Re: is ipv6 fast, was silly Redeploying

[Owen DeLong via NANOG]

> On Nov 20, 2021, at 00:41 , Masataka Ohta <mo...@necom830.hpcl.titech.ac.jp> 
> wrote:
> 
> Speed of router depends on degree of parallelism.
> 
> So, for quick routing table lookup, if you provide 128bit TCAM
> for IPv6 in addition to 32bit TCAM for IPv4, speed is mostly
> same, though, for each entry, TCAM for IPv6 costs 4 times more
> and consumes 4 times more power than that for IPv4.
> 
> However, as global routing table size of IPv6 is a lot smaller
> than that of IPv4, the number of the entries of TCAM for IPv6
> is a lot smaller than that for IPv4. But it is so primarily
> because IPv6 is not very widely deployed.

Uh, no. It is so because on average IPv4 is so fragmented that most
providers of any size are advertising 8+ prefixes compared to a more
realistic IPv6 average of 1-3.

Owen