RE: constant FEC errors juniper mpc10e 400g

[Vasilenko Eduard via NANOG <nanog () nanog org>]

Assume that some carrier has 10k FBB subscribers in a particular municipality (without any hope of considerably 
increasing this number).
2Mbps is the current average per household in the busy hour, pretty uniform worldwide.
You could multiply it by 8/7 if you like to add wireless -> not much would change.
2*2*10GE (2*10GE on the ring in every direction) is 2 times than needed to carry 10k subscribers.
The optical ring may be less than 20 municipalities - it is very common.
Hence, the upgrade of old extremely cheap 10GE DWDM systems (for 40 lambdas) makes sense for some carriers.
It depends on the population density and the carrier market share.
10GE for the WAN side would not be dead in the next 5 years because 2Mbps per household would not grow very fast in the 
future - this logistic curve is close to a plateau.
PS: It is probably not the case for Africa where new subscribers are connected to the Internet at a fast rate.
Ed/
-----Original Message-----
From: NANOG <nanog-bounces+vasilenko.eduard=huawei.com () nanog org> On Behalf Of Tarko Tikan
Sent: Saturday, April 20, 2024 19:19
To: nanog () nanog org
Subject: Re: constant FEC errors juniper mpc10e 400g

hey,

> That said, I don't expect any subsea cables getting built in the next 
> 3 years and later will have 10G as a product on the SLTE itself... it 
> wouldn't be worth the spectrum.

10G wavelengths for new builds died about 10 years ago when coherent 100G became available, submarine or not. Putting 
10G into same system is not really feasible at all.

--
tarko