![]() ![]() It adds a little overhead, but it doesn't break the multicast operation. As a multicast client decapsulates its received multicast packet, it will see the destination IP address, and will simply discard it if it does not belong to this multicast group. Multicast IPv4 Address to MAC Address Converter is a small utility to convert a multicast IP address to the MAC address. This mapping of a larger address space to a smaller address space means that multiple multicast IP addresses may be mapped to the same multicast MAC address. If this does take place, multicast will still function correctly. Multicast IPv4 Address to MAC Address Converter n Intro n. This mapping of a larger address space to a smaller address space means that multiple multicast IP addresses may be mapped to the same multicast MAC address.īy using only specific multicast addresses, engineers can steer clear of multicast addresses that may map to the same MAC address.Įven if an engineer is unaware, it is unlikely that you will have multiple multicast IP addresses mapping to a single MAC address. Here’s how to figure out what MAC address your IP address maps to: We convert your IP address to binary: decimal: 239.192.0.1 binary: 11101111 11000000 00000000 00000001. ![]() All multicast IPv4 addresses begin with 1110 in binary leaving 28 bits to define any unique multicast address in IPv4.Īll multicast MAC addresses begin with 01:00:5E and have the very next bit set to 0, leaving 23 bits to define any unique multicast MAC addresses.ĭuring encapsulation of a multicast packet, a specific mapping algorithm is used to map the 28-bit multicast IPv4 addresses to the 23 bit multicast MAC addresses.
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