Displays a list of IEEE 802.1Q tags that are configured on the
    switch port connected to the specified physical LAN device.
    LANCP listens for the GVRP packets that contain the configuration
    information and displays the configured tags.

    The switch periodically sends GVRP (GARP VLAN Registration
    Protocol) (GARP = Generic Attribute Registration Protocol)
    packets to provide VLAN configuration information in compliance
    with the IEEE 802.1Q specification. If GVRP is not configured on
    the switch, or if the LAN device is not connected to a switch,
    this command displays only the list of tags that the VLAN driver
    has configured.