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Dell Configuration Guide for the S4048–ON System 9.14.2.6

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Important Points to Remember

  • LACP allows you to add members to a port channel (LAG) as long as it has no static members. Conversely, if the LAG already contains a statically defined member (the channel-member command), the port-channel mode command is not permitted.
  • A static LAG cannot be created if a dynamic LAG using the selected number exists.
  • No dual membership in static and dynamic LAGs:
    • If a physical interface is a part of a static LAG, the port-channel-protocol lacp command is rejected on that interface.
    • If a physical interface is a part of a dynamic LAG, it cannot be added as a member of a static LAG. The channel-member tengigabitethernet command is rejected in the static LAG interface for that physical interface.
  • A dynamic LAG can be created with any type of configuration.
  • There is a difference between the shutdown and no interface port-channel commands:
    • The shutdown command on LAG “xyz” disables the LAG and retains the user commands. However, the system does not allow the channel number “xyz” to be statically created.
    • The no interface port-channel channel-number command deletes the specified LAG, including a dynamically created LAG. This command removes all LACP-specific commands on the member interfaces. The interfaces are restored to a state that is ready to be configured.
      NOTE There is no configuration on the interface because that condition is required for an interface to be part of a LAG.
  • You can configure link dampening on individual members of a LAG.

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