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Brief Introduction to Neighbor Discovery Protocol for IPV6 on SonicWall

08/04/2021 0 People found this article helpful 189,270 Views

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    Description

    This article briefs about what is Neighbor Discovery Protocol and the mmessages and functions of IPv6 neighbor that are analogous to the traditional IPv4 neighbor messages. 

    Resolution

    The Neighbor Discovery Protocol (NDP) is a new messaging protocol that was created as part of IPv6 to perform a number of the tasks that ICMP and ARP accomplish in IPv4. Just like ARP, Neighbor Discovery builds a cache of dynamic entries, and the administrator can configure static Neighbor Discovery entries.

     Below Table shows the IPv6 neighbor messages and functions that are analogous to the traditional IPv4 neighbor messages.  

    IPv4/IPv6 neighbor messages and functions

    IPv4 Neighbor messageIPv6 Neighbor message
    ARP request messageNeighbor solicitation message
    ARP relay messageNeighbor advertisement message
    ARP cacheNeighbor cache
    Gratuitous ARPDuplicate address detection
    Router solicitation message (optional)Router solicitation (required)
    Router advertisement message (optional)Router advertisement (required)
    Redirect messageRedirect Message


    For Assistance on how to Configure static Neighbor Discovery Protocol, click here Configure-static-neighbor-discovery-protocol-entries-ipv6-only

    Under the NDP Settings, the maximum time to reach a neighbor is specified .  The minimum is 0 seconds, the maximum is 3600 seconds, and the default is 30 seconds.    

                 Image

    NDP Cache table displays all current IPv6 neighbors. 

               Image

    It is sometimes necessary to flush the NDP cache if the IP address has changed for a device on the network. As the IP address is linked to a physical address, the IP address can change, but still be associated with the physical address in the NDP Cache. Flushing the NDP Cache allows new information to be gathered and stored in the NDP Cache.


    Related Articles

    • Bandwidth usage and tracking in SonicWall
    • How to force an update of the Security Services Signatures from the Firewall GUI
    • Configure Guest VLAN in the TZ firewall, for guest users to access Internet only.

    Categories

    • Firewalls > TZ Series
    • Firewalls > SonicWall NSA Series

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