05/14/98 Internet Routing Problems

From: stats@merit.edu
Date: Fri May 15 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
192.17.238.128/27 at AADS from UIUC (AS38) ASPATH=38 IGP
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
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
205.215.5.40/30 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
206.185.157.0/30 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP
206.84.149.20/32 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP
206.84.149.30/32 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP
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
209.88.14.192/28 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
209.88.14.32/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
***** 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 77981 + 20370 = 98351 BGP prefix updates
2. SPRINT (AS1239) at Mae-East 74061 + 19816 = 93877 BGP prefix updates
3. internetMCI (AS3561) at Mae-East 49282 + 20698 = 69980 BGP prefix updates
4. internetMCI (AS3561) at PacBell 47122 + 19703 = 66825 BGP prefix updates
5. MainStreet (AS3720) at Mae-West 0 + 46289 = 46289 BGP prefix updates
6. AT&T (AS7018) at AADS 32926 + 2634 = 35560 BGP prefix updates
7. AGIS (AS4200) at Mae-East 15338 + 4534 = 19872 BGP prefix updates
8. BBNplanet (AS1) at Mae-East 12399 + 5326 = 17725 BGP prefix updates
9. BBNplanet (AS1) at Mae-West 9709 + 4756 = 14465 BGP prefix updates
10. AT&T (AS7018) at Mae-West 8367 + 3115 = 11482 BGP prefix updates

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

1. Pilot(AS3563) at PacBell 12.14 (838 ann, 69 entries)
2. AIMnet(AS3763) at Mae-West 9.13 (475 ann, 52 entries)
3. (AS2905) at Mae-East 7.79 (795 ann, 102 entries)
4. OLEANE(AS2917) at Mae-East 7.66 (383 ann, 50 entries)
5. GEOnet(AS3356) at PacBell 4.82 (496 ann, 103 entries)
6. Nacamar(AS3257) at Mae-West 4.76 (352 ann, 74 entries)
7. Nacamar(AS3257) at Mae-East 4.62 (360 ann, 78 entries)
8. EUnet(AS286) at Mae-East 3.99 (3409 ann, 854 entries)
9. AGIS(AS4200) at Mae-East 3.12 (6661 ann, 2137 entries)
10. Pilot(AS3563) at Paix 2.60 (182 ann, 70 entries)
11. OurWorld(AS7594) at Mae-West 2.38 (578 ann, 243 entries)
12. VisiNet(AS6261) at Mae-East 2.15 (605 ann, 281 entries)
13. ThePlanet(AS5388) at Mae-West 2.07 (172 ann, 83 entries)
14. VisiNet(AS6261) at Mae-West 1.87 (523 ann, 280 entries)
15. ANS(AS1673) at Mae-East 1.76 (3050 ann, 1734 entries)
16. Merit(AS237) at AADS 1.75 (192 ann, 110 entries)
17. CAIS(AS3491) at AADS 1.47 (1590 ann, 1079 entries)
18. internetMCI(AS3561) at AADS 1.41 (25053 ann, 17825 entries)
19. OneCall(AS6402) at AADS 1.39 (71 ann, 51 entries)
20. OneCall(AS6402) at PacBell 1.39 (71 ann, 51 entries)

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

1. SPRINT (1239) at mae-east 3940
2. internetMCI (3561) at pb 820
3. BBNplanet (1) at mae-east 453
4. AGIS (4200) at mae-east 399
5. Digex (2548) at mae-west 383
6. AT&T (7018) at aads 281
7. IBMGlobal (2685) at mae-west 256
8. INAP.net (5646) at aads 200
9. CAIS (3491) at aads 179
10. Grid (6113) at pb 173






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