10/15/97 Internet Routing Problems

From: stats@merit.edu
Date: Thu Oct 16 1997 - 10:00:09 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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Reserved Network and Host Announcements
---------------------------------------
No routing problems were detected

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

1. internetMCI (AS3561) at PacBell 83716 + 10989 = 94705 BGP prefix updates
2. Grid (AS6113) at PacBell 7935 + 4167 = 12102 BGP prefix updates
3. ANS (AS1673) at PacBell 4017 + 891 = 4908 BGP prefix updates
4. AT&T (AS6478) at PacBell 2543 + 704 = 3247 BGP prefix updates
5. GEOnet (AS3356) at PacBell 357 + 78 = 435 BGP prefix updates
6. EXODUS (AS3967) at PacBell 202 + 187 = 389 BGP prefix updates
7. Netcom (AS2551) at PacBell 147 + 129 = 276 BGP prefix updates
8. HLC (AS4565) at Paix 180 + 91 = 271 BGP prefix updates
9. Above (AS6461) at PacBell 101 + 65 = 166 BGP prefix updates
10. Internex (AS2828) at PacBell 129 + 25 = 154 BGP prefix updates

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

1. Grid(AS6113) at PacBell 9.30 (7935 ann, 853 entries)
2. internetMCI(AS3561) at PacBell 5.25 (83716 ann, 15960 entries)
3. GEOnet(AS3356) at PacBell 4.41 (357 ann, 81 entries)
4. EXODUS(AS3967) at PacBell 3.01 (202 ann, 67 entries)
5. HLC(AS4565) at Paix 2.73 (180 ann, 66 entries)
6. ANS(AS1673) at PacBell 1.94 (4017 ann, 2074 entries)
7. Internex(AS2828) at PacBell 1.93 (129 ann, 67 entries)
8. AT&T(AS6478) at PacBell 1.56 (2543 ann, 1633 entries)
9. Above(AS6461) at PacBell 1.22 (101 ann, 83 entries)
10. EXODUS(AS3967) at Paix 1.04 (70 ann, 67 entries)
11. MIBX(AS6218) at PacBell 0.50 (8 ann, 16 entries)
12. u-net(AS5669) at Paix 0.50 (4 ann, 8 entries)
13. WebPros(AS6123) at Paix 0.50 (1 ann, 2 entries)
14. Netcom(AS2551) at PacBell 0.44 (147 ann, 335 entries)
15. Genuity(AS3847) at Paix 0.26 (99 ann, 383 entries)
16. Iconnet(AS3951) at PacBell 0.18 (21 ann, 117 entries)
17. Above(AS6461) at Paix 0.17 (14 ann, 83 entries)
18. Iconnet(AS3951) at Paix 0.02 (3 ann, 124 entries)
19. (AS) at 0.00 (0 ann, 0 entries)
20. (AS) at 0.00 (0 ann, 0 entries)






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