12/10/97 Internet Routing Problems

From: stats@merit.edu
Date: Thu Dec 11 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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Also see http://www.caida.org for more information about Internet statistics
collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
133.55.0.11/32 at Mae-East from INAP.net (AS5646) ASPATH=5646 2907 IGP
133.55.0.11/32 at Mae-West from INAP.net (AS5646) ASPATH=5646 2907 IGP
133.55.0.11/32 at AADS from INAP.net (AS5646) ASPATH=5646 2907 IGP
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
194.206.203.0/30 at Mae-East from NetAxs (AS4969) ASPATH=4969 4495 8310 IGP
206.80.170.204/30 at Mae-East from Grid (AS6113) ASPATH=6113 IGP
209.100.89.0/27 at Mae-East from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.0/27 at AADS from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.128/27 at Mae-East from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.128/27 at AADS from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.160/27 at Mae-East from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.160/27 at AADS from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.192/27 at Mae-East from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.192/27 at AADS from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.224/27 at Mae-East from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.224/27 at AADS from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.32/27 at Mae-East from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.32/27 at AADS from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.64/27 at Mae-East from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.64/27 at AADS from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.96/27 at Mae-East from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.96/27 at AADS from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.91.0/27 at Mae-East from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.91.0/27 at AADS from INAP.net (AS5646) ASPATH=5646 10268 IGP
52/0 at Mae-East from telia (AS1299) ASPATH=1299 1299 1299 1299 1299 3301 3307 Incomplete

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

1. NetKonect (AS6716) at Mae-East 0 + 667898 = 667898 BGP prefix updates
2. GetNet (AS5784) at Mae-East 30 + 487042 = 487072 BGP prefix updates
3. USCyber (AS4136) at Mae-East 20 + 281781 = 281801 BGP prefix updates
4. SPRINT (AS1239) at Mae-East 209053 + 27106 = 236159 BGP prefix updates
5. idc (AS4694) at Mae-West 14 + 200353 = 200367 BGP prefix updates
6. CompuServe (AS4183) at Mae-East 350 + 137491 = 137841 BGP prefix updates
7. internetMCI (AS3561) at Mae-East 124596 + 10574 = 135170 BGP prefix updates
8. CAIS (AS3491) at Mae-West 75817 + 49341 = 125158 BGP prefix updates
9. telia (AS1299) at Mae-East 445 + 98566 = 99011 BGP prefix updates
10. BBNplanet (AS1) at Mae-East 71895 + 7207 = 79102 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 64.36 (75817 ann, 1178 entries)
2. NetAxs(AS4969) at Mae-East 62.76 (6464 ann, 103 entries)
3. Voicenet(AS3932) at Mae-East 23.02 (1197 ann, 52 entries)
4. Intermedia(AS6235) at Mae-East 19.01 (4581 ann, 241 entries)
5. BBNplanet(AS1) at Mae-East 14.47 (71895 ann, 4970 entries)
6. OLEANE(AS2917) at Mae-East 14.44 (621 ann, 43 entries)
7. Priori(AS10303) at Mae-East 14.12 (240 ann, 17 entries)
8. INS(AS6660) at Mae-East 14.02 (855 ann, 61 entries)
9. ANS(AS1673) at Mae-East 12.33 (21289 ann, 1727 entries)
10. LinkAGE(AS4058) at Mae-East 12.00 (240 ann, 20 entries)
11. INSnet(AS5378) at Mae-East 11.89 (678 ann, 57 entries)
12. DISC(AS7170) at Mae-East 11.89 (1915 ann, 161 entries)
13. Erols(AS6079) at Mae-East 10.37 (280 ann, 27 entries)
14. SPRINT(AS1239) at Mae-East 10.08 (209053 ann, 20730 entries)
15. Dialnet(AS5552) at Mae-East 9.82 (982 ann, 100 entries)
16. DREN(AS668) at Mae-East 9.74 (2298 ann, 236 entries)
17. WNA(AS2914) at Mae-East 9.71 (10344 ann, 1065 entries)
18. dxnet(AS3914) at Mae-East 9.29 (65 ann, 7 entries)
19. Nacamar(AS3257) at Mae-East 9.16 (669 ann, 73 entries)
20. OneCall(AS6402) at Mae-East 9.00 (594 ann, 66 entries)

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

1. SPRINT (1239) at mae-east 3666
2. internetMCI (3561) at mae-east 579
3. BBNplanet (1) at mae-west 367
4. AGIS (4200) at mae-east 271
5. IBMGlobal (2685) at aads 205
6. Grid (6113) at pb 181
7. AT&T (6478) at mae-west 160
8. CAIS (3491) at mae-west 158
9. INAP.net (5646) at aads 157
10. Digex (2548) at mae-west 149






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