02/08/98 Internet Routing Problems

From: stats@merit.edu
Date: Mon Feb 09 1998 - 10:00:03 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
---------------------------------------
No routing problems were detected

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

1. internetMCI (AS3561) at AADS 31785 + 12433 = 44218 BGP prefix updates
2. AT&T (AS6478) at AADS 6102 + 2141 = 8243 BGP prefix updates
3. idc (AS4694) at Mae-West 0 + 7259 = 7259 BGP prefix updates
4. CAIS (AS3491) at AADS 4118 + 1495 = 5613 BGP prefix updates
5. NetKonect (AS6716) at Mae-East 0 + 5050 = 5050 BGP prefix updates
6. SPRINT (AS1239) at Mae-East 2677 + 900 = 3577 BGP prefix updates
7. Digex (AS2548) at Mae-West 49 + 2982 = 3031 BGP prefix updates
8. MainStreet (AS3720) at Mae-West 12 + 2219 = 2231 BGP prefix updates
9. internetMCI (AS3561) at Mae-East 1228 + 801 = 2029 BGP prefix updates
10. Netcom (AS2551) at AADS 939 + 424 = 1363 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 70.00 (70 ann, 1 entries)
2. HLC(AS4565) at AADS 12.22 (880 ann, 72 entries)
3. Internex(AS2828) at AADS 5.14 (365 ann, 71 entries)
4. HLC(AS4565) at Paix 4.32 (311 ann, 72 entries)
5. Cableol(AS5089) at Mae-East 4.25 (17 ann, 4 entries)
6. WebSecure(AS6583) at AADS 4.00 (8 ann, 2 entries)
7. CAIS(AS3491) at AADS 3.71 (4118 ann, 1110 entries)
8. Netcom(AS2551) at AADS 3.11 (939 ann, 302 entries)
9. AT&T(AS6478) at AADS 2.78 (6102 ann, 2195 entries)
10. internetMCI(AS3561) at AADS 1.80 (31785 ann, 17670 entries)
11. ThePlanet(AS5388) at Mae-East 1.59 (127 ann, 80 entries)
12. Internex(AS2828) at Paix 1.51 (106 ann, 70 entries)
13. DRA(AS1746) at AADS 1.50 (18 ann, 12 entries)
14. GoodNet(AS5696) at AADS 1.44 (658 ann, 456 entries)
15. HLC(AS4565) at Mae-West 1.17 (84 ann, 72 entries)
16. HLC(AS4565) at Mae-East 1.01 (74 ann, 73 entries)
17. EXODUS(AS3967) at Paix 0.98 (104 ann, 106 entries)
18. OLEANE(AS2917) at Mae-East 0.90 (38 ann, 42 entries)
19. VisiNet(AS6261) at Mae-West 0.90 (150 ann, 167 entries)
20. Primenet(AS3549) at AADS 0.83 (108 ann, 130 entries)

Count of Announced Prefixes with AS origin IRR Discrepancies
------------------------------------------------------------
(See http://www.merit.edu/ipma/problems/)

1. SPRINT (1239) at mae-east 4003
2. internetMCI (3561) at pb 965
3. BBNplanet (1) at mae-west 402
4. AGIS (4200) at mae-east 349
5. IBMGlobal (2685) at mae-west 220
6. AT&T (6478) at aads 192
7. Grid (6113) at pb 191
8. Digex (2548) at mae-west 179
9. CAIS (3491) at mae-west 179
10. INAP.net (5646) at aads 171






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