13 Oct
2009
13 Oct
'09
8:27 p.m.
Chris Adams wrote:
I guess I'm missing something; what in section 3 is this referring to? I can understand /64 or /126 (or maybe /124 if you were going to delegate reverse DNS?), but why /112 and "16 bits for node identifiers" on a point-to-point link?
The only thing special about /112 is that it is on a ":" boundary so it makes for some nice numbering plans: Let's say you set aside 2001:xxxx:0:1::/64 for /112's link 1: 2001:xxxx:0:1::1:1 2001:xxxx:0:1::1:2 link 2: 2001:xxxx:0:1::2:1 2001:xxxx:0:1::2:2 This :1, :2 arrangement seems to be common but for internal links you could make the last hextet be a unique id for the specific router. That could use more than a few bits in a large network. - Kevin