05/20/98 Internet Routing Problems

From: stats@merit.edu
Date: Thu May 21 1998 - 10:00:03 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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Also see http://www.caida.org for more information about Internet statistics
collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
144.228.146.48/30 at Mae-East from EXODUS (AS3967) ASPATH=3967 1852 IGP
144.228.146.48/30 at Mae-West from EXODUS (AS3967) ASPATH=3967 1852 IGP
144.228.146.48/30 at Mae-West from EXODUS (AS3967) ASPATH=3967 1852 IGP
144.228.146.48/30 at AADS from EXODUS (AS3967) ASPATH=3967 1852 IGP
144.228.170.4/30 at Mae-East from EXODUS (AS3967) ASPATH=3967 1852 IGP
144.228.170.4/30 at Mae-West from EXODUS (AS3967) ASPATH=3967 1852 IGP
144.228.170.4/30 at Mae-West from EXODUS (AS3967) ASPATH=3967 1852 IGP
144.228.170.4/30 at AADS from EXODUS (AS3967) ASPATH=3967 1852 IGP
165.212.20.16/29 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.20.16/29 at Mae-East from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.20.16/29 at Mae-West from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.20.24/29 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.20.24/29 at Mae-East from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.20.24/29 at Mae-West from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.20.8/29 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.20.8/29 at Mae-East from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.20.8/29 at Mae-West from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.200.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.200.16/28 at Mae-East from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.200.16/28 at Mae-West from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.200.80/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.200.80/28 at Mae-East from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.200.80/28 at Mae-West from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.43.0/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.43.0/28 at Mae-East from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.43.0/28 at Mae-West from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.43.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.43.16/28 at Mae-East from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.43.16/28 at Mae-West from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.43.32/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.43.32/28 at Mae-East from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.43.32/28 at Mae-West from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.43.48/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
165.212.43.48/28 at Mae-East from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
165.212.43.48/28 at Mae-West from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
192.245.161.47/32 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
192.245.161.47/32 at Mae-East from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
192.245.161.47/32 at Mae-West from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
192.35.219.0/28 at Mae-East from EXODUS (AS3967) ASPATH=3967 1852 IGP
192.35.219.0/28 at Mae-West from EXODUS (AS3967) ASPATH=3967 1852 IGP
192.35.219.0/28 at Mae-West from EXODUS (AS3967) ASPATH=3967 1852 IGP
192.35.219.0/28 at AADS from EXODUS (AS3967) ASPATH=3967 1852 IGP
192.35.219.0/28 at Paix from EXODUS (AS3967) ASPATH=3967 1852 IGP
193.234.249.64/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
194.117.170.240/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
194.68.51.224/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
195.12.164.128/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 INCOMPLETE
195.12.164.144/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 INCOMPLETE
195.12.164.160/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 INCOMPLETE
195.12.164.192/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 INCOMPLETE
195.12.164.248/29 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 8516 INCOMPLETE
195.196.29.48/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
195.196.37.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
195.196.37.64/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
195.232.82.16/28 at Mae-East from CompuServe (AS4183) ASPATH=4183 5621 INCOMPLETE
195.232.82.16/28 at Mae-West from CompuServe (AS4183) ASPATH=4183 5621 INCOMPLETE
195.232.82.64/29 at Mae-East from CompuServe (AS4183) ASPATH=4183 5621 INCOMPLETE
195.232.82.64/29 at Mae-West from CompuServe (AS4183) ASPATH=4183 5621 INCOMPLETE
195.232.82.8/29 at Mae-East from CompuServe (AS4183) ASPATH=4183 5621 INCOMPLETE
195.232.82.8/29 at Mae-West from CompuServe (AS4183) ASPATH=4183 5621 INCOMPLETE
195.232.82.80/28 at Mae-East from CompuServe (AS4183) ASPATH=4183 5621 INCOMPLETE
195.232.82.80/28 at Mae-West from CompuServe (AS4183) ASPATH=4183 5621 INCOMPLETE
195.232.82.96/28 at Mae-East from CompuServe (AS4183) ASPATH=4183 5621 INCOMPLETE
195.232.82.96/28 at Mae-West from CompuServe (AS4183) ASPATH=4183 5621 INCOMPLETE
195.232.86.112/28 at Mae-East from CompuServe (AS4183) ASPATH=4183 5621 INCOMPLETE
195.232.86.112/28 at Mae-West from CompuServe (AS4183) ASPATH=4183 5621 INCOMPLETE
195.232.86.96/29 at Mae-East from CompuServe (AS4183) ASPATH=4183 5621 INCOMPLETE
195.232.86.96/29 at Mae-West from CompuServe (AS4183) ASPATH=4183 5621 INCOMPLETE
195.89.17.81/32 at Mae-East from NetAxs (AS4969) ASPATH=4969 8001 6889 IGP
205.214.79.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
205.214.79.16/28 at Mae-East from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
205.214.79.16/28 at Mae-West from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
205.214.79.48/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
205.214.79.48/28 at Mae-East from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
205.214.79.48/28 at Mae-West from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
205.214.88.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
205.214.88.16/28 at Mae-East from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
205.214.88.16/28 at Mae-West from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
205.214.94.32/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
205.214.94.32/27 at Mae-East from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
205.214.94.32/27 at Mae-West from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
205.214.94.64/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 2941 INCOMPLETE
205.214.94.64/27 at Mae-East from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
205.214.94.64/27 at Mae-West from ACSI (AS6467) ASPATH=6467 2941 INCOMPLETE
206.141.223.224/27 at AADS from AIS (AS6081) ASPATH=6081 7053 7053 7053 7053 IGP
206.84.149.20/32 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP
206.84.149.30/32 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP

