What is DHCPv6 stateless mode?
What is DHCPv6 stateless mode?
The stateless Dynamic Host Configuration Protocol for IPv6 (DHCPv6) feature allows DHCPv6 to be used for configuring a node with parameters that do not require a server to maintain any dynamic state for the node.
Should I use stateful or stateless DHCPv6?
The stateless approach is used when a site is not concerned with the exact addresses that hosts use. However, the addresses must be unique. The addresses must also be properly routable. The stateful approach is used when a site requires more precise control over exact address assignments.
What protocol does stateless DHCPv6 use?
Stateless Dynamic Host Configuration Protocol (DHCP)
A node that uses stateless DHCPv6 must have obtained its IPv6 addresses through some other mechanism usually SLAAC. It is defined in RFC 3736 “Stateless Dynamic Host Configuration Protocol (DHCP) Service for IPv6”.
What is the difference between stateful and stateless DHCPv6 configuration?
Stateful vs Stateless DHCPv6 In this context stateless means that no server keeps track of what addresses have been assigned by which hosts and what addresses are still available for an assignment. A stateful DHCPv6 server provides IPv6 addresses and “other information” to hosts.
What is the command to configure an interface for stateless DHCPv6?
The ipv6 dhcp server pool-name interface configuration mode command binds the DHCPv6 pool to the interface. The router responds to stateless DHCPv6 requests on this interface with the information contained in the pool. The O flag needs to be changed from 0 to 1 using the interface command ipv6 nd other-config-flag.
Should you 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 I use DHCPv6 or Slaac?
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.
How do I configure a router as a stateful DHCPv6 client?
Stateful DHCPