04/06/98 Internet Routing Problems

From: stats@merit.edu
Date: Tue Apr 07 1998 - 10:00:04 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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Reserved Network and Host Announcements
---------------------------------------
195.101.148.0/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
195.101.148.128/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
195.101.148.160/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
195.101.148.192/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
195.101.148.224/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
195.101.148.32/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
195.101.148.64/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
195.101.148.96/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
195.6.71.0/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
195.6.71.128/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
195.6.71.160/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
195.6.71.192/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
195.6.71.224/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
195.6.71.32/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
195.6.71.64/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
195.6.71.96/27 at Mae-East from AS1673 ASPATH=1673 1699 6712 IGP
198.80.116.192/27 at Mae-East from AS1673 ASPATH=1673 1670 IGP
200.30.42.16/28 at Mae-East from AS4200 ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.32/27 at Mae-East from AS4200 ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.64/29 at Mae-East from AS4200 ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.72/29 at Mae-East from AS4200 ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.80/30 at Mae-East from AS4200 ASPATH=4200 6371 7997 INCOMPLETE
206.84.149.20/32 at Mae-East from AS4200 ASPATH=4200 IGP
207.26.64.80/28 at Mae-East from AS1673 ASPATH=1673 1324 IGP
209.88.14.0/28 at Mae-East from AS4200 ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.128/27 at Mae-East from AS4200 ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.240/28 at Mae-East from AS4200 ASPATH=4200 6371 7997 INCOMPLETE
209.88.15.0/27 at Mae-East from AS4200 ASPATH=4200 6371 7997 INCOMPLETE

Reserved AS Numbers
-------------------
AS64600 at Mae-East from AS297 ASPATH=297 64600 IGP

AS65000 at Mae-East from AS3561 ASPATH=3561 4230 65000 IGP

AS65350 at Mae-East from AS6261 ASPATH=6261 7594 65350 7706 4802 INCOMPLETE

AS65531 at Mae-East from AS3491 ASPATH=3491 6261 7594 65350 7706 65531 IGP

AS64600 at Mae-West from AS297 ASPATH=297 64600 IGP

AS65350 at Mae-West from AS6261 ASPATH=6261 7594 65350 7706 4802 INCOMPLETE

AS65531 at Mae-West from AS6261 ASPATH=6261 7594 65350 7706 65531 IGP

AS65000 at AADS from AS3561 ASPATH=3561 4230 65000 IGP

AS65350 at AADS from AS3491 ASPATH=3491 6261 7594 65350 7706 4802 INCOMPLETE

AS65531 at AADS from AS3491 ASPATH=3491 6261 7594 65350 7706 65531 IGP

AS65000 at PacBell from AS3561 ASPATH=3561 4230 65000 IGP

AS65350 at Paix from AS7594 ASPATH=7594 65350 7704 IGP

AS65531 at Paix from AS7594 ASPATH=7594 65350 7706 65531 IGP

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

1. SPRINT (AS1239) at Mae-East 205511 + 29824 = 235335 BGP prefix updates
2. BBNplanet (AS1) at Mae-East 50384 + 25917 = 76301 BGP prefix updates
3. internetMCI (AS3561) at PacBell 56205 + 13610 = 69815 BGP prefix updates
4. internetMCI (AS3561) at AADS 49257 + 15239 = 64496 BGP prefix updates
5. internetMCI (AS3561) at Mae-East 47594 + 15901 = 63495 BGP prefix updates
6. AT&T (AS6478) at AADS 41394 + 4897 = 46291 BGP prefix updates
7. AT&T (AS6478) at PacBell 33401 + 5354 = 38755 BGP prefix updates
8. MainStreet (AS3720) at Mae-West 2 + 32542 = 32544 BGP prefix updates
9. ANS (AS1673) at Mae-East 21900 + 322 = 22222 BGP prefix updates
10. BBNplanet (AS1) at Mae-West 13767 + 7268 = 21035 BGP prefix updates

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

1. ANS(AS1673) at Mae-East 212.62 (21900 ann, 103 entries)
2. IBMGlobal(AS2685) at AADS 112.95 (2485 ann, 22 entries)
3. u-net(AS5669) at Mae-West 59.50 (595 ann, 10 entries)
4. OLEANE(AS2917) at Mae-East 46.80 (2106 ann, 45 entries)
5. Cableol(AS5089) at Mae-East 30.00 (120 ann, 4 entries)
6. Merit(AS237) at AADS 26.71 (2965 ann, 111 entries)
7. u-net(AS5669) at Paix 18.20 (182 ann, 10 entries)
8. AIMnet(AS3763) at Mae-West 17.96 (934 ann, 52 entries)
9. IPF(AS5409) at Mae-East 14.72 (368 ann, 25 entries)
10. VBC(AS6320) at Mae-West 14.35 (330 ann, 23 entries)
11. DREN(AS668) at Mae-West 12.70 (3138 ann, 247 entries)
12. AT&T(AS6478) at AADS 11.34 (41394 ann, 3651 entries)
13. highway1(AS7922) at Mae-West 11.22 (101 ann, 9 entries)
14. highway1(AS7922) at Mae-East 10.78 (97 ann, 9 entries)
15. SPRINT(AS1239) at Mae-East 9.54 (205511 ann, 21542 entries)
16. AT&T(AS6478) at PacBell 9.18 (33401 ann, 3640 entries)
17. BBNplanet(AS1) at Mae-East 8.19 (50384 ann, 6151 entries)
18. DREN(AS668) at Mae-East 7.19 (1739 ann, 242 entries)
19. AGIS(AS4200) at Mae-East 5.68 (10904 ann, 1919 entries)
20. AT&T(AS6478) at Mae-West 4.33 (15779 ann, 3643 entries)






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