03/20/98 Internet Routing Problems

From: stats@merit.edu
Date: Sat Mar 21 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.
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Also see http://www.caida.org for more information about Internet statistics
collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
194.79.160.128/27 at Mae-East from NetAxs (AS4969) ASPATH=4969 4495 6761 IGP
194.79.160.32/27 at Mae-East from NetAxs (AS4969) ASPATH=4969 4495 6761 IGP
194.79.160.64/27 at Mae-East from NetAxs (AS4969) ASPATH=4969 4495 6761 IGP
195.6.71.0/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.0/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.128/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.128/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.160/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.160/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.192/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.192/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.224/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.224/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.32/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.32/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.64/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.64/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.96/27 at Mae-East from ANS (AS1673) ASPATH=1673 1699 6712 IGP
195.6.71.96/27 at Mae-West from ANS (AS1673) ASPATH=1673 1699 6712 IGP
198.80.116.192/27 at Mae-East from ANS (AS1673) ASPATH=1673 1670 IGP
198.80.116.192/27 at Mae-West from ANS (AS1673) ASPATH=1673 1670 IGP
198.80.116.192/27 at PacBell from ANS (AS1673) ASPATH=1673 1670 IGP
200.30.42.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.32/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.64/29 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.72/29 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
200.30.42.80/30 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
202.163.0.224/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 7589 IGP
202.163.0.52/30 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 7589 INCOMPLETE
202.163.4.0/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 7589 INCOMPLETE
202.163.4.16/28 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1299 7589 INCOMPLETE
206.84.149.20/32 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP
207.26.64.80/28 at Mae-East from ANS (AS1673) ASPATH=1673 1324 IGP
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
209.88.14.0/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.128/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.14.240/28 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE
209.88.15.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 6371 7997 INCOMPLETE

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

AS64810 at Mae-East from SPRINT (AS1239) ASPATH=1239 685 4134 64810 INCOMPLETE

AS64820 at Mae-East from WNA (AS2914) ASPATH=2914 685 4134 64820 64820 64820 IGP

AS65010 at Mae-East from ANS (AS1673) ASPATH=1673
AS65020 at Mae-East from SPRINT (AS1239) ASPATH=1239 685 4134 4134 4134 65020 INCOMPLETE

AS64930 at Mae-East from SPRINT (AS1239) ASPATH=1239 685 4134 4134 4134 64930 IGP

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

AS65010 at Mae-West from ANS (AS1673) ASPATH=1673
AS64820 at Mae-West from CERFnet (AS1740) ASPATH=1740 2914 685 4134 64820 64820 64820 IGP

AS65020 at Mae-West from WNA (AS2914) ASPATH=2914 685 4134 4134 4134 65020 INCOMPLETE

AS64820 at AADS from internetMCI (AS3561) ASPATH=3561 3940 685 685 4134 64820 64820 64820 IGP

AS65020 at AADS from internetMCI (AS3561) ASPATH=3561 3940 685 685 4134 4134 4134 65020 INCOMPLETE

AS65010 at PacBell from ANS (AS1673) ASPATH=1673
AS64820 at PacBell from internetMCI (AS3561) ASPATH=3561 3940 685 685 4134 64820 64820 64820 IGP

AS65020 at PacBell from internetMCI (AS3561) ASPATH=3561 3940 685 685 4134 4134 4134 65020 INCOMPLETE

AS64820 at Paix from WNA (AS2914) ASPATH=2914 685 4134 64820 64820 64820 IGP

AS65020 at Paix from WNA (AS2914) ASPATH=2914 685 4134 4134 4134 65020 INCOMPLETE

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

1. internetMCI (AS3561) at AADS 144034 + 17388 = 161422 BGP prefix updates
2. SPRINT (AS1239) at Mae-East 116658 + 21186 = 137844 BGP prefix updates
3. internetMCI (AS3561) at Mae-East 68170 + 17731 = 85901 BGP prefix updates
4. internetMCI (AS3561) at PacBell 55052 + 18625 = 73677 BGP prefix updates
5. IBMGlobal (AS2685) at Mae-East 2082 + 57454 = 59536 BGP prefix updates
6. IBMGlobal (AS2685) at Mae-West 1369 + 57936 = 59305 BGP prefix updates
7. IBMGlobal (AS2685) at AADS 1348 + 57366 = 58714 BGP prefix updates
8. AT&T (AS6478) at PacBell 51721 + 1047 = 52768 BGP prefix updates
9. AT&T (AS6478) at Mae-East 35475 + 1151 = 36626 BGP prefix updates
10. AT&T (AS6478) at Mae-West 26293 + 6450 = 32743 BGP prefix updates

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

1. IPF(AS5409) at Mae-East 138.67 (416 ann, 3 entries)
2. Ziplink(AS6345) at Mae-East 45.00 (180 ann, 4 entries)
3. Cableol(AS5089) at Mae-East 21.50 (86 ann, 4 entries)
4. AT&T(AS6478) at PacBell 20.74 (51721 ann, 2494 entries)
5. AIMnet(AS3763) at Mae-West 18.69 (972 ann, 52 entries)
6. ICI(AS6561) at Mae-West 17.00 (255 ann, 15 entries)
7. highway1(AS7922) at Mae-West 15.00 (120 ann, 8 entries)
8. AT&T(AS6478) at Mae-East 14.11 (35475 ann, 2514 entries)
9. highway1(AS7922) at Mae-East 13.50 (108 ann, 8 entries)
10. AGIS(AS4200) at Mae-East 12.18 (22304 ann, 1831 entries)
11. Above(AS6461) at PacBell 11.26 (2613 ann, 232 entries)
12. AT&T(AS6478) at Mae-West 10.46 (26293 ann, 2514 entries)
13. ThePlanet(AS5388) at Mae-West 8.54 (675 ann, 79 entries)
14. OurWorld(AS7594) at Mae-West 8.07 (2105 ann, 261 entries)
15. internetMCI(AS3561) at AADS 8.06 (144034 ann, 17860 entries)
16. WNA(AS2914) at Mae-East 7.92 (9533 ann, 1203 entries)
17. Nacamar(AS3257) at Mae-East 7.25 (471 ann, 65 entries)
18. OneCall(AS6402) at Mae-East 6.56 (466 ann, 71 entries)
19. HLC(AS4565) at Mae-East 6.50 (390 ann, 60 entries)
20. ThePlanet(AS5388) at Mae-East 6.49 (526 ann, 81 entries)






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