11/26/97 Internet Routing Problems

From: stats@merit.edu
Date: Thu Nov 27 1997 - 10:00:06 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
---------------------------------------
10/8 at Mae-East from Internex (AS2828) ASPATH=2828 Incomplete
10/8 at Mae-West from Internex (AS2828) ASPATH=2828 Incomplete
10/8 at AADS from Internex (AS2828) ASPATH=2828 Incomplete
192.116.222.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
194.207.0.128/28 at Mae-West from VBC (AS6320) ASPATH=6320 IGP
206.80.170.204/30 at Mae-West from Grid (AS6113) ASPATH=6113 IGP
209.172.73.248/29 at Mae-West from GoodNet (AS5696) ASPATH=5696 6461 10245 IGP
209.172.73.248/29 at Mae-West from Above (AS6461) ASPATH=6461 10245 IGP
209.172.73.248/29 at Mae-West from Above (AS6461) ASPATH=6461 10245 IGP

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

1. NetKonect (AS6716) at Mae-East 3 + 311032 = 311035 BGP prefix updates
2. USCyber (AS4136) at Mae-East 11 + 260489 = 260500 BGP prefix updates
3. idc (AS4694) at Mae-West 25 + 228397 = 228422 BGP prefix updates
4. GetNet (AS5784) at Mae-East 0 + 183014 = 183014 BGP prefix updates
5. CompuServe (AS4183) at Mae-East 175 + 153883 = 154058 BGP prefix updates
6. Interpath (AS3407) at Mae-East 313 + 139331 = 139644 BGP prefix updates
7. SPRINT (AS1239) at Mae-East 70859 + 21376 = 92235 BGP prefix updates
8. telia (AS1299) at Mae-East 1805 + 76762 = 78567 BGP prefix updates
9. internetMCI (AS3561) at Mae-East 51279 + 14159 = 65438 BGP prefix updates
10. internetMCI (AS3561) at AADS 34112 + 14397 = 48509 BGP prefix updates

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

1. OLEANE(AS2917) at Mae-East 98.00 (4018 ann, 41 entries)
2. NetAxs(AS4969) at Mae-East 52.38 (3143 ann, 60 entries)
3. Internex(AS2828) at Mae-West 44.16 (2694 ann, 61 entries)
4. CAIS(AS3491) at Mae-West 43.72 (30649 ann, 701 entries)
5. Intermedia(AS6235) at Mae-East 29.23 (6373 ann, 218 entries)
6. HLC(AS4565) at Mae-East 15.37 (1076 ann, 70 entries)
7. HLC(AS4565) at Mae-West 15.07 (1040 ann, 69 entries)
8. HLC(AS4565) at AADS 13.83 (968 ann, 70 entries)
9. Internex(AS2828) at AADS 13.53 (812 ann, 60 entries)
10. Seastrom(AS3066) at Mae-East 13.00 (26 ann, 2 entries)
11. Internex(AS2828) at Mae-East 12.46 (735 ann, 59 entries)
12. Internex(AS2828) at Mae-West 10.97 (669 ann, 61 entries)
13. CWIX(AS5683) at Mae-West 10.29 (13211 ann, 1284 entries)
14. AGIS(AS4200) at Mae-East 9.98 (9768 ann, 979 entries)
15. ICI(AS6561) at Mae-West 9.80 (147 ann, 15 entries)
16. WebSecure(AS6583) at Mae-East 9.50 (19 ann, 2 entries)
17. CableInet(AS5462) at Mae-West 7.86 (346 ann, 44 entries)
18. WebSecure(AS6583) at Mae-West 7.00 (14 ann, 2 entries)
19. WebSecure(AS6583) at AADS 7.00 (14 ann, 2 entries)
20. CWIX(AS5683) at Mae-West 6.80 (8728 ann, 1284 entries)

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

1. SPRINT (1239) at mae-east 3556
2. internetMCI (3561) at mae-east 616
3. BBNplanet (1) at mae-east 390
4. INAP.net (5646) at aads 374
5. AGIS (4200) at mae-east 281
6. AT&T (6478) at mae-west 227
7. IBMGlobal (2685) at mae-east 193
8. Grid (6113) at pb 173
9. CWIX (5683) at mae-west 171
10. Digex (2548) at mae-west 160






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