10/01/97 Internet Routing Problems

From: stats@merit.edu
Date: Thu Oct 02 1997 - 10:00:13 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.
Send comments and questions to ipma@merit.edu

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Also see http://www.caida.org for more information about Internet statistics
collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
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-East 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
194.72.26.22/32 at Mae-East from INAP.net (AS5646) ASPATH=5646 5646 2907 Incomplete
194.72.26.22/32 at Mae-West from INAP.net (AS5646) ASPATH=5646 2907 Incomplete
194.72.26.22/32 at AADS from INAP.net (AS5646) ASPATH=5646 2907 Incomplete
204.151.108.16/29 at Mae-West from ANS (AS1673) ASPATH=1673 1670 IGP
204.151.108.24/29 at Mae-West from ANS (AS1673) ASPATH=1673 1670 IGP
204.151.108.32/29 at Mae-West from ANS (AS1673) ASPATH=1673 1699 IGP
204.151.184.252/30 at Mae-West from ANS (AS1673) ASPATH=1673 1129 IGP
204.223.87.16/28 at Mae-West from DISA (AS568) ASPATH=568 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 3542 Incomplete
204.223.87.32/28 at Mae-West from DISA (AS568) ASPATH=568 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 3542 Incomplete
204.223.87.48/28 at Mae-West from DISA (AS568) ASPATH=568 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 3542 Incomplete
204.223.87.64/28 at Mae-West from DISA (AS568) ASPATH=568 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 3542 Incomplete
209.62.34.4/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 5009 Incomplete
209.62.34.4/30 at Mae-East from ACSI (AS6467) ASPATH=6467 5009 Incomplete
209.62.34.4/30 at Mae-West from ACSI (AS6467) ASPATH=6467 5009 Incomplete
209.62.34.8/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 5009 Incomplete
209.62.34.8/30 at Mae-East from ACSI (AS6467) ASPATH=6467 5009 Incomplete
209.62.34.8/30 at Mae-West from ACSI (AS6467) ASPATH=6467 5009 Incomplete
209.62.37.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 5009 Incomplete
209.62.37.16/28 at Mae-East from ACSI (AS6467) ASPATH=6467 5009 Incomplete
209.62.37.16/28 at Mae-West from ACSI (AS6467) ASPATH=6467 5009 Incomplete
209.62.45.253/32 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 5009 Incomplete
209.62.45.253/32 at Mae-East from ACSI (AS6467) ASPATH=6467 5009 Incomplete
209.62.45.253/32 at Mae-West from ACSI (AS6467) ASPATH=6467 5009 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. DISA (AS568) at Mae-West 4814 + 6386938 = 6391752 BGP prefix updates
2. idc (AS4694) at Mae-West 17 + 293689 = 293706 BGP prefix updates
3. Grid (AS6113) at Mae-East 1439 + 211023 = 212462 BGP prefix updates
4. Grid (AS6113) at Mae-West 1475 + 200758 = 202233 BGP prefix updates
5. Grid (AS6113) at PacBell 1475 + 200708 = 202183 BGP prefix updates
6. USCyber (AS4136) at Mae-East 28 + 183634 = 183662 BGP prefix updates
7. SPRINT (AS1239) at Mae-East 123368 + 54435 = 177803 BGP prefix updates
8. NetKonect (AS6716) at Mae-East 4 + 157717 = 157721 BGP prefix updates
9. GetNet (AS5784) at Mae-East 0 + 151585 = 151585 BGP prefix updates
10. Interpath (AS3407) at Mae-East 41 + 116379 = 116420 BGP prefix updates

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

1. Genuity(AS3847) at Mae-East 25.51 (28116 ann, 1102 entries)
2. ThePlanet(AS5388) at Mae-East 8.57 (240 ann, 28 entries)
3. conxion(AS4544) at Mae-West 7.67 (23 ann, 3 entries)
4. AGIS(AS4200) at Mae-East 6.49 (11279 ann, 1738 entries)
5. Euro(AS5390) at Mae-East 6.33 (19 ann, 3 entries)
6. conxion(AS4544) at AADS 6.33 (19 ann, 3 entries)
7. SPRINT(AS1239) at Mae-East 6.33 (123368 ann, 19483 entries)
8. Advantis(AS2685) at Mae-West 5.82 (2020 ann, 347 entries)
9. Netcom(AS2551) at Mae-East 5.53 (1874 ann, 339 entries)
10. DREN(AS668) at Mae-East 5.46 (1130 ann, 207 entries)
11. DREN(AS668) at Mae-West 5.45 (1182 ann, 217 entries)
12. DISA(AS568) at Mae-West 5.40 (4814 ann, 891 entries)
13. Nacamar(AS3257) at Mae-West 5.39 (221 ann, 41 entries)
14. Euro(AS5390) at Mae-West 5.33 (16 ann, 3 entries)
15. HLC(AS4565) at Mae-West 5.10 (342 ann, 67 entries)
16. Cableol(AS5089) at Mae-East 5.00 (10 ann, 2 entries)
17. Nacamar(AS3257) at Mae-East 4.45 (187 ann, 42 entries)
18. Digex(AS2548) at Mae-East 4.38 (3778 ann, 863 entries)
19. HLC(AS4565) at Mae-East 3.85 (258 ann, 67 entries)
20. Digex(AS2548) at Mae-West 3.73 (3218 ann, 862 entries)

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

1. SPRINT (1239) at mae-east 3489
2. internetMCI (3561) at aads 630
3. AGIS (4200) at mae-east 422
4. BBNplanet (1) at mae-west 367
5. Grid (6113) at mae-east 226
6. AT&T (6478) at aads 204
7. CWIX (5683) at mae-west 197
8. Digex (2548) at mae-east 155
9. Genuity (3847) at aads 135
10. EUnet (286) at mae-east 124






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