02/21/98 Internet Routing Problems

From: stats@merit.edu
Date: Sun Feb 22 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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Also see http://www.caida.org for more information about Internet statistics
collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
10.11.12.0/24 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
10.11.12.0/24 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
10.11.12.0/24 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
10.11.12.0/24 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
192.168.203.38/32 at AADS from Merit (AS237) ASPATH=237 INCOMPLETE
192.168.203.38/32 at AADS from Merit (AS237) ASPATH=237 INCOMPLETE
195.12.164.128/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 1299 1299 8516 INCOMPLETE
195.12.164.144/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 1299 1299 8516 INCOMPLETE
195.12.164.248/29 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 1299 1299 8516 INCOMPLETE
195.12.165.0/29 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 1299 1299 8516 INCOMPLETE
209.104.192.108/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.192.108/30 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.108/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.192.108/30 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.12/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.192.12/30 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.12/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.192.12/30 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.20/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.192.20/30 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.20/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.192.20/30 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.24/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.192.24/30 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.24/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.192.24/30 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.248/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.192.248/30 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.248/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.192.248/30 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.28/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.192.28/30 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.28/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.192.28/30 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.32/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.192.32/30 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.32/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.192.32/30 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.40/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.192.40/30 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.40/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.192.40/30 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.52/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.192.52/30 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.52/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.192.52/30 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.60/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.192.60/30 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.60/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.192.60/30 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.84/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.192.84/30 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.84/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.192.84/30 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.96/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.192.96/30 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.192.96/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.192.96/30 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.195.2/32 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.195.2/32 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.195.2/32 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.195.2/32 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.195.5/32 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.195.5/32 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.195.5/32 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.195.5/32 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.198.28/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.198.28/30 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.198.28/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.198.28/30 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.198.40/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.198.40/30 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.198.40/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.198.40/30 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.198.44/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.198.44/30 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.198.44/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.198.44/30 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.198.46/32 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.198.46/32 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.198.46/32 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.198.46/32 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.218.0/29 at Mae-East from Erols (AS6079) ASPATH=6079 10303 INCOMPLETE
209.104.218.0/29 at Mae-East from Priori (AS10303) ASPATH=10303 INCOMPLETE
209.104.218.0/29 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 INCOMPLETE
209.104.218.0/29 at Mae-West from Priori (AS10303) ASPATH=10303 INCOMPLETE

Reserved AS Numbers
-------------------
AS65010 at Mae-East from ANS (AS1673) ASPATH=1673
AS65010 at PacBell from ANS (AS1673) ASPATH=1673

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

1. idc (AS4694) at Mae-West 6 + 146436 = 146442 BGP prefix updates
2. NetKonect (AS6716) at Mae-East 0 + 59583 = 59583 BGP prefix updates
3. SPRINT (AS1239) at Mae-East 35860 + 9225 = 45085 BGP prefix updates
4. internetMCI (AS3561) at Mae-East 28630 + 8393 = 37023 BGP prefix updates
5. internetMCI (AS3561) at AADS 27339 + 7730 = 35069 BGP prefix updates
6. internetMCI (AS3561) at PacBell 24273 + 7939 = 32212 BGP prefix updates
7. BBNplanet (AS1) at Mae-East 15223 + 2952 = 18175 BGP prefix updates
8. AGIS (AS4200) at Mae-East 9196 + 6012 = 15208 BGP prefix updates
9. BBNplanet (AS1) at Mae-West 10772 + 2717 = 13489 BGP prefix updates
10. MainStreet (AS3720) at Mae-West 0 + 12838 = 12838 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 37.00 (185 ann, 5 entries)
2. Argonne(AS683) at AADS 12.00 (156 ann, 13 entries)
3. HLC(AS4565) at AADS 8.85 (531 ann, 60 entries)
4. WCG(AS7911) at PacBell 7.00 (14 ann, 2 entries)
5. Primenet(AS3549) at AADS 6.92 (865 ann, 125 entries)
6. WCG(AS7911) at AADS 6.50 (13 ann, 2 entries)
7. Internex(AS2828) at AADS 5.24 (393 ann, 75 entries)
8. Internex(AS2828) at PacBell 2.84 (213 ann, 75 entries)
9. Above(AS6461) at PacBell 2.59 (541 ann, 209 entries)
10. Pilot(AS3563) at PacBell 2.31 (164 ann, 71 entries)
11. CAIS(AS3491) at AADS 1.79 (1972 ann, 1102 entries)
12. ESnet(AS293) at AADS 1.68 (193 ann, 115 entries)
13. internetMCI(AS3561) at AADS 1.56 (27339 ann, 17540 entries)
14. AT&T(AS6478) at PacBell 1.51 (3595 ann, 2379 entries)
15. GoodNet(AS5696) at AADS 1.47 (958 ann, 650 entries)
16. Alpha(AS4550) at AADS 1.41 (55 ann, 39 entries)
17. internetMCI(AS3561) at PacBell 1.38 (24273 ann, 17590 entries)
18. AT&T(AS6478) at AADS 1.25 (2961 ann, 2375 entries)
19. Merit(AS237) at AADS 1.17 (127 ann, 109 entries)
20. Grid(AS6113) at PacBell 1.07 (1265 ann, 1187 entries)

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

1. SPRINT (1239) at mae-east 3807
2. internetMCI (3561) at aads 893
3. BBNplanet (1) at mae-west 377
4. AGIS (4200) at mae-east 355
5. IBMGlobal (2685) at mae-east 227
6. Grid (6113) at mae-east 208
7. Digex (2548) at mae-west 207
8. CAIS (3491) at aads 162
9. INAP.net (5646) at aads 150
10. AT&T (6478) at pb 138






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