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
---------------------------------------
1 at Mae-East from OurWorld (AS7594) ASPATH=2
1 at Mae-East from OurWorld (AS7594) ASPATH=2
1 at Mae-West from CaryNet (AS4751) ASPATH=2
1 at Mae-West from CaryNet (AS4751) ASPATH=2
1 at PacBell from netrail (AS4006) ASPATH=2
1 at PacBell from netrail (AS4006) ASPATH=2
193.234.249.64/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
2 at Mae-East from OurWorld (AS7594) ASPATH=2
2 at Mae-East from OurWorld (AS7594) ASPATH=2
2 at Mae-West from CaryNet (AS4751) ASPATH=2
2 at Mae-West from CaryNet (AS4751) ASPATH=2
2 at PacBell from netrail (AS4006) ASPATH=2
2 at PacBell from netrail (AS4006) ASPATH=2
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
206.185.236.4/30 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP
206.84.149.20/32 at Mae-East from AGIS (AS4200) ASPATH=4200 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
209.88.14.32/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.64/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.96/28 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
3 at Mae-East from Intermedia (AS6235) ASPATH=2
3 at Mae-West from EUnet (AS286) ASPATH=2
4 at Mae-East from Intermedia (AS6235) ASPATH=5
4 at Mae-West from EUnet (AS286) ASPATH=1
5 at Mae-East from Intermedia (AS6235) ASPATH=6
5 at Mae-East from Intermedia (AS6235) ASPATH=6
5 at Mae-West from EUnet (AS286) ASPATH=6
5 at Mae-West from EUnet (AS286) ASPATH=6
6 at Mae-East from OurWorld (AS7594) ASPATH=1
6 at Mae-West from Intermedia (AS6235) ASPATH=1
Reserved AS Numbers
-------------------
AS64600 at Mae-East from NASA (AS297) ASPATH=297 64600 IGP
AS65000 at Mae-East from internetMCI (AS3561) ASPATH=3561 4230 65000 IGP
AS65515 at Mae-East from internetMCI (AS3561) ASPATH=3561 6849 5415 65515 8207 IGP
AS64600 at Mae-West from NASA (AS297) ASPATH=297 64600 IGP
AS65000 at AADS from internetMCI (AS3561) ASPATH=3561 4230 65000 IGP
AS65515 at AADS from internetMCI (AS3561) ASPATH=3561 6849 5415 65515 8207 IGP
AS65000 at PacBell from internetMCI (AS3561) ASPATH=3561 4230 65000 IGP
AS65515 at PacBell from internetMCI (AS3561) ASPATH=3561 6849 5415 65515 8207 IGP
Largest Sources of BGP Instability
----------------------------------
(announcements + withdraws = total)
1. AS1239 at Mae-East 116634 + 36842 = 153476 BGP prefix updates
2. AS3561 at AADS 95785 + 14751 = 110536 BGP prefix updates
3. AS3561 at Mae-East 48945 + 16501 = 65446 BGP prefix updates
4. AS3561 at PacBell 42479 + 15220 = 57699 BGP prefix updates
5. AS4200 at Mae-East 28404 + 3093 = 31497 BGP prefix updates
6. AS3720 at Mae-West 112 + 29521 = 29633 BGP prefix updates
7. AS4006 at PacBell 0 + 10470 = 10470 BGP prefix updates
8. AS1673 at Mae-East 9315 + 517 = 9832 BGP prefix updates
9. AS6478 at AADS 8083 + 1688 = 9771 BGP prefix updates
10. AS6478 at PacBell 7840 + 1639 = 9479 BGP prefix updates
Instability Ranking of Service Providers
----------------------------------------
(The number of BGP announcements divided by the number
of routing table entries)
1. (AS7911) at PacBell 10.50 (21 ann, 2 entries)
2. (AS7911) at AADS 10.50 (21 ann, 2 entries)
3. (AS3257) at Mae-East 6.93 (527 ann, 76 entries)
4. (AS1239) at Mae-East 5.80 (127225 ann, 21937 entries)
5. (AS3257) at Mae-West 5.69 (421 ann, 74 entries)
6. (AS2548) at Mae-East 5.41 (5970 ann, 1103 entries)
7. (AS7594) at Mae-West 4.39 (786 ann, 179 entries)
8. (AS1673) at Mae-East 4.27 (7516 ann, 1760 entries)
9. (AS7594) at Paix 3.03 (543 ann, 179 entries)
10. (AS7922) at Mae-West 2.89 (26 ann, 9 entries)
11. (AS7922) at Mae-East 2.78 (25 ann, 9 entries)
12. (AS4565) at Mae-West 2.65 (114 ann, 43 entries)
13. (AS2548) at Mae-West 2.44 (2682 ann, 1101 entries)
14. (AS3789) at AADS 2.29 (64 ann, 28 entries)
15. (AS4969) at Mae-East 2.05 (485 ann, 237 entries)
16. (AS4565) at AADS 1.65 (71 ann, 43 entries)
17. (AS4200) at Mae-East 1.64 (3018 ann, 1843 entries)
18. (AS6461) at Mae-West 1.60 (580 ann, 362 entries)
19. (AS3967) at AADS 1.53 (210 ann, 137 entries)
20. (AS5388) at Mae-West 1.43 (119 ann, 83 entries)
Count of Announced Prefixes with AS origin IRR Discrepancies
------------------------------------------------------------
(See http://www.merit.edu/ipma/problems/)
1. (1239) at mae-east 3855
2. (3561) at pb 748
3. (1) at mae-west 416
4. (4200) at mae-east 365
5. (6113) at pb 345
6. (2685) at mae-east 329
7. (2548) at mae-west 321
8. (6478) at pb 241
9. (5646) at aads 210
10. (297) at mae-west 146
This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:13:18 EDT