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
---------------------------------------
172.16.0.0/16 at Mae-East from Primenet (AS3549) ASPATH=3549 IGP
172.16.0.0/16 at Mae-East from Dialnet (AS5552) ASPATH=5552 3549 IGP
172.16.0.0/16 at Mae-West from Primenet (AS3549) ASPATH=3549 IGP
172.16.0.0/16 at AADS from Primenet (AS3549) ASPATH=3549 IGP
195.101.148.0/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.0/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.0/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.128/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.128/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.128/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.160/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.160/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.160/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.192/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.192/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.192/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.224/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.224/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.224/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.32/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.32/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.32/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.64/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.64/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.64/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.96/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.96/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.101.148.96/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.0/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.0/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.0/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.128/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.128/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.128/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.160/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.160/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.160/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.192/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.192/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.192/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.224/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.224/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.224/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.32/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.32/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.32/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.64/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.64/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.64/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.96/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.96/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.96/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
198.80.116.192/27 at Mae-East from ANS (AS1673) ASPATH=1673 1670 IGP
200.30.42.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.32/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.64/29 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.72/29 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.80/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
206.84.149.20/32 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP
207.26.64.80/28 at Mae-East from ANS (AS1673) ASPATH=1673 1324 IGP
207.26.64.80/28 at Mae-West from ANS (AS1673) ASPATH=1673 1675 IGP
207.26.64.80/28 at PacBell from ANS (AS1673) ASPATH=1673 1675 IGP
209.88.14.0/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.128/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.240/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.15.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
24.235.29.4/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 7333 IGP
24.235.29.4/30 at Mae-East from ACSI (AS6467) ASPATH=6467 7333 IGP
24.235.29.4/30 at Mae-West from ACSI (AS6467) ASPATH=6467 7333 IGP
Reserved AS Numbers
-------------------
AS64600 at Mae-East from NASA (AS297) ASPATH=297 64600 IGP
AS65350 at Mae-East from VisiNet (AS6261) ASPATH=6261 7594 65350 7706 4802 INCOMPLETE
AS64600 at Mae-West from NASA (AS297) ASPATH=297 64600 IGP
AS65350 at Mae-West from CAIS (AS3491) ASPATH=3491 6261 7594 65350 7706 4802 INCOMPLETE
AS65350 at AADS from CAIS (AS3491) ASPATH=3491 6261 7594 65350 7706 4802 INCOMPLETE
Largest Sources of BGP Instability
----------------------------------
(announcements + withdraws = total)
1. SPRINT (AS1239) at Mae-East 117574 + 21687 = 139261 BGP prefix updates
2. internetMCI (AS3561) at AADS 74301 + 21277 = 95578 BGP prefix updates
3. internetMCI (AS3561) at PacBell 57130 + 25107 = 82237 BGP prefix updates
4. internetMCI (AS3561) at Mae-East 51221 + 20880 = 72101 BGP prefix updates
5. Nacamar (AS3257) at Mae-West 24650 + 24663 = 49313 BGP prefix updates
6. MainStreet (AS3720) at Mae-West 11 + 32200 = 32211 BGP prefix updates
7. ANS (AS1673) at Mae-East 27156 + 1127 = 28283 BGP prefix updates
8. AT&T (AS6478) at AADS 19107 + 2751 = 21858 BGP prefix updates
9. AT&T (AS6478) at PacBell 17517 + 2757 = 20274 BGP prefix updates
10. AT&T (AS6478) at Mae-East 16986 + 2916 = 19902 BGP prefix updates
Instability Ranking of Service Providers
----------------------------------------
(The number of BGP announcements divided by the number
of routing table entries)
1. ANS(AS1673) at Mae-East 63.30 (27156 ann, 429 entries)
2. Cableol(AS5089) at Mae-East 34.75 (139 ann, 4 entries)
3. u-net(AS5669) at Mae-West 32.78 (295 ann, 9 entries)
4. AIMnet(AS3763) at Mae-West 16.67 (867 ann, 52 entries)
5. IPF(AS5409) at Mae-East 16.43 (460 ann, 28 entries)
6. DISC(AS7170) at Mae-East 12.87 (1905 ann, 148 entries)
7. OLEANE(AS2917) at Mae-East 12.87 (592 ann, 46 entries)
8. highway1(AS7922) at Mae-West 11.75 (94 ann, 8 entries)
9. u-net(AS5669) at Paix 11.56 (104 ann, 9 entries)
10. Megsinet(AS7194) at AADS 10.32 (196 ann, 19 entries)
11. highway1(AS7922) at Mae-East 9.78 (88 ann, 9 entries)
12. AGIS(AS4200) at Mae-East 9.62 (18735 ann, 1947 entries)
13. VBC(AS6320) at Mae-West 8.38 (201 ann, 24 entries)
14. GoodNet(AS5696) at Mae-East 6.52 (4513 ann, 692 entries)
15. GoodNet(AS5696) at AADS 5.73 (3811 ann, 665 entries)
16. Netcom(AS2551) at AADS 5.69 (1798 ann, 316 entries)
17. GoodNet(AS5696) at Mae-West 5.65 (3643 ann, 645 entries)
18. Netcom(AS2551) at Mae-East 5.52 (1732 ann, 314 entries)
19. SPRINT(AS1239) at Mae-East 5.46 (117574 ann, 21532 entries)
20. AT&T(AS6478) at AADS 5.34 (19107 ann, 3575 entries)
Count of Announced Prefixes with AS origin IRR Discrepancies
------------------------------------------------------------
(See http://www.merit.edu/ipma/problems/)
1. SPRINT (1239) at mae-east 4035
2. internetMCI (3561) at mae-east 755
3. BBNplanet (1) at mae-west 424
4. AGIS (4200) at mae-east 399
5. Grid (6113) at pb 351
6. IBMGlobal (2685) at mae-east 275
7. Digex (2548) at mae-west 217
8. AT&T (6478) at pb 206
9. INAP.net (5646) at aads 166
10. CAIS (3491) at aads 118
This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:13:18 EDT