[c-nsp] 10GBase-T (was: new 8-port 10 G bade)

[Asbjorn Hojmark - Lists]

> Well - LX4 is nice, but X2 form factor has serious limitations
> for power dissipation (4 Watts) compared to XENPAK (10 Watts).

The X2 MSA defines three different power classes, where up-to-4W
is Class I, but there's also a Class II (5W) and Class III (>5W).

> The current ZR and DWDM XENPAKs are somewhere around 9 Watts,
> which is nowhere near X2 possibilities. As we require those
> type of transceivers, X2 is definitely a showstopper

Fujitsu is developing a -ZR X2:
http://www.fujitsu.com/global/services/telecom/optcompo/lineup/x2msa/

And Cisco is merely saying that such an X2 is not available
*today*: http://tinyurl.com/94o87

So I guess it might happen.

-A