10/06/97 Internet Routing Problems

From: stats@merit.edu
Date: Tue Oct 07 1997 - 10:00:03 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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Also see http://www.caida.org for more information about Internet statistics
collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
137.39.140.12/30 at Mae-East from INAP.net (AS5646) ASPATH=5646 6555 1 1673 IGP
137.39.140.12/30 at Mae-West from INAP.net (AS5646) ASPATH=5646 6555 1 1673 IGP
137.39.140.12/30 at AADS from INAP.net (AS5646) ASPATH=5646 6555 1 1673 IGP
172.16/16 at AADS from INCnet (AS3857) ASPATH=3857 Incomplete
192.116.206.112/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.206.128/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.206.192/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.206.80/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.206.96/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.207.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.207.48/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.207.64/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.213.48/28 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.226.64/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.116.226.96/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
192.168.1/24 at AADS from INCnet (AS3857) ASPATH=3857 Incomplete
192.168.125/24 at AADS from INCnet (AS3857) ASPATH=3857 Incomplete
192.168.4/24 at AADS from INCnet (AS3857) ASPATH=3857 Incomplete
192.168.5/24 at AADS from INCnet (AS3857) ASPATH=3857 Incomplete
192.239.22.0/29 at Mae-East from BBNplanet (AS1) ASPATH=1 IGP
192.239.22.0/29 at Mae-West from BBNplanet (AS1) ASPATH=1 IGP
193.189.241.0/27 at Mae-East from ANS (AS1673) ASPATH=1673 1667 6805 Incomplete
198.60.153.49/32 at Mae-East from GoodNet (AS5696) ASPATH=5696 Incomplete
198.60.153.49/32 at Mae-West from GoodNet (AS5696) ASPATH=5696 Incomplete
199.222.33.0/28 at Mae-East from ANS (AS1673) ASPATH=1673 1674 IGP
199.222.33.0/28 at Mae-West from ANS (AS1673) ASPATH=1673 1674 IGP
199.222.33.16/28 at Mae-East from ANS (AS1673) ASPATH=1673 1674 IGP
199.222.33.16/28 at Mae-West from ANS (AS1673) ASPATH=1673 1674 IGP
202.223.244.128/32 at Mae-East from INAP.net (AS5646) ASPATH=5646 2907 IGP
202.223.244.128/32 at Mae-West from INAP.net (AS5646) ASPATH=5646 2907 IGP
202.223.244.96/32 at Mae-East from INAP.net (AS5646) ASPATH=5646 2907 IGP
202.223.244.96/32 at Mae-West from INAP.net (AS5646) ASPATH=5646 2907 IGP
204.151.108.16/29 at Mae-West from ANS (AS1673) ASPATH=1673 1670 IGP
204.151.108.24/29 at Mae-West from ANS (AS1673) ASPATH=1673 1670 IGP
204.151.108.32/29 at Mae-West from ANS (AS1673) ASPATH=1673 1699 IGP
204.151.184.252/30 at Mae-West from ANS (AS1673) ASPATH=1673 1129 IGP
204.223.87.16/28 at Mae-West from DISA (AS568) ASPATH=568 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 3542 Incomplete
204.223.87.32/28 at Mae-West from DISA (AS568) ASPATH=568 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 3542 Incomplete
204.223.87.48/28 at Mae-West from DISA (AS568) ASPATH=568 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 3542 Incomplete
204.223.87.64/28 at Mae-West from DISA (AS568) ASPATH=568 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 1913 3542 Incomplete
206.80.170.204/30 at Mae-East from Grid (AS6113) ASPATH=6113 IGP
206.80.170.204/30 at Mae-West from Grid (AS6113) ASPATH=6113 IGP
207.212.14.32/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5672 10501 IGP
210.137.74.96/27 at Mae-East from INAP.net (AS5646) ASPATH=5646 2907 Incomplete
210.137.74.96/27 at Mae-West from INAP.net (AS5646) ASPATH=5646 2907 Incomplete

Reserved AS Numbers
-------------------
AS65523 at Mae-East from internetMCI (AS3561) ASPATH=3561 7 786 65523 5669 EGP

AS65515 at Mae-East from Digex (AS2548) ASPATH=2548 5415 65515 8207 IGP

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

AS65523 at AADS from internetMCI (AS3561) ASPATH=3561 7 786 65523 5669 EGP

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

1. DISA (AS568) at Mae-West 8067 + 6326026 = 6334093 BGP prefix updates
2. GetNet (AS5784) at Mae-East 9 + 2217158 = 2217167 BGP prefix updates
3. Grid (AS6113) at Mae-East 8277 + 564798 = 573075 BGP prefix updates
4. Grid (AS6113) at PacBell 1618 + 551461 = 553079 BGP prefix updates
5. Grid (AS6113) at Mae-West 3507 + 549097 = 552604 BGP prefix updates
6. NetKonect (AS6716) at Mae-East 16 + 295139 = 295155 BGP prefix updates
7. internetMCI (AS3561) at Mae-East 190840 + 39216 = 230056 BGP prefix updates
8. SPRINT (AS1239) at Mae-East 183349 + 27844 = 211193 BGP prefix updates
9. USCyber (AS4136) at Mae-East 15 + 201621 = 201636 BGP prefix updates
10. idc (AS4694) at Mae-West 210 + 187597 = 187807 BGP prefix updates

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

1. Netcom(AS2551) at Mae-East 33.43 (11233 ann, 336 entries)
2. IXI(AS5418) at Mae-East 22.00 (66 ann, 3 entries)
3. internetMCI(AS3561) at Mae-East 11.18 (190840 ann, 17064 entries)
4. WireHub(AS5496) at Mae-East 10.60 (159 ann, 15 entries)
5. Internex(AS2828) at Mae-East 9.79 (617 ann, 63 entries)
6. DISA(AS568) at Mae-West 9.09 (8067 ann, 887 entries)
7. ThePlanet(AS5388) at Mae-East 9.03 (262 ann, 29 entries)
8. Grid(AS6113) at Mae-East 9.02 (8277 ann, 918 entries)
9. SPRINT(AS1239) at Mae-East 8.55 (183349 ann, 21443 entries)
10. Netcom(AS2551) at Mae-West 8.00 (2720 ann, 340 entries)
11. GoodNet(AS5696) at Mae-East 7.89 (3393 ann, 430 entries)
12. WNA(AS2914) at Mae-East 7.75 (5943 ann, 767 entries)
13. Dialnet(AS5552) at Mae-East 7.60 (555 ann, 73 entries)
14. DREN(AS668) at Mae-East 7.50 (1576 ann, 210 entries)
15. EXODUS(AS3967) at Mae-East 7.13 (478 ann, 67 entries)
16. AT&T(AS6478) at Mae-East 7.11 (9633 ann, 1354 entries)
17. BBNplanet(AS1) at Mae-East 7.02 (32197 ann, 4587 entries)
18. ICI(AS6561) at Mae-West 7.00 (105 ann, 15 entries)
19. AGIS(AS4200) at Mae-East 6.50 (11510 ann, 1772 entries)
20. INAP.net(AS5646) at Mae-East 6.23 (9795 ann, 1573 entries)

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

1. SPRINT (1239) at mae-east 3716
2. internetMCI (3561) at mae-east 625
3. BBNplanet (1) at mae-west 374
4. AGIS (4200) at mae-east 353
5. CWIX (5683) at mae-east 224
6. AT&T (6478) at mae-east 213
7. Grid (6113) at pb 170
8. Digex (2548) at mae-west 162
9. CAIS (3491) at mae-west 137
10. ANS (1673) at mae-west 129






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