09/16/97 Internet Routing Problems

From: stats@merit.edu
Date: Wed Sep 17 1997 - 10:00:04 EDT


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
---------------------------------------
152.168.5.0/27 at Mae-West from ANS (AS1673) ASPATH=1673 689 2056 IGP
152.168.5.32/27 at Mae-West from ANS (AS1673) ASPATH=1673 689 2056 IGP
152.168.5.64/27 at Mae-West from ANS (AS1673) ASPATH=1673 689 2056 IGP
152.168.5.96/27 at Mae-West from ANS (AS1673) ASPATH=1673 689 2056 IGP
192.116.206.112/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.206.128/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.206.192/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.206.80/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.206.96/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.207.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.207.48/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.207.64/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.213.48/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.226.64/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.226.96/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.221.5.240/29 at Mae-West from BBNplanet (AS1) ASPATH=1 IGP
193.189.241.0/27 at Mae-East from ANS (AS1673) ASPATH=1673 1667 6805 Incomplete
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
198.60.153.49/32 at Mae-East from GoodNet (AS5696) ASPATH=5696 Incomplete
198.60.153.49/32 at Mae-West from GoodNet (AS5696) ASPATH=5696 Incomplete
198.60.153.49/32 at AADS from GoodNet (AS5696) ASPATH=5696 Incomplete
2/8 at Mae-East from BBNplanet (AS1) ASPATH=1 Incomplete
2/8 at Mae-West from BBNplanet (AS1) ASPATH=1 Incomplete
205.198.78.32/27 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP
207.227.0.216/30 at AADS from INAP.net (AS5646) ASPATH=5646 38 IGP
209.100.89.0/27 at Mae-East from INAP.net (AS5646) ASPATH=5646 5646 10268 IGP
209.100.89.0/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 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 5646 10268 IGP
209.100.89.128/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 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 5646 10268 IGP
209.100.89.160/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 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 5646 10268 IGP
209.100.89.192/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 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 5646 10268 IGP
209.100.89.224/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 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 5646 10268 IGP
209.100.89.32/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 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 5646 10268 IGP
209.100.89.64/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 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 5646 10268 IGP
209.100.89.96/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 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 5646 10268 IGP
209.100.91.0/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 5646 10268 IGP
209.100.91.0/27 at AADS from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.69.36.128/29 at Mae-East from AGIS (AS4200) ASPATH=4200 7058 IGP
209.69.36.136/29 at Mae-East from AGIS (AS4200) ASPATH=4200 7058 IGP
209.69.36.152/29 at Mae-East from AGIS (AS4200) ASPATH=4200 7058 IGP
209.69.36.16/29 at Mae-East from AGIS (AS4200) ASPATH=4200 7058 IGP
209.69.45.64/27 at Mae-East from AGIS (AS4200) ASPATH=4200 7058 IGP

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

1. idc (AS4694) at Mae-West 30 + 238641 = 238671 BGP prefix updates
2. USCyber (AS4136) at Mae-East 19 + 185146 = 185165 BGP prefix updates
3. GetNet (AS5784) at Mae-East 0 + 183603 = 183603 BGP prefix updates
4. Grid (AS6113) at Mae-East 617 + 152731 = 153348 BGP prefix updates
5. NetKonect (AS6716) at Mae-East 6 + 152371 = 152377 BGP prefix updates
6. Grid (AS6113) at PacBell 425 + 147975 = 148400 BGP prefix updates
7. Grid (AS6113) at Mae-West 409 + 145980 = 146389 BGP prefix updates
8. internetMCI (AS3561) at AADS 30197 + 115843 = 146040 BGP prefix updates
9. Interpath (AS3407) at Mae-East 6 + 90752 = 90758 BGP prefix updates
10. DISA (AS568) at Mae-West 5559 + 81562 = 87121 BGP prefix updates

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

1. Euro(AS5390) at Mae-East 26.00 (26 ann, 1 entries)
2. GoodNet(AS5696) at AADS 16.48 (4632 ann, 281 entries)
3. GoodNet(AS5696) at Mae-West 15.33 (4691 ann, 306 entries)
4. DISC(AS7170) at Mae-East 13.69 (657 ann, 48 entries)
5. conxion(AS4544) at Mae-West 11.67 (35 ann, 3 entries)
6. DREN(AS668) at Mae-East 10.97 (2226 ann, 203 entries)
7. CWIX(AS5683) at Mae-West 10.14 (12891 ann, 1271 entries)
8. GoodNet(AS5696) at Mae-East 9.72 (2956 ann, 304 entries)
9. CWIX(AS5683) at Mae-East 9.53 (12044 ann, 1264 entries)
10. CWIX(AS5683) at Mae-West 9.42 (11970 ann, 1271 entries)
11. CWIX(AS5683) at Mae-East 9.33 (11797 ann, 1264 entries)
12. Digex(AS2548) at Mae-East 7.58 (4610 ann, 608 entries)
13. INS(AS6660) at Mae-East 6.99 (496 ann, 71 entries)
14. DISA(AS568) at Mae-West 6.38 (5288 ann, 829 entries)
15. Digex(AS2548) at Mae-West 6.22 (3792 ann, 610 entries)
16. DREN(AS668) at Mae-West 6.04 (1257 ann, 208 entries)
17. Dialnet(AS5552) at Mae-East 5.88 (453 ann, 77 entries)
18. Grid(AS6113) at PacBell 5.85 (4731 ann, 809 entries)
19. INSnet(AS5378) at Mae-East 5.63 (383 ann, 68 entries)
20. InterAccess(AS3789) at AADS 5.47 (104 ann, 19 entries)

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

1. SPRINT (1239) at mae-east 3564
2. internetMCI (3561) at aads 735
3. AGIS (4200) at mae-east 457
4. BBNplanet (1) at mae-west 413
5. Grid (6113) at mae-east 320
6. CWIX (5683) at mae-west 186
7. CAIS (3491) at aads 134
8. Digex (2548) at mae-west 132
9. EUnet (286) at mae-east 128
10. NASA (297) at mae-west 112






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