Channel spacing of 200G line rates

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For 10G, 40G, and 100G line rates, the channel spacing is 50 GHz for an 80-wavelength system and is 100 GHz for a 40-wavelength system. For 200G signals, the flexible grid technology can be used. When the technology is used, the channel spacing is not fixed and can be set. For example, the channel spacing of 200G signals can be set to 37.5 GHz.

Other related questions:
Channel spacing of 200G signals
For 10G, 40G, and 100G signals, the channel spacing is 50 GHz for an 80-wavelength system and 100 GHz for a 40-wavelength system. For 200G signals, the flexible grid technology can be used. When the technology is used, wavelength bandwidth is variable. For example, if different modulation methods are used for 200G signals, the required bandwidth is different. For example, it can be 75 GHz or 150 GHz.Flexible ROADM adjusts bandwidth based on signals and grooms the signals to specified directions according to the network configurations.

Wavelength spacing for 200G signals
For 10 Gbit/s, 40 Gbit/s, and 100 Gbit/s signals, the wavelength spacing is 50 GHz for an 80-wavelength system and 100 GHz for a 40-wavelength system. For 200 Gbit/s signals, the flexible grid technology can be used. When the technology is used, wavelength bandwidth is flexible, instead of being fixed at 50 GHz or 100 GHz. For example, if different modulation methods are used for 200 Gbit/s signals, different required bandwidth is required. (For example, it can be 75 GHz or 150 GHz). Flexible ROADM adjusts bandwidth based on signals and grooms the signals to specified directions according to the network configurations.

Line rate forwarding of S series switches
Line rate forwarding indicates that no packet is lost when the maximum rate of an interface is reached. Total bandwidth provided by all interfaces of a switch = Number of interfaces x Interface rate x 2 (full-duplex mode) If the total bandwidth is less than or equal to the backplane bandwidth, data is forwarded at line rate on the backplane.

What will happen if the E1 line and IP line participants with different bandwidths join a conference at the same time?
The impacts are as follows: - If the bandwidth, format, or protocol of each participant is inconsistent, rate adaptation resources of the MCU will be occupied. Under this situation, the rate adaptation function must be enabled when conferences are scheduled on the RM; otherwise, conferences cannot be held. When rate adaptation resources are sufficient, conferences can be properly held. If rate adaptation resources are insufficient, the system displays a message indicating that conferences cannot be held because of insufficient rate adaptation resources. - Generally, it is recommended that you set the same format, protocol, and rate for all participants on the RM to save rate adaptation resources. The rate of an E1 line participant is 1920 kbit/s.

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