List: routing-problems
Subject: 01/20/02 Internet Routing Problems
From: stats () merit ! edu
Date: 2002-01-21 15:00:07
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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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A hypermail archive is available at
http://www.merit.edu/mail.archives/html/routing-problems/
Also see http://www.caida.org for more information about Internet statistics
collection research efforts.
Reserved Network and Host Announcements
(includes prefixes longer than /27 bits)
----------------------------------------
140.139.28.64/27 at Mae-West from AS7170 ASPATH=7170 1527 IGP
140.139.28.64/27 at AADS from AS7170 ASPATH=7170 1527 IGP
140.153.189.0/27 at AADS from AS7170 ASPATH=7170 IGP
203.199.68.192/28 at AADS from AS3967 ASPATH=3967 IGP
203.236.98.224/27 at AADS from AS3967 ASPATH=3967 4766 9522 IGP
204.97.87.128/30 at AADS from AS3967 ASPATH=3967 16474 IGP
206.251.0.80/29 at AADS from AS3967 ASPATH=3967 IGP
206.251.0.96/27 at AADS from AS3967 ASPATH=3967 IGP
206.251.11.64/27 at AADS from AS3967 ASPATH=3967 IGP
206.251.8.0/27 at AADS from AS3967 ASPATH=3967 IGP
206.251.8.32/27 at AADS from AS3967 ASPATH=3967 IGP
207.82.242.48/28 at AADS from AS3967 ASPATH=3967 13362 IGP
208.178.101.128/27 at AADS from AS3967 ASPATH=3967 IGP
208.48.208.112/28 at AADS from AS3967 ASPATH=3967 IGP
208.48.208.96/28 at AADS from AS3967 ASPATH=3967 IGP
208.48.218.192/27 at AADS from AS3967 ASPATH=3967 IGP
208.50.102.64/27 at AADS from AS3967 ASPATH=3967 17201 IGP
208.50.148.32/29 at AADS from AS3967 ASPATH=3967 16474 IGP
208.50.148.40/29 at AADS from AS3967 ASPATH=3967 16474 IGP
208.50.148.48/28 at AADS from AS3967 ASPATH=3967 16474 IGP
208.50.98.112/28 at AADS from AS3967 ASPATH=3967 IGP
209.1.128.88/30 at AADS from AS3967 ASPATH=3967 11643 IGP
209.1.49.160/27 at AADS from AS3967 ASPATH=3967 13362 IGP
209.194.194.0/29 at Mae-West from AS6467 ASPATH=6467 16952 INCOMPLETE
209.194.194.10/32 at Mae-West from AS6467 ASPATH=6467 16952 INCOMPLETE
209.194.194.8/30 at Mae-West from AS6467 ASPATH=6467 16952 INCOMPLETE
210.183.172.112/28 at AADS from AS3967 ASPATH=3967 4766 10034 IGP
216.136.136.32/27 at AADS from AS3967 ASPATH=3967 16840 IGP
216.136.156.64/27 at AADS from AS3967 ASPATH=3967 21855 IGP
216.136.193.192/28 at AADS from AS3967 ASPATH=3967 18850 INCOMPLETE
216.136.217.112/29 at AADS from AS3967 ASPATH=3967 18746 IGP
216.34.13.112/28 at AADS from AS3967 ASPATH=3967 18730 IGP
216.34.13.96/28 at AADS from AS3967 ASPATH=3967 18730 IGP
216.34.143.64/27 at AADS from AS3967 ASPATH=3967 10310 IGP
216.34.53.176/28 at AADS from AS3967 ASPATH=3967 20046 IGP
216.35.8.224/28 at AADS from AS3967 ASPATH=3967 20046 IGP
64.14.1.112/30 at AADS from AS3967 ASPATH=3967 20046 IGP
64.14.12.44/30 at AADS from AS3967 ASPATH=3967 20046 IGP
64.14.212.4/30 at AADS from AS3967 ASPATH=3967 20046 IGP
