03/23/98 Internet Routing Problems

From: stats@merit.edu
Date: Tue Mar 24 1998 - 10:00:06 EST


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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collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
194.207.0.128/28 at Mae-West from VBC (AS6320) ASPATH=6320 IGP
195.6.71.0/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.0/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.128/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.128/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.160/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.160/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.192/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.192/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.224/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.224/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.32/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.32/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.64/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.64/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.96/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.96/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 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
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
202.163.0.224/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 7589 IGP
202.163.0.52/30 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 7589 INCOMPLETE
202.163.4.0/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 7589 INCOMPLETE
202.163.4.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 7589 INCOMPLETE
206.175.155.0/29 at Mae-East from CompuServe (AS4183) ASPATH=4183 INCOMPLETE
206.175.155.0/29 at Mae-West from CompuServe (AS4183) ASPATH=4183 INCOMPLETE
206.175.172.0/29 at Mae-East from CompuServe (AS4183) ASPATH=4183 INCOMPLETE
206.175.172.0/29 at Mae-West from CompuServe (AS4183) ASPATH=4183 INCOMPLETE
206.175.68.0/29 at Mae-East from CompuServe (AS4183) ASPATH=4183 INCOMPLETE
206.175.68.0/29 at Mae-West from CompuServe (AS4183) ASPATH=4183 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
207.26.64.80/28 at Mae-West from ANS (AS1673) ASPATH=1673 1675 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
209.88.14.240/28 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

AS65010 at Mae-East from ANS (AS1673) ASPATH=1673
AS64600 at Mae-West from NASA (AS297) ASPATH=297 64600 IGP

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

1. internetMCI (AS3561) at AADS 291678 + 35905 = 327583 BGP prefix updates
2. SPRINT (AS1239) at Mae-East 238206 + 48824 = 287030 BGP prefix updates
3. internetMCI (AS3561) at Mae-East 224674 + 41845 = 266519 BGP prefix updates
4. AGIS (AS4200) at Mae-East 52559 + 1110 = 53669 BGP prefix updates
5. OurWorld (AS7594) at Mae-West 3729 + 49478 = 53207 BGP prefix updates
6. MainStreet (AS3720) at Mae-West 44 + 40608 = 40652 BGP prefix updates
7. INAP.net (AS5646) at Mae-West 11274 + 8458 = 19732 BGP prefix updates
8. INAP.net (AS5646) at Mae-East 8737 + 6624 = 15361 BGP prefix updates
9. INAP.net (AS5646) at AADS 8434 + 3856 = 12290 BGP prefix updates
10. ANS (AS1673) at Mae-East 10573 + 941 = 11514 BGP prefix updates

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

1. internetMCI(AS3561) at Mae-East 118.58 (278420 ann, 2348 entries)
2. Cableol(AS5089) at Mae-East 73.75 (295 ann, 4 entries)
3. SPRINT(AS1239) at Mae-East 39.53 (134155 ann, 3394 entries)
4. DREN(AS668) at Mae-West 32.44 (7591 ann, 234 entries)
5. AIMnet(AS3763) at Mae-West 25.69 (1336 ann, 52 entries)
6. VisiNet(AS6261) at Mae-East 24.91 (1171 ann, 47 entries)
7. highway1(AS7922) at Mae-East 18.88 (151 ann, 8 entries)
8. highway1(AS7922) at Mae-West 16.00 (128 ann, 8 entries)
9. internetMCI(AS3561) at AADS 15.00 (266925 ann, 17792 entries)
10. IPF(AS5409) at Mae-East 13.91 (487 ann, 35 entries)
11. OurWorld(AS7594) at Mae-West 13.15 (3458 ann, 263 entries)
12. DREN(AS668) at Mae-East 12.53 (2970 ann, 237 entries)
13. internetMCI(AS3561) at PacBell 10.93 (196134 ann, 17937 entries)
14. AT&T(AS6478) at PacBell 10.00 (25059 ann, 2507 entries)
15. AGIS(AS4200) at Mae-East 9.54 (17805 ann, 1866 entries)
16. LinkAGE(AS4058) at Mae-East 8.69 (113 ann, 13 entries)
17. Priori(AS10303) at Mae-East 7.17 (301 ann, 42 entries)
18. NASA(AS297) at Mae-West 7.06 (6257 ann, 886 entries)
19. HLC(AS4565) at Mae-East 6.75 (405 ann, 60 entries)
20. IBMGlobal(AS2685) at AADS 6.63 (2094 ann, 316 entries)






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