11/22/97 Internet Routing Problems

From: stats@merit.edu
Date: Sun Nov 23 1997 - 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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Reserved Network and Host Announcements
---------------------------------------
192.116.222.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
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

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

1. SPRINT (AS1239) at Mae-East 144676 + 48325 = 193001 BGP prefix updates
2. USCyber (AS4136) at Mae-East 16 + 161741 = 161757 BGP prefix updates
3. NetKonect (AS6716) at Mae-East 0 + 156339 = 156339 BGP prefix updates
4. idc (AS4694) at Mae-West 133 + 134828 = 134961 BGP prefix updates
5. GetNet (AS5784) at Mae-East 0 + 117071 = 117071 BGP prefix updates
6. Interpath (AS3407) at Mae-East 99 + 87050 = 87149 BGP prefix updates
7. CAIS (AS3491) at Mae-West 27543 + 9806 = 37349 BGP prefix updates
8. internetMCI (AS3561) at AADS 21091 + 9410 = 30501 BGP prefix updates
9. internetMCI (AS3561) at Mae-East 20524 + 9689 = 30213 BGP prefix updates
10. telia (AS1299) at Mae-East 232 + 23637 = 23869 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 131.78 (5403 ann, 41 entries)
2. VisiNet(AS6261) at Mae-East 75.00 (1275 ann, 17 entries)
3. CAIS(AS3491) at Mae-West 43.58 (27543 ann, 632 entries)
4. VisiNet(AS6261) at Mae-West 20.61 (1278 ann, 62 entries)
5. HLC(AS4565) at Mae-West 14.82 (1008 ann, 68 entries)
6. HLC(AS4565) at Mae-East 14.04 (969 ann, 69 entries)
7. WebSecure(AS6583) at Mae-West 14.00 (28 ann, 2 entries)
8. Cableol(AS5089) at Mae-East 13.75 (55 ann, 4 entries)
9. WebSecure(AS6583) at Mae-East 12.50 (25 ann, 2 entries)
10. WebSecure(AS6583) at AADS 11.00 (22 ann, 2 entries)
11. Intermedia(AS6235) at Mae-East 8.42 (2106 ann, 250 entries)
12. CableInet(AS5462) at Mae-West 7.68 (338 ann, 44 entries)
13. SPRINT(AS1239) at Mae-East 7.15 (144676 ann, 20221 entries)
14. Voicenet(AS3932) at Mae-East 7.02 (372 ann, 53 entries)
15. ICI(AS6561) at Mae-West 6.73 (101 ann, 15 entries)
16. ThePlanet(AS5388) at Mae-West 5.79 (197 ann, 34 entries)
17. AGIS(AS4200) at Mae-East 5.74 (5458 ann, 951 entries)
18. ThePlanet(AS5388) at Mae-East 5.50 (198 ann, 36 entries)
19. dxnet(AS3914) at Mae-East 4.71 (33 ann, 7 entries)
20. DREN(AS668) at Mae-East 4.28 (959 ann, 224 entries)

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

1. SPRINT (1239) at mae-east 3731
2. internetMCI (3561) at aads 635
3. BBNplanet (1) at mae-west 469
4. AGIS (4200) at mae-east 295
5. AT&T (6478) at mae-west 206
6. IBMGlobal (2685) at aads 185
7. Grid (6113) at pb 170
8. Digex (2548) at mae-west 152
9. INAP.net (5646) at mae-west 138
10. CWIX (5683) at mae-east 125






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