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 19202 + 6672 = 25874 BGP prefix updates
2. internetMCI (AS3561) at Mae-East 7593 + 2543 = 10136 BGP prefix updates
3. NetKonect (AS6716) at Mae-East 0 + 8396 = 8396 BGP prefix updates
4. MIBX (AS6218) at PacBell 4075 + 4042 = 8117 BGP prefix updates
5. SPRINT (AS1239) at Mae-East 5509 + 2143 = 7652 BGP prefix updates
6. idc (AS4694) at Mae-West 0 + 6257 = 6257 BGP prefix updates
7. USCyber (AS4136) at Mae-East 0 + 5178 = 5178 BGP prefix updates
8. BBNplanet (AS1) at Mae-East 3354 + 429 = 3783 BGP prefix updates
9. CAIS (AS3491) at AADS 2252 + 839 = 3091 BGP prefix updates
10. internetMCI (AS3561) at PacBell 2341 + 724 = 3065 BGP prefix updates
Instability Ranking of Service Providers
----------------------------------------
(The number of BGP announcements divided by the number
of routing table entries)
1. MIBX(AS6218) at PacBell 32.34 (4075 ann, 126 entries)
2. HLC(AS4565) at AADS 7.98 (519 ann, 65 entries)
3. Internex(AS2828) at AADS 6.54 (412 ann, 63 entries)
4. Cableol(AS5089) at Mae-East 6.00 (24 ann, 4 entries)
5. HLC(AS4565) at Paix 2.35 (153 ann, 65 entries)
6. Internex(AS2828) at Paix 2.06 (128 ann, 62 entries)
7. Netcom(AS2551) at AADS 2.02 (634 ann, 314 entries)
8. CAIS(AS3491) at AADS 1.92 (2252 ann, 1172 entries)
9. GoodNet(AS5696) at AADS 1.56 (688 ann, 442 entries)
10. conxion(AS4544) at AADS 1.50 (27 ann, 18 entries)
11. u-net(AS5669) at Paix 1.38 (11 ann, 8 entries)
12. Priori(AS10303) at Paix 1.37 (48 ann, 35 entries)
13. Genuity(AS3847) at AADS 1.14 (484 ann, 424 entries)
14. internetMCI(AS3561) at AADS 1.11 (19202 ann, 17234 entries)
15. Alpha(AS4550) at AADS 1.05 (43 ann, 41 entries)
16. Above(AS6461) at Paix 0.98 (92 ann, 94 entries)
17. DREN(AS668) at Mae-East 0.93 (228 ann, 244 entries)
18. INCnet(AS3857) at AADS 0.86 (48 ann, 56 entries)
19. Internex(AS2828) at Mae-East 0.84 (53 ann, 63 entries)
20. HLC(AS4565) at Mae-East 0.83 (55 ann, 66 entries)
Count of Announced Prefixes with AS origin IRR Discrepancies
------------------------------------------------------------
(See http://www.merit.edu/ipma/problems/)
1. SPRINT (1239) at mae-east 3738
2. internetMCI (3561) at pb 776
3. BBNplanet (1) at mae-west 447
4. AGIS (4200) at mae-east 361
5. IBMGlobal (2685) at mae-east 234
6. AT&T (6478) at pb 200
7. Grid (6113) at pb 188
8. Digex (2548) at mae-west 167
9. INAP.net (5646) at mae-west 159
10. CAIS (3491) at mae-west 145
This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:13:17 EDT