11/28/97 Internet Routing Problems

From: stats@merit.edu
Date: Sat Nov 29 1997 - 10:00:05 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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Reserved Network and Host Announcements
---------------------------------------
192.116.222.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
193.235.137.16/28 at Mae-East from telia (AS1299) ASPATH=1299 1299 1299 1299 1299 3301 Incomplete
193.235.137.32/28 at Mae-East from telia (AS1299) ASPATH=1299 1299 1299 1299 1299 3301 Incomplete
194.207.0.128/28 at Mae-West from VBC (AS6320) ASPATH=6320 IGP
206.80.170.204/30 at Mae-East from Grid (AS6113) ASPATH=6113 IGP
206.80.170.204/30 at Mae-West from Grid (AS6113) ASPATH=6113 IGP
207.212.14.32/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5672 10501 IGP
209.172.73.248/29 at Mae-East from GoodNet (AS5696) ASPATH=5696 6461 10245 IGP
209.172.73.248/29 at Mae-East from Above (AS6461) ASPATH=6461 10245 IGP
209.172.73.248/29 at Mae-West from Above (AS6461) ASPATH=6461 10245 IGP
209.172.73.248/29 at AADS from GoodNet (AS5696) ASPATH=5696 6461 10245 IGP

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

1. idc (AS4694) at Mae-West 291 + 190084 = 190375 BGP prefix updates
2. NetKonect (AS6716) at Mae-East 0 + 140858 = 140858 BGP prefix updates
3. GetNet (AS5784) at Mae-East 0 + 113403 = 113403 BGP prefix updates
4. SPRINT (AS1239) at Mae-East 76071 + 22421 = 98492 BGP prefix updates
5. USCyber (AS4136) at Mae-East 0 + 96387 = 96387 BGP prefix updates
6. CompuServe (AS4183) at Mae-East 0 + 94841 = 94841 BGP prefix updates
7. internetMCI (AS3561) at AADS 42610 + 18875 = 61485 BGP prefix updates
8. internetMCI (AS3561) at Mae-East 39382 + 17663 = 57045 BGP prefix updates
9. Interpath (AS3407) at Mae-East 138 + 55401 = 55539 BGP prefix updates
10. telia (AS1299) at Mae-East 541 + 47529 = 48070 BGP prefix updates

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

1. CAIS(AS3491) at Mae-West 43.14 (30154 ann, 699 entries)
2. NASA(AS297) at Mae-East 33.89 (9659 ann, 285 entries)
3. HLC(AS4565) at Mae-West 12.93 (905 ann, 70 entries)
4. AGIS(AS4200) at Mae-East 12.62 (12332 ann, 977 entries)
5. ThePlanet(AS5388) at Mae-East 12.11 (436 ann, 36 entries)
6. HLC(AS4565) at AADS 11.99 (839 ann, 70 entries)
7. HLC(AS4565) at Mae-East 11.96 (837 ann, 70 entries)
8. NASA(AS297) at Mae-West 11.19 (10194 ann, 911 entries)
9. ThePlanet(AS5388) at Mae-West 10.85 (369 ann, 34 entries)
10. WebSecure(AS6583) at Mae-East 9.50 (19 ann, 2 entries)
11. GoodNet(AS5696) at AADS 9.46 (2546 ann, 269 entries)
12. CWIX(AS5683) at Mae-West 8.96 (11577 ann, 1292 entries)
13. CableInet(AS5462) at Mae-West 8.66 (381 ann, 44 entries)
14. WebSecure(AS6583) at Mae-West 8.50 (17 ann, 2 entries)
15. WebSecure(AS6583) at AADS 8.00 (16 ann, 2 entries)
16. OLEANE(AS2917) at Mae-East 6.93 (284 ann, 41 entries)
17. Intermedia(AS6235) at Mae-East 6.83 (1613 ann, 236 entries)
18. AT&T(AS6478) at Mae-West 6.81 (13270 ann, 1949 entries)
19. Nacamar(AS3257) at Mae-West 5.59 (285 ann, 51 entries)
20. INX(AS8218) at Mae-East 5.35 (294 ann, 55 entries)

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

1. SPRINT (1239) at mae-east 3489
2. internetMCI (3561) at aads 577
3. INAP.net (5646) at aads 383
4. BBNplanet (1) at mae-east 374
5. AGIS (4200) at mae-east 283
6. AT&T (6478) at pb 211
7. IBMGlobal (2685) at aads 193
8. CWIX (5683) at mae-west 181
9. Grid (6113) at mae-east 173
10. Digex (2548) at mae-west 157






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