Functions of ports on CSS subcards

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CSS subcards provide 10GBASE-X SFP+ optical ports for sending and receiving service packets as well as providing CSS services.
You can refer to the following documents for the detailed CSS connection rules:
For the hardware description of the S9300 and S9300E, see S9300&S9300E Hardware Description.
For the hardware description of the S7700, see S7700 Hardware Description.
For the hardware description of the S9700, see S9700 Hardware Description.
For the hardware description of the S12700, see S12700 Hardware Description.

Other related questions:
Can ports on CSS subcards be used as service ports
Ports on CSS subcards can only be used to provide cluster services and cannot be used as service ports.

How to restore a CSS port to a service port for the CSS composed of S series modular switches
Perform either of the following operations: 1. In non-CSS scenarios, to restore a physical member port to a service port on a standalone switch, run the undo interface css-port command in the system view. 2. In CSS scenarios, to restore a physical member port to a service port in a CSS, run the shutdown interface ** command in the logical CSS port view (run the interface css-port port-id command to enter the view) to shut down the physical member port and then run the undo port interface ** enable command.

Do subcards of the S5700SI and S5700EI support 10GE ports
The S5700SI and S5700EI switches use front subcards to provide 10GE ports. The ES5D000X2S00 and ES5D000X4S01 front subcards provide 10GE ports on the S5700SI and S5700EI switches. They use SFP+ optical modules. The S5700SI and S5700EI switches support the ES5D000X2S00 and ES5D000X4S01 front subcards since V100R005. An ES5D000X2S00 front subcard can be used without a rear subcard or together with a rear subcard supported by the switches. When an ES5D000X4S01 front subcard is used together with an ES5D00ETPB00 extended rear subcard of which the PCB version is VER.C, all the four ports on the ES5D000X4S01 front subcard can be used. If an ES5D000X4S01 front subcard is used without an ES5D00ETPB00 extended rear subcard or used together with a stack rear subcard, only the first and third ports on the front subcard can be used. The two ports are displayed as XGigabitEthernet */1/1 and XGigabitEthernet */1/2 in command lines. NOTE: * indicates the slot ID of the switch.

Whether the CSS ID of a port can be canceled after S series modular switches establish a CSS
After S series modular switches establish a CSS, interfaces are numbered in the format of CSS ID/slot ID/subcard ID/port. The CSS ID cannot be deleted or cancelled. To delete the CSS ID, you must disable the CSS function.

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