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
---------------------------------------
192.17.238.128/27 at AADS from UIUC (AS38) ASPATH=38 IGP
192.198.129.128/27 at AADS from conxion (AS4544) ASPATH=4544 1760 IGP
195.12.164.128/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 1299 1299 8516 INCOMPLETE
61.8.0.0/19 at AADS from IBMGlobal (AS2685) ASPATH=2685 5673 7657 7543 IGP
Largest Sources of BGP Instability
----------------------------------
(announcements + withdraws = total)
1. internetMCI (AS3561) at AADS 19892 + 8481 = 28373 BGP prefix updates
2. NetKonect (AS6716) at Mae-East 0 + 17781 = 17781 BGP prefix updates
3. AT&T (AS6478) at AADS 15416 + 1181 = 16597 BGP prefix updates
4. idc (AS4694) at Mae-West 0 + 5749 = 5749 BGP prefix updates
5. SPRINT (AS1239) at Mae-East 2029 + 820 = 2849 BGP prefix updates
6. INAP.net (AS5646) at AADS 1219 + 1078 = 2297 BGP prefix updates
7. INAP.net (AS5646) at Mae-East 1210 + 1066 = 2276 BGP prefix updates
8. BBNplanet (AS1) at Mae-East 1982 + 214 = 2196 BGP prefix updates
9. CAIS (AS3491) at AADS 1282 + 322 = 1604 BGP prefix updates
10. BBNplanet (AS1) at Mae-West 1523 + 48 = 1571 BGP prefix updates
Instability Ranking of Service Providers
----------------------------------------
(The number of BGP announcements divided by the number
of routing table entries)
1. HLC(AS4565) at AADS 12.84 (809 ann, 63 entries)
2. Cableol(AS5089) at Mae-East 8.50 (34 ann, 4 entries)
3. AT&T(AS6478) at AADS 6.30 (15416 ann, 2447 entries)
4. conxion(AS4544) at AADS 4.39 (79 ann, 18 entries)
5. HLC(AS4565) at Paix 3.59 (226 ann, 63 entries)
6. Internex(AS2828) at AADS 3.05 (226 ann, 74 entries)
7. DRA(AS1746) at AADS 2.58 (31 ann, 12 entries)
8. HLC(AS4565) at Paix 1.90 (120 ann, 63 entries)
9. CAIS(AS3491) at AADS 1.35 (1282 ann, 947 entries)
10. Netcom(AS2551) at AADS 1.30 (403 ann, 310 entries)
11. IOS(AS5000) at AADS 1.15 (30 ann, 26 entries)
12. internetMCI(AS3561) at AADS 1.13 (19892 ann, 17531 entries)
13. Home(AS6172) at Paix 1.10 (79 ann, 72 entries)
14. Genuity(AS3847) at Paix 1.04 (341 ann, 329 entries)
15. Intermedia(AS6235) at Mae-East 1.02 (221 ann, 216 entries)
16. ThePlanet(AS5388) at Mae-East 0.95 (76 ann, 80 entries)
17. GoodNet(AS5696) at AADS 0.94 (567 ann, 604 entries)
18. INAP.net(AS5646) at AADS 0.73 (1219 ann, 1676 entries)
19. INAP.net(AS5646) at Mae-East 0.72 (1210 ann, 1676 entries)
20. InterAccess(AS3789) at AADS 0.69 (18 ann, 26 entries)
Count of Announced Prefixes with AS origin IRR Discrepancies
------------------------------------------------------------
(See http://www.merit.edu/ipma/problems/)
1. SPRINT (1239) at mae-east 3784
2. internetMCI (3561) at aads 938
3. BBNplanet (1) at mae-east 435
4. AGIS (4200) at mae-east 339
5. IBMGlobal (2685) at mae-west 243
6. Grid (6113) at pb 194
7. Digex (2548) at mae-west 187
8. AT&T (6478) at pb 186
9. INAP.net (5646) at mae-west 172
10. CAIS (3491) at aads 158
This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:13:18 EDT