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
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Also see http://www.caida.org for more information about Internet statistics
collection research efforts.
Reserved Network and Host Announcements
---------------------------------------
193.189.241.0/27 at Mae-West from ANS (AS1673) ASPATH=1673 1667 6805 Incomplete
193.189.241.0/27 at PacBell from ANS (AS1673) ASPATH=1673 1667 6805 Incomplete
199.190.24.24/29 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
199.190.24.8/29 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
199.190.27.144/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
199.190.29.208/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
199.190.30.32/27 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
204.238.35.32/27 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
204.238.35.64/27 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.110.16/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.110.32/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.121.32/27 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.96.112/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.96.128/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.96.144/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.96.16/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.96.160/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.96.176/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.96.192/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.96.208/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.96.224/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.96.32/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.96.48/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.96.64/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.96.80/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.96.96/28 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.97.128/27 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.97.32/27 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.97.64/27 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.97.96/27 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.98.128/27 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.98.160/27 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.98.192/27 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.98.32/27 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.98.64/27 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
205.149.98.96/27 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
206.80.170.204/30 at Mae-West from Grid (AS6113) ASPATH=6113 IGP
206.80.170.204/30 at PacBell from Grid (AS6113) ASPATH=6113 IGP
52/0 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 Incomplete
55.16.6.32/27 at Mae-West from DREN (AS668) ASPATH=668 8174 3381 IGP
Largest Sources of BGP Instability
----------------------------------
(announcements + withdraws = total)
1. idc (AS4694) at Mae-West 7 + 234878 = 234885 BGP prefix updates
2. Grid (AS6113) at Mae-East 3029 + 219105 = 222134 BGP prefix updates
3. NetKonect (AS6716) at Mae-East 15 + 197876 = 197891 BGP prefix updates
4. USCyber (AS4136) at Mae-East 27 + 182350 = 182377 BGP prefix updates
5. Grid (AS6113) at PacBell 3933 + 164507 = 168440 BGP prefix updates
6. Grid (AS6113) at Mae-West 4579 + 155416 = 159995 BGP prefix updates
7. GetNet (AS5784) at Mae-East 0 + 156307 = 156307 BGP prefix updates
8. internetMCI (AS3561) at AADS 41438 + 108052 = 149490 BGP prefix updates
9. DISA (AS568) at Mae-West 3148 + 118526 = 121674 BGP prefix updates
10. SPRINT (AS1239) at Mae-East 79880 + 21474 = 101354 BGP prefix updates
Instability Ranking of Service Providers
----------------------------------------
(The number of BGP announcements divided by the number
of routing table entries)
1. Cableol(AS5089) at Mae-East 427.50 (855 ann, 2 entries)
2. On-Net(AS6792) at Mae-East 63.40 (317 ann, 5 entries)
3. GoodNet(AS5696) at Mae-East 8.49 (3301 ann, 389 entries)
4. DREN(AS668) at Mae-West 7.60 (1717 ann, 226 entries)
5. Nacamar(AS3257) at Mae-East 7.41 (341 ann, 46 entries)
6. VisiNet(AS6261) at Mae-East 7.21 (137 ann, 19 entries)
7. DREN(AS668) at Mae-East 7.03 (1610 ann, 229 entries)
8. Intermedia(AS6235) at Mae-East 6.98 (1236 ann, 177 entries)
9. Netcom(AS2551) at Mae-East 6.19 (2050 ann, 331 entries)
10. ANS(AS1673) at PacBell 5.67 (9921 ann, 1749 entries)
11. Above(AS6461) at PacBell 4.57 (375 ann, 82 entries)
12. Above(AS6461) at Mae-East 4.52 (366 ann, 81 entries)
13. DISC(AS7170) at Mae-East 4.28 (214 ann, 50 entries)
14. Genuity(AS3847) at Mae-East 4.27 (2652 ann, 621 entries)
15. Genuity(AS3847) at Mae-West 4.10 (2545 ann, 620 entries)
16. Genuity(AS3847) at AADS 4.10 (2587 ann, 631 entries)
17. SPRINT(AS1239) at Mae-East 3.99 (79880 ann, 20042 entries)
18. Internex(AS2828) at AADS 3.91 (250 ann, 64 entries)
19. Internex(AS2828) at Mae-East 3.88 (248 ann, 64 entries)
20. Euro(AS5390) at Mae-West 3.75 (15 ann, 4 entries)
Count of Announced Prefixes with AS origin IRR Discrepancies
------------------------------------------------------------
(See http://www.merit.edu/ipma/problems/)
1. SPRINT (1239) at mae-east 3290
2. internetMCI (3561) at mae-east 578
3. CWIX (5683) at mae-east 573
4. BBNplanet (1) at mae-west 403
5. AGIS (4200) at mae-east 402
6. Grid (6113) at mae-east 321
7. Digex (2548) at mae-east 145
8. EUnet (286) at mae-east 128
9. CAIS (3491) at aads 122
10. NASA (297) at mae-west 120
This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:13:16 EDT