Last Updated on July 31, 2021 by Admin 1
You have enabled RIPng on one of the interfaces of a router with the basic configuration. You have assigned an address to that interface using the ipv6 address command.
Which of the following statements should appear in the output of the show running-config command executed on the router? (Choose all that apply.)
- ipv6 unicast-routing
- ipv6 enable
- ipv6 rip enable
- ipv6 router rip
- ipv6 unnumbered
- ipv6 prefix-list
The ipv6 unicast-routing and ipv6 rip enable statements should appear in the output of the show running-config command.The ipv6 unicast-routing command is one of the basic IPv6 commands that needs to be executed on any router for IPv6 processing. This command is executed in the global configuration mode to allow IPv6 packet forwarding on the router. When it has been executed the ipv6 unicast-routing statement will appear in the output of the show run command.The ipv6 rip enable command allows you to enable RIPng on a router interface. You should execute this command to create a RIPng routing process. When it has been executed the ipv6 rip enable statement will appear in the output of the show run command.The ipv6 router rip command allows you to work with RIPng routing process by entering the router configuration mode for RIPng. It will only appear if modifications have been made to the RIPng routing process, which is not mentioned in this case.The commands to configure a router with RIPng is as follows:
rtrA(config)# ipv6 unicast-routing rtrA(config)# interface Fa0/1 rtrA(config-if)# ipv6 rip rip process enable rtrA(config-if)# ipv6 address 2001:1:1:1::1/64
Important note: in the command set above, the command that enables the RIP process on interface Fa0/1 is executed before the command assigning the IPv6 address. The order of execution of those two commands does not matter. However, if a configuration file is copied and pasted into a router, then the order in which the statements appear does matter.
For example, if the partial configuration below were pasted into a router, the IPv6 RIP process 56 would not be enabled on Fa0/0:
ip unicast routing
ipv6 rip 56 enable
ipv6 address 2001:1:1:1::1/64
The system would reject the ipv6 rip 56 enable command because an IPv6 address is not yet present. If the commands were reversed in the file, the system would accept the ipv6 rip 56 enable command.
In the scenario, the ipv6 enable command does not appear in the show running-config output. This command enables IPv6 routing on a router interface that has not been assigned an IPv6 address. In this case, an IPv6 address is explicitly assigned to the router interface by using the ipv6 address command. Therefore, the ipv6 enable command is not required.
The ipv6 unnumbered interface type command does not appear in the show running-config output. This command will allow you to enable IPv6 without assigning an IPv6 address to a router interface.
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