05/01/98 Internet Routing Problems

From: stats@merit.edu
Date: Sat May 02 1998 - 10:00:05 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.
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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
195.89.17.81/32 at Mae-East from NetAxs (AS4969) ASPATH=4969 8001 6889 IGP
198.80.116.192/27 at Mae-East from ANS (AS1673) ASPATH=1673 1670 IGP
198.80.116.192/27 at Mae-West from ANS (AS1673) ASPATH=1673 1670 IGP
198.80.116.192/27 at PacBell from ANS (AS1673) ASPATH=1673 1670 IGP
198.80.9.0/28 at Mae-East from ANS (AS1673) ASPATH=1673 1327 1684 IGP
198.80.9.0/28 at Mae-West from ANS (AS1673) ASPATH=1673 1327 1684 IGP
198.80.9.0/28 at PacBell from ANS (AS1673) ASPATH=1673 1327 1684 IGP
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
202.61.248.202/32 at Mae-West from OurWorld (AS7594) ASPATH=7594 3976 3786 1221 INCOMPLETE
202.61.248.202/32 at Paix from OurWorld (AS7594) ASPATH=7594 3976 3786 1221 INCOMPLETE
206.84.149.20/32 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP
207.26.64.80/28 at Mae-East from ANS (AS1673) ASPATH=1673 1324 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 CAIS (AS3491) ASPATH=3491 6261 7594 7593 65034 IGP

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

AS65034 at Mae-West from CAIS (AS3491) ASPATH=3491 6261 7594 7593 65034 IGP

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

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

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

1. internetMCI (AS3561) at AADS 139199 + 12422 = 151621 BGP prefix updates
2. SPRINT (AS1239) at Mae-East 62069 + 14988 = 77057 BGP prefix updates
3. MainStreet (AS3720) at Mae-West 1 + 54460 = 54461 BGP prefix updates
4. ESnet (AS293) at Mae-West 596 + 52056 = 52652 BGP prefix updates
5. ESnet (AS293) at Mae-East 532 + 52055 = 52587 BGP prefix updates
6. AT&T (AS6478) at AADS 46375 + 2710 = 49085 BGP prefix updates
7. internetMCI (AS3561) at Mae-East 33586 + 12953 = 46539 BGP prefix updates
8. internetMCI (AS3561) at PacBell 31230 + 12209 = 43439 BGP prefix updates
9. AT&T (AS6478) at Mae-West 39068 + 2828 = 41896 BGP prefix updates
10. Priori (AS10303) at Mae-East 5 + 37904 = 37909 BGP prefix updates

Instability Ranking of Service Providers
----------------------------------------
(The number of BGP announcements divided by the number
of routing table entries)

1. OurWorld(AS7594) at Mae-West 23.07 (5513 ann, 239 entries)
2. OurWorld(AS7594) at Paix 9.67 (2272 ann, 235 entries)
3. VisiNet(AS6261) at Mae-West 9.54 (2108 ann, 221 entries)
4. VisiNet(AS6261) at Mae-East 8.68 (1848 ann, 213 entries)
5. AIMnet(AS3763) at Mae-West 8.50 (442 ann, 52 entries)
6. IBMGlobal(AS2685) at AADS 7.61 (624 ann, 82 entries)
7. Cableol(AS5089) at Mae-East 6.75 (27 ann, 4 entries)
8. GEOnet(AS3356) at PacBell 4.56 (401 ann, 88 entries)
9. highway1(AS7922) at Mae-East 4.44 (40 ann, 9 entries)
10. highway1(AS7922) at Mae-West 4.11 (37 ann, 9 entries)
11. IXI(AS5418) at Mae-East 3.86 (54 ann, 14 entries)
12. Primenet(AS3549) at AADS 3.56 (452 ann, 127 entries)
13. Primenet(AS3549) at Mae-West 3.23 (446 ann, 138 entries)
14. Primenet(AS3549) at Mae-East 3.22 (445 ann, 138 entries)
15. WireHub(AS5496) at Mae-East 3.07 (43 ann, 14 entries)
16. Dialnet(AS5552) at Mae-East 2.86 (444 ann, 155 entries)
17. BBNplanet(AS1) at Mae-West 2.86 (17992 ann, 6301 entries)
18. BBNplanet(AS1) at Mae-East 2.67 (16801 ann, 6301 entries)
19. Above(AS6461) at Mae-East 2.56 (877 ann, 342 entries)
20. Above(AS6461) at AADS 2.46 (852 ann, 347 entries)

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

1. SPRINT (1239) at mae-east 3702
2. internetMCI (3561) at pb 798
3. BBNplanet (1) at mae-east 519
4. Digex (2548) at mae-west 411
5. Grid (6113) at pb 366
6. AGIS (4200) at mae-east 366
7. IBMGlobal (2685) at mae-west 275
8. AT&T (6478) at aads 233
9. INAP.net (5646) at mae-west 218
10. CAIS (3491) at aads 155






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