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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A hypermail archive is available at
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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
194.68.51.224/28 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
195.12.164.224/28 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
198.80.116.192/27 at Mae-West from ANS (AS1673) ASPATH=1673 1670 IGP
206.185.10.249/32 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP
206.84.149.20/32 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP
206.84.149.30/32 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP
207.26.64.80/28 at Mae-West from ANS (AS1673) ASPATH=1673 1324 IGP
Largest Sources of BGP Instability
----------------------------------
(announcements + withdraws = total)
1. SPRINT (AS1239) at Mae-East 45912 + 10789 = 56701 BGP prefix updates
2. internetMCI (AS3561) at Mae-East 31418 + 9274 = 40692 BGP prefix updates
3. internetMCI (AS3561) at AADS 30105 + 10003 = 40108 BGP prefix updates
4. internetMCI (AS3561) at PacBell 28860 + 9663 = 38523 BGP prefix updates
5. MainStreet (AS3720) at Mae-West 0 + 19993 = 19993 BGP prefix updates
6. BBNplanet (AS1) at Mae-East 9193 + 4780 = 13973 BGP prefix updates
7. ANS (AS1673) at Mae-East 11117 + 375 = 11492 BGP prefix updates
8. BBNplanet (AS1) at Mae-West 7065 + 3793 = 10858 BGP prefix updates
9. OurWorld (AS7594) at PacBell 0 + 9177 = 9177 BGP prefix updates
10. ANS (AS1673) at Mae-West 6364 + 2365 = 8729 BGP prefix updates
Instability Ranking of Service Providers
----------------------------------------
(The number of BGP announcements divided by the number
of routing table entries)
1. highway1(AS7922) at Mae-West 15.91 (175 ann, 11 entries)
2. highway1(AS7922) at Mae-East 15.64 (172 ann, 11 entries)
3. OurWorld(AS7594) at Mae-West 15.32 (3722 ann, 243 entries)
4. VisiNet(AS6261) at Mae-West 9.70 (2096 ann, 216 entries)
5. VisiNet(AS6261) at Mae-East 8.55 (1890 ann, 221 entries)
6. AIMnet(AS3763) at Mae-West 7.42 (393 ann, 53 entries)
7. OurWorld(AS7594) at Paix 4.20 (1028 ann, 245 entries)
8. Nacamar(AS3257) at Mae-West 3.95 (308 ann, 78 entries)
9. GEOnet(AS3356) at PacBell 3.51 (358 ann, 102 entries)
10. ICI(AS6561) at Mae-West 3.21 (45 ann, 14 entries)
11. ANS(AS1673) at Mae-East 2.63 (4128 ann, 1572 entries)
12. DISA(AS568) at Mae-West 2.39 (1353 ann, 565 entries)
13. u-net(AS5669) at Paix 2.30 (23 ann, 10 entries)
14. IOS(AS5000) at AADS 1.94 (64 ann, 33 entries)
15. IOS(AS5000) at Mae-East 1.91 (63 ann, 33 entries)
16. IOS(AS5000) at Mae-West 1.91 (63 ann, 33 entries)
17. Home(AS6172) at Mae-East 1.80 (144 ann, 80 entries)
18. ESnet(AS293) at Mae-West 1.61 (338 ann, 210 entries)
19. NASA(AS297) at Mae-East 1.13 (312 ann, 276 entries)
20. ISI.Net(AS6196) at Mae-East 1.06 (196 ann, 185 entries)
Count of Announced Prefixes with AS origin IRR Discrepancies
------------------------------------------------------------
(See http://www.merit.edu/ipma/problems/)
1. SPRINT (1239) at mae-east 3891
2. internetMCI (3561) at pb 798
3. (0) at aads 655
4. BBNplanet (1) at mae-west 468
5. AGIS (4200) at mae-east 437
6. Digex (2548) at mae-west 365
7. IBMGlobal (2685) at mae-west 351
8. AT&T (7018) at pb 255
9. INAP.net (5646) at mae-west 205
10. Grid (6113) at pb 172
This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:13:18 EDT