10/14/97 Internet Routing Problems

From: stats@merit.edu
Date: Wed Oct 15 1997 - 10:00:11 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.
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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
195.204.43.32/27 at Mae-East from telia (AS1299) ASPATH=1299 1299 1299 1299 1299 3301 5381 IGP
198.60.153.49/32 at Mae-East from GoodNet (AS5696) ASPATH=5696 Incomplete
198.60.153.49/32 at Mae-West from GoodNet (AS5696) ASPATH=5696 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
206.80.170.204/30 at PacBell 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. NetKonect (AS6716) at Mae-East 270 + 833643 = 833913 BGP prefix updates
2. idc (AS4694) at Mae-West 844 + 611491 = 612335 BGP prefix updates
3. Interpath (AS3407) at Mae-East 673 + 593505 = 594178 BGP prefix updates
4. GetNet (AS5784) at Mae-East 88 + 314159 = 314247 BGP prefix updates
5. SPRINT (AS1239) at Mae-East 194106 + 18124 = 212230 BGP prefix updates
6. USCyber (AS4136) at Mae-East 216 + 208032 = 208248 BGP prefix updates
7. internetMCI (AS3561) at Mae-East 166860 + 18394 = 185254 BGP prefix updates
8. internetMCI (AS3561) at PacBell 93508 + 22779 = 116287 BGP prefix updates
9. telia (AS1299) at Mae-East 3492 + 77216 = 80708 BGP prefix updates
10. internetMCI (AS3561) at AADS 61013 + 19673 = 80686 BGP prefix updates

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

1. CWIX(AS5683) at Mae-East 78.99 (6951 ann, 88 entries)
2. NetAxs(AS4969) at Mae-East 78.74 (3937 ann, 50 entries)
3. CWIX(AS5683) at Mae-East 67.97 (5981 ann, 88 entries)
4. SPRINT(AS1239) at Mae-East 67.45 (141437 ann, 2097 entries)
5. CableInet(AS5462) at Mae-East 59.00 (354 ann, 6 entries)
6. On-Net(AS6792) at Mae-East 56.00 (56 ann, 1 entries)
7. ANS(AS1673) at PacBell 52.78 (19740 ann, 374 entries)
8. VisiNet(AS6261) at Mae-East 51.20 (512 ann, 10 entries)
9. DREN(AS668) at Mae-East 43.57 (4662 ann, 107 entries)
10. Grid(AS6113) at PacBell 35.47 (6774 ann, 191 entries)
11. conxion(AS4544) at Mae-East 30.00 (30 ann, 1 entries)
12. INSnet(AS5378) at Mae-East 29.87 (896 ann, 30 entries)
13. ThePlanet(AS5388) at Mae-East 29.60 (296 ann, 10 entries)
14. MIBX(AS6218) at PacBell 27.00 (108 ann, 4 entries)
15. Primenet(AS3549) at Mae-East 26.68 (507 ann, 19 entries)
16. netrail(AS4006) at Mae-East 26.00 (130 ann, 5 entries)
17. Grid(AS6113) at Mae-East 25.44 (26148 ann, 1028 entries)
18. Grid(AS6113) at Mae-West 23.92 (11432 ann, 478 entries)
19. Genuity(AS3847) at Mae-East 22.92 (3966 ann, 173 entries)
20. Interpath(AS3407) at Mae-East 20.81 (645 ann, 31 entries)

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

1. internetMCI (3561) at pb 651
2. AT&T (6478) at pb 237
3. Grid (6113) at pb 171
4. CAIS (3491) at aads 134
5. INAP.net (5646) at aads 113
6. ANS (1673) at pb 99
7. Advantis (2685) at aads 63
8. Genuity (3847) at paix 51
9. GEOnet (3356) at pb 29
10. Primenet (3549) at aads 27






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