Cause why the rate of GE services is 1.25 Gbit/s but not 1000 Mbit/s as specified in standards

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When a board that has GE optical ports receives GE services, the port rate is 1.25 Gbit/s. The rate, however, needs to be converted using the 8B/10B encoding scheme. The rate will become 1000 Mbit/s after the conversion is complete.

Other related questions:
Cause why the rate of FE services is 125 Mbit/s but not 100 Mbit/s as specified in standards
When a board that has FE optical ports receives FE services, the port rate is 125 Mbit/s. The rate, however, needs to be converted using the 4B/5B encoding scheme. The rate will become 100 Mbit/s after the conversion is complete.

Limitations when the rate of the client-side services on the LDM board is higher than 1.25 Gbit/s
For client-side services whose rates are higher than 1.25 Gbit/s, such as OC-48, STM-16, OTU1, FC200, and FICON Express, the LDM board supports only one channel of signals, and the port must be RX1/TX1.

Restrictions on the LDM board to receive client services whose rate is greater than 1.25 Gbit/s
The LDM board can receive only one channel of service signals from the RX1/TX1 port at a rate greater than 1.25 Gbit/s, such as the OC-48, STM-16, OTU1, FC200, and FICON Express on the client side.

Service rate limit for GE services on the TOM board
The TOM board does not support port bandwidth limit. All OTN boards do not support this function. The function is supported only by the service boards that support the L2 processing capability, such as TEM28 and LEM24.

Boards that support 8 Gbit/s SAN services
The TQX, TDX, and LOA boards support 8 Gbit/s SAN services.

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