Last Updated on July 31, 2021 by Admin
Which of the following commands need to be configured on a RIPng router prior to enabling this routing protocol?
- ipv6 rip enable
- ipv6 multicast-routing
- ipv6 unicast-routing
- ipv6 router rip
The ipv6 unicast-routing command should be used before enabling RIPng on a router. This command should be executed in global configuration mode of the router. IPv6 can then be enabled by using the ipv6 enable command on any of the interfaces of the router. The ipv6 unicast-routing command allows you to forward IPv6 unicast datagrams.
Routing Information Protocol Next Generation (RIPng) allows routers to learn about routes in an autonomous system. RIPng is an extension of the RIPv2 protocol to provide support IPv6 for future adherence.
The similarities between RIPv2 and RIPng are as follows:
Both protocols use User Datagram Protocol (UDP).
Both use distance vector algorithm to find the best route.
Both of them measure the metric in terms of hops.
Both have the same maximum hop count of 15 for valid routes.The differences between RIPv2 and RIPng are as follows:
RIPv2 learns IPv4 routes, whereas RIPng learns IPv6 routes
RIPv2 supports automatic summarization as IPv4 defines classful addresses, whereas RIPng does not support automatic summarization
RIPv2 uses UDP port 520, whereas RIPng supports port 521
RIPv2 requires authentication for RIP packets, whereas RIPng does not require RIP-specific authentication as IPv6 has an in-built IPsec authenticationThe ipv6 rip enable command should not be used because this command allows you to enable IPv6 RIP routing process on the interfaces of a router.You should not use the ipv6 multicast-routing command prior to enabling IPv6 on the router. This command is used after IPv6 is enabled on one or more interfaces of the router to allow multicast forwarding using Protocol Independent Multicast (PIM) and Multicast Listener Discovery (MLD) on all the IPv6-enabled interfaces.The ipv6 router rip command should not be used prior to enabling IPv6 because it allows you to enter the RIP for IPv6 router mode.
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