01/05/98 Internet Routing Problems

From: stats@merit.edu
Date: Tue Jan 06 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
---------------------------------------
192.116.207.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 5486 INCOMPLETE
205.181.249.35/32 at Mae-East from Intermedia (AS6235) ASPATH=6235 5651 6433 IGP
205.181.249.37/32 at Mae-East from Intermedia (AS6235) ASPATH=6235 5651 6433 IGP
209.95.130.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 INCOMPLETE

Reserved AS Numbers
-------------------
AS65515 at Mae-East from SPRINT (AS1239) ASPATH=1239 6453 6846 5415 65515 8207 IGP

AS65515 at Mae-West from Digex (AS2548) ASPATH=2548 5415 5415 5415 65515 8207 IGP

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

1. NetKonect (AS6716) at Mae-East 3 + 83780 = 83783 BGP prefix updates
2. SPRINT (AS1239) at Mae-East 61497 + 14463 = 75960 BGP prefix updates
3. GetNet (AS5784) at Mae-East 0 + 59199 = 59199 BGP prefix updates
4. USCyber (AS4136) at Mae-East 0 + 58007 = 58007 BGP prefix updates
5. internetMCI (AS3561) at AADS 19341 + 9614 = 28955 BGP prefix updates
6. ANS (AS1673) at Mae-East 28018 + 609 = 28627 BGP prefix updates
7. internetMCI (AS3561) at Mae-East 17800 + 9105 = 26905 BGP prefix updates
8. telia (AS1299) at Mae-East 257 + 19447 = 19704 BGP prefix updates
9. CompuServe (AS4183) at Mae-East 1 + 17430 = 17431 BGP prefix updates
10. AGIS (AS4200) at Mae-East 5188 + 4955 = 10143 BGP prefix updates

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

1. IBMGlobal(AS2685) at AADS 22.31 (803 ann, 36 entries)
2. OLEANE(AS2917) at Mae-East 18.88 (774 ann, 41 entries)
3. ANS(AS1673) at Mae-East 16.07 (28018 ann, 1744 entries)
4. Cableol(AS5089) at Mae-East 16.00 (64 ann, 4 entries)
5. HLC(AS4565) at AADS 6.59 (415 ann, 63 entries)
6. HLC(AS4565) at Mae-East 6.19 (390 ann, 63 entries)
7. InterAccess(AS3789) at AADS 3.46 (90 ann, 26 entries)
8. Intermedia(AS6235) at Mae-East 3.13 (721 ann, 230 entries)
9. AGIS(AS4200) at Mae-East 3.00 (5188 ann, 1732 entries)
10. SPRINT(AS1239) at Mae-East 2.86 (61497 ann, 21475 entries)
11. Internex(AS2828) at AADS 2.61 (159 ann, 61 entries)
12. AT&T(AS6478) at Mae-East 2.58 (5252 ann, 2034 entries)
13. Genuity(AS3847) at Mae-East 2.41 (911 ann, 378 entries)
14. Euro(AS5390) at Mae-East 2.40 (12 ann, 5 entries)
15. Internex(AS2828) at Mae-East 2.39 (146 ann, 61 entries)
16. DRA(AS1746) at Mae-East 2.33 (28 ann, 12 entries)
17. Digex(AS2548) at Mae-East 2.31 (2174 ann, 942 entries)
18. HLC(AS4565) at Paix 2.22 (140 ann, 63 entries)
19. DISC(AS7170) at Mae-East 2.06 (331 ann, 161 entries)
20. Genuity(AS3847) at AADS 1.87 (706 ann, 378 entries)

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

1. SPRINT (1239) at mae-east 3626
2. internetMCI (3561) at pb 1023
3. BBNplanet (1) at mae-west 400
4. AGIS (4200) at mae-east 352
5. IBMGlobal (2685) at mae-west 206
6. Grid (6113) at pb 189
7. CAIS (3491) at aads 176
8. Digex (2548) at mae-west 175
9. NASA (297) at mae-west 156
10. INAP.net (5646) at aads 154






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