09/25/97 Internet Routing Problems

From: stats@merit.edu
Date: Fri Sep 26 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.
Send comments and questions to ipma@merit.edu

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Also see http://www.caida.org for more information about Internet statistics
collection research efforts.

Reserved Network and Host Announcements
---------------------------------------
1/8 at Mae-East from SPRINT (AS1239) ASPATH=1239 4004 6568 6568 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
193.189.241.0/27 at Mae-East from ANS (AS1673) ASPATH=1673 1667 6805 Incomplete
193.189.241.0/27 at Mae-West from ANS (AS1673) ASPATH=1673 1667 6805 Incomplete
193.189.241.0/27 at PacBell from ANS (AS1673) ASPATH=1673 1667 6805 Incomplete
198.60.153.49/32 at Mae-East from GoodNet (AS5696) ASPATH=5696 Incomplete
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 PacBell from Grid (AS6113) ASPATH=6113 IGP
207.227.0.216/30 at Mae-West from INAP.net (AS5646) ASPATH=5646 38 IGP

Reserved AS Numbers
-------------------
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

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

1. SPRINT (AS1239) at Mae-East 191058 + 85575 = 276633 BGP prefix updates
2. USCyber (AS4136) at Mae-East 0 + 230591 = 230591 BGP prefix updates
3. NetKonect (AS6716) at Mae-East 11 + 218262 = 218273 BGP prefix updates
4. internetMCI (AS3561) at AADS 56044 + 141104 = 197148 BGP prefix updates
5. GetNet (AS5784) at Mae-East 0 + 193266 = 193266 BGP prefix updates
6. Grid (AS6113) at Mae-East 1619 + 191030 = 192649 BGP prefix updates
7. Grid (AS6113) at PacBell 3225 + 187671 = 190896 BGP prefix updates
8. Grid (AS6113) at Mae-West 453 + 189361 = 189814 BGP prefix updates
9. DISA (AS568) at Mae-West 2820 + 127133 = 129953 BGP prefix updates
10. Interpath (AS3407) at Mae-East 419 + 118032 = 118451 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 11.93 (3878 ann, 325 entries)
2. SPRINT(AS1239) at Mae-East 9.58 (191058 ann, 19945 entries)
3. AGIS(AS4200) at Mae-East 8.98 (14302 ann, 1592 entries)
4. Interpath(AS3407) at Mae-East 8.38 (419 ann, 50 entries)
5. AT&T(AS6478) at PacBell 7.36 (9474 ann, 1288 entries)
6. Netcom(AS2551) at Mae-West 6.42 (2124 ann, 331 entries)
7. GoodNet(AS5696) at Mae-East 5.83 (2407 ann, 413 entries)
8. EXODUS(AS3967) at PacBell 5.52 (364 ann, 66 entries)
9. Above(AS6461) at Mae-East 5.44 (446 ann, 82 entries)
10. EXODUS(AS3967) at Mae-East 5.17 (341 ann, 66 entries)
11. Above(AS6461) at Mae-West 5.07 (416 ann, 82 entries)
12. Netcom(AS2551) at AADS 5.03 (1664 ann, 331 entries)
13. DISC(AS7170) at Mae-East 4.97 (179 ann, 36 entries)
14. Internex(AS2828) at AADS 4.89 (308 ann, 63 entries)
15. VisiNet(AS6261) at Mae-West 4.86 (238 ann, 49 entries)
16. AT&T(AS6478) at AADS 4.82 (6257 ann, 1297 entries)
17. ISI.Net(AS6196) at Mae-West 4.80 (48 ann, 10 entries)
18. Xara(AS5413) at Mae-East 4.75 (252 ann, 53 entries)
19. Above(AS6461) at PacBell 4.43 (368 ann, 83 entries)
20. GEOnet(AS3356) at PacBell 4.41 (428 ann, 97 entries)

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

1. SPRINT (1239) at mae-east 3712
2. internetMCI (3561) at pb 530
3. BBNplanet (1) at mae-west 419
4. AGIS (4200) at mae-east 408
5. Grid (6113) at mae-east 225
6. CWIX (5683) at mae-west 208
7. AT&T (6478) at pb 205
8. Digex (2548) at mae-east 135
9. CAIS (3491) at aads 132
10. (0) at paix 116






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