64.15.129.192/28 at AADS from AS3967 ASPATH=3967 IGP
64.15.129.224/27 at AADS from AS3967 ASPATH=3967 IGP
64.15.130.128/27 at AADS from AS3967 ASPATH=3967 IGP
64.15.160.0/27 at AADS from AS3967 ASPATH=3967 IGP
***** Too many entries. List Truncated! *****
Largest Sources of BGP Instability
----------------------------------
(announcements + withdraws = total)
1. AT&T (AS7018) at Mae-West 6052 + 3981 = 10033 BGP prefix updates
2. AT&T (AS7018) at AADS 5814 + 4079 = 9893 BGP prefix updates
3. UWiscMadison (AS59) at AADS 3447 + 3445 = 6892 BGP prefix updates
4. Verio (AS2914) at AADS 4945 + 809 = 5754 BGP prefix updates
5. WEN (AS4540) at Mae-West 0 + 5682 = 5682 BGP prefix updates
6. AboveNet (AS6461) at Mae-West 2437 + 1395 = 3832 BGP prefix updates
7. MegsInet (AS7194) at AADS 3622 + 0 = 3622 BGP prefix updates
8. Exodus (AS3967) at AADS 2957 + 262 = 3219 BGP prefix updates
9. AboveNet (AS6461) at AADS 2105 + 1027 = 3132 BGP prefix updates
10. NetRail (AS4006) at Mae-West 1873 + 115 = 1988 BGP prefix updates
Instability Ranking of Service Providers
----------------------------------------
(The number of BGP announcements divided by the number
of routing table entries)
1. UWiscMadison(AS59) at AADS 54.13 (1245 ann, 23 entries)
2. MegsInet(AS7194) at AADS 24.70 (1803 ann, 73 entries)
3. AboveNet(AS6461) at AADS 1.29 (6564 ann, 5078 entries)
4. NetRail(AS4006) at Mae-West 1.02 (655 ann, 642 entries)
5. Sunrise(AS6730) at AADS 1.01 (221 ann, 219 entries)
6. UIC(AS6200) at AADS 1.00 (2 ann, 2 entries)
7. Argonne(AS683) at AADS 1.00 (12 ann, 12 entries)
8. Globix(AS4513) at Mae-West 0.58 (156 ann, 271 entries)
9. Verio(AS2914) at AADS 0.45 (3184 ann, 7037 entries)
10. InfoAve(AS2711) at AADS 0.36 (20 ann, 56 entries)
11. ACSI(AS6467) at Mae-West 0.18 (38 ann, 208 entries)
12. AT&T(AS7018) at Mae-West 0.15 (3040 ann, 19866 entries)
13. DISA(AS568) at Mae-West 0.15 (84 ann, 560 entries)
14. AT&T(AS7018) at AADS 0.15 (2971 ann, 19867 entries)
15. AboveNet(AS6461) at Mae-West 0.14 (1449 ann, 10156 entries)
16. AboveNet(AS6461) at Mae-West 0.14 (1377 ann, 10156 entries)
17. IDT(AS5000) at Mae-West 0.08 (2 ann, 26 entries)
18. IDT(AS5000) at AADS 0.07 (2 ann, 28 entries)
19. ConXion(AS4544) at AADS 0.06 (78 ann, 1378 entries)
20. Home(AS6172) at Mae-West 0.04 (34 ann, 796 entries)
Count of Announced Prefixes with AS origin IRR Discrepancies
------------------------------------------------------------
(See http://www.merit.edu/ipma/problems/)
1. AT&T (7018) at pb 4366 7018
2. AboveNet (6461) at aads 658 6461
3. InterNex (2828) at aads 484 2828
4. Exodus (3967) at aads 236 3967
5. Verio (2914) at aads 102 2914
6. NASA (297) at mae-west 100 297
7. ATT-DISC (7170) at aads 89 7170
8. ConXion (4544) at aads 57 4544
9. ACSI (6467) at mae-west 54 6467
10. FibreNet (6259) at mae-west 36 6259
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