01/15/98 Internet Routing Problems

From: stats@merit.edu
Date: Fri Jan 16 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.
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
---------------------------------------
10.0.0.0/8 at Mae-East from Interpath (AS3407) ASPATH=3407 INCOMPLETE
166.48.225.248/30 at AADS from Merit (AS237) ASPATH=237 INCOMPLETE
192.198.129.128/27 at Mae-East from conxion (AS4544) ASPATH=4544 1760 IGP
192.198.129.128/27 at AADS from conxion (AS4544) ASPATH=4544 1760 IGP
209.17.82.0/29 at Mae-East from Erols (AS6079) ASPATH=6079 10303 7252 IGP
209.17.82.0/29 at Mae-East from Priori (AS10303) ASPATH=10303 7252 IGP
209.17.82.0/29 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 7252 IGP
209.17.82.8/30 at Mae-East from Erols (AS6079) ASPATH=6079 10303 7252 IGP
209.17.82.8/30 at Mae-East from Priori (AS10303) ASPATH=10303 7252 IGP
209.17.82.8/30 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 7252 IGP
209.17.83.0/27 at Mae-East from Erols (AS6079) ASPATH=6079 10303 7252 IGP
209.17.83.0/27 at Mae-East from Priori (AS10303) ASPATH=10303 7252 IGP
209.17.83.0/27 at Mae-East from Dialnet (AS5552) ASPATH=5552 6079 10303 7252 IGP
209.95.130.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 INCOMPLETE

Reserved AS Numbers
-------------------
AS65515 at Mae-East from Digex (AS2548) ASPATH=2548 5415 5415 65515 8207 IGP

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

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

1. Seastrom (AS3066) at Mae-East 0 + 307014 = 307014 BGP prefix updates
2. SPRINT (AS1239) at Mae-East 138012 + 42491 = 180503 BGP prefix updates
3. NetKonect (AS6716) at Mae-East 15 + 174449 = 174464 BGP prefix updates
4. USCyber (AS4136) at Mae-East 0 + 120170 = 120170 BGP prefix updates
5. GetNet (AS5784) at Mae-East 0 + 109747 = 109747 BGP prefix updates
6. internetMCI (AS3561) at AADS 48052 + 19304 = 67356 BGP prefix updates
7. internetMCI (AS3561) at Mae-East 22742 + 9718 = 32460 BGP prefix updates
8. CompuServe (AS4183) at Mae-East 4 + 27020 = 27024 BGP prefix updates
9. telia (AS1299) at Mae-East 46 + 23655 = 23701 BGP prefix updates
10. AGIS (AS4200) at Mae-East 12324 + 8867 = 21191 BGP prefix updates

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

1. NetAxs(AS4969) at Mae-East 13.94 (2801 ann, 201 entries)
2. Interpath(AS3407) at Mae-East 13.71 (466 ann, 34 entries)
3. VisiNet(AS6261) at Mae-East 10.89 (1263 ann, 116 entries)
4. IBMGlobal(AS2685) at AADS 9.14 (1599 ann, 175 entries)
5. AGIS(AS4200) at Mae-East 7.32 (12324 ann, 1683 entries)
6. DREN(AS668) at Mae-East 6.98 (1599 ann, 229 entries)
7. HLC(AS4565) at AADS 6.97 (460 ann, 66 entries)
8. HLC(AS4565) at Mae-East 6.67 (440 ann, 66 entries)
9. SPRINT(AS1239) at Mae-East 6.40 (138012 ann, 21567 entries)
10. ThePlanet(AS5388) at Mae-East 6.00 (486 ann, 81 entries)
11. OLEANE(AS2917) at Mae-East 5.86 (252 ann, 43 entries)
12. Above(AS6461) at Mae-East 5.30 (440 ann, 83 entries)
13. Cableol(AS5089) at Mae-East 5.00 (20 ann, 4 entries)
14. IXI(AS5418) at Mae-East 4.67 (14 ann, 3 entries)
15. CAIS(AS3491) at AADS 4.54 (5276 ann, 1163 entries)
16. AT&T(AS6478) at Mae-East 3.63 (7542 ann, 2079 entries)
17. DISC(AS7170) at Mae-East 3.57 (393 ann, 110 entries)
18. Internex(AS2828) at Mae-East 3.48 (226 ann, 65 entries)
19. EXODUS(AS3967) at AADS 3.44 (351 ann, 102 entries)
20. Internex(AS2828) at AADS 3.29 (214 ann, 65 entries)

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

1. SPRINT (1239) at mae-east 3574
2. internetMCI (3561) at pb 817
3. BBNplanet (1) at mae-west 378
4. AGIS (4200) at mae-east 365
5. IBMGlobal (2685) at mae-east 231
6. Grid (6113) at mae-west 205
7. CAIS (3491) at mae-west 182
8. INAP.net (5646) at mae-west 169
9. Digex (2548) at mae-west 161
10. AT&T (6478) at pb 158






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