Hop Limit
==============

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        **What is IPv6 Hop Limit?**

        The IPv6 Hop Limit field specifies the maximum number of hops (routers) a packet can traverse before being discarded, preventing infinite routing loops.

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        **Why is IPv6 Hop Limit useful?**

        It protects networks from routing loops by ensuring packets do not circulate endlessly, improving network stability and efficiency.

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        **How does IPv6 Hop Limit work?**

        Each router that forwards the packet decrements the Hop Limit by one. If the Hop Limit reaches zero, the packet is discarded and an ICMPv6 Time Exceeded message is sent back to the sender.

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        **Where is IPv6 Hop Limit used?**

        It is used in all IPv6 packet forwarding processes to prevent loops and facilitate network diagnostics like traceroute.

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        **Which OSI layer does IPv6 Hop Limit belong to?**

        The Hop Limit field operates at the **Network Layer (Layer 3)** as part of the IPv6 header.

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        **Is IPv6 Hop Limit Windows specific?**

        No, it is a standard IPv6 protocol feature implemented across all operating systems.

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        **Is IPv6 Hop Limit Linux specific?**

        No, Linux supports the IPv6 Hop Limit field as part of its IPv6 networking stack.

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        **Which Transport Protocol is used by IPv6 Hop Limit?**

        Hop Limit is a network-layer function and is independent of the transport protocol, applying to all IPv6 packets regardless of the upper-layer protocol.

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        **Is IPv6 Hop Limit using client-server model?**

        Hop Limit is a network-layer mechanism and is unrelated to client-server or other communication models.

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        Topics in this section,

                * :ref:`Learnings in this section <Hop_Limit_step1>`

                * :ref:`Terminology <Hop_Limit_step2>`

                * :ref:`Version Info <Hop_Limit_step3>`

                * :ref:`Header Structure Basic Setup on Ubuntu using IPv6 <Hop_Limit_step18>`
                
                * :ref:`Reference links <Hop_Limit_step17>`

.. _Hop_Limit_step1:

.. tab-set::

    .. tab-item:: Learnings in this section

        * In this section, you are going to learn

.. _Hop_Limit_step2:

.. tab-set::

    .. tab-item:: Terminology
        
       * Terminology


.. _Hop_Limit_step3:

.. tab-set::

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


.. _Hop_Limit_step18:

.. tab-set::

   .. tab-item:: Hop Limit Basic Setup on Ubuntu using IPv6

     * setup

.. _Hop_Limit_step17:

.. tab-set::

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