200-301 ccna reddit

200-301 ccna reddit.62 Chapter 3 Troubleshooting LAN Switching Troubleshooting Step 3b focuses on the disabled for error (err-disabled) state. This state indicates that the interface has been configured to use port security, and when a violation occurs, the interface does not allow any traffic to pass through at that time. This interface state is actually using the shutdown violation mode, as this mode is the only one of the 3 modes that can cause the interface to be disabled. To resolve the fault, you must first shut down the interface with the shutdown command, and then re-enable the interface with the no shutdown command. Example 3-4 is an example of an interface in the disabled (err-disabled) state due to an error. Example 3-4 Using Port Security to Define the Correct MAC Address for a Specific Interface ! The first command lists all interfaceson which port security has been enabled, ! and the violation mode, under the heading "SecurityAction". SW1# show port-security Secure Port MaxSecureAddr CurrentAddr Securityviolation Security ActionFaO/131 Shutdown (Count) (Count) (Count)TotalAddressesin System(excluding onemacperport) :0 MaxAddresses limit in System(excluding one mac per port) : 8192! The next command shows the err-disabled state, implying a security violation.Port Name Status err-disabled 1Vian Duplex Speed Type FaO/13 auto auto 10/100BaseTXSW1# show interfaces FaO/13 status ! The next command# soutput has shading for several of the most important facts. sw1# show port-security interface FaO/13Port Security Port Status Violation Mode Aging Time Aging Type SecureStatic Address Aging Maximum MAC Addresses Total MAC Addresses Configured MAC Addresses Sticky MAC Addresses Enabled Secure-shutdown Shutdown 0 mins Absolute Disabled 1 1 1 1 0Last Source Address:Vian 0200.3333.3333:2Security Violation Count : 1