01/02/98 Internet Routing Problems

From: stats@merit.edu
Date: Sat Jan 03 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.
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
---------------------------------------
192.116.207.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 INCOMPLETE
205.181.249.35/32 at Mae-East from Intermedia (AS6235) ASPATH=6235 5651 6433 IGP
205.181.249.37/32 at Mae-East from Intermedia (AS6235) ASPATH=6235 5651 6433 IGP
209.95.130.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 INCOMPLETE

Reserved AS Numbers
-------------------
AS65515 at Mae-East from SPRINT (AS1239) ASPATH=1239 6453 6846 5415 5593 65515 8207 IGP

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

1. SPRINT (AS1239) at Mae-East 80862 + 18048 = 98910 BGP prefix updates
2. NetKonect (AS6716) at Mae-East 0 + 73470 = 73470 BGP prefix updates
3. USCyber (AS4136) at Mae-East 1 + 55666 = 55667 BGP prefix updates
4. GetNet (AS5784) at Mae-East 0 + 43087 = 43087 BGP prefix updates
5. internetMCI (AS3561) at AADS 34093 + 6562 = 40655 BGP prefix updates
6. internetMCI (AS3561) at Mae-East 26719 + 8821 = 35540 BGP prefix updates
7. ANS (AS1673) at Mae-East 25015 + 271 = 25286 BGP prefix updates
8. telia (AS1299) at Mae-East 189 + 22960 = 23149 BGP prefix updates
9. CompuServe (AS4183) at Mae-East 4 + 15577 = 15581 BGP prefix updates
10. idc (AS4694) at Mae-West 0 + 8268 = 8268 BGP prefix updates

Instability Ranking of Service Providers
----------------------------------------
(The number of BGP announcements divided by the number
of routing table entries)

1. Cableol(AS5089) at Mae-East 41.50 (166 ann, 4 entries)
2. Primenet(AS3549) at AADS 22.99 (3104 ann, 135 entries)
3. Interpath(AS3407) at Mae-East 22.50 (720 ann, 32 entries)
4. OLEANE(AS2917) at Mae-East 22.00 (880 ann, 40 entries)
5. ANS(AS1673) at Mae-East 14.61 (25015 ann, 1712 entries)
6. HLC(AS4565) at AADS 9.68 (610 ann, 63 entries)
7. HLC(AS4565) at Mae-East 8.87 (559 ann, 63 entries)
8. IBMGlobal(AS2685) at AADS 8.31 (299 ann, 36 entries)
9. Nacamar(AS3257) at Mae-East 8.23 (535 ann, 65 entries)
10. InterAccess(AS3789) at AADS 7.35 (191 ann, 26 entries)
11. Intermedia(AS6235) at Mae-East 5.46 (1282 ann, 235 entries)
12. SPRINT(AS1239) at Mae-East 3.77 (80862 ann, 21477 entries)
13. HLC(AS4565) at Paix 3.46 (218 ann, 63 entries)
14. Primenet(AS3549) at Mae-East 3.37 (455 ann, 135 entries)
15. CAIS(AS3491) at AADS 3.09 (3998 ann, 1292 entries)
16. INS(AS6660) at Mae-East 2.92 (178 ann, 61 entries)
17. Dialnet(AS5552) at Mae-East 2.65 (445 ann, 168 entries)
18. Internex(AS2828) at AADS 2.41 (147 ann, 61 entries)
19. AGIS(AS4200) at Mae-East 2.39 (4229 ann, 1771 entries)
20. Internex(AS2828) at Mae-East 2.33 (142 ann, 61 entries)

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

1. SPRINT (1239) at mae-east 3567
2. internetMCI (3561) at pb 1019
3. BBNplanet (1) at mae-west 409
4. AGIS (4200) at mae-east 363
5. IBMGlobal (2685) at mae-east 204
6. Grid (6113) at pb 190
7. INAP.net (5646) at aads 162
8. AT&T (6478) at pb 161
9. Digex (2548) at mae-west 160
10. CAIS (3491) at mae-west 143






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