[c-nsp] 10GE sanity check

[Lincoln Dale]

hi Mikael,

Mikael Abrahamsson wrote:
> So if one wants to do ~20 km and LX doesn't work, one can usually do ZX at 
> only one end, as 1550nm light only has half the attenuation of 1310nm 
> light, which means more of the light get to the receiver for it to be 
> enough with the ~ -18dB sensitivty of LX, you don't really need the ~24dB 
> of ZX. The -24dB receiver on the ZX can be sensitive enough to receive the 
> LX on the other end correctly.
>   

are you operating any links like this in production today with real traffic?

i'd love to see what (if any) CRC/Framing errors you may be recording, 
some people think that running equipment in this manner significantly 
compromizes the bit-error-rate of the link.
i don't have evidence either way, but "show int x/y" counters would be a 
great proof point of it not being an issue.


cheers,

lincoln.