Can VS be supported if only one stack member CE12800 switch has loaded the license

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If only one member switch has a license file loaded after a CE12800 CSS is set up and the license file supports VS, the entire CSS supports VS.

Other related questions:
Can a stack be set up using only one 40GE port on a member CE switch
A stack can be set up using only one 40GE port on a member CE switch. To ensure reliability, it is recommended that a stack be set up using two or more ports.

In which versions can VS be configured on the CE12800 and is a license required
CE12800 series switches support VS in V100R002C00 and later versions, and each CE12800 can have a maximum of 16 VSs (including the admin-VS) configured. The VS function is under license control.

Load a license file to a stack of switches
Perform the following steps to load a license file to a stack system: 1. Apply for a license and upload the license file to the master switch of the stack system. A license is bound to the ESN of a physical device, and each stack member has an independent ESN. You can apply for a license for two switches in a stack or for each switch. 2. Run the license active file-name command in the user view to activate the uploaded license file. ? If there are multiple license files, run the license active file-name command multiple times and specify different file names each time. The system will then find the matching ESNs to activate the license files. ? If there is only one license file, run the license active file-name command only once. 3. Run the display license command to check whether the license file has been successfully loaded. If you load the licenses on multiple switches and then set up a stack system, the features activated for the stack are a combination of features activated for the member switches. If a license is uploaded to only one of the two switches, the license is valid for the stack system. If the stack system splits, the licenses loaded to the switches respectively take effect. In addition, the activated licensed features can still be used on the switches even if these features are not activated using the switches' own license. If the license of Switch1 supports feature A and the license of Switch2 supports feature B, the two switches support features A and B after they set up a stack. If the stack breaks, feature B on Switch1 can still run even after Switch1 restarts but new configurations cannot be added to feature B.

Load a license for a stack of CE series switches
Load a license for a stack of CE series switches as follows: 1. Apply for a license and upload the license file to the master switch of the stack system. A license is bound to the ESN of a physical device, and each stack member has an independent ESN. You can apply for a license for two switches in a stack or for each switch. 2. Run the license active file-name command in the user view to activate the uploaded license file. - If there are two license files, run the license active file-name command twice and specify two different file names. The system will then find the matching ESNs to activate the license files. - If there is only one license file, run the license active file-name command only once. 3. Run the display license command to check whether the license file has been successfully loaded. If you load the licenses on two switches and then set up a stack system, the features activated for the stack are a combination of features activated for the two member switches. If a license is uploaded to only one of the two switches, the license is valid for the stack system. If the stack system splits, the licenses loaded to the switches respectively take effect. In addition, the activated licensed features can still be used on the switches even if these features are not activated using the switches' own license.

Can only one service port be used as a stack port for CE switches
Yes. To improve reliability, you are advised to add at least two physical member ports to each stack port.

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