What is the command to enable a Link Aggregation interface 99 in Aruba OS-CX?

The command to enable a Link Aggregation interface in Aruba OS-CX is to specify the interface type and its identifier correctly. The command "interface LAG 99" specifically tells the switch to configure a Link Aggregation Group (LAG) interface with the identifier 99. In Aruba OS-CX, the designation of "interface" followed by the type and the number is the standard syntax used to access the configuration mode for that specific interface type.

By using this command, you enter the configuration mode for the LAG interface, where you can then configure various settings pertinent to that LAG, such as adding physical interfaces, setting load balancing options, or configuring link parameters. This command reflects the structure that separates interface types (like LAG, Ethernet, VLAN, etc.) in the Aruba OS-CX command-line interface, making it a precise and effective way to start configuring a LAG interface.

The other commands do not follow the correct syntax used in Aruba OS-CX for accessing an interface configuration. They either mislabel the interface command or use incorrect terminology, which would not lead to entering the desired configuration mode for setting up a Link Aggregation interface.