Supports Multicast and  Broadcast
===================================

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        **What does it mean that UDP supports Multicast and Broadcast?**

        UDP can send packets to multiple recipients at once using **multicast** (one-to-many) or **broadcast** (one-to-all on a local network) addressing without needing multiple connections.

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        **Why is Multicast and Broadcast support useful in UDP?**

        It reduces bandwidth usage by allowing a single UDP message to be delivered to multiple recipients, making it efficient for services like video streaming, service discovery, or sensor networks.

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        **How does UDP support Multicast and Broadcast?**

        UDP uses special IP addresses: **Multicast (224.0.0.0 – 239.255.255.255)** and **Broadcast (255.255.255.255 or subnet-specific)**. The OS and network interface then handle the group delivery.

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        **Where is UDP Multicast and Broadcast used?**

        It's used in protocols like **mDNS**, **DHCP**, **RIP**, **VoIP**, **video conferencing**, and **online multiplayer games** for efficient one-to-many communication.

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        **Which OSI layer does Multicast/Broadcast support belong to?**

        Multicast and broadcast addressing work at the **Network Layer (Layer 3)**, while UDP (at the **Transport Layer**) utilizes them to deliver data to multiple recipients.

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        **Is Multicast/Broadcast support Windows specific?**

        No, UDP multicast and broadcast are supported across all major platforms, including Windows, as part of standard IP and UDP behavior.

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        **Is Multicast/Broadcast support Linux specific?**

        No, Linux fully supports UDP multicast and broadcast through the networking stack and socket options (`SO_BROADCAST`, `IP_ADD_MEMBERSHIP`, etc.).

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        **Which Transport Protocol supports Multicast and Broadcast?**

        **UDP** is the primary transport protocol used for multicast and broadcast because it is connectionless and has low overhead.

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        **Is Multicast/Broadcast used in client-server model?**

        Not typically. Client-server models are usually unicast. However, multicast/broadcast is common in **service discovery**, **gaming**, and **sensor networks** where one source communicates with many clients.

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        Topics in this section,

                * :ref:`Learnings in this section <Supports_Multicast_Broadcast_step1>`

                * :ref:`Terminology <Supports_Multicast_Broadcast_step2>`

                * :ref:`Version Info <Supports_Multicast_Broadcast_step3>`

                * :ref:`Supports Multicast And Broadcast Basic Setup on Ubuntu using IPv4 <Supports_Multicast_Broadcast_step18>`

                * :ref:`UDP Feature : Supports Multicast And Broadcast <Supports_Multicast_Broadcast_step4>`
                
                * :ref:`Reference links <Supports_Multicast_Broadcast_step17>`

.. _Supports_Multicast_Broadcast_step1:

.. tab-set::

    .. tab-item:: Learnings in this section

        * In this section, you are going to learn

.. _Supports_Multicast_Broadcast_step2:

.. tab-set::

    .. tab-item:: Terminology
        
       * Terminology


.. _Supports_Multicast_Broadcast_step3:

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    .. tab-item:: Version Info
    
         * Version Info


.. _Supports_Multicast_Broadcast_step18:

.. tab-set::

   .. tab-item:: Supports Multicast And Broadcast Basic Setup on Ubuntu using IPv4
       
      * setup

.. _Supports_Multicast_Broadcast_step4:

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    .. tab-item:: UDP Feature : Supports Multicast And Broadcast
   
          **Supports Multicast And Broadcast - Testcases**

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.. _Supports_Multicast_Broadcast_step17:

.. tab-set::

    .. tab-item:: Reference links
     
       * Reference links