First 24 bits of a multicast mac address

Multicast - Convert IP to MAC address

You can only recover the last 23 bits of the IPv4 multicast address from the bit MAC multicast address. Learn more about Teams. Asked 2 years, 1 month ago. Active 2 years, 1 month ago. Viewed 1k times.

Andriy Berestovskyy Andriy Berestovskyy 5, 2 2 gold badges 8 8 silver badges 26 26 bronze badges. For example, a host that listens to the If someone else is streaming to the Now the big question remains…what multicast IP addresses map to which multicast MAC address and how do we calculate this? We will take the following multicast MAC address and calculate what 32 multicast IP addresses map to it:. Above you can see how I translated the hexadecimal address into binary, this is the full MAC address:. The digits in blue are the class D IP address in binary in decimal. You can not post a blank message.


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Please type your message and try again. Since all Layer 3 IP multicast addresses have the first 4 of the 32 bits set to 0x, this leaves 28 bits of meaningful IP multicast address information.

Multicast Address - an overview | ScienceDirect Topics

These 28 bits must map into only 23 bits of the available MAC address. This mapping is shown graphically in Figure Just 23 Bits? This content has been marked as final. Show 3 replies. This is old news. Here is a video on the conversion.

Multicast Addressing

Archived from the original on IPv6 Essentials Second ed. Internet Assigned Numbers Authority. Karl Auerbach. Categories : Network addressing. Hidden categories: CS1 maint: Multiple names: authors list Pages using RFC magic links Articles with short description All articles with unsourced statements Articles with unsourced statements from January Namespaces Article Talk.

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Views Read Edit View history. Languages Add links. By using this site, you agree to the Terms of Use and Privacy Policy. Local subnetwork [1]. AD-HOC block 1 [2].

AD-HOC block 2 [3]. Source-specific multicast [1].

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GLOP addressing [4]. AD-HOC block 3 [5].


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