12/17/97 Internet Routing Problems

From: stats@merit.edu
Date: Thu Dec 18 1997 - 10:00:03 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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collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
133.55.0.11/32 at Mae-West from INAP.net (AS5646) ASPATH=5646 2907 IGP
192.114.163.0/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.114.166.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.114.169.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.114.190.0/29 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.114.191.0/29 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.207.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.211.0/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.222.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.235.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.198.129.128/27 at Mae-West from conxion (AS4544) ASPATH=4544 1760 IGP
192.198.129.128/27 at Mae-West from conxion (AS4544) ASPATH=4544 1760 IGP
192.239.22.48/29 at Mae-East from BBNplanet (AS1) ASPATH=1 IGP
192.239.22.48/29 at Mae-West from BBNplanet (AS1) ASPATH=1 IGP
194.207.0.128/28 at Mae-West from VBC (AS6320) ASPATH=6320 IGP
206.80.17.228/32 at Mae-West from WEN (AS4540) ASPATH=4540 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
206.80.170.204/30 at PacBell from Grid (AS6113) ASPATH=6113 IGP
209.100.89.0/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.128/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.160/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.192/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.224/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.32/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.64/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.89.96/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.100.91.0/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 10268 IGP
209.95.130.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 Incomplete

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

1. NetKonect (AS6716) at Mae-East 3 + 398903 = 398906 BGP prefix updates
2. GetNet (AS5784) at Mae-East 7 + 332263 = 332270 BGP prefix updates
3. USCyber (AS4136) at Mae-East 0 + 202837 = 202837 BGP prefix updates
4. idc (AS4694) at Mae-West 234 + 176748 = 176982 BGP prefix updates
5. SPRINT (AS1239) at Mae-East 145366 + 21653 = 167019 BGP prefix updates
6. BBNplanet (AS1) at Mae-East 58623 + 33354 = 91977 BGP prefix updates
7. CompuServe (AS4183) at Mae-East 14 + 70210 = 70224 BGP prefix updates
8. BBNplanet (AS1) at Mae-West 42194 + 19733 = 61927 BGP prefix updates
9. internetMCI (AS3561) at AADS 42363 + 10929 = 53292 BGP prefix updates
10. internetMCI (AS3561) at Mae-East 42479 + 10647 = 53126 BGP prefix updates

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

1. WCG(AS7911) at PacBell 47.00 (47 ann, 1 entries)
2. WireHub(AS5496) at Mae-East 40.13 (602 ann, 15 entries)
3. OLEANE(AS2917) at Mae-East 20.98 (902 ann, 43 entries)
4. Cableol(AS5089) at Mae-East 14.25 (57 ann, 4 entries)
5. BBNplanet(AS1) at Mae-East 11.96 (58623 ann, 4903 entries)
6. NetAxs(AS4969) at Mae-East 9.11 (838 ann, 92 entries)
7. Voicenet(AS3932) at Mae-East 9.06 (471 ann, 52 entries)
8. BBNplanet(AS1) at Mae-West 8.99 (42194 ann, 4694 entries)
9. CAIS(AS3491) at Mae-West 8.93 (3368 ann, 377 entries)
10. AGIS(AS4200) at Mae-East 8.22 (14658 ann, 1783 entries)
11. AT&T(AS6478) at Mae-West 8.11 (16311 ann, 2012 entries)
12. DREN(AS668) at Mae-East 8.06 (1822 ann, 226 entries)
13. InterAccess(AS3789) at AADS 7.44 (186 ann, 25 entries)
14. Seastrom(AS3066) at Mae-East 7.00 (7 ann, 1 entries)
15. Priori(AS10303) at Mae-East 7.00 (147 ann, 21 entries)
16. EUnet(AS286) at Mae-East 6.99 (7579 ann, 1084 entries)
17. SPRINT(AS1239) at Mae-East 6.96 (145366 ann, 20881 entries)
18. INS(AS6660) at Mae-East 6.50 (390 ann, 60 entries)
19. AT&T(AS6478) at Mae-East 6.15 (12367 ann, 2011 entries)
20. Internex(AS2828) at Mae-East 6.05 (363 ann, 60 entries)

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

1. SPRINT (1239) at mae-east 3666
2. internetMCI (3561) at aads 701
3. AGIS (4200) at mae-east 386
4. BBNplanet (1) at mae-west 377
5. CAIS (3491) at aads 191
6. IBMGlobal (2685) at mae-east 188
7. Grid (6113) at mae-west 178
8. AT&T (6478) at aads 160
9. Digex (2548) at mae-west 157
10. INAP.net (5646) at aads 155






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