02/19/98 Internet Routing Problems

From: stats@merit.edu
Date: Fri Feb 20 1998 - 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.
Send comments and questions to ipma@merit.edu

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Also see http://www.caida.org for more information about Internet statistics
collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
192.168.203.38/32 at AADS from Merit (AS237) ASPATH=237 INCOMPLETE
192.168.203.38/32 at AADS from Merit (AS237) ASPATH=237 INCOMPLETE
194.207.0.128/28 at Mae-West from VBC (AS6320) ASPATH=6320 IGP
194.250.214.0/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.128/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.160/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.192/28 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.208/28 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.224/28 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.240/28 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.32/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.64/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.96/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.71.238.232/30 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
195.12.164.128/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 1299 1299 8516 INCOMPLETE
195.12.164.144/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 1299 1299 8516 INCOMPLETE
195.12.164.248/29 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 1299 1299 8516 INCOMPLETE
195.12.165.0/29 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 1299 1299 8516 INCOMPLETE
207.26.64.80/28 at Mae-East from ANS (AS1673) ASPATH=1673 1324 IGP
61.8.0.0/19 at Mae-East from IBMGlobal (AS2685) ASPATH=2685 5673 7657 7543 IGP
61.8.0.0/19 at Mae-West from IBMGlobal (AS2685) ASPATH=2685 5673 7657 7543 IGP
61.8.0.0/19 at AADS from IBMGlobal (AS2685) ASPATH=2685 5673 7657 7543 IGP

Reserved AS Numbers
-------------------
AS65010 at Mae-West from ANS (AS1673) ASPATH=1673 2056 65010 10593 IGP

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

1. idc (AS4694) at Mae-West 10 + 221262 = 221272 BGP prefix updates
2. NetKonect (AS6716) at Mae-East 22 + 192467 = 192489 BGP prefix updates
3. SPRINT (AS1239) at Mae-East 123552 + 55049 = 178601 BGP prefix updates
4. OurWorld (AS7594) at Mae-West 2342 + 98417 = 100759 BGP prefix updates
5. internetMCI (AS3561) at Mae-East 51302 + 17168 = 68470 BGP prefix updates
6. internetMCI (AS3561) at AADS 49600 + 18500 = 68100 BGP prefix updates
7. internetMCI (AS3561) at PacBell 51253 + 16631 = 67884 BGP prefix updates
8. OurWorld (AS7594) at Paix 879 + 49252 = 50131 BGP prefix updates
9. MainStreet (AS3720) at Mae-West 37 + 46051 = 46088 BGP prefix updates
10. BBNplanet (AS1) at Mae-East 21935 + 4947 = 26882 BGP prefix updates

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

1. Servint(AS7960) at Mae-East 92.00 (92 ann, 1 entries)
2. Cableol(AS5089) at Mae-East 21.75 (87 ann, 4 entries)
3. EUnet(AS286) at Mae-East 16.58 (14757 ann, 890 entries)
4. FiberNet(AS6259) at Mae-West 15.60 (78 ann, 5 entries)
5. WCG(AS7911) at PacBell 14.50 (29 ann, 2 entries)
6. FiberNet(AS6259) at Mae-East 13.60 (68 ann, 5 entries)
7. highway1(AS7922) at Mae-West 13.38 (107 ann, 8 entries)
8. u-net(AS5669) at Mae-West 13.12 (105 ann, 8 entries)
9. MIBX(AS6218) at PacBell 12.60 (63 ann, 5 entries)
10. OurWorld(AS7594) at Mae-West 12.59 (2342 ann, 186 entries)
11. OLEANE(AS2917) at Mae-East 11.26 (473 ann, 42 entries)
12. highway1(AS7922) at Mae-East 10.88 (87 ann, 8 entries)
13. AGIS(AS4200) at Mae-East 10.76 (19006 ann, 1766 entries)
14. WNA(AS2914) at Mae-East 10.34 (11320 ann, 1095 entries)
15. AIMnet(AS3763) at Mae-West 7.98 (399 ann, 50 entries)
16. Intermedia(AS6235) at Mae-East 6.01 (1299 ann, 216 entries)
17. SPRINT(AS1239) at Mae-East 5.90 (123552 ann, 20950 entries)
18. VisiNet(AS6261) at Mae-West 5.67 (993 ann, 175 entries)
19. VisiNet(AS6261) at Mae-East 5.37 (940 ann, 175 entries)
20. WNA(AS2914) at Mae-West 5.29 (12234 ann, 2312 entries)

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

1. SPRINT (1239) at mae-east 3889
2. internetMCI (3561) at aads 890
3. BBNplanet (1) at mae-west 418
4. AGIS (4200) at mae-east 377
5. IBMGlobal (2685) at mae-east 227
6. Grid (6113) at pb 204
7. Digex (2548) at mae-west 195
8. CAIS (3491) at mae-east 189
9. INAP.net (5646) at aads 145
10. AT&T (6478) at pb 143






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