[j-nsp] IPv6 subnetting

Mark Kamichoff prox at prolixium.com
Sat Feb 2 14:42:52 EST 2008


On Fri, Feb 01, 2008 at 01:32:49PM +0700, a. r.isnaini. rangkayo sutan wrote:
> Yes, you cannot assign 10::14/126 which 4 I believe is network ID for
> /126  (/30 in ipv4), before 10::14/126 there should 10::/126.

The first address in any IPv6 subnet is reserved for subnet-router
anycast.  Section 2.6.1 of RFC 2373 defines this.

This also includes the first address of /127's.  Reading RFC 3627 (Use
of /127 Prefix Length Between Routers Considered Harmful) is probably
worthwhile.

- Mark

-- 
Mark Kamichoff
prox at prolixium.com
http://prolixium.com/
Rensselaer Polytechnic Institute, Class of 2004
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: Digital signature
Url : https://puck.nether.net/pipermail/juniper-nsp/attachments/20080202/b34b3e16/attachment.bin 


More information about the juniper-nsp mailing list