12/16/97 Internet Routing Problems

From: stats@merit.edu
Date: Wed Dec 17 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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collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
133.55.0.11/32 at Mae-East from INAP.net (AS5646) ASPATH=5646 2907 IGP
192.116.222.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.198.129.128/27 at Mae-West from conxion (AS4544) ASPATH=4544 1760 IGP
192.239.22.48/29 at Mae-East from BBNplanet (AS1) ASPATH=1 IGP
192.239.22.48/29 at Mae-West from BBNplanet (AS1) ASPATH=1 IGP
194.207.0.128/28 at Mae-West from VBC (AS6320) ASPATH=6320 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 Mae-West 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 Mae-West 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 Mae-West 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 Mae-West 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 Mae-West 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 Mae-West 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 Mae-West 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 Mae-West 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 Mae-West from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.91.0/27 at AADS from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.95.130.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 Incomplete

Reserved AS Numbers
-------------------
AS65515 at Mae-East from Digex (AS2548) ASPATH=2548 5415 65515 8207 IGP

AS65515 at Mae-West from Digex (AS2548) ASPATH=2548 5415 65515 8207 IGP

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

1. NetKonect (AS6716) at Mae-East 8 + 445051 = 445059 BGP prefix updates
2. GetNet (AS5784) at Mae-East 7 + 436114 = 436121 BGP prefix updates
3. USCyber (AS4136) at Mae-East 0 + 267773 = 267773 BGP prefix updates
4. SPRINT (AS1239) at Mae-East 181286 + 43865 = 225151 BGP prefix updates
5. telia (AS1299) at Mae-East 743 + 88108 = 88851 BGP prefix updates
6. internetMCI (AS3561) at Mae-East 59970 + 13645 = 73615 BGP prefix updates
7. internetMCI (AS3561) at AADS 43707 + 17476 = 61183 BGP prefix updates
8. IBMGlobal (AS2685) at Mae-East 4197 + 54832 = 59029 BGP prefix updates
9. IBMGlobal (AS2685) at AADS 3495 + 54799 = 58294 BGP prefix updates
10. IBMGlobal (AS2685) at Mae-West 805 + 55488 = 56293 BGP prefix updates

Instability Ranking of Service Providers
----------------------------------------
(The number of BGP announcements divided by the number
of routing table entries)

1. WCG(AS7911) at PacBell 27.00 (27 ann, 1 entries)
2. Nacamar(AS3257) at Mae-East 25.53 (1583 ann, 62 entries)
3. Nacamar(AS3257) at Mae-West 24.53 (1521 ann, 62 entries)
4. NetAxs(AS4969) at Mae-East 20.00 (1940 ann, 97 entries)
5. IBMGlobal(AS2685) at AADS 18.30 (3495 ann, 191 entries)
6. OLEANE(AS2917) at Mae-East 12.86 (553 ann, 43 entries)
7. CAIS(AS3491) at Mae-West 11.43 (4309 ann, 377 entries)
8. AT&T(AS6478) at Mae-West 11.33 (22867 ann, 2019 entries)
9. ESnet(AS293) at Mae-East 11.19 (179 ann, 16 entries)
10. SPRINT(AS1239) at Mae-East 8.67 (181286 ann, 20913 entries)
11. CompuServe(AS4183) at Mae-East 8.18 (450 ann, 55 entries)
12. Voicenet(AS3932) at Mae-East 8.00 (416 ann, 52 entries)
13. AT&T(AS6478) at Mae-East 7.96 (16068 ann, 2019 entries)
14. Interpath(AS3407) at Mae-East 7.72 (247 ann, 32 entries)
15. VisiNet(AS6261) at Mae-East 7.47 (754 ann, 101 entries)
16. Netcom(AS2551) at Mae-East 6.70 (2143 ann, 320 entries)
17. AIMnet(AS3763) at Mae-West 6.64 (312 ann, 47 entries)
18. DISC(AS7170) at Mae-East 5.96 (954 ann, 160 entries)
19. EUnet(AS286) at Mae-East 5.95 (6672 ann, 1121 entries)
20. IBMGlobal(AS2685) at Mae-East 5.94 (4197 ann, 707 entries)

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

1. SPRINT (1239) at mae-east 3475
2. internetMCI (3561) at pb 669
3. AGIS (4200) at mae-east 382
4. BBNplanet (1) at mae-east 381
5. CAIS (3491) at aads 195
6. IBMGlobal (2685) at mae-east 190
7. Grid (6113) at pb 188
8. Digex (2548) at mae-west 170
9. AT&T (6478) at aads 166
10. INAP.net (5646) at mae-west 161






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