01/21/98 Internet Routing Problems

From: stats@merit.edu
Date: Thu Jan 22 1998 - 10:00:05 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.
Send comments and questions to ipma@merit.edu

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Also see http://www.caida.org for more information about Internet statistics
collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
2.0.0.0/8 at Mae-East from HLC (AS4565) ASPATH=4565 INCOMPLETE
2.0.0.0/8 at Mae-West from HLC (AS4565) ASPATH=4565 INCOMPLETE
2.0.0.0/8 at AADS from HLC (AS4565) ASPATH=4565 INCOMPLETE
2.0.0.0/8 at Paix from HLC (AS4565) ASPATH=4565 INCOMPLETE
209.95.130.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 INCOMPLETE

Reserved AS Numbers
-------------------
AS65515 at Mae-East from Digex (AS2548) ASPATH=2548 5415 5415 65515 8207 IGP

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

1. internetMCI (AS3561) at AADS 42579 + 17344 = 59923 BGP prefix updates
2. NetKonect (AS6716) at Mae-East 0 + 46519 = 46519 BGP prefix updates
3. idc (AS4694) at Mae-West 1 + 19175 = 19176 BGP prefix updates
4. CAIS (AS3491) at AADS 14731 + 4290 = 19021 BGP prefix updates
5. Seastrom (AS3066) at Mae-East 0 + 14203 = 14203 BGP prefix updates
6. SPRINT (AS1239) at Mae-East 7139 + 2503 = 9642 BGP prefix updates
7. MIBX (AS6218) at PacBell 3726 + 3881 = 7607 BGP prefix updates
8. USCyber (AS4136) at Mae-East 0 + 7101 = 7101 BGP prefix updates
9. internetMCI (AS3561) at Mae-East 4300 + 1608 = 5908 BGP prefix updates
10. AT&T (AS6478) at Mae-East 4519 + 118 = 4637 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 128.48 (3726 ann, 29 entries)
2. CAIS(AS3491) at AADS 12.43 (14731 ann, 1185 entries)
3. VisiNet(AS6261) at Mae-East 9.54 (1355 ann, 142 entries)
4. IBMGlobal(AS2685) at AADS 8.62 (3827 ann, 444 entries)
5. HLC(AS4565) at AADS 6.69 (435 ann, 65 entries)
6. VisiNet(AS6261) at Mae-West 5.98 (855 ann, 143 entries)
7. NetAxs(AS4969) at Mae-East 5.66 (1359 ann, 240 entries)
8. Internex(AS2828) at AADS 3.43 (223 ann, 65 entries)
9. EXODUS(AS3967) at AADS 3.04 (301 ann, 99 entries)
10. UIC(AS6200) at AADS 2.67 (8 ann, 3 entries)
11. internetMCI(AS3561) at AADS 2.49 (42579 ann, 17124 entries)
12. Primenet(AS3549) at AADS 2.39 (342 ann, 143 entries)
13. ThePlanet(AS5388) at Mae-West 2.24 (175 ann, 78 entries)
14. GoodNet(AS5696) at AADS 2.23 (994 ann, 446 entries)
15. Netcom(AS2551) at AADS 2.20 (698 ann, 317 entries)
16. AT&T(AS6478) at Mae-East 2.07 (4519 ann, 2178 entries)
17. WNA(AS2914) at Paix 2.01 (2529 ann, 1258 entries)
18. ThePlanet(AS5388) at Mae-East 1.89 (153 ann, 81 entries)
19. HLC(AS4565) at Paix 1.86 (121 ann, 65 entries)
20. Alpha(AS4550) at AADS 1.37 (56 ann, 41 entries)

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

1. SPRINT (1239) at mae-east 3743
2. internetMCI (3561) at pb 792
3. BBNplanet (1) at mae-west 430
4. AGIS (4200) at mae-east 327
5. IBMGlobal (2685) at mae-west 222
6. AT&T (6478) at aads 194
7. Grid (6113) at pb 190
8. CAIS (3491) at mae-west 172
9. INAP.net (5646) at aads 160
10. Digex (2548) at mae-west 160






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