This topic describes gridless OCM support for flexible channel widths, PSD-based amplifier gain calculation, channel-width limitations, and command examples for supported widths.
The Gridless OCM (Optical Channel Monitor) support feature enables transponders to use channel widths between 50 GHz and 100 GHz. In R7.1.1, the channel width can be set between 50 GHz to 800 GHz in increments of 25 GHz. In the gridless mode, the amplifier gain is calculated using the power spectral density parameter and not the per channel power parameter. The flex grid enables support for the 600G interface on NCS 1004
Limitation
The setting of a channel width disables the nearest channels.
Configure the channel width
The channel width can be set from 1000 GHz to 8000 GHz.
This command configures the channel width as 100 GHz. This means that the channels are spaced on eight slices at 12.5 GHz each.
hw-module location 0/RP0/CPU0 slot 1 ampli flex-mode
channel-id 1 channel-width 1000This command configures the channel width as 800 GHz. This means that the channels are spaced on eight slices at 100 GHz each.
hw-module location 0/RP0/CPU0 slot 1 ampli flex-mode
channel-id 10 channel-width 8000