Checksum for Error Detection
=============================

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        **What is UDP Checksum for Error Detection?**

        The UDP checksum is a field in the UDP header used to detect errors in the transmitted segment, including data and parts of the IP header.

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        **Why is UDP Checksum useful for Error Detection?**

        It helps ensure the integrity of transmitted data by allowing the receiver to detect if the data was corrupted in transit.

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        **How does UDP Checksum work for Error Detection?**

        The sender calculates a checksum over the UDP header, data, and a pseudo-header. The receiver recalculates it and compares it to the original. If there’s a mismatch, the packet is discarded.

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        **Where is UDP Checksum used?**

        It is used in all standard UDP communications, especially in systems where basic error detection is needed but full reliability (like TCP) is not required.

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        **Which OSI layer does UDP Checksum belong to?**

        The UDP checksum operates at the **Transport Layer (Layer 4)** of the OSI model.

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        **Is UDP Checksum Windows specific?**

        No, UDP checksum functionality is implemented across all operating systems, including Windows.

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        **Is UDP Checksum Linux specific?**

        No, Linux fully supports UDP checksum as part of its standard networking stack, in compliance with the UDP protocol specification.

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        **Which Transport Protocol uses Checksum for Error Detection?**

        **UDP (User Datagram Protocol)** includes a checksum for basic error detection in data transmission.

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        **Is UDP Checksum using client-server model?**

        Yes, UDP checksum is part of the protocol used in client-server communications, ensuring basic integrity of messages exchanged.

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        Topics in this section,

                * :ref:`Learnings in this section <Checksum_step1>`

                * :ref:`Terminology <Checksum_step2>`

                * :ref:`Version Info <Checksum_step3>`

                * :ref:`Checksum For Error Detection Basic Setup on Ubuntu using IPv4 <Checksum_step18>`

                * :ref:`UDP Feature : Checksum For Error Detection <Checksum_step4>`
                
                * :ref:`Reference links <Checksum_step17>`

.. _Checksum_step1:

.. tab-set::

    .. tab-item:: Learnings in this section

        * In this section, you are going to learn

.. _Checksum_step2:

.. tab-set::

    .. tab-item:: Terminology
        
       * Terminology


.. _Checksum_step3:

.. tab-set::

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


.. _Checksum_step18:

.. tab-set::

   .. tab-item:: Checksum For Error Detection Basic Setup on Ubuntu using IPv4
       
      * setup

.. _Checksum_step4:

.. tab-set::

    .. tab-item:: UDP Feature : Checksum For Error Detection

         **Checksum For Error Detection - Testcases**

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                  :file: ./UDP_Feature6_Checksum_for_error_detection_Test_Cases.csv
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.. _Checksum_step17:

.. tab-set::

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