09/27/97 Internet Routing Problems

From: stats@merit.edu
Date: Sun Sep 28 1997 - 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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Also see http://www.caida.org for more information about Internet statistics
collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
192.116.206.112/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.206.128/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.206.192/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.206.80/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.206.96/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.207.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.207.48/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.207.64/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.213.48/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.226.64/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.226.96/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
193.189.241.0/27 at Mae-East from ANS (AS1673) ASPATH=1673 1667 6805 Incomplete
193.189.241.0/27 at Mae-West from ANS (AS1673) ASPATH=1673 1667 6805 Incomplete
193.189.241.0/27 at PacBell from ANS (AS1673) ASPATH=1673 1667 6805 Incomplete
204.223.87.16/28 at Mae-West from DISA (AS568) ASPATH=568 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 3542 Incomplete
204.223.87.32/28 at Mae-West from DISA (AS568) ASPATH=568 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 3542 Incomplete
204.223.87.48/28 at Mae-West from DISA (AS568) ASPATH=568 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 3542 Incomplete
204.223.87.64/28 at Mae-West from DISA (AS568) ASPATH=568 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 3542 Incomplete

Reserved AS Numbers
-------------------
AS65515 at Mae-East from Digex (AS2548) ASPATH=2548 5415 65515 8207 IGP

AS65515 at Mae-West from Digex (AS2548) ASPATH=2548 5415 65515 8207 IGP

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

1. internetMCI (AS3561) at AADS 156205 + 248270 = 404475 BGP prefix updates
2. internetMCI (AS3561) at PacBell 234496 + 86623 = 321119 BGP prefix updates
3. internetMCI (AS3561) at Mae-East 239800 + 65474 = 305274 BGP prefix updates
4. USCyber (AS4136) at Mae-East 0 + 231482 = 231482 BGP prefix updates
5. DISA (AS568) at Mae-West 2677 + 213373 = 216050 BGP prefix updates
6. Grid (AS6113) at Mae-East 1810 + 181350 = 183160 BGP prefix updates
7. Grid (AS6113) at Mae-West 1552 + 177848 = 179400 BGP prefix updates
8. Grid (AS6113) at PacBell 1552 + 177847 = 179399 BGP prefix updates
9. idc (AS4694) at Mae-West 28 + 135454 = 135482 BGP prefix updates
10. GetNet (AS5784) at Mae-East 0 + 119122 = 119122 BGP prefix updates

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

1. internetMCI(AS3561) at Mae-East 14.91 (239800 ann, 16086 entries)
2. internetMCI(AS3561) at PacBell 14.65 (234496 ann, 16006 entries)
3. internetMCI(AS3561) at AADS 9.74 (156205 ann, 16035 entries)
4. Priori(AS10303) at Mae-West 9.00 (9 ann, 1 entries)
5. Nacamar(AS3257) at Mae-West 5.61 (230 ann, 41 entries)
6. DREN(AS668) at Mae-East 4.38 (916 ann, 209 entries)
7. DRA(AS1746) at Mae-East 4.08 (49 ann, 12 entries)
8. DRA(AS1746) at Mae-West 4.00 (48 ann, 12 entries)
9. DREN(AS668) at Mae-West 3.95 (857 ann, 217 entries)
10. ISI.Net(AS6196) at Mae-East 3.80 (38 ann, 10 entries)
11. AGIS(AS4200) at Mae-East 3.63 (5830 ann, 1608 entries)
12. SPRINT(AS1239) at Mae-East 3.61 (72607 ann, 20095 entries)
13. ISI.Net(AS6196) at Mae-West 3.60 (36 ann, 10 entries)
14. NetKonect(AS6716) at Mae-East 3.50 (49 ann, 14 entries)
15. NetAxs(AS4969) at Mae-East 3.23 (229 ann, 71 entries)
16. DISA(AS568) at Mae-West 3.11 (2677 ann, 860 entries)
17. Priori(AS10303) at Mae-East 3.00 (3 ann, 1 entries)
18. EXODUS(AS3967) at PacBell 2.61 (172 ann, 66 entries)
19. DRA(AS1746) at AADS 2.42 (29 ann, 12 entries)
20. WireHub(AS5496) at Mae-East 2.33 (35 ann, 15 entries)

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

1. SPRINT (1239) at mae-east 3665
2. internetMCI (3561) at mae-east 561
3. AGIS (4200) at mae-east 465
4. BBNplanet (1) at mae-west 427
5. Grid (6113) at mae-east 222
6. AT&T (6478) at pb 204
7. CWIX (5683) at mae-west 204
8. Digex (2548) at mae-west 141
9. CAIS (3491) at aads 123
10. (0) at aads 116






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