12/31/97 Internet Routing Problems

From: stats@merit.edu
Date: Thu Jan 01 1998 - 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.
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
---------------------------------------
133.55.0.11/32 at Mae-East from INAP.net (AS5646) ASPATH=5646 2907 IGP
133.55.0.11/32 at AADS from INAP.net (AS5646) ASPATH=5646 2907 IGP
192.116.207.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 5486 INCOMPLETE
205.181.249.35/32 at Mae-East from Intermedia (AS6235) ASPATH=6235 5651 6433 IGP
205.181.249.37/32 at Mae-East from Intermedia (AS6235) ASPATH=6235 5651 6433 IGP
209.100.89.0/27 at Mae-East 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 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 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 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 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 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 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 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 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 5415 5415 65515 8207 IGP

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

1. SPRINT (AS1239) at Mae-East 105736 + 18947 = 124683 BGP prefix updates
2. NetKonect (AS6716) at Mae-East 0 + 114743 = 114743 BGP prefix updates
3. USCyber (AS4136) at Mae-East 0 + 95458 = 95458 BGP prefix updates
4. GetNet (AS5784) at Mae-East 8 + 69198 = 69206 BGP prefix updates
5. internetMCI (AS3561) at AADS 24445 + 11789 = 36234 BGP prefix updates
6. internetMCI (AS3561) at Mae-East 24329 + 10743 = 35072 BGP prefix updates
7. ANS (AS1673) at Mae-East 19850 + 646 = 20496 BGP prefix updates
8. telia (AS1299) at Mae-East 191 + 19162 = 19353 BGP prefix updates
9. CompuServe (AS4183) at Mae-East 0 + 14827 = 14827 BGP prefix updates
10. idc (AS4694) at Mae-West 0 + 13977 = 13977 BGP prefix updates

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

1. IBMGlobal(AS2685) at AADS 13.05 (522 ann, 40 entries)
2. Nacamar(AS3257) at Mae-East 12.31 (788 ann, 64 entries)
3. ANS(AS1673) at Mae-East 11.51 (19850 ann, 1724 entries)
4. HLC(AS4565) at AADS 11.01 (749 ann, 68 entries)
5. OLEANE(AS2917) at Mae-East 10.80 (432 ann, 40 entries)
6. HLC(AS4565) at Mae-East 9.93 (675 ann, 68 entries)
7. INSnet(AS5378) at Mae-East 6.23 (374 ann, 60 entries)
8. INS(AS6660) at Mae-East 6.18 (377 ann, 61 entries)
9. Cableol(AS5089) at Mae-East 6.00 (24 ann, 4 entries)
10. EXODUS(AS3967) at AADS 5.39 (571 ann, 106 entries)
11. SPRINT(AS1239) at Mae-East 4.90 (105736 ann, 21570 entries)
12. EXODUS(AS3967) at Mae-East 4.31 (457 ann, 106 entries)
13. Servint(AS7960) at Mae-East 3.64 (40 ann, 11 entries)
14. HLC(AS4565) at Paix 3.31 (225 ann, 68 entries)
15. EXODUS(AS3967) at Paix 3.01 (319 ann, 106 entries)
16. InterAccess(AS3789) at AADS 2.96 (77 ann, 26 entries)
17. Home(AS6172) at Mae-East 2.90 (200 ann, 69 entries)
18. Internex(AS2828) at AADS 2.85 (171 ann, 60 entries)
19. Digex(AS2548) at Mae-East 2.84 (2362 ann, 832 entries)
20. NetAxs(AS4969) at Mae-East 2.80 (333 ann, 119 entries)

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

1. SPRINT (1239) at mae-east 3581
2. internetMCI (3561) at aads 997
3. BBNplanet (1) at mae-west 408
4. AGIS (4200) at mae-east 342
5. IBMGlobal (2685) at mae-east 222
6. Grid (6113) at pb 188
7. CAIS (3491) at aads 169
8. INAP.net (5646) at aads 164
9. AT&T (6478) at pb 161
10. Digex (2548) at mae-west 159






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