nested prefixes in Internet
baldur.norddahl at gmail.com
Mon Oct 10 21:59:20 UTC 2016
Den 10/10/2016 kl. 22.27 skrev Owen DeLong:
> Not true… There are myriad reasons that the /24 might not reach a network peered with ISP-A, including the possibility of being a downstream customer of a network peered with or buying transit from ISP-A. In the latter case, not an issue, since it’s paid transit, but in the former (peered, not transit), again, ISP-A is probably not super excited to carry traffic that someone isn’t paying them to carry.
But ISP-A is in fact being paid to carry the traffic. Supposedly ISP-B
has a paid transit relation to ISP-A. In the case the transit link is
down ISP-A might have to transport the traffic through a less profitable
I know that if ISP-A was my network I would be making money even with
the transit link down. Yes I might have to transport something out of my
network through one of my transits, but outbound traffic is in fact free
for us because we are heavy inbound loaded.
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