def is_lag(local_link_information):
    """Judge a specified port param is for LAG(linkaggregation) or not.

    :param local_link_information: physical connectivity information
    :type local_link_information: list of dict
    :returns: True(mode is LAG) or False(otherwise)
    :rtype: boolean
    """
    return len(local_link_information) > 1
