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
---------------------------------------
No routing problems were detected
Largest Sources of BGP Instability
----------------------------------
(announcements + withdraws = total)
1. internetMCI (AS3561) at AADS 50845 + 18057 = 68902 BGP prefix updates
2. NetKonect (AS6716) at Mae-East 0 + 9034 = 9034 BGP prefix updates
3. CAIS (AS3491) at AADS 6123 + 1853 = 7976 BGP prefix updates
4. internetMCI (AS3561) at PacBell 6605 + 912 = 7517 BGP prefix updates
5. internetMCI (AS3561) at Mae-East 6475 + 946 = 7421 BGP prefix updates
6. SPRINT (AS1239) at Mae-East 5825 + 1346 = 7171 BGP prefix updates
7. idc (AS4694) at Mae-West 0 + 6472 = 6472 BGP prefix updates
8. MIBX (AS6218) at PacBell 2701 + 2902 = 5603 BGP prefix updates
9. OurWorld (AS7594) at Paix 4840 + 276 = 5116 BGP prefix updates
10. AGIS (AS4200) at Mae-East 2826 + 2216 = 5042 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 Paix 345.71 (4840 ann, 14 entries)
2. MIBX(AS6218) at PacBell 21.44 (2701 ann, 126 entries)
3. WebSecure(AS6583) at AADS 9.00 (18 ann, 2 entries)
4. CAIS(AS3491) at AADS 7.38 (6123 ann, 830 entries)
5. u-net(AS5669) at Paix 4.88 (39 ann, 8 entries)
6. HLC(AS4565) at AADS 4.63 (310 ann, 67 entries)
7. OurWorld(AS7594) at Mae-West 4.45 (583 ann, 131 entries)
8. Internex(AS2828) at AADS 4.28 (274 ann, 64 entries)
9. IBMGlobal(AS2685) at AADS 3.52 (1193 ann, 339 entries)
10. internetMCI(AS3561) at AADS 2.91 (50845 ann, 17496 entries)
11. GoodNet(AS5696) at AADS 2.40 (1124 ann, 468 entries)
12. HLC(AS4565) at Paix 1.96 (131 ann, 67 entries)
13. AGIS(AS4200) at Mae-East 1.63 (2826 ann, 1733 entries)
14. VisiNet(AS6261) at Mae-East 1.62 (242 ann, 149 entries)
15. AT&T(AS6478) at AADS 1.57 (3636 ann, 2312 entries)
16. INAP.net(AS5646) at AADS 1.54 (1805 ann, 1175 entries)
17. VisiNet(AS6261) at Mae-West 1.49 (220 ann, 148 entries)
18. Merit(AS237) at AADS 1.49 (159 ann, 107 entries)
19. ESnet(AS293) at AADS 1.49 (156 ann, 105 entries)
20. Primenet(AS3549) at AADS 1.37 (184 ann, 134 entries)
Count of Announced Prefixes with AS origin IRR Discrepancies
------------------------------------------------------------
(See http://www.merit.edu/ipma/problems/)
1. SPRINT (1239) at mae-east 3879
2. internetMCI (3561) at pb 798
3. BBNplanet (1) at mae-west 384
4. AGIS (4200) at mae-east 294
5. IBMGlobal (2685) at mae-west 220
6. Grid (6113) at mae-west 210
7. AT&T (6478) at pb 189
8. INAP.net (5646) at aads 161
9. Digex (2548) at mae-west 157
10. CAIS (3491) at aads 136
This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:13:17 EDT