nanog mailing list archives
Re: IPv4 smaller than /24 leasing?
From: Michael Hallgren <mh () xalto net>
Date: Thu, 04 Jan 2018 23:07:08 +0100
Le 2018-01-04 20:16, Job Snijders a écrit :
On Thu, 4 Jan 2018 at 20:13, Filip Hruska <fhr () fhrnet eu> wrote:I have stumbled upon this site [1] which seems to offer /27 IPv4 leasing. They also claim "All of our IPv4 address space can be used on any networkin any location."I thought that the smallest prefix size one could get routed globally is/24?Yes So how does this work?Probably with GRE, IPIP or OpenVPN tunnels. Kind regards, Job
IPv4 /24 is commonly the minimal chunk advertised to (and accepted by) neighbors. If I run a global (or regional) network, I may advertise this /24 -- or rather an aggregate covering it -- over my diverse interconnection with neighbors, your /27 being part of the chunk and routed to you internally (if you're va customer)-- no need for encapsulation efforts. Similar scenario may be multi-upstream, subject to acceptance of "punching holes in aggregates"... Am I missing something? What's the trigger for doing tunneling here?
Happy New Year '18, by the way ! mh
Current thread:
- IPv4 smaller than /24 leasing? Filip Hruska (Jan 04)
- Re: IPv4 smaller than /24 leasing? Job Snijders (Jan 04)
- Re: IPv4 smaller than /24 leasing? William Herrin (Jan 04)
- Re: IPv4 smaller than /24 leasing? Michael Hallgren (Jan 04)
- Re: IPv4 smaller than /24 leasing? William Herrin (Jan 04)
- Re: IPv4 smaller than /24 leasing? Michael Hallgren (Jan 04)
- Re: IPv4 smaller than /24 leasing? Justin Wilson (Jan 04)
- Re: IPv4 smaller than /24 leasing? William Herrin (Jan 04)
- Re: IPv4 smaller than /24 leasing? Michael Hallgren (Jan 04)
- Re: IPv4 smaller than /24 leasing? Mike Hammett (Jan 04)
- Re: IPv4 smaller than /24 leasing? Michael Hallgren (Jan 05)
- Re: IPv4 smaller than /24 leasing? Mike Hammett (Jan 04)
- Re: IPv4 smaller than /24 leasing? William Herrin (Jan 04)
- Re: IPv4 smaller than /24 leasing? Dovid Bender (Jan 04)
- Re: IPv4 smaller than /24 leasing? Job Snijders (Jan 04)