ccna certification voucher

ccna certification voucher.Shutdown: When a new end device is connected to the switch, if the MAC address entry of the port exceeds the maximum number or is different from the statically configured MAC address, the switch will shut down the port and immediately change to the error.disabled state, all devices under this port cannot access the switch and the switch will send a warning The switch sends a warning message and increases the count of the violation counter. When a switch port is in the error-disabled state, enter the shutdown command on the port, then the no shutdown command to turn the port back on, and if the offending end device is still connected, it continues to enter the error-disabled state. This penalty mode is the default penalty mode for switch port security. A comparison of the three switch port security penalty modes is shown in Table 7.1.Table 7.13 Comparison of Switch Interface Security Penalty ModesPenalty Mode Forward offending device traffic Issue warning Increase violation count Shut down interfaceProtect No No No No NoRestrict No Yes Yes NoShutdown No Yes Yes Yes Yes7.3 Configuring Switch SSH Management and Port Security7.3.1 Experiment 1: Configuring Switch Basic Security and SSH Management1.Experiment Purpose This experiment allows you to master: basic switch security configuration.How SSH works and the configuration of the SSH server and client. 2.Experimental Topology The switch basic security and SSH management experimental topology is shown in Figure 7-1.