cisco ccna que es

cisco ccna que es.. Non-designated ports (NDPs) are all other ports on the switch that are neither RPs nor DPs. The naming of switch port roles varies among the various standards that define STP. these STP standards also define a number of other switch port roles.Go back and look at the topology in Figure 1-26, but this time it requires a change in the way you look at it. In the network of Figure 1.26network, 3 network segments can be established. All ports on the root switch SW1 are DPs, because those twoports on SW1 are DPs, because those two ports are on the shortest path to the root switch on segments 1 and 2. Which port is the DP in segment 3?What is the DP in segment 3? Port G0/3 on SW2 will be DP because it has an overhead value of 4 to the root switch, and port G0/2 on SW3 will be DP because it has an overhead value of 4 to the root switch.port G0/2 to the root switch has an overhead value of 5O RP is a little easier to determine. On each non-root switch, the closest port to the root switch isis RPO For this example, port G0/1 on SW2 and G0/1 on SW3 will be RP, and all the rest of the switchAll the rest of the switch ports are NDP.The port state is related to the specific actions that can be taken on the switch ports in that state. As with port roles, the naming of port states also varies with the protocol type of the STP. Several common port states are shown below.. Blocking state: A switch port in this state stops receiving all frames except for Layer 2 management frames (for example, BPDU frames).