Cisco Certified Network Associate (CCNA) Practice Exam

What is the command to set an OSPFv3 interface as passive?

1. (config)#ipv6 router ospf PROCESS NUMBER

2. (config-router)#passive-interface INTERFACE

3. (config-router)#end

4. All of the above are correct actions

The correct answer is: All of the above are correct actions

The command to set an OSPFv3 interface as passive is specific to the configuration mode of the router. The correct command involves entering router OSPF configuration mode and using the "passive-interface" command followed by the interface that you want to configure as passive. This means that the interface will not send or receive OSPF packets but will still participate in OSPF routing. Setting an interface as passive can be useful in reducing unnecessary OSPF traffic on interfaces that do not need to form neighbor relationships, such as point-to-point links or interfaces connecting to end-user devices. The first command, which pertains to entering OSPF configuration mode, is a necessary precursor to setting the interface as passive, as you must specify which OSPF process you are configuring. The command to end configuration is also part of the process, but it does not directly configure the interface. Understanding these commands is essential for effective OSPF configuration in IPv6 networks. The passive interface option ensures that OSPF does not send routing updates on interfaces where those updates are unnecessary, which helps optimize network performance.