02/07/98 Internet Routing Problems

From: stats@merit.edu
Date: Sun Feb 08 1998 - 10:00:02 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
---------------------------------------
199.250.128.192/27 at AADS from HLC (AS4565) ASPATH=4565 IGP
199.250.130.192/27 at AADS from HLC (AS4565) ASPATH=4565 IGP
204.213.176.5/32 at Mae-East from GoodNet (AS5696) ASPATH=5696 6062 IGP
204.213.176.5/32 at AADS from GoodNet (AS5696) ASPATH=5696 6062 IGP
207.26.64.80/28 at PacBell from ANS (AS1673) ASPATH=1673 1675 IGP

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

1. internetMCI (AS3561) at AADS 26047 + 11380 = 37427 BGP prefix updates
2. CAIS (AS3491) at AADS 4766 + 2107 = 6873 BGP prefix updates
3. GoodNet (AS5696) at AADS 4672 + 1197 = 5869 BGP prefix updates
4. SPRINT (AS1239) at Mae-East 3169 + 648 = 3817 BGP prefix updates
5. NetKonect (AS6716) at Mae-East 0 + 3704 = 3704 BGP prefix updates
6. idc (AS4694) at Mae-West 0 + 3394 = 3394 BGP prefix updates
7. Netcom (AS2551) at AADS 1598 + 1039 = 2637 BGP prefix updates
8. internetMCI (AS3561) at Mae-East 1854 + 690 = 2544 BGP prefix updates
9. ANS (AS1673) at PacBell 1365 + 170 = 1535 BGP prefix updates
10. INAP.net (AS5646) at AADS 777 + 743 = 1520 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 12.00 (12 ann, 1 entries)
2. HLC(AS4565) at AADS 10.33 (661 ann, 64 entries)
3. GoodNet(AS5696) at AADS 9.98 (4672 ann, 468 entries)
4. WebSecure(AS6583) at AADS 5.50 (11 ann, 2 entries)
5. Internex(AS2828) at AADS 5.45 (387 ann, 71 entries)
6. Netcom(AS2551) at AADS 5.17 (1598 ann, 309 entries)
7. CAIS(AS3491) at AADS 4.17 (4766 ann, 1143 entries)
8. Cableol(AS5089) at Mae-East 4.00 (16 ann, 4 entries)
9. HLC(AS4565) at Paix 3.55 (227 ann, 64 entries)
10. Primenet(AS3549) at AADS 3.07 (396 ann, 129 entries)
11. Internex(AS2828) at Paix 2.47 (173 ann, 70 entries)
12. ThePlanet(AS5388) at Mae-East 1.64 (131 ann, 80 entries)
13. Genuity(AS3847) at AADS 1.55 (510 ann, 329 entries)
14. internetMCI(AS3561) at AADS 1.48 (26047 ann, 17650 entries)
15. VisiNet(AS6261) at Mae-East 1.40 (268 ann, 192 entries)
16. Merit(AS237) at AADS 1.24 (135 ann, 109 entries)
17. conxion(AS4544) at AADS 1.11 (20 ann, 18 entries)
18. u-net(AS5669) at Paix 1.00 (8 ann, 8 entries)
19. DREN(AS668) at Mae-East 0.91 (219 ann, 240 entries)
20. EXODUS(AS3967) at AADS 0.90 (104 ann, 115 entries)

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

1. SPRINT (1239) at mae-east 4028
2. internetMCI (3561) at mae-east 978
3. BBNplanet (1) at mae-west 400
4. AGIS (4200) at mae-east 362
5. IBMGlobal (2685) at mae-west 223
6. CAIS (3491) at mae-west 213
7. Grid (6113) at pb 202
8. Digex (2548) at mae-west 183
9. AT&T (6478) at pb 179
10. INAP.net (5646) at mae-west 174






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