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https://study-ccna.com/unicast-multicast-and-broadcast-addresses/
A unicast frame will be sent to a specific device, not to a group of devices on the LAN. multicast addresses – represent a group of devices in a LAN. A frame sent to a multicast address will be forwarded to a group of devices on the LAN. broadcast addresses – represent all device on the LAN. Frames sent to a broadcast address will be delivered to all devices on the LAN.
https://community.cisco.com/t5/switching/understanding-of-unicast-multicast-and-broadcast-for-switches/td-p/1707119
yes its true switches never learn broadcast or multicast address. Switch Learn only MAC addresses,it learn mac addresses. frames work on mac address not on IP's. So broadcast and multicast is done for IP's and Layer 3 consists of IP's. at layer 2 we will see mac address.
https://www.youtube.com/watch?v=gp8dvLsDl6o
Jul 01, 2016 · Multicast address used when a packet is sent to multiple nodes belonging to multiple networks. This video will show you how to check whether a mac address is unicast, multicast or broadcast. …Author: HowTo
https://answersdrive.com/what-is-unicast-and-multicast-address-588660
A Unicast transmission/stream sends IP packets to a single recipient on a network. A Multicast transmission sends IP packets to a group of hosts on a network. Since Multicasting is a relatively new technology, some legacy devices that are part of your network might not support Multicasting.4/5(3)
https://www.utilizewindows.com/the-difference-between-unicast-multicast-and-broadcast-messages/
The remaining portion of the MAC address is a modified format of the multicast IP address. When the switch receives the frame with the multicast MAC address, it will forward the frame out all ports to all connected devices. In this case, even devices that are not members of the original IP multicast group will see the frame.
https://ipcisco.com/lesson/multicast-mac-addresses/
What is Multicast MAC Address? Multicast MAC Addresses are the MAC addresses start with 0100:5e . As you know, MAC address has 48 bits and consist of vendor code and host code. But for one MAC address, only the last 23 bits of that MAC address is used to provide Multicast MAC Address.The first 25 is fixed .
http://digitalsubstation.com/en/2013/12/01/what-is-mac-address/
The possibility of organizing data transfer for the group of devices is one of the differences between using the destination multicast MAC-address and destination broadcast (broadcast) MAC-address. In substation environment, specifically in IEC 61850 context, destination multicast MAC-address is there in GOOSE and Sampled Values messages.
https://learningnetwork.cisco.com/thread/61446
Sep 23, 2013 · yes, multicast IP address is 224.0.0.9 is equal to M-cast mac-address 01.00.5e.00.00.09 Router OSPF process builds L3 with dest. field 224.0.0.6 and appropriate Layer 2 fields. Switch accepts frame and because it is M-cast, switch sends out the frame to all ports in the same VLAN except the receiving port.
https://networklessons.com/multicast/multicast-ip-address-to-mac-address-mapping
A multicast IP address also has 32 bits but the first 4 bits are always the same (1110) because we use the 224.0.0.0 – 239.255.255.255 range. This means that each multicast IP address has 28 unique bits. Now if we want to map our 28 bit multicast IP address to our 23 bit MAC address we have a problem…we miss 5 bits of mapping information:
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