
      Origin IGP, metric 20, localpref 100, valid, internal,
atomic-aggregate
      Community: 2818:4050

>Is there a lookingglass at any of these exchanges that is publicly
>accessible?

LINX has one:
	http://www.linx.net/cgi-bin/lg.pl?LINX-London

Simon
--
Simon Lockhart                       |   Tel: +44 (0)1737 839676
Internet Engineering Manager         |   Fax: +44 (0)1737 839516
BBC Internet Services                | Email: [email protected]
Kingswood Warren,Tadworth,Surrey,UK  |   URL: http://support.bbc.co.uk/