03/29/98 Internet Routing Problems

From: stats@merit.edu
Date: Mon Mar 30 1998 - 10:00:04 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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collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
10.1.0.0/24 at Mae-West from VBC (AS6320) ASPATH=6320 3344 IGP
195.14.168.72/30 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 8486 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
202.163.0.224/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 7589 IGP
202.163.0.52/30 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 7589 INCOMPLETE
202.163.4.0/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 7589 INCOMPLETE
202.163.4.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 7589 INCOMPLETE
206.84.149.20/32 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
209.88.14.240/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.15.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE

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

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

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

1. SPRINT (AS1239) at Mae-East 87496 + 30127 = 117623 BGP prefix updates
2. internetMCI (AS3561) at PacBell 23657 + 9768 = 33425 BGP prefix updates
3. internetMCI (AS3561) at AADS 23147 + 8203 = 31350 BGP prefix updates
4. internetMCI (AS3561) at Mae-East 23026 + 7859 = 30885 BGP prefix updates
5. AT&T (AS6478) at Mae-East 16808 + 990 = 17798 BGP prefix updates
6. MainStreet (AS3720) at Mae-West 1 + 16417 = 16418 BGP prefix updates
7. Digex (AS2548) at Mae-East 9611 + 6539 = 16150 BGP prefix updates
8. Digex (AS2548) at Mae-West 6800 + 6547 = 13347 BGP prefix updates
9. AGIS (AS4200) at Mae-East 11341 + 1376 = 12717 BGP prefix updates
10. BBNplanet (AS1) at Mae-East 8151 + 2114 = 10265 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 186.95 (3739 ann, 20 entries)
2. Cableol(AS5089) at Mae-East 121.00 (484 ann, 4 entries)
3. VBC(AS6320) at Mae-West 26.35 (606 ann, 23 entries)
4. AIMnet(AS3763) at Mae-West 23.37 (1215 ann, 52 entries)
5. highway1(AS7922) at Mae-West 13.75 (110 ann, 8 entries)
6. OurWorld(AS7594) at Mae-West 12.91 (2105 ann, 163 entries)
7. highway1(AS7922) at Mae-East 11.75 (94 ann, 8 entries)
8. Interpath(AS3407) at Mae-East 11.23 (348 ann, 31 entries)
9. Above(AS6461) at PacBell 10.50 (2668 ann, 254 entries)
10. Digex(AS2548) at Mae-East 10.06 (9611 ann, 955 entries)
11. VisiNet(AS6261) at Mae-West 9.29 (1496 ann, 161 entries)
12. Above(AS6461) at Mae-East 7.47 (1898 ann, 254 entries)
13. Digex(AS2548) at Mae-West 7.23 (6800 ann, 940 entries)
14. AT&T(AS6478) at Mae-East 7.10 (16808 ann, 2366 entries)
15. VisiNet(AS6261) at Mae-East 6.75 (1269 ann, 188 entries)
16. AGIS(AS4200) at Mae-East 5.90 (11341 ann, 1922 entries)
17. OurWorld(AS7594) at Paix 5.62 (921 ann, 164 entries)
18. Megsinet(AS7194) at AADS 5.32 (101 ann, 19 entries)
19. NASA(AS297) at Mae-East 5.21 (1469 ann, 282 entries)
20. IBMGlobal(AS2685) at Mae-East 4.84 (4115 ann, 851 entries)

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

1. SPRINT (1239) at mae-east 3913
2. internetMCI (3561) at pb 808
3. BBNplanet (1) at mae-east 408
4. AGIS (4200) at mae-east 392
5. Grid (6113) at pb 331
6. IBMGlobal (2685) at mae-west 288
7. Digex (2548) at mae-west 217
8. AT&T (6478) at pb 188
9. CAIS (3491) at aads 156
10. NASA (297) at mae-west 138






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