What does the multicast address 224.0.0.10 correspond to in IPv4?

The multicast address 224.0.0.10 is specifically used for EIGRP (Enhanced Interior Gateway Routing Protocol) communication. EIGRP uses this address to send routing updates to all EIGRP routers on the local network segment. This address is important for the efficient distribution of routing information among all participants in the EIGRP process, allowing routers to share updates without the need for each one to communicate directly with each other.

This multicast address is not used for OSPF, RIP, or broadcasting to all hosts, which operate on different multicast addresses or utilize different protocols altogether. OSPF, for example, uses the multicast address 224.0.0.5 for all OSPF routers and 224.0.0.6 for designated routers. Thus, understanding the specific multicast address associated with a protocol helps to discern the intended communication pathways within a network.