12/22/97 Internet Routing Problems

From: stats@merit.edu
Date: Tue Dec 23 1997 - 10:00:04 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
---------------------------------------
1/8 at Mae-East from SPRINT (AS1239) ASPATH=1239 IGP
133.55.0.11/32 at Mae-West from INAP.net (AS5646) ASPATH=5646 2907 IGP
192.168.5/24 at AADS from INCnet (AS3857) ASPATH=3857 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
199.33.243.228/30 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
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. GetNet (AS5784) at Mae-East 0 + 331318 = 331318 BGP prefix updates
2. USCyber (AS4136) at Mae-East 0 + 268827 = 268827 BGP prefix updates
3. NetKonect (AS6716) at Mae-East 24 + 241518 = 241542 BGP prefix updates
4. SPRINT (AS1239) at Mae-East 203397 + 24879 = 228276 BGP prefix updates
5. idc (AS4694) at Mae-West 267 + 178770 = 179037 BGP prefix updates
6. internetMCI (AS3561) at Mae-East 108152 + 10097 = 118249 BGP prefix updates
7. internetMCI (AS3561) at AADS 53082 + 14397 = 67479 BGP prefix updates
8. telia (AS1299) at Mae-East 106 + 56698 = 56804 BGP prefix updates
9. internetMCI (AS3561) at PacBell 32216 + 10131 = 42347 BGP prefix updates
10. BBNplanet (AS1) at Mae-East 34463 + 6670 = 41133 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 87.66 (9029 ann, 103 entries)
2. Cableol(AS5089) at Mae-East 22.25 (89 ann, 4 entries)
3. IBMGlobal(AS2685) at AADS 20.31 (914 ann, 45 entries)
4. Nacamar(AS3257) at Mae-West 13.70 (863 ann, 63 entries)
5. Genuity(AS3847) at Mae-West 11.23 (4131 ann, 368 entries)
6. Genuity(AS3847) at AADS 10.36 (3814 ann, 368 entries)
7. Genuity(AS3847) at Mae-East 10.02 (3687 ann, 368 entries)
8. SPRINT(AS1239) at Mae-East 9.53 (203397 ann, 21351 entries)
9. Nacamar(AS3257) at Mae-East 8.76 (552 ann, 63 entries)
10. BBNplanet(AS1) at Mae-East 6.98 (34463 ann, 4934 entries)
11. DREN(AS668) at Mae-East 6.67 (1468 ann, 220 entries)
12. internetMCI(AS3561) at Mae-East 6.57 (108152 ann, 16452 entries)
13. DISA(AS568) at Mae-West 6.20 (3490 ann, 563 entries)
14. CAIS(AS3491) at Mae-West 6.16 (7875 ann, 1278 entries)
15. AT&T(AS6478) at Mae-West 5.58 (11360 ann, 2036 entries)
16. Interpath(AS3407) at Mae-East 5.47 (175 ann, 32 entries)
17. OLEANE(AS2917) at Mae-East 5.17 (217 ann, 42 entries)
18. EUnet(AS286) at Mae-East 4.92 (5500 ann, 1117 entries)
19. DREN(AS668) at Mae-West 4.75 (1063 ann, 224 entries)
20. CableInet(AS5462) at Mae-West 4.68 (173 ann, 37 entries)

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

1. SPRINT (1239) at mae-east 3700
2. internetMCI (3561) at pb 739
3. AGIS (4200) at mae-east 364
4. BBNplanet (1) at mae-west 359
5. IBMGlobal (2685) at mae-east 200
6. Grid (6113) at mae-west 199
7. CAIS (3491) at aads 167
8. INAP.net (5646) at aads 164
9. Digex (2548) at mae-west 161
10. AT&T (6478) at mae-west 159






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