03/02/98 Internet Routing Problems

From: stats@merit.edu
Date: Tue Mar 03 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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collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
194.250.214.0/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.240/28 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.32/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
194.250.214.96/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
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-West from ANS (AS1673) ASPATH=1673 1675 IGP
207.26.64.80/28 at PacBell from ANS (AS1673) ASPATH=1673 1675 IGP

Reserved AS Numbers
-------------------
AS65010 at Mae-East from ANS (AS1673) ASPATH=1673
AS65010 at PacBell from ANS (AS1673) ASPATH=1673

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

1. SPRINT (AS1239) at Mae-East 177822 + 50234 = 228056 BGP prefix updates
2. internetMCI (AS3561) at PacBell 47483 + 26801 = 74284 BGP prefix updates
3. IBMGlobal (AS2685) at AADS 1342 + 56498 = 57840 BGP prefix updates
4. NASA (AS297) at Mae-East 670 + 48845 = 49515 BGP prefix updates
5. OurWorld (AS7594) at Mae-West 486 + 48685 = 49171 BGP prefix updates
6. internetMCI (AS3561) at Mae-East 28968 + 12294 = 41262 BGP prefix updates
7. internetMCI (AS3561) at AADS 28301 + 11883 = 40184 BGP prefix updates
8. MainStreet (AS3720) at Mae-West 22 + 33923 = 33945 BGP prefix updates
9. WNA (AS2914) at Mae-East 15348 + 8196 = 23544 BGP prefix updates
10. WNA (AS2914) at Mae-West 15499 + 7505 = 23004 BGP prefix updates

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

1. u-net(AS5669) at Mae-West 45.43 (318 ann, 7 entries)
2. OLEANE(AS2917) at Mae-East 36.87 (1659 ann, 45 entries)
3. IPF(AS5409) at Mae-East 31.33 (1128 ann, 36 entries)
4. Cableol(AS5089) at Mae-East 28.25 (113 ann, 4 entries)
5. AIMnet(AS3763) at Mae-West 16.08 (804 ann, 50 entries)
6. EXODUS(AS3967) at PacBell 13.84 (1592 ann, 115 entries)
7. WNA(AS2914) at Mae-East 12.41 (15348 ann, 1237 entries)
8. highway1(AS7922) at Mae-East 12.12 (97 ann, 8 entries)
9. highway1(AS7922) at Mae-West 12.12 (97 ann, 8 entries)
10. INS(AS6660) at Mae-East 11.89 (428 ann, 36 entries)
11. u-net(AS5669) at Paix 11.88 (95 ann, 8 entries)
12. Internex(AS2828) at Mae-East 10.40 (842 ann, 81 entries)
13. Internex(AS2828) at AADS 9.44 (765 ann, 81 entries)
14. HLC(AS4565) at Mae-West 9.42 (678 ann, 72 entries)
15. SPRINT(AS1239) at Mae-East 8.97 (177822 ann, 19817 entries)
16. HLC(AS4565) at AADS 8.62 (621 ann, 72 entries)
17. HLC(AS4565) at Mae-East 8.61 (620 ann, 72 entries)
18. AGIS(AS4200) at Mae-East 8.26 (14793 ann, 1791 entries)
19. netrail(AS4006) at Mae-East 7.91 (174 ann, 22 entries)
20. Intermedia(AS6235) at Mae-East 7.07 (1505 ann, 213 entries)

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

1. SPRINT (1239) at mae-east 3879
2. internetMCI (3561) at pb 927
3. AGIS (4200) at mae-east 373
4. BBNplanet (1) at mae-west 372
5. IBMGlobal (2685) at mae-east 251
6. Grid (6113) at pb 211
7. Digex (2548) at mae-west 189
8. AT&T (6478) at aads 165
9. INAP.net (5646) at aads 149
10. CAIS (3491) at aads 135






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