Contributing

Is Slaac better than DHCPv6?

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Is Slaac better than DHCPv6?

If you do not have any requirement to restrict the hosts that can attach to the network using IPv6, then SLAAC, combined with DNS advertisement in the RA, and possibly with DDNS (if needed), would be the right choice. However, if the environment must be more secure, then DHCPv6 is likely to be the better solution.

What is the difference between Slaac and DHCPv6?

SLAAC automatically works with a router, while Stateless DHCPv6 gives addresses using SLAAC and extra information using DHCP. The only configuration where the server gives IPv6 addresses is the Stateful one.

How does IPv6 Slaac work?

How does SLAAC work?

  1. Step 1: The node configures itself with a link-local address.
  2. Step 2: The node performs Duplicate Address Detection (DAD)
  3. Step 3: The node sends a Router Solicitation message.
  4. Step 4: The node configures its global unicast address.
  5. Step 5: The node performs Duplicate Address Detection (DAD)

What is Slaac used for?

SLAAC is used to automatically assign an IPv6 address to a host, but there are a number of scenario where hosts may end up using stale configuration information and thereby leading to interoperability problems.

Is Slaac stateful or stateless?

stateless service
It is the ICMPv6 message type 134. As the name implies, SLAAC is a stateless service. It means there is no server that maintains the network address information. It also does not know which IPv6 addresses are being used and which ones are available.

Should I use DHCPv6?

DHCPv6 servers that assign randomized interface identifiers to end-node devices aid in the protection of the network from attacker reconnaissance attempts. Therefore, organizations should use DHCPv6 servers that are capable of providing randomized interface identifiers to lease requests.

Should you use DHCPv6?

How do I enable IPv6 Slaac?

Enable IPv6 SLAAC on Cisco Routers

  1. Step-1. Enable IPv6 Routing on R6.
  2. Step-2. Enable IPv6 and Add prefix on R6: interface Ethernet0/1. ip address 192.168.100.10 255.255.255.0.
  3. Step-3. Enable IPv6 Routing on R1. R1(config)#ipv6 unicast-routing.
  4. Step-4. Enable IPv6 and configure IPv6 auto-config R1: interface Ethernet0/0.

Does Slaac use EUI-64?

SLAAC is a method in which the host or router interface is assigned a 64-bit prefix, and then the last 64 bits of its address are derived by the host or router with help of EUI-64 process which is described in next few lines. SLAAC uses NDP protocol to work.

Are Slaac addresses static?

SLAAC Defined. Like IPv4, there are a number of different ways that a host can be addressed in IPv6; the two most common in IPv4 are static addressing and dynamic address configuration via the Dynamic Host Configuration Protocol (DHCP).

Does IPv6 use DHCP?

The Dynamic Host Configuration Protocol for IPv6 (DHCP) enables DHCP servers to pass configuration parameters such as IPv6 network addresses to IPv6 nodes. It offers the capability of automatic allocation of reusable network addresses and additional configuration flexibility.

Why is Slaac and stateless DHCPv6 stateless?

It is the ICMPv6 message type 134. As the name implies, SLAAC is a stateless service. It means there is no server that maintains the network address information. It also does not know which IPv6 addresses are being used and which ones are available.

What is SLAAC and DHCPv6?

Stateless Address Autoconfiguration ( SLAAC) is another way to assign addresses on an IPv6-enabled network. DHCPv6 is not just the familiar DHCP for IPv4 (DHCPv4) transliterated into IPv6 – and you need to understand the differences before planning for and deploying DHCPv6.

Why would a network administrator want to use DHCPv6?

Primarily because they want to control which devices can receive an IPv6 address, and hence communicate with other devices on the network. When using DHCPv6, just like DHCP with IPv4, the operator can set parameters around what kinds of devices, or perhaps even which specific devices, will be able to receive an IPv6 address.

What is the problem with DHCPv6?

In fact, DHCPv6, in some environments, at least, can be seen as an attack surface, or rather a hole through which attacks can potentially be driven. Second, stateful configuration also has a failover problem; if the DHCPv6 server fails, then hosts can no longer obtain an IPv6 address, and the network no longer works.

What is DHCPv6 and dynamic IPv6 addresses?

The fourth article, DHCPv6 and Dynamic IPv6 Addresses, describes the configuration of a Windows 2008 R2 (and later) dual-stack DHCP (DHCPv6 in addition to legacy DHCPv4) server and its clients while an (unrelated) article describes the configuration of a Windows 2012 (and later) dual-stack DHCP server.