02/20/98 Internet Routing Problems

From: stats@merit.edu
Date: Sat Feb 21 1998 - 10:00:03 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
---------------------------------------
192.168.203.38/32 at AADS from Merit (AS237) ASPATH=237 INCOMPLETE
192.168.203.38/32 at AADS from Merit (AS237) ASPATH=237 INCOMPLETE
194.250.214.0/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.128/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.160/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.192/28 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.208/28 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.224/28 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.240/28 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.32/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.64/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.96/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.12.164.128/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 1299 1299 8516 INCOMPLETE
195.12.164.144/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 1299 1299 8516 INCOMPLETE
195.12.164.248/29 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 1299 1299 8516 INCOMPLETE
195.12.165.0/29 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 1299 1299 8516 INCOMPLETE
198.80.116.192/27 at Mae-East from ANS (AS1673) ASPATH=1673 1670 IGP
198.80.116.192/27 at Mae-West from ANS (AS1673) ASPATH=1673 1670 IGP
198.80.116.192/27 at PacBell from ANS (AS1673) ASPATH=1673 1670 IGP
207.26.64.80/28 at PacBell from ANS (AS1673) ASPATH=1673 1675 IGP

Reserved AS Numbers
-------------------
AS65010 at Mae-East from ANS (AS1673) ASPATH=1673
AS65010 at Mae-West from GoodNet (AS5696) ASPATH=5696 7194 7194 7194 3561 1673
AS65010 at AADS from GoodNet (AS5696) ASPATH=5696 7194 7194 7194 3561 1673
AS65010 at PacBell from ANS (AS1673) ASPATH=1673

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

1. NetKonect (AS6716) at Mae-East 22 + 320539 = 320561 BGP prefix updates
2. idc (AS4694) at Mae-West 7 + 194421 = 194428 BGP prefix updates
3. SPRINT (AS1239) at Mae-East 55942 + 20427 = 76369 BGP prefix updates
4. internetMCI (AS3561) at Mae-East 58630 + 12860 = 71490 BGP prefix updates
5. NetAxs (AS4969) at Mae-East 41954 + 23935 = 65889 BGP prefix updates
6. internetMCI (AS3561) at AADS 34683 + 14692 = 49375 BGP prefix updates
7. internetMCI (AS3561) at PacBell 32868 + 13624 = 46492 BGP prefix updates
8. MainStreet (AS3720) at Mae-West 0 + 41137 = 41137 BGP prefix updates
9. USCyber (AS4136) at Mae-East 2 + 32116 = 32118 BGP prefix updates
10. AGIS (AS4200) at Mae-East 25234 + 6422 = 31656 BGP prefix updates

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

1. NetAxs(AS4969) at Mae-East 127.52 (41954 ann, 329 entries)
2. Cableol(AS5089) at Mae-East 31.50 (126 ann, 4 entries)
3. ICI(AS6561) at Mae-West 21.36 (299 ann, 14 entries)
4. highway1(AS7922) at Mae-West 16.29 (114 ann, 7 entries)
5. AIMnet(AS3763) at Mae-West 15.62 (781 ann, 50 entries)
6. highway1(AS7922) at Mae-East 15.00 (105 ann, 7 entries)
7. AGIS(AS4200) at Mae-East 14.30 (25234 ann, 1764 entries)
8. HLC(AS4565) at Mae-West 9.68 (581 ann, 60 entries)
9. HLC(AS4565) at AADS 9.07 (544 ann, 60 entries)
10. HLC(AS4565) at Mae-East 9.03 (542 ann, 60 entries)
11. WCG(AS7911) at PacBell 9.00 (18 ann, 2 entries)
12. IXI(AS5418) at Mae-East 8.67 (26 ann, 3 entries)
13. Intermedia(AS6235) at Mae-East 7.48 (1616 ann, 216 entries)
14. MIBX(AS6218) at PacBell 7.00 (35 ann, 5 entries)
15. Nacamar(AS3257) at Mae-West 6.82 (225 ann, 33 entries)
16. Internex(AS2828) at Mae-East 6.45 (484 ann, 75 entries)
17. Primenet(AS3549) at AADS 6.42 (802 ann, 125 entries)
18. NASA(AS297) at Mae-East 6.30 (1763 ann, 280 entries)
19. WireHub(AS5496) at Mae-East 6.21 (87 ann, 14 entries)
20. Primenet(AS3549) at Mae-East 5.81 (808 ann, 139 entries)

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

1. SPRINT (1239) at mae-east 3824
2. internetMCI (3561) at aads 885
3. BBNplanet (1) at mae-west 382
4. AGIS (4200) at mae-east 361
5. IBMGlobal (2685) at mae-west 224
6. Digex (2548) at mae-west 208
7. Grid (6113) at pb 204
8. CAIS (3491) at aads 162
9. INAP.net (5646) at aads 146
10. AT&T (6478) at pb 139






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