[135359] in North American Network Operators' Group

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IPv6: numbering of point-to-point-links

daemon@ATHENA.MIT.EDU (Lasse Jarlskov)
Mon Jan 24 07:49:11 2011

Date: Mon, 24 Jan 2011 13:48:57 +0100
From: Lasse Jarlskov <laja@telenor.dk>
To: <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

Hi all.

=20

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.

=20

However while implementing IPv6 in our network, I've encountered several
of our peering partners using /127 or /126 for point-to-point links.

=20

What is the Best Current Practice for this - if there is any?

Would you recommend me to use /64, /126 or /127?=20

What are the pros and cons?

=20

=20

--=20

Best regards,

Lasse Jarlskov

Systems architect - IP

Telenor DK


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