What is the special value assigned to the first 24 bits of a multicast MAC address transporting an IPv4 packet?

Last Updated: Mar 25, 2025
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What is the special value assigned to the first 24 bits of a multicast MAC address transporting an IPv4 packet?

  • 01-5E-00
  • FF-00-5E
  • FF-FF-FF
  • 01-00-5E

Explanation: Just as with multicast IP addresses, there is a special assigned value for multicast MAC addresses. The first 24 bits are set in hex to: 01-00-5E. The remaining 6 hex digits are derived from the lower 23 bits of the IP multicast.

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