[a-nsp] 400G-ZR+ Bright

[Chris Welti]

Hi Rick,

Two weeks ago we did a short interop test with 400G ZR+ "bright" 
transceivers (Cisco/Acacia DP04QSDD-HE0) between our Cisco 8201-32FH (XR 
7.10.1) and an Arista DCS-7280CR3K-32D4-F (EOS64 4.30.2F), not sure if 
that included our whole optical line system, but definitely across a 
FOADM to check if the signal fits a the fixed filter. Worked fine and 
was uncomplicated.
We do currently have a test setup in the lab with two Cisco 8201-32FH 
routers with one DP04QSDD-HE0 each sending alien waves across our 
"normal" optical line system (ROADMs/amplifiers) and it does work as 
expected.
No services in production though yet.

One general thing that was maybe a bit surprising to us is that it takes 
about 90s for the transceivers to link up after shut/no shut or 
parameter change.

Cheers,
Chris


On 15.12.23 22:18, Richard Hicks via arista-nsp wrote:
> Is anyone running 400G ZR+ "bright" optics in their Arista gear across 
> an Optical Line system as alien waves?  Any stories you can share?
>
> We are looking to get a couple of demo boxes to validate our design 
> without transponders, but I understand the demo pool is a bit shallow 
> for 400g devices right now.
>
> Thanks,
> Rick
>
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