03/10/98 Internet Routing Problems

From: stats@merit.edu
Date: Wed Mar 11 1998 - 10:00:04 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
---------------------------------------
137.39.133.88/30 at Mae-West from Best (AS3915) ASPATH=3915 INCOMPLETE
144.228.111.4/30 at Mae-West from Best (AS3915) ASPATH=3915 INCOMPLETE
166.48.13.248/30 at Mae-West from Best (AS3915) ASPATH=3915 INCOMPLETE
192.94.212.216/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 4005 INCOMPLETE
194.149.1.173/32 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 4005 INCOMPLETE
194.207.0.128/28 at Mae-West from VBC (AS6320) ASPATH=6320 IGP
194.79.70.173/32 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 4005 INCOMPLETE
198.32.136.37/32 at Mae-West from Best (AS3915) ASPATH=3915 INCOMPLETE
199.88.124.96/27 at Mae-West from Best (AS3915) ASPATH=3915 INCOMPLETE
200.244.175.1/32 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 4005 INCOMPLETE
200.30.42.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.32/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.64/29 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.72/29 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
204.156.170.148/30 at Mae-West from Best (AS3915) ASPATH=3915 INCOMPLETE
204.59.156.4/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 4005 INCOMPLETE
206.54.15.14/32 at Mae-West from Best (AS3915) ASPATH=3915 INCOMPLETE
207.171.204.254/32 at Mae-West from Best (AS3915) ASPATH=3915 INCOMPLETE
207.181.192.1/32 at Mae-West from Best (AS3915) ASPATH=3915 INCOMPLETE
209.88.14.0/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.128/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.240/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.15.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE

Reserved AS Numbers
-------------------
AS64810 at Mae-East from SPRINT (AS1239) ASPATH=1239 685 4134 64810 INCOMPLETE

AS65010 at Mae-East from ANS (AS1673) ASPATH=1673
AS64930 at Mae-East from SPRINT (AS1239) ASPATH=1239 685 4134 4134 4134 64930 IGP

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

1. SPRINT (AS1239) at Mae-East 88158 + 24937 = 113095 BGP prefix updates
2. internetMCI (AS3561) at PacBell 49902 + 24198 = 74100 BGP prefix updates
3. internetMCI (AS3561) at AADS 44169 + 16630 = 60799 BGP prefix updates
4. internetMCI (AS3561) at Mae-East 43490 + 16562 = 60052 BGP prefix updates
5. MainStreet (AS3720) at Mae-West 46 + 53744 = 53790 BGP prefix updates
6. NASA (AS297) at Mae-East 1547 + 49359 = 50906 BGP prefix updates
7. AT&T (AS6478) at PacBell 33241 + 2871 = 36112 BGP prefix updates
8. AT&T (AS6478) at Mae-West 22226 + 7582 = 29808 BGP prefix updates
9. AT&T (AS6478) at AADS 22539 + 2722 = 25261 BGP prefix updates
10. AGIS (AS4200) at Mae-East 10664 + 7994 = 18658 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 47.50 (190 ann, 4 entries)
2. AIMnet(AS3763) at Mae-West 17.78 (907 ann, 51 entries)
3. highway1(AS7922) at Mae-West 14.88 (119 ann, 8 entries)
4. highway1(AS7922) at Mae-East 14.75 (118 ann, 8 entries)
5. AT&T(AS6478) at PacBell 13.84 (33241 ann, 2402 entries)
6. ThePlanet(AS5388) at Mae-West 13.50 (1080 ann, 80 entries)
7. Above(AS6461) at PacBell 10.76 (3001 ann, 279 entries)
8. OurWorld(AS7594) at Mae-West 10.30 (2657 ann, 258 entries)
9. ThePlanet(AS5388) at Mae-East 9.80 (804 ann, 82 entries)
10. VisiNet(AS6261) at Mae-West 9.65 (1670 ann, 173 entries)
11. AT&T(AS6478) at AADS 9.39 (22539 ann, 2401 entries)
12. AT&T(AS6478) at Mae-West 9.25 (22226 ann, 2402 entries)
13. Grid(AS6113) at Mae-East 8.98 (12623 ann, 1405 entries)
14. EXODUS(AS3967) at Mae-West 8.68 (1545 ann, 178 entries)
15. Above(AS6461) at Mae-East 8.52 (2283 ann, 268 entries)
16. WNA(AS2914) at Mae-East 6.47 (8050 ann, 1244 entries)
17. Grid(AS6113) at Mae-West 5.83 (14086 ann, 2415 entries)
18. DISC(AS7170) at Mae-East 5.68 (648 ann, 114 entries)
19. NASA(AS297) at Mae-East 5.58 (1547 ann, 277 entries)
20. GoodNet(AS5696) at Mae-East 5.53 (4041 ann, 731 entries)

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

1. SPRINT (1239) at mae-east 3861
2. internetMCI (3561) at pb 898
3. AGIS (4200) at mae-east 394
4. BBNplanet (1) at mae-west 340
5. Grid (6113) at mae-east 289
6. IBMGlobal (2685) at aads 262
7. Digex (2548) at mae-west 201
8. AT&T (6478) at mae-west 168
9. INAP.net (5646) at mae-west 145
10. CAIS (3491) at mae-west 137






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