05/13/98 Internet Routing Problems

From: stats@merit.edu
Date: Thu May 14 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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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
195.63.113.232/29 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
198.80.116.192/27 at Mae-East from ANS (AS1673) ASPATH=1673 1670 IGP
198.80.116.192/27 at Mae-West from ANS (AS1673) ASPATH=1673 1670 IGP
198.80.116.192/27 at PacBell from ANS (AS1673) ASPATH=1673 1670 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
206.62.12.24/30 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP
206.84.149.20/32 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP
207.26.64.80/28 at Mae-West from ANS (AS1673) ASPATH=1673 1675 IGP
207.26.64.80/28 at PacBell from ANS (AS1673) ASPATH=1673 1675 IGP
207.50.220.16/28 at Mae-West from idc (AS4694) ASPATH=4694 10813 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 88818 + 15525 = 104343 BGP prefix updates
2. SPRINT (AS1239) at Mae-East 62744 + 17306 = 80050 BGP prefix updates
3. internetMCI (AS3561) at Mae-East 42255 + 14992 = 57247 BGP prefix updates
4. internetMCI (AS3561) at PacBell 40778 + 14108 = 54886 BGP prefix updates
5. MainStreet (AS3720) at Mae-West 18 + 50417 = 50435 BGP prefix updates
6. AGIS (AS4200) at Mae-East 26461 + 6756 = 33217 BGP prefix updates
7. BBNplanet (AS1) at Mae-East 13790 + 3903 = 17693 BGP prefix updates
8. OLEANE (AS2917) at Mae-East 16999 + 152 = 17151 BGP prefix updates
9. ANS (AS1673) at Mae-East 10066 + 786 = 10852 BGP prefix updates
10. BBNplanet (AS1) at Mae-West 6261 + 3286 = 9547 BGP prefix updates

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

1. CableInet(AS5462) at Mae-East 55.79 (1562 ann, 28 entries)
2. CableInet(AS5462) at Mae-West 44.83 (1300 ann, 29 entries)
3. (AS2905) at Mae-East 10.68 (1121 ann, 105 entries)
4. AIMnet(AS3763) at Mae-West 9.15 (476 ann, 52 entries)
5. GEOnet(AS3356) at PacBell 3.81 (396 ann, 104 entries)
6. OurWorld(AS7594) at Mae-West 3.00 (726 ann, 242 entries)
7. CAIS(AS3491) at AADS 2.56 (2637 ann, 1032 entries)
8. Nacamar(AS3257) at Mae-East 2.32 (181 ann, 78 entries)
9. ThePlanet(AS5388) at Mae-West 2.21 (188 ann, 85 entries)
10. Above(AS6461) at PacBell 2.18 (773 ann, 354 entries)
11. NetAxs(AS4969) at Mae-East 1.89 (602 ann, 318 entries)
12. Above(AS6461) at AADS 1.80 (638 ann, 354 entries)
13. internetMCI(AS3561) at AADS 1.67 (29740 ann, 17782 entries)
14. ANS(AS1673) at Mae-East 1.66 (2898 ann, 1751 entries)
15. Grid(AS6113) at Mae-East 1.52 (1426 ann, 940 entries)
16. Above(AS6461) at Mae-East 1.38 (488 ann, 354 entries)
17. OurWorld(AS7594) at Paix 1.37 (331 ann, 242 entries)
18. CompuServe(AS4183) at Mae-West 1.33 (77 ann, 58 entries)
19. IOS(AS5000) at Mae-East 1.24 (42 ann, 34 entries)
20. AGIS(AS4200) at Mae-East 1.23 (2480 ann, 2016 entries)

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

1. SPRINT (1239) at mae-east 4053
2. internetMCI (3561) at pb 815
3. BBNplanet (1) at mae-east 497
4. AGIS (4200) at mae-east 398
5. Digex (2548) at mae-west 386
6. IBMGlobal (2685) at mae-west 280
7. AT&T (7018) at aads 270
8. INAP.net (5646) at aads 217
9. Grid (6113) at pb 187
10. CAIS (3491) at aads 174






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