05/29/98 Internet Routing Problems

From: stats@merit.edu
Date: Sat May 30 1998 - 10:00:04 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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collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
192.35.227.0/27 at Mae-East from EXODUS (AS3967) ASPATH=3967 1852 IGP
192.35.227.0/27 at Mae-West from EXODUS (AS3967) ASPATH=3967 1852 IGP
192.35.227.0/27 at Mae-West from EXODUS (AS3967) ASPATH=3967 1852 IGP
192.35.227.0/27 at AADS from EXODUS (AS3967) ASPATH=3967 1852 IGP
192.35.227.0/27 at PacBell 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
194.68.51.224/28 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
195.12.164.224/28 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
198.80.116.192/27 at Mae-East from ANS (AS1673) ASPATH=1673 1670 IGP
206.185.10.249/32 at Mae-East from AGIS (AS4200) ASPATH=4200 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
207.26.64.80/28 at Mae-East from ANS (AS1673) ASPATH=1673 1324 IGP

Reserved AS Numbers
-------------------
AS64600 at Mae-East from AT
AS65000 at Mae-East from internetMCI (AS3561) ASPATH=3561 4230 65000 IGP

AS65534 at Mae-East from ANS (AS1673) ASPATH=1673 1324 65534 IGP

AS64600 at Mae-West from AT
AS65534 at Mae-West from ANS (AS1673) ASPATH=1673 1324 65534 IGP

AS64600 at AADS from AT
AS65000 at AADS from internetMCI (AS3561) ASPATH=3561 4230 65000 IGP

AS64600 at PacBell from AT
AS65000 at PacBell from internetMCI (AS3561) ASPATH=3561 4230 65000 IGP

AS65534 at PacBell from ANS (AS1673) ASPATH=1673 1324 65534 IGP

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

1. SPRINT (AS1239) at Mae-East 549156 + 138807 = 687963 BGP prefix updates
2. LinkAGE (AS4058) at Mae-East 92 + 150117 = 150209 BGP prefix updates
3. internetMCI (AS3561) at AADS 41645 + 13775 = 55420 BGP prefix updates
4. internetMCI (AS3561) at PacBell 41177 + 14193 = 55370 BGP prefix updates
5. internetMCI (AS3561) at Mae-East 40334 + 14492 = 54826 BGP prefix updates
6. MainStreet (AS3720) at Mae-West 8 + 45139 = 45147 BGP prefix updates
7. AGIS (AS4200) at Mae-East 22484 + 5900 = 28384 BGP prefix updates
8. ANS (AS1673) at Mae-East 18593 + 993 = 19586 BGP prefix updates
9. CERFnet (AS1740) at Mae-West 13531 + 2198 = 15729 BGP prefix updates
10. LinkAGE (AS4058) at Mae-West 61 + 14558 = 14619 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 38.80 (194 ann, 5 entries)
2. OurWorld(AS7594) at Mae-West 13.03 (3206 ann, 246 entries)
3. VisiNet(AS6261) at Mae-West 7.23 (1626 ann, 225 entries)
4. AIMnet(AS3763) at Mae-West 7.17 (380 ann, 53 entries)
5. VisiNet(AS6261) at Mae-East 6.31 (1395 ann, 221 entries)
6. GEOnet(AS3356) at PacBell 3.88 (396 ann, 102 entries)
7. OurWorld(AS7594) at Paix 3.85 (946 ann, 246 entries)
8. u-net(AS5669) at Paix 2.30 (23 ann, 10 entries)
9. Nacamar(AS3257) at Mae-East 2.19 (162 ann, 74 entries)
10. ANS(AS1673) at Mae-East 2.15 (3395 ann, 1581 entries)
11. Voicenet(AS3932) at Mae-East 2.00 (112 ann, 56 entries)
12. Voicenet(AS3932) at Mae-West 1.98 (111 ann, 56 entries)
13. IOS(AS5000) at AADS 1.97 (65 ann, 33 entries)
14. IOS(AS5000) at Mae-West 1.97 (65 ann, 33 entries)
15. IOS(AS5000) at Mae-East 1.97 (65 ann, 33 entries)
16. ThePlanet(AS5388) at Mae-West 1.94 (163 ann, 84 entries)
17. IBMGlobal(AS2685) at AADS 1.84 (427 ann, 232 entries)
18. LinkAGE(AS4058) at Mae-West 1.71 (41 ann, 24 entries)
19. FiberNet(AS6259) at Mae-East 1.50 (42 ann, 28 entries)
20. LinkAGE(AS4058) at Mae-East 1.33 (32 ann, 24 entries)

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

1. SPRINT (1239) at mae-east 3918
2. internetMCI (3561) at pb 797
3. (0) at aads 693
4. BBNplanet (1) at mae-west 482
5. AGIS (4200) at mae-east 438
6. Digex (2548) at mae-west 365
7. IBMGlobal (2685) at mae-west 352
8. AT&T (7018) at pb 251
9. INAP.net (5646) at aads 201
10. DREN (668) at mae-east 173






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