Reserved AS Numbers
-------------------
AS64600 at Mae-East from NASA (AS297) ASPATH=297 64600 IGP

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

1. SPRINT (AS1239) at Mae-East 174146 + 36891 = 211037 BGP prefix updates
2. LinkAGE (AS4058) at Mae-West 92 + 111865 = 111957 BGP prefix updates
3. internetMCI (AS3561) at AADS 83271 + 15814 = 99085 BGP prefix updates
4. internetMCI (AS3561) at Mae-East 44702 + 15881 = 60583 BGP prefix updates
5. internetMCI (AS3561) at PacBell 37259 + 15140 = 52399 BGP prefix updates
6. NASA (AS297) at Mae-East 462 + 50955 = 51417 BGP prefix updates
7. LinkAGE (AS4058) at Mae-East 63 + 50580 = 50643 BGP prefix updates
8. WEN (AS4540) at PacBell 19 + 50566 = 50585 BGP prefix updates
9. MainStreet (AS3720) at Mae-West 10 + 44492 = 44502 BGP prefix updates
10. AGIS (AS4200) at Mae-East 24399 + 7293 = 31692 BGP prefix updates

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

1. VisiNet(AS6261) at Mae-East 32.54 (7581 ann, 233 entries)
2. OurWorld(AS7594) at Paix 19.59 (1156 ann, 59 entries)
3. OurWorld(AS7594) at Mae-West 14.15 (3537 ann, 250 entries)
4. AIMnet(AS3763) at Mae-West 9.11 (483 ann, 53 entries)
5. u-net(AS5669) at Mae-West 9.10 (91 ann, 10 entries)
6. VisiNet(AS6261) at Mae-West 7.50 (1687 ann, 225 entries)
7. LinkAGE(AS4058) at Mae-West 7.03 (211 ann, 30 entries)
8. Voicenet(AS3932) at Mae-West 4.34 (243 ann, 56 entries)
9. Voicenet(AS3932) at Mae-East 4.20 (235 ann, 56 entries)
10. GEOnet(AS3356) at PacBell 4.07 (415 ann, 102 entries)
11. u-net(AS5669) at Paix 3.30 (33 ann, 10 entries)
12. highway1(AS7922) at Mae-West 2.73 (30 ann, 11 entries)
13. highway1(AS7922) at Mae-East 2.73 (30 ann, 11 entries)
14. (AS2905) at Mae-East 2.50 (200 ann, 80 entries)
15. DREN(AS668) at Mae-East 2.09 (558 ann, 267 entries)
16. internetMCI(AS3561) at AADS 2.06 (35221 ann, 17067 entries)
17. DREN(AS668) at Mae-West 2.06 (552 ann, 268 entries)
18. ANS(AS1673) at Mae-East 1.88 (3179 ann, 1692 entries)
19. conxion(AS4544) at Mae-East 1.86 (39 ann, 21 entries)
20. Above(AS6461) at AADS 1.84 (667 ann, 363 entries)

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

1. SPRINT (1239) at mae-east 4157
2. internetMCI (3561) at pb 669
3. BBNplanet (1) at mae-west 526
4. AGIS (4200) at mae-east 397
5. Digex (2548) at mae-west 360
6. IBMGlobal (2685) at mae-west 326
7. AT&T (7018) at aads 273
8. CAIS (3491) at aads 191
9. INAP.net (5646) at aads 189
10. DREN (668) at mae-east 166






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