Nodes can change its color during animation. Link Links are created between nodes to form a network topology. Internally nam links are consist of 2 simplex links. The trace event 'l' creates two simplex links and does other necessary setup. Therefore, for a users perspective all links are duplex links.
Links can change color during the animation.
Queue Queues need to be constructed in nam between two nodes. A nam queue is associated to only one edge of a duplex link. Queues are visualized as stacked packets. Packets are stacked along a line, the angle between the line and the horizontal line can be specified in the queue trace event. Packet Packets are visualized as a block with an arrow.