nanog mailing list archives

Re: Is a /48 still the smallest thing you can route independently?


From: Jo Rhett <jrhett () netconsonance com>
Date: Thu, 11 Oct 2012 14:31:13 -0700

First:
But likely if you are in that camp, just asking for address space,
that you can use stably for a long time, from your network provider who
provides you connectivity is a better way to go.

Um, sorry I figured by the fact that I was posting on Nanog the context was clear, but I've forgotten how Nanog is now 
a go-to source for home network too :(  The context was for what Nanog was originally intended for: We are 
provider-independent and peering around the world.

On Oct 11, 2012, at 2:17 PM, Jeroen Massar wrote:
A /64 is for a single link …(snip)... A /48 (or /56 for end-users for some of the RIRs) is for a single end-site

Sorry, I wasn't looking for the breakdown of expected usage. I know those maps. What I was asking was whether you can 
PI-route a /56 or anything less than a /48 today.  It's "nice" to have a few dozen of the entire Internet for each 
site, but totally unnecessary.

If you thus have 5 end-sites, you should have room for 5 /48s and thus a
/47 is what you can justify.

Really? One bit can flip that many ways? ;-)  I assume you mean /45, and apparently ARIN's recommended size is /44 
anyway.

-- 
Jo Rhett
Net Consonance : net philanthropy to improve open source and internet projects.




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