nanog mailing list archives
Re: nested prefixes in Internet
From: Owen DeLong <owen () delong com>
Date: Tue, 11 Oct 2016 15:58:09 -0700
On Oct 10, 2016, at 14:59 , Baldur Norddahl <baldur.norddahl () gmail com> wrote: 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 link however.
Which isn’t really in the agreement between ISP-B and ISP-A unless it was specifically (and unusually) negotiated. Also, you’re assuming that the leased space came with a transit agreement. In many cases, address leases don’t, so consider the additional scenario where ISP-B leases addresses from ISP-A, but has transit contracts with ISP-C and ISP-D but no connection at all to ISP-A.
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.
Yes, but it doesn’t help if it also came in on a transit link. Any traffic you both receive and transmit on transit costs you money pretty much no matter who you are. Owen
Current thread:
- Re: nested prefixes in Internet Martin T (Oct 05)
- Re: nested prefixes in Internet Florian Weimer (Oct 05)
- Re: nested prefixes in Internet Martin T (Oct 09)
- Re: nested prefixes in Internet Roy (Oct 10)
- Re: nested prefixes in Internet joel jaeggli (Oct 10)
- Re: nested prefixes in Internet Roy (Oct 10)
- Re: nested prefixes in Internet Niels Bakker (Oct 10)
- Re: nested prefixes in Internet Baldur Norddahl (Oct 10)
- Re: nested prefixes in Internet Owen DeLong (Oct 10)
- Re: nested prefixes in Internet Baldur Norddahl (Oct 10)
- Re: nested prefixes in Internet Owen DeLong (Oct 11)
- Re: nested prefixes in Internet Martin T (Oct 19)
- Re: nested prefixes in Internet Owen DeLong (Oct 19)
- Re: nested prefixes in Internet Baldur Norddahl (Oct 19)
- Re: nested prefixes in Internet Martin T (Oct 09)
- Re: nested prefixes in Internet Florian Weimer (Oct 05)
- Re: nested prefixes in Internet Niels Bakker (Oct 10)
- Re: nested prefixes in Internet Matt Buford (Oct 19)
- Re: nested prefixes in Internet Martin T (Oct 24)
- RE: nested prefixes in Internet Luke Guillory (Oct 24)
- Re: nested prefixes in Internet Owen DeLong (Oct 24)
- Re: nested prefixes in Internet Luke Guillory (Oct 24)
- Re: nested prefixes in Internet Jimmy Hess (Oct 11)