05/02/98 Internet Routing Problems

From: stats@merit.edu
Date: Sun May 03 1998 - 10:00:04 EDT


See http://www.merit.edu/ipma for a more detailed report on
routing problems and recommendations on ways service providers can
limit the spread of invalid routing information.
Send comments and questions to ipma@merit.edu

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Also see http://www.caida.org for more information about Internet statistics
collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
193.234.249.64/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
195.12.164.128/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 INCOMPLETE
195.12.164.144/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 INCOMPLETE
195.12.164.160/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 INCOMPLETE
195.12.164.192/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 INCOMPLETE
195.12.164.248/29 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 INCOMPLETE
200.30.42.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.32/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.64/29 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.72/29 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.80/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
207.228.34.160/27 at Mae-West from Best (AS3915) ASPATH=3915 5752 IGP
209.88.14.0/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.128/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.192/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.240/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.32/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.64/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.96/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.15.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE

Reserved AS Numbers
-------------------
AS64600 at Mae-East from NASA (AS297) ASPATH=297 64600 IGP

AS65034 at Mae-East from VisiNet (AS6261) ASPATH=6261 7594 7593 65034 IGP

AS65000 at Mae-East from internetMCI (AS3561) ASPATH=3561 4230 65000 IGP

AS65035 at Mae-East from VisiNet (AS6261) ASPATH=6261 7594 7593 65035 IGP

AS65350 at Mae-East from VisiNet (AS6261) ASPATH=6261 7594 65350 7704 IGP

AS65531 at Mae-East from CAIS (AS3491) ASPATH=3491 6261 7594 65350 7706 65531 IGP

AS64600 at Mae-West from NASA (AS297) ASPATH=297 64600 IGP

AS65034 at Mae-West from VisiNet (AS6261) ASPATH=6261 7594 7593 65034 IGP

AS65350 at Mae-West from VisiNet (AS6261) ASPATH=6261 7594 65350 7704 IGP

AS65035 at Mae-West from VisiNet (AS6261) ASPATH=6261 7594 7593 65035 IGP

AS65531 at Mae-West from CAIS (AS3491) ASPATH=3491 6261 7594 65350 7706 65531 IGP

AS65034 at AADS from CAIS (AS3491) ASPATH=3491 6261 7594 7593 65034 IGP

AS65000 at AADS from internetMCI (AS3561) ASPATH=3561 4230 65000 IGP

AS65350 at AADS from CAIS (AS3491) ASPATH=3491 6261 7594 65350 7586 IGP

AS65035 at AADS from CAIS (AS3491) ASPATH=3491 6261 7594 7593 65035 IGP

AS65531 at AADS from CAIS (AS3491) ASPATH=3491 6261 7594 65350 7706 65531 IGP

AS65000 at PacBell from internetMCI (AS3561) ASPATH=3561 4230 65000 IGP

AS65034 at Paix from OurWorld (AS7594) ASPATH=7594 7593 65034 IGP

AS65035 at Paix from OurWorld (AS7594) ASPATH=7594 7593 65035 IGP

AS65350 at Paix from OurWorld (AS7594) ASPATH=7594 65350 7704 IGP

AS65531 at Paix from OurWorld (AS7594) ASPATH=7594 65350 7706 65531 IGP

Largest Sources of BGP Instability
----------------------------------
(announcements + withdraws = total)

1. internetMCI (AS3561) at AADS 131745 + 8946 = 140691 BGP prefix updates
2. SPRINT (AS1239) at Mae-East 59623 + 15194 = 74817 BGP prefix updates
3. internetMCI (AS3561) at PacBell 52878 + 8415 = 61293 BGP prefix updates
4. internetMCI (AS3561) at Mae-East 25321 + 8894 = 34215 BGP prefix updates
5. BBNplanet (AS1) at Mae-East 20932 + 8229 = 29161 BGP prefix updates
6. BBNplanet (AS1) at Mae-West 21568 + 6857 = 28425 BGP prefix updates
7. MainStreet (AS3720) at Mae-West 12 + 16115 = 16127 BGP prefix updates
8. ANS (AS1673) at Mae-East 12208 + 521 = 12729 BGP prefix updates
9. OurWorld (AS7594) at Mae-West 10172 + 556 = 10728 BGP prefix updates
10. AT&T (AS6478) at AADS 8786 + 1830 = 10616 BGP prefix updates

Count of Announced Prefixes with AS origin IRR Discrepancies
------------------------------------------------------------
(See http://www.merit.edu/ipma/problems/)

1. SPRINT (1239) at mae-east 3781
2. internetMCI (3561) at pb 810
3. BBNplanet (1) at mae-west 540
4. Digex (2548) at mae-west 395
5. Grid (6113) at pb 353
6. AGIS (4200) at mae-east 337
7. IBMGlobal (2685) at mae-west 297
8. AT&T (6478) at aads 228
9. INAP.net (5646) at aads 219
10. CAIS (3491) at aads 166






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