05/15/98 Internet Routing Problems

From: stats@merit.edu
Date: Sat May 16 1998 - 10:00:03 EDT


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
---------------------------------------
165.212.20.16/29 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.20.24/29 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.20.8/29 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.200.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.200.80/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.43.0/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.43.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.43.32/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.43.48/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
192.245.161.47/32 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
193.234.249.64/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
194.117.170.240/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
194.68.51.224/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
195.12.164.128/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 INCOMPLETE
195.12.164.144/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 INCOMPLETE
195.12.164.160/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 INCOMPLETE
195.12.164.192/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 INCOMPLETE
195.12.164.248/29 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 INCOMPLETE
195.196.37.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
195.196.37.64/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
195.89.17.81/32 at Mae-East from NetAxs (AS4969) ASPATH=4969 8001 6889 IGP
198.252.178.2/32 at Mae-East from Erols (AS6079) ASPATH=6079 INCOMPLETE
198.252.178.2/32 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 INCOMPLETE
198.80.116.192/27 at Mae-East from ANS (AS1673) ASPATH=1673 1670 IGP
199.5.232.90/32 at Mae-East from Erols (AS6079) ASPATH=6079 INCOMPLETE
199.5.232.90/32 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 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
200.30.42.80/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
205.214.79.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
205.214.79.48/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
205.214.88.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
205.214.94.32/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
205.214.94.64/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
205.215.45.1/32 at Mae-East from netrail (AS4006) ASPATH=4006 IGP
205.215.5.40/30 at Mae-East from netrail (AS4006) ASPATH=4006 IGP
205.215.5.92/30 at Mae-East from netrail (AS4006) ASPATH=4006 IGP
205.215.63.12/30 at Mae-East from netrail (AS4006) ASPATH=4006 IGP
205.215.63.16/30 at Mae-East from netrail (AS4006) ASPATH=4006 IGP
205.215.63.40/30 at Mae-East from netrail (AS4006) ASPATH=4006 IGP
205.215.63.48/30 at Mae-East from netrail (AS4006) ASPATH=4006 IGP
206.141.223.224/27 at AADS from AIS (AS6081) ASPATH=6081 7053 7053 7053 7053 IGP
***** Too many entries. List Truncated! *****

Reserved AS Numbers
-------------------
AS64600 at Mae-East from NASA (AS297) ASPATH=297 64600 IGP

AS65000 at Mae-East from internetMCI (AS3561) ASPATH=3561 4230 65000 IGP

AS64600 at Mae-West from NASA (AS297) ASPATH=297 64600 IGP

AS65000 at AADS from internetMCI (AS3561) ASPATH=3561 4230 65000 IGP

AS65000 at PacBell from internetMCI (AS3561) ASPATH=3561 4230 65000 IGP

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

1. internetMCI (AS3561) at AADS 79933 + 14327 = 94260 BGP prefix updates
2. SPRINT (AS1239) at Mae-East 56383 + 19040 = 75423 BGP prefix updates
3. internetMCI (AS3561) at Mae-East 39219 + 14683 = 53902 BGP prefix updates
4. internetMCI (AS3561) at PacBell 36215 + 14276 = 50491 BGP prefix updates
5. MainStreet (AS3720) at Mae-West 0 + 35728 = 35728 BGP prefix updates
6. AGIS (AS4200) at Mae-East 16223 + 4248 = 20471 BGP prefix updates
7. BBNplanet (AS1) at Mae-East 14327 + 3452 = 17779 BGP prefix updates
8. ANS (AS1673) at Mae-East 11513 + 470 = 11983 BGP prefix updates
9. BBNplanet (AS1) at Mae-West 6648 + 3058 = 9706 BGP prefix updates
10. OurWorld (AS7594) at PacBell 0 + 9177 = 9177 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 11.40 (57 ann, 5 entries)
2. AIMnet(AS3763) at Mae-West 7.89 (418 ann, 53 entries)
3. DISA(AS568) at Mae-West 3.71 (1987 ann, 535 entries)
4. GEOnet(AS3356) at PacBell 3.56 (363 ann, 102 entries)
5. Erols(AS6079) at Mae-East 3.51 (2044 ann, 582 entries)
6. (AS2905) at Mae-East 3.09 (312 ann, 101 entries)
7. OurWorld(AS7594) at Mae-West 2.44 (596 ann, 244 entries)
8. AGIS(AS4200) at Mae-East 2.36 (4915 ann, 2081 entries)
9. internetMCI(AS3561) at PacBell 2.19 (39052 ann, 17811 entries)
10. OLEANE(AS2917) at Mae-East 2.11 (95 ann, 45 entries)
11. VisiNet(AS6261) at Mae-West 2.04 (566 ann, 277 entries)
12. VisiNet(AS6261) at Mae-East 1.73 (479 ann, 277 entries)
13. ANS(AS1673) at Mae-East 1.64 (2838 ann, 1728 entries)
14. Nacamar(AS3257) at Mae-East 1.37 (104 ann, 76 entries)
15. Above(AS6461) at PacBell 1.32 (478 ann, 362 entries)
16. internetMCI(AS3561) at AADS 1.29 (22924 ann, 17814 entries)
17. Dialnet(AS5552) at Mae-East 1.28 (949 ann, 741 entries)
18. Above(AS6461) at AADS 1.21 (438 ann, 362 entries)
19. InterAccess(AS3789) at AADS 1.19 (32 ann, 27 entries)
20. INS(AS6660) at Mae-East 1.18 (46 ann, 39 entries)

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

1. SPRINT (1239) at mae-east 3801
2. internetMCI (3561) at pb 806
3. BBNplanet (1) at mae-east 531
4. AGIS (4200) at mae-east 400
5. Digex (2548) at mae-west 382
6. IBMGlobal (2685) at mae-west 305
7. AT&T (7018) at aads 276
8. INAP.net (5646) at aads 205
9. CAIS (3491) at aads 179
10. Grid (6113) at pb 164






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