11/08/97 Internet Routing Problems

From: stats@merit.edu
Date: Sun Nov 09 1997 - 10:00:04 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.
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Reserved Network and Host Announcements
---------------------------------------
192.116.222.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.222.32/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
206.31.77.12/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 7079 IGP
206.31.77.12/30 at Mae-West from ACSI (AS6467) ASPATH=6467 7079 IGP
206.31.77.16/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 7079 IGP
206.31.77.16/30 at Mae-West from ACSI (AS6467) ASPATH=6467 7079 IGP
206.31.77.24/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 7079 IGP
206.31.77.24/30 at Mae-West from ACSI (AS6467) ASPATH=6467 7079 IGP
206.31.77.28/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 7079 IGP
206.31.77.28/30 at Mae-West from ACSI (AS6467) ASPATH=6467 7079 IGP
206.31.77.4/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 7079 IGP
206.31.77.4/30 at Mae-West from ACSI (AS6467) ASPATH=6467 7079 IGP
206.31.77.44/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 7079 IGP
206.31.77.44/30 at Mae-West from ACSI (AS6467) ASPATH=6467 7079 IGP
206.31.77.52/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 7079 IGP
206.31.77.52/30 at Mae-West from ACSI (AS6467) ASPATH=6467 7079 IGP
206.31.77.56/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6467 7079 IGP
206.31.77.56/30 at Mae-West from ACSI (AS6467) ASPATH=6467 7079 IGP
206.80.170.204/30 at Mae-East from Grid (AS6113) ASPATH=6113 IGP
206.80.170.204/30 at Mae-West from Grid (AS6113) ASPATH=6113 IGP
207.212.14.32/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5672 10501 IGP

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

1. SPRINT (AS1239) at Mae-East 260427 + 104487 = 364914 BGP prefix updates
2. NetKonect (AS6716) at Mae-East 9 + 204921 = 204930 BGP prefix updates
3. idc (AS4694) at Mae-West 3 + 133963 = 133966 BGP prefix updates
4. GetNet (AS5784) at Mae-East 0 + 129357 = 129357 BGP prefix updates
5. internetMCI (AS3561) at AADS 88273 + 37041 = 125314 BGP prefix updates
6. internetMCI (AS3561) at Mae-East 78355 + 11322 = 89677 BGP prefix updates
7. Interpath (AS3407) at Mae-East 15 + 82990 = 83005 BGP prefix updates
8. USCyber (AS4136) at Mae-East 0 + 56342 = 56342 BGP prefix updates
9. telia (AS1299) at Mae-East 400 + 51278 = 51678 BGP prefix updates
10. BBNplanet (AS1) at Mae-East 21203 + 4883 = 26086 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 157.64 (7409 ann, 47 entries)
2. Priori(AS10303) at Mae-East 17.81 (285 ann, 16 entries)
3. Priori(AS10303) at Mae-West 16.81 (269 ann, 16 entries)
4. SPRINT(AS1239) at Mae-East 12.85 (260427 ann, 20273 entries)
5. LinkAGE(AS4058) at Mae-East 11.39 (205 ann, 18 entries)
6. Erols(AS6079) at Mae-East 7.67 (92 ann, 12 entries)
7. Nacamar(AS3257) at Mae-East 7.45 (395 ann, 53 entries)
8. CERFnet(AS1740) at Mae-West 7.12 (13572 ann, 1905 entries)
9. IXI(AS5418) at Mae-East 7.00 (21 ann, 3 entries)
10. OLEANE(AS2917) at Mae-East 6.56 (256 ann, 39 entries)
11. HLC(AS4565) at Mae-East 6.14 (405 ann, 66 entries)
12. WNA(AS2914) at Mae-East 5.90 (5559 ann, 943 entries)
13. internetMCI(AS3561) at AADS 5.49 (88273 ann, 16092 entries)
14. ICI(AS6561) at Mae-West 5.33 (80 ann, 15 entries)
15. Netcom(AS2551) at Mae-East 5.28 (1741 ann, 330 entries)
16. HLC(AS4565) at Mae-West 5.23 (345 ann, 66 entries)
17. Above(AS6461) at Mae-East 5.16 (439 ann, 85 entries)
18. Dialnet(AS5552) at Mae-East 5.10 (413 ann, 81 entries)
19. HLC(AS4565) at AADS 5.06 (339 ann, 67 entries)
20. EXODUS(AS3967) at Mae-East 5.01 (356 ann, 71 entries)

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

1. SPRINT (1239) at mae-east 3510
2. internetMCI (3561) at mae-east 556
3. BBNplanet (1) at mae-east 416
4. AGIS (4200) at mae-east 375
5. AT&T (6478) at pb 216
6. CWIX (5683) at mae-east 191
7. IBMGlobal (2685) at mae-east 172
8. Grid (6113) at pb 169
9. Digex (2548) at mae-west 146
10. NASA (297) at mae-west 145






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