Why Ipv6 replaces ARP by using the ND protocol?

Q.  Why Ipv6 replaces ARP by using the ND protocol?
- Published on 19 Oct 15

a. The ARP address statically bound.
b. The security issues are apply.
c. Both a and b
d. The interface identifier portion of an Ipv6 address is directly derived from MAC address.

ANSWER: The interface identifier portion of an Ipv6 address is directly derived from MAC address.

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    Discussion

  • Prajakta Pandit   -Posted on 16 Oct 15
      - ND (Neighbour Discovery) is the protocol used by IPv6 to determine neighbouring hosts and will replace ARP which was used in IPv4.

      - ND perform similar tasks of the ARP (Address Resolution Protocol) and ICMP Router Discovery Protocol.

      - The purpose to replace the ARP is to get the MAC/Link Layer addresses of available hosts and the connection information of available routers in the network.

      - The interface identifier portion of an Ipv6 address is directly derived from MAC address.

      - ND operates in the link layer (Layer 2 of the OSI model) and uses IPv6 to discover neighbouring nodes.

      - NP provide the translation between the IPv6 address and the link layer address.

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