04/15/98 Internet Routing Problems

From: stats@merit.edu
Date: Thu Apr 16 1998 - 10:00:06 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
---------------------------------------
1.0.0.0/8 at Mae-East from SPRINT (AS1239) ASPATH=1239 4003 6619 INCOMPLETE
193.234.249.64/27 at Mae-East from AGIS (AS4200) ASPATH=4200 1833 1833 1299 3301 INCOMPLETE
198.80.116.192/27 at Mae-East 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
206.185.236.4/30 at Mae-East from AGIS (AS4200) ASPATH=4200 IGP
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
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
209.88.14.64/28 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

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

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

AS65000 at AADS from internetMCI (AS3561) ASPATH=3561 4230 65000 IGP

AS65000 at PacBell from internetMCI (AS3561) ASPATH=3561 4230 65000 IGP

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

1. SPRINT (AS1239) at Mae-East 149522 + 42346 = 191868 BGP prefix updates
2. internetMCI (AS3561) at Mae-East 48535 + 19640 = 68175 BGP prefix updates
3. internetMCI (AS3561) at PacBell 49806 + 15653 = 65459 BGP prefix updates
4. internetMCI (AS3561) at AADS 44224 + 17550 = 61774 BGP prefix updates
5. Nacamar (AS3257) at Mae-West 30383 + 30299 = 60682 BGP prefix updates
6. IOS (AS5000) at Mae-East 136 + 50066 = 50202 BGP prefix updates
7. MainStreet (AS3720) at Mae-West 0 + 33145 = 33145 BGP prefix updates
8. BBNplanet (AS1) at Mae-East 22755 + 9606 = 32361 BGP prefix updates
9. AT&T (AS6478) at AADS 27006 + 4196 = 31202 BGP prefix updates
10. AT&T (AS6478) at PacBell 24587 + 3491 = 28078 BGP prefix updates

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

1. SPRINT (1239) at mae-east 3867
2. internetMCI (3561) at pb 1144
3. BBNplanet (1) at mae-west 453
4. AGIS (4200) at mae-east 370
5. Grid (6113) at pb 345
6. IBMGlobal (2685) at mae-west 314
7. AT&T (6478) at pb 241
8. Digex (2548) at mae-west 236
9. INAP.net (5646) at mae-west 219
10. NASA (297) at mae-west 160






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