[c-nsp] ASR9k CWDM Optics

[Mikael Abrahamsson]

On Sun, 16 Oct 2011, sthaug at nethelp.no wrote:

> Menara tunable XFPs (http://www.menaranet.com/products_tunable_xfp.htm) 
> work quite well in Juniper MX routers, and they have FEC integrated on 
> the XFP. We did a test this summer on a 500 km (approx) DWDM system with 
> optical amplifiers only, no electronic regeneration, and are very happy 
> with the results. Wavelength configured by CLI. Rerouting based on BER 
> is *not* integrated with JunOS, though.

I'm sceptical it ever will be as good as when the framer is integrated 
into the router. You need to read the FEC values basically as DOM, 
question is if you can do this often enough to get preFEC BER based 
re-routes in time.

They're very nice for platforms which do not have integrated FEC though.

-- 
Mikael Abrahamsson    email: swmike at swm.pp.se