10/19/97 Internet Routing Problems

From: stats@merit.edu
Date: Mon Oct 20 1997 - 10:00:08 EDT


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
---------------------------------------
No routing problems were detected

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

AS64514 at AADS from internetMCI (AS3561) ASPATH=3561 8342 2118 64514 Incomplete

AS64517 at AADS from internetMCI (AS3561) ASPATH=3561 8342 2118 64517 IGP

AS64514 at PacBell from internetMCI (AS3561) ASPATH=3561 8342 2118 64514 Incomplete

AS64517 at PacBell from internetMCI (AS3561) ASPATH=3561 8342 2118 64517 IGP

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

1. NetKonect (AS6716) at Mae-East 25 + 648658 = 648683 BGP prefix updates
2. GetNet (AS5784) at Mae-East 27 + 289831 = 289858 BGP prefix updates
3. SPRINT (AS1239) at Mae-East 233012 + 12939 = 245951 BGP prefix updates
4. USCyber (AS4136) at Mae-East 70 + 186565 = 186635 BGP prefix updates
5. internetMCI (AS3561) at Mae-East 103130 + 8072 = 111202 BGP prefix updates
6. telia (AS1299) at Mae-East 2607 + 86465 = 89072 BGP prefix updates
7. idc (AS4694) at Mae-West 22 + 75496 = 75518 BGP prefix updates
8. Interpath (AS3407) at Mae-East 431 + 65227 = 65658 BGP prefix updates
9. internetMCI (AS3561) at PacBell 54239 + 8580 = 62819 BGP prefix updates
10. BBNplanet (AS1) at Mae-East 42813 + 3812 = 46625 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 125.51 (5899 ann, 47 entries)
2. Cableol(AS5089) at Mae-East 19.00 (38 ann, 2 entries)
3. HLC(AS4565) at Mae-East 13.62 (899 ann, 66 entries)
4. EXODUS(AS3967) at Mae-East 12.81 (871 ann, 68 entries)
5. AGIS(AS4200) at Mae-East 12.52 (20469 ann, 1635 entries)
6. SPRINT(AS1239) at Mae-East 11.64 (233012 ann, 20020 entries)
7. Nacamar(AS3257) at Mae-East 9.70 (514 ann, 53 entries)
8. netrail(AS4006) at Mae-East 9.33 (196 ann, 21 entries)
9. LinkAGE(AS4058) at Mae-East 9.31 (149 ann, 16 entries)
10. CableInet(AS5462) at Mae-East 9.23 (397 ann, 43 entries)
11. Internex(AS2828) at Mae-East 9.22 (581 ann, 63 entries)
12. BBNplanet(AS1) at Mae-East 9.11 (42813 ann, 4697 entries)
13. Voicenet(AS3932) at Mae-East 9.00 (495 ann, 55 entries)
14. Priori(AS10303) at Mae-East 8.92 (107 ann, 12 entries)
15. Netcom(AS2551) at Mae-East 8.90 (2990 ann, 336 entries)
16. AT&T(AS6478) at Mae-East 8.50 (13409 ann, 1577 entries)
17. Interpath(AS3407) at Mae-East 8.45 (431 ann, 51 entries)
18. DISC(AS7170) at Mae-East 8.30 (730 ann, 88 entries)
19. HLC(AS4565) at Mae-West 8.23 (543 ann, 66 entries)
20. EUnet(AS286) at Mae-East 8.22 (9512 ann, 1157 entries)

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

1. internetMCI (3561) at pb 714
2. BBNplanet (1) at mae-west 400
3. AT&T (6478) at mae-west 238
4. CWIX (5683) at mae-west 188
5. Grid (6113) at pb 175
6. NASA (297) at mae-west 169
7. Digex (2548) at mae-west 163
8. CAIS (3491) at aads 142
9. INAP.net (5646) at aads 129
10. ANS (1673) at mae-west 124






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