01/22/98 Internet Routing Problems

From: stats@merit.edu
Date: Fri Jan 23 1998 - 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
---------------------------------------
10.20.44.0/24 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
10.20.52.0/24 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
10.20.56.0/26 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
10.20.56.128/26 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
10.20.56.192/26 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
10.20.56.64/26 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
10.20.57.0/26 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
10.20.57.128/26 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
10.20.57.192/26 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
10.20.57.64/26 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
144.228.33.40/30 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
172.16.1.0/27 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
172.16.1.0/27 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
172.16.1.32/27 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
172.16.1.32/27 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
172.16.1.64/27 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
172.16.1.64/27 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
172.16.1.96/27 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
172.16.1.96/27 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP
199.73.137.168/29 at Mae-East from Interpath (AS3407) ASPATH=3407 IGP

Reserved AS Numbers
-------------------
AS65515 at Mae-East from Digex (AS2548) ASPATH=2548 5415 5415 65515 8207 IGP

AS65515 at Mae-West from Digex (AS2548) ASPATH=2548 5415 5415 65515 8207 IGP

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

1. internetMCI (AS3561) at AADS 49154 + 14247 = 63401 BGP prefix updates
2. CAIS (AS3491) at AADS 11810 + 3399 = 15209 BGP prefix updates
3. NetKonect (AS6716) at Mae-East 0 + 13131 = 13131 BGP prefix updates
4. SPRINT (AS1239) at Mae-East 8798 + 2390 = 11188 BGP prefix updates
5. idc (AS4694) at Mae-West 0 + 9761 = 9761 BGP prefix updates
6. MIBX (AS6218) at PacBell 4322 + 3874 = 8196 BGP prefix updates
7. USCyber (AS4136) at Mae-East 0 + 7846 = 7846 BGP prefix updates
8. internetMCI (AS3561) at Mae-East 6183 + 1421 = 7604 BGP prefix updates
9. IBMGlobal (AS2685) at AADS 2707 + 1242 = 3949 BGP prefix updates
10. AT&T (AS6478) at AADS 2517 + 875 = 3392 BGP prefix updates

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

1. MIBX(AS6218) at PacBell 34.03 (4322 ann, 127 entries)
2. VisiNet(AS6261) at Mae-East 10.93 (1038 ann, 95 entries)
3. CAIS(AS3491) at AADS 10.60 (11810 ann, 1114 entries)
4. ICI(AS6561) at Mae-West 8.15 (106 ann, 13 entries)
5. NetAxs(AS4969) at Mae-East 7.95 (1907 ann, 240 entries)
6. VisiNet(AS6261) at Mae-West 6.61 (979 ann, 148 entries)
7. IBMGlobal(AS2685) at AADS 5.70 (2707 ann, 475 entries)
8. WebSecure(AS6583) at AADS 5.00 (10 ann, 2 entries)
9. Internex(AS2828) at AADS 3.66 (238 ann, 65 entries)
10. OLEANE(AS2917) at Mae-East 3.48 (153 ann, 44 entries)
11. EXODUS(AS3967) at AADS 3.23 (339 ann, 105 entries)
12. GoodNet(AS5696) at AADS 3.18 (1357 ann, 427 entries)
13. Above(AS6461) at Paix 3.10 (254 ann, 82 entries)
14. internetMCI(AS3561) at AADS 2.86 (49154 ann, 17185 entries)
15. HLC(AS4565) at AADS 2.57 (167 ann, 65 entries)
16. INCnet(AS3857) at AADS 2.45 (137 ann, 56 entries)
17. Netcom(AS2551) at AADS 2.41 (758 ann, 314 entries)
18. WireHub(AS5496) at Mae-East 1.93 (29 ann, 15 entries)
19. Interpath(AS3407) at Mae-East 1.64 (54 ann, 33 entries)
20. Genuity(AS3847) at AADS 1.53 (579 ann, 378 entries)

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

1. SPRINT (1239) at mae-east 3733
2. internetMCI (3561) at mae-east 796
3. BBNplanet (1) at mae-west 424
4. AGIS (4200) at mae-east 369
5. IBMGlobal (2685) at mae-east 235
6. AT&T (6478) at aads 199
7. Grid (6113) at pb 190
8. CAIS (3491) at mae-west 165
9. INAP.net (5646) at aads 163
10. Digex (2548) at mae-west 163






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