IPv6: numbering of point-to-point-links

Ronald Bonica rbonica at juniper.net
Mon Jan 24 13:29:26 UTC 2011


Lasse,

draft-ietf-6man-prefixlen-p2p-01 provides some insights.

                                  Ron

> -----Original Message-----
> From: Lasse Jarlskov [mailto:laja at telenor.dk]
> Sent: Monday, January 24, 2011 7:49 AM
> To: nanog at nanog.org
> Subject: IPv6: numbering of point-to-point-links
> 
> Hi all.
> 
> 
> 
> While reading up on IPv6, I've seen numerous places that subnets are
> now
> all /64.
> 
> I have even read that subnets defined as /127 are considered harmful.
> 
> 
> 
> However while implementing IPv6 in our network, I've encountered
> several
> of our peering partners using /127 or /126 for point-to-point links.
> 
> 
> 
> What is the Best Current Practice for this - if there is any?
> 
> Would you recommend me to use /64, /126 or /127?
> 
> What are the pros and cons?
> 
> 
> 
> 
> 
> --
> 
> Best regards,
> 
> Lasse Jarlskov
> 
> Systems architect - IP
> 
> Telenor DK





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