03/03/98 Internet Routing Problems

From: stats@merit.edu
Date: Wed Mar 04 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
---------------------------------------
194.250.214.128/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.128/27 at Mae-West 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 Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.160/27 at Mae-West 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 Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.192/28 at Mae-West 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 Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.208/28 at Mae-West 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 Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.224/28 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.224/28 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.64/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.64/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.64/27 at PacBell from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.67.73.160/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
207.26.64.80/28 at Mae-East from ANS (AS1673) ASPATH=1673 1324 IGP
207.26.64.80/28 at Mae-West from ANS (AS1673) ASPATH=1673 1675 IGP
207.26.64.80/28 at PacBell from ANS (AS1673) ASPATH=1673 1675 IGP

Reserved AS Numbers
-------------------
AS64810 at Mae-East from SPRINT (AS1239) ASPATH=1239 685 4134 64810 INCOMPLETE

AS65010 at Mae-East from ANS (AS1673) ASPATH=1673
AS64930 at Mae-East from SPRINT (AS1239) ASPATH=1239 685 4134 4134 4134 64930 IGP

AS65010 at PacBell from ANS (AS1673) ASPATH=1673

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

1. BBNplanet (AS1) at Mae-East 160185 + 2893 = 163078 BGP prefix updates
2. SPRINT (AS1239) at Mae-East 94676 + 17490 = 112166 BGP prefix updates
3. internetMCI (AS3561) at PacBell 50695 + 29196 = 79891 BGP prefix updates
4. internetMCI (AS3561) at Mae-East 49882 + 12709 = 62591 BGP prefix updates
5. MainStreet (AS3720) at Mae-West 5 + 57211 = 57216 BGP prefix updates
6. INX (AS8218) at Mae-East 122 + 48664 = 48786 BGP prefix updates
7. Iconnet (AS3951) at Mae-East 376 + 47691 = 48067 BGP prefix updates
8. Iconnet (AS3951) at Mae-West 234 + 47620 = 47854 BGP prefix updates
9. Iconnet (AS3951) at AADS 225 + 47618 = 47843 BGP prefix updates
10. Iconnet (AS3951) at PacBell 197 + 47631 = 47828 BGP prefix updates

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

1. Cableol(AS5089) at Mae-East 47.00 (188 ann, 4 entries)
2. BBNplanet(AS1) at Mae-East 30.46 (160185 ann, 5259 entries)
3. OLEANE(AS2917) at Mae-East 24.93 (1047 ann, 42 entries)
4. Digex(AS2548) at Mae-East 21.25 (19532 ann, 919 entries)
5. AIMnet(AS3763) at Mae-West 19.90 (995 ann, 50 entries)
6. Digex(AS2548) at Mae-West 18.37 (16883 ann, 919 entries)
7. highway1(AS7922) at Mae-West 17.12 (137 ann, 8 entries)
8. IPF(AS5409) at Mae-East 15.06 (542 ann, 36 entries)
9. highway1(AS7922) at Mae-East 14.88 (119 ann, 8 entries)
10. NetAxs(AS4969) at Mae-East 11.98 (2337 ann, 195 entries)
11. u-net(AS5669) at Mae-West 11.25 (90 ann, 8 entries)
12. Intermedia(AS6235) at Mae-East 9.63 (2052 ann, 213 entries)
13. Above(AS6461) at Mae-East 9.17 (2374 ann, 259 entries)
14. HLC(AS4565) at AADS 8.88 (639 ann, 72 entries)
15. netrail(AS4006) at Mae-East 7.86 (173 ann, 22 entries)
16. VisiNet(AS6261) at Mae-East 6.56 (1082 ann, 165 entries)
17. GoodNet(AS5696) at Mae-East 6.40 (4628 ann, 723 entries)
18. HLC(AS4565) at Mae-East 6.28 (452 ann, 72 entries)
19. EXODUS(AS3967) at Mae-West 6.00 (1403 ann, 234 entries)
20. HLC(AS4565) at Mae-West 5.89 (424 ann, 72 entries)

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

1. SPRINT (1239) at mae-east 4073
2. internetMCI (3561) at pb 912
3. BBNplanet (1) at mae-west 367
4. AGIS (4200) at mae-east 284
5. IBMGlobal (2685) at mae-west 261
6. Grid (6113) at pb 208
7. Digex (2548) at mae-west 187
8. AT&T (6478) at mae-west 168
9. INAP.net (5646) at mae-west 149
10. CAIS (3491) at aads 119






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