Stateless Address Autoconfiguration (SLAAC)

Mobile SLAAC as described in the RFC 4862 provides a way of IPv6 device to obtain the IPv6 address without using the DHCP. This ability of Sol disrupts several administrations in a network and also improves scalability.

IPv6 Neighbor Discovery and Stateless Address Autoconfiguration

As the world shifts from IPv4 to IPv6, there is a need to discuss some mechanisms that support this paradigm shift. Neighbor Discovery (ND) and Stateless Address Autoconfiguration or also known as SLAAC are among the building blocks of IPv6. These protocols improve the operation and performance of IPv6 networks offering an easy way to connect networks together and offer IoT capabilities. In this article, the author aims to provide insight into the these two protocols, how they work, and their advantages in context to the IPv6 environment.

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IPv6 Neighbor Discovery Protocol(NDP)

IPv6 Neighbor Discovery Protocol is a protocol that operates in the internet layer of the OSI reference model. The IPv6 Neighbor Discovery Protocol which is specified in the RFC 4861, fumes IPv4 protocols like ARP, ICMP Router Discovery which is a function of ICMP, and Subnet Mask Request. NDP works through ICMPv6 messages to enable some critical operations in the network like address resolution, neighbor reachability, and network parameter discoveries among others. Here are the key components of NDP:...

Key Components of NDP

1. Router Solicitation (RS) and Router Advertisement (RA)...

Functions of NDP

Address Resolution: NDP employs NS and NA messages to associate an IPv6 address to the link layer address and thus replacing the ARP role of the IPv4 protocol....

Stateless Address Autoconfiguration (SLAAC)

Mobile SLAAC as described in the RFC 4862 provides a way of IPv6 device to obtain the IPv6 address without using the DHCP. This ability of Sol disrupts several administrations in a network and also improves scalability....

How SLAAC Works?

1. Link-Local Address Generation:...

Advantages in NDP and SLAAC

Simplified Network Configuration: They also noted that SLAAC enables devices to set themselves spontaneously while not requiring a user or a DHCP server....

Conclusion

IPv6 Neighbor Discovery and Stateless Address Autoconfiguration are two important elements of the IPv6 protocol stack solutions that are aimed to provide effective communication on the network and fundamental address configurations. NDP supersedes a myriad of IPv4 protocols with a set of functions tied in a neat package, while SLAAC enables an efficient means of automatic addressing and management. All these protocols help improve IPv6 network transports aspects such as scalability, security, and usability to enable future advancements in the Internet....

IPv6 Neighbor Discovery and Stateless Address Autoconfiguration – FAQs

In general, what is the main reason that NDP is used with IPv6?...