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{ Tag Archives } verizon

ISP Fail: Private ASN on the Verizon/IS peering link

Spotted on local-route-server.is.co.za today: * 41.203.16.0/22 168.209.255.8 0 3741 2905 65419 i * 41.203.20.0/23 168.209.255.8 0 3741 2905 65419 i * 41.203.22.0/23 168.209.255.8 0 3741 2905 65419 i * 41.203.24.0/21 168.209.255.8 0 3741 2905 65419 i * 41.204.216.0/22 168.209.255.8 0 3741 2905 65419 i * 41.204.220.0/23 168.209.255.8 0 3741 2905 65419 i * 196.22.132.0/22 168.209.255.8 [...]

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Observations on backup-only BGP multi-homing

Last year, I set up a backup Internet link for (my then-employer) the University of Cape Town. The university has it’s own class-B block of provider independent IPv4 address space, so this required Multiple-Links-Single-IP-Space style multi-homing. Because the primary link was both fast (by South African standards) and very expensive, I had to figure out [...]

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