11/23/97 Internet Routing Problems

From: stats@merit.edu
Date: Mon Nov 24 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
---------------------------------------
172.16/16 at AADS from INCnet (AS3857) ASPATH=3857 Incomplete
192.116.222.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.168.1/24 at AADS from INCnet (AS3857) ASPATH=3857 Incomplete
192.168.125/24 at AADS from INCnet (AS3857) ASPATH=3857 Incomplete
192.168.35/24 at AADS from INCnet (AS3857) ASPATH=3857 Incomplete
192.168.4/24 at AADS from INCnet (AS3857) ASPATH=3857 Incomplete
192.168.5/24 at AADS from INCnet (AS3857) ASPATH=3857 Incomplete
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

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. NetKonect (AS6716) at Mae-East 0 + 256903 = 256903 BGP prefix updates
2. GetNet (AS5784) at Mae-East 10 + 171616 = 171626 BGP prefix updates
3. idc (AS4694) at Mae-West 8 + 144037 = 144045 BGP prefix updates
4. USCyber (AS4136) at Mae-East 0 + 89965 = 89965 BGP prefix updates
5. SPRINT (AS1239) at Mae-East 60553 + 13583 = 74136 BGP prefix updates
6. Interpath (AS3407) at Mae-East 60 + 73102 = 73162 BGP prefix updates
7. internetMCI (AS3561) at Mae-East 39197 + 9205 = 48402 BGP prefix updates
8. CAIS (AS3491) at Mae-West 31335 + 10778 = 42113 BGP prefix updates
9. telia (AS1299) at Mae-East 79 + 37468 = 37547 BGP prefix updates
10. internetMCI (AS3561) at AADS 22736 + 9822 = 32558 BGP prefix updates

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

1. AGIS(AS4200) at Mae-East 145.22 (11618 ann, 80 entries)
2. NetAxs(AS4969) at Mae-East 132.65 (5306 ann, 40 entries)
3. CAIS(AS3491) at Mae-West 46.08 (31335 ann, 680 entries)
4. ICI(AS6561) at Mae-West 35.07 (526 ann, 15 entries)
5. HLC(AS4565) at Mae-East 16.60 (1129 ann, 68 entries)
6. HLC(AS4565) at Mae-West 15.54 (1072 ann, 69 entries)
7. CableInet(AS5462) at Mae-West 12.77 (562 ann, 44 entries)
8. Cableol(AS5089) at Mae-East 12.75 (51 ann, 4 entries)
9. ThePlanet(AS5388) at Mae-East 12.39 (446 ann, 36 entries)
10. ThePlanet(AS5388) at Mae-West 11.62 (395 ann, 34 entries)
11. IBMGlobal(AS2685) at Mae-East 11.24 (7173 ann, 638 entries)
12. Voicenet(AS3932) at Mae-East 10.00 (530 ann, 53 entries)
13. IBMGlobal(AS2685) at AADS 8.87 (5658 ann, 638 entries)
14. Intermedia(AS6235) at Mae-East 8.31 (2069 ann, 249 entries)
15. IBMGlobal(AS2685) at Mae-West 7.62 (4856 ann, 637 entries)
16. WebSecure(AS6583) at AADS 7.50 (15 ann, 2 entries)
17. DRA(AS1746) at Mae-West 7.25 (87 ann, 12 entries)
18. WebSecure(AS6583) at Mae-East 7.00 (14 ann, 2 entries)
19. HLC(AS4565) at AADS 6.54 (451 ann, 69 entries)
20. WebSecure(AS6583) at Mae-West 6.50 (13 ann, 2 entries)

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

1. SPRINT (1239) at mae-east 3687
2. internetMCI (3561) at aads 636
3. BBNplanet (1) at mae-west 411
4. AT&T (6478) at mae-east 214
5. IBMGlobal (2685) at mae-west 185
6. Grid (6113) at pb 169
7. CWIX (5683) at mae-west 162
8. Digex (2548) at mae-west 151
9. INAP.net (5646) at mae-west 137
10. NASA (297) at mae-west 126






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