10/12/97 Internet Routing Problems

From: stats@merit.edu
Date: Mon Oct 13 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.
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Reserved Network and Host Announcements
---------------------------------------
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
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
24.48.24.0/28 at Mae-East from ANS (AS1673) ASPATH=1673 1333 Incomplete
24.48.26.0/28 at Mae-East from ANS (AS1673) ASPATH=1673 1333 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. NetKonect (AS6716) at Mae-East 227 + 249709 = 249936 BGP prefix updates
2. SPRINT (AS1239) at Mae-East 125981 + 10751 = 136732 BGP prefix updates
3. idc (AS4694) at Mae-West 1480 + 130415 = 131895 BGP prefix updates
4. GetNet (AS5784) at Mae-East 27 + 124780 = 124807 BGP prefix updates
5. USCyber (AS4136) at Mae-East 69 + 105810 = 105879 BGP prefix updates
6. internetMCI (AS3561) at Mae-East 83553 + 7512 = 91065 BGP prefix updates
7. DISA (AS568) at Mae-West 2321 + 76832 = 79153 BGP prefix updates
8. Interpath (AS3407) at Mae-East 281 + 59226 = 59507 BGP prefix updates
9. BBNplanet (AS1) at Mae-East 28658 + 5542 = 34200 BGP prefix updates
10. internetMCI (AS3561) at PacBell 26279 + 7800 = 34079 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 379.40 (5691 ann, 15 entries)
2. CableInet(AS5462) at Mae-East 37.67 (226 ann, 6 entries)
3. Servint(AS7960) at Mae-East 27.50 (55 ann, 2 entries)
4. DREN(AS668) at Mae-East 18.69 (5814 ann, 311 entries)
5. On-Net(AS6792) at Mae-East 13.00 (52 ann, 4 entries)
6. idc(AS4694) at Mae-West 12.13 (1480 ann, 122 entries)
7. MIBX(AS6218) at PacBell 12.00 (48 ann, 4 entries)
8. HLC(AS4565) at Mae-East 10.59 (699 ann, 66 entries)
9. AT&T(AS6478) at Mae-East 10.57 (14792 ann, 1400 entries)
10. Grid(AS6113) at Mae-East 10.10 (10544 ann, 1044 entries)
11. Internex(AS2828) at Mae-East 9.88 (583 ann, 59 entries)
12. Advantis(AS2685) at Mae-East 9.64 (3459 ann, 359 entries)
13. NetKonect(AS6716) at Mae-East 8.73 (227 ann, 26 entries)
14. INSnet(AS5378) at Mae-East 7.25 (522 ann, 72 entries)
15. ThePlanet(AS5388) at Mae-East 7.10 (206 ann, 29 entries)
16. WireHub(AS5496) at Mae-East 7.06 (113 ann, 16 entries)
17. EXODUS(AS3967) at PacBell 7.04 (197 ann, 28 entries)
18. Nacamar(AS3257) at Mae-West 6.71 (302 ann, 45 entries)
19. Euro(AS5390) at Mae-East 6.60 (33 ann, 5 entries)
20. IOS(AS5000) at Mae-East 6.48 (136 ann, 21 entries)

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

1. internetMCI (3561) at aads 640
2. AGIS (4200) at mae-east 437
3. BBNplanet (1) at mae-west 397
4. AT&T (6478) at mae-east 226
5. CWIX (5683) at mae-east 226
6. Grid (6113) at mae-east 178
7. Digex (2548) at mae-west 166
8. NASA (297) at mae-west 153
9. CAIS (3491) at aads 136
10. EUnet (286) at mae-east 131






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