Dynamic hitless resizing in optical transport networks

摘要

The invention relates to techniques for contro lling a dynamic hitless resizing in data transport networks. According to a method aspect of the invention, a network connection comprises M tributary slots d efined in a payload area of a higher order transport scheme of the data transport network and the method comprises the steps of rec eiving a connection re size control si gnal at each of the nodes along the path of the network connection; ad ding at each node along the path in response to the connection resize control signal a second set of N tributary slots to the first set of the M tributary slots, such that the network connection comprises M+N tributary slots; and increasing, after M+N tributary slots are av ailable for the network connection at each node along the path, a transport data rate of the network connection.