Problem with routing from AS15694 to some US networks

Thu Aug 9 15:56:08 UTC 2001

>From the output there, it looks like that is the chap that is aggregating
the /20 that encompasses your block.  How large is your ip block?

-----Original Message-----
From: Adam Obszynski [mailto:awo at atm.com.pl]
Sent: Thursday, August 09, 2001 11:55 AM
To: nanog at merit.edu
Subject: Problem with routing from AS15694 to some US networks

Hello NONAG!

I'm speaking from Poland, and would like to ask you about help in finding
some kind of contact to ZephyrTele NOC/NMC becouse they absent in irrd
and they recorc in arin is very simple. They anounce our network without
BGP session established to our AS 15694, here is sample output which i found
after some time of problems with US IP regions (the same hapends in
direction
to AOL.net but cannot find his looking-glass or route server)

Next issue: is there any good way to avoid those situations ? Everybody
could
redistribute static "sh*s" to BGP and spread it around..

here is sample output from my small investigation:

telnet ner-routes.bbnplanet.net
[..]
ner-routes>trace 217.17.34.10

Type escape sequence to abort.
Tracing the route to 217.17.34.10

  1 e0-1-5.burlma1-ops1.bbnplanet.net (4.2.34.162) 144 msec 8 msec 240 msec
  2 s7-0-4.bstnma1-cr7.bbnplanet.net (4.0.3.181) 4 msec 4 msec 4 msec
  3 p5-0.bstnma1-ba2.bbnplanet.net (4.24.4.225) 4 msec 4 msec 4 msec
  4 p7-0.bstnma1-br2.bbnplanet.net (4.24.7.121) 4 msec 4 msec 4 msec
  5 p2-0.bstnma1-br1.bbnplanet.net (4.24.7.113) 0 msec 4 msec 4 msec
  6 p9-0.nycmny1-nbr2.bbnplanet.net (4.24.6.50) 12 msec 12 msec 8 msec
  7 p15-0.nycmny1-nbr1.bbnplanet.net (4.24.10.209) 12 msec 12 msec 8 msec
  8 p1-0.nycmny1-cr9.bbnplanet.net (4.24.8.162) 8 msec 12 msec 12 msec
  9 h0.zephyrtel.bbnplanet.net (4.24.188.50) 12 msec 12 msec 12 msec
 10 gr1-ny.ip.zephyrtele.com (12.35.239.4) 8 msec 12 msec 12 msec
 11  *  *  *
 12  *  *  *
 13  *  *  *
 14  *  *  *
 15  *
    12.124.183.37 !A  *
ner-routes>sh ip bgp reg _15694$
BGP table version is 1340345, local router ID is 4.2.34.165
Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop          Metric LocPrf Weight Path
* i217.17.32.0/20   4.24.188.50                 100      0 16499 7018 1239
1755 8246 15694 i

ner-routes>sh ip bg 217.17.32.1
BGP routing table entry for 217.17.32.0/20, version 0
Paths: (1 available, no best path)
  16499 7018 1239 1755 8246 15694, (aggregated by 15694 217.17.34.1)
    4.24.188.50 (inaccessible) from 4.24.0.48 (4.24.1.60)
      Origin IGP, localpref 100, valid, internal, atomic-aggregate
      Community: 1:1000
      Originator : 4.24.0.225, Cluster list: 4.24.0.48, 4.24.0.131

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