12/03/97 Internet Routing Problems

From: stats@merit.edu
Date: Thu Dec 04 1997 - 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.
Send comments and questions to ipma@merit.edu

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Reserved Network and Host Announcements
---------------------------------------
192.116.222.0/27 at Mae-East from AGIS (AS4200) ASPATH=4200 5486 Incomplete
193.235.137.16/28 at Mae-East from telia (AS1299) ASPATH=1299 1299 1299 1299 1299 3301 Incomplete
193.235.137.32/28 at Mae-East from telia (AS1299) ASPATH=1299 1299 1299 1299 1299 3301 Incomplete
194.117.132.148/30 at Mae-East from CableInet (AS5462) ASPATH=5462 6676 IGP
194.117.132.184/30 at Mae-East from CableInet (AS5462) ASPATH=5462 6676 IGP

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

AS65534 at Mae-East from internetMCI (AS3561) ASPATH=3561 4926 4926 4926 65534 IGP

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

AS65534 at AADS from internetMCI (AS3561) ASPATH=3561 4926 4926 4926 65534 IGP

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

1. SPRINT (AS1239) at Mae-East 207900 + 52482 = 260382 BGP prefix updates
2. idc (AS4694) at Mae-West 173 + 223890 = 224063 BGP prefix updates
3. GetNet (AS5784) at Mae-East 10 + 142432 = 142442 BGP prefix updates
4. NetKonect (AS6716) at Mae-East 0 + 139776 = 139776 BGP prefix updates
5. Interpath (AS3407) at Mae-East 49 + 100685 = 100734 BGP prefix updates
6. Priori (AS10303) at Mae-West 62 + 94800 = 94862 BGP prefix updates
7. Priori (AS10303) at Mae-East 53 + 93885 = 93938 BGP prefix updates
8. USCyber (AS4136) at Mae-East 0 + 86105 = 86105 BGP prefix updates
9. CompuServe (AS4183) at Mae-East 3 + 60179 = 60182 BGP prefix updates
10. internetMCI (AS3561) at AADS 40370 + 17225 = 57595 BGP prefix updates

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

1. CAIS(AS3491) at Mae-West 54.04 (21345 ann, 395 entries)
2. Voicenet(AS3932) at Mae-East 15.19 (805 ann, 53 entries)
3. ValueServe(AS7374) at Mae-West 14.67 (44 ann, 3 entries)
4. HLC(AS4565) at AADS 12.35 (852 ann, 69 entries)
5. ICI(AS6561) at Mae-West 12.31 (197 ann, 16 entries)
6. HLC(AS4565) at Mae-West 12.12 (836 ann, 69 entries)
7. HLC(AS4565) at Mae-East 11.77 (812 ann, 69 entries)
8. AT&T(AS6478) at Mae-West 10.46 (20521 ann, 1961 entries)
9. SPRINT(AS1239) at Mae-East 10.25 (207900 ann, 20285 entries)
10. AGIS(AS4200) at Mae-East 7.88 (7154 ann, 908 entries)
11. Priori(AS10303) at Mae-West 7.75 (62 ann, 8 entries)
12. WebSecure(AS6583) at Mae-East 7.50 (15 ann, 2 entries)
13. WebSecure(AS6583) at AADS 7.50 (15 ann, 2 entries)
14. WebSecure(AS6583) at Mae-West 7.00 (14 ann, 2 entries)
15. Priori(AS10303) at Mae-East 6.62 (53 ann, 8 entries)
16. CWIX(AS5683) at Mae-West 6.33 (8383 ann, 1324 entries)
17. HE(AS6939) at Mae-West 5.89 (53 ann, 9 entries)
18. LinkAGE(AS4058) at Mae-East 5.44 (87 ann, 16 entries)
19. Above(AS6461) at Mae-East 5.03 (402 ann, 80 entries)
20. INX(AS8218) at Mae-East 4.86 (277 ann, 57 entries)

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

1. SPRINT (1239) at mae-east 3622
2. internetMCI (3561) at aads 619
3. BBNplanet (1) at mae-west 401
4. AGIS (4200) at mae-east 248
5. AT&T (6478) at mae-west 212
6. IBMGlobal (2685) at aads 202
7. Grid (6113) at pb 174
8. CAIS (3491) at aads 160
9. INAP.net (5646) at aads 143
10. Digex (2548) at mae-west 140






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