12/21/97 Internet Routing Problems

From: stats@merit.edu
Date: Mon Dec 22 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
172.16/16 at AADS from INCnet (AS3857) ASPATH=3857 Incomplete
192.198.129.128/27 at Mae-East from conxion (AS4544) ASPATH=4544 1760 IGP
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
192.198.129.128/27 at AADS from conxion (AS4544) ASPATH=4544 1760 IGP
192.198.129.128/27 at PacBell 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
199.33.243.228/30 at Mae-East from GoodNet (AS5696) ASPATH=5696 Incomplete
199.33.243.228/30 at Mae-West from GoodNet (AS5696) ASPATH=5696 Incomplete
199.33.243.228/30 at AADS 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
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

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 + 182594 = 182594 BGP prefix updates
2. GetNet (AS5784) at Mae-East 0 + 152687 = 152687 BGP prefix updates
3. idc (AS4694) at Mae-West 423 + 128005 = 128428 BGP prefix updates
4. SPRINT (AS1239) at Mae-East 100595 + 12961 = 113556 BGP prefix updates
5. USCyber (AS4136) at Mae-East 0 + 109794 = 109794 BGP prefix updates
6. internetMCI (AS3561) at AADS 46619 + 12571 = 59190 BGP prefix updates
7. AT&T (AS6478) at Mae-West 35071 + 16804 = 51875 BGP prefix updates
8. internetMCI (AS3561) at Mae-East 35028 + 7815 = 42843 BGP prefix updates
9. telia (AS1299) at Mae-East 273 + 33827 = 34100 BGP prefix updates
10. internetMCI (AS3561) at PacBell 17231 + 8078 = 25309 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 110.05 (10675 ann, 97 entries)
2. IBMGlobal(AS2685) at AADS 109.17 (5240 ann, 48 entries)
3. Cableol(AS5089) at Mae-East 88.25 (353 ann, 4 entries)
4. CableInet(AS5462) at Mae-West 22.30 (825 ann, 37 entries)
5. AT&T(AS6478) at Mae-West 17.31 (35071 ann, 2026 entries)
6. CAIS(AS3491) at Mae-West 9.85 (12827 ann, 1302 entries)
7. Genuity(AS3847) at AADS 9.56 (3489 ann, 365 entries)
8. IBMGlobal(AS2685) at Mae-East 8.29 (5911 ann, 713 entries)
9. AT&T(AS6478) at PacBell 8.22 (16658 ann, 2027 entries)
10. Genuity(AS3847) at Mae-West 8.12 (2890 ann, 356 entries)
11. DISA(AS568) at Mae-West 7.51 (4199 ann, 559 entries)
12. DRA(AS1746) at Mae-West 7.00 (84 ann, 12 entries)
13. AT&T(AS6478) at Mae-East 6.63 (13479 ann, 2034 entries)
14. InterAccess(AS3789) at AADS 6.62 (172 ann, 26 entries)
15. IBMGlobal(AS2685) at Mae-West 6.26 (3474 ann, 555 entries)
16. AGIS(AS4200) at Mae-East 5.66 (10023 ann, 1770 entries)
17. Genuity(AS3847) at Mae-East 5.53 (2019 ann, 365 entries)
18. Nacamar(AS3257) at Mae-West 5.36 (343 ann, 64 entries)
19. DRA(AS1746) at Mae-East 4.92 (59 ann, 12 entries)
20. DRA(AS1746) at AADS 4.75 (57 ann, 12 entries)

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

1. SPRINT (1239) at mae-east 3710
2. internetMCI (3561) at mae-east 735
3. BBNplanet (1) at mae-west 381
4. AGIS (4200) at mae-east 322
5. CAIS (3491) at mae-west 198
6. IBMGlobal (2685) at mae-east 187
7. Grid (6113) at pb 185
8. INAP.net (5646) at aads 167
9. Digex (2548) at mae-west 166
10. NASA (297) at mae-west 163






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