[ipv6-wg] IPv6 on P2P links
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Pierre-Yves Maunier
pymaunier at neotelecoms.com
Thu May 26 10:31:18 CEST 2011
On Thu, May 26, 2011 at 10:07:39AM +0200, Jasper Jans wrote: > Can anyone give me some real world experience with IPv6 numbering on P2P links in their network? > > I've seen the recommendations swing from '/64' to '/127 if your equipment can handle it' and even > to 'do not assign anything at all just use link-local' and access your devices over the loopback > which your IGP will distribute. > > The last option seems interesting to me from a IP assignment point of few. It safes me having > to allocate a block for this part of the infrastructure. I'm just wondering if in the long run > it will not make life harder. > > Jasper > Hello, on our side we use /126 for P2P links. I've heard some others using /64 or /127. Some allocate a /64 but configure a /126 to always have :1 and :2 in order to avoid mistakes by calculating the good hosts ip addresses. Here is my point of view on how we can subnet an IPv6 subnet : http://www.as8218.eu/frnog-ipv6-subnetting.pdf It's not intended to be a best practice but this is how I've done on AS8218 network (the example1 in the pdf from page 11 to 22). Have a look at page 17-18. Regards, -- Pierre-Yves Maunier AS8218 IP/Project Engineer tel +33 1 49 97 07 45 mob +33 6 30 92 18 36 fax +33 1 49 97 07 30 pymaunier at neotelecoms.com Neotelecoms 21 rue La Boétie, 75008 Paris, France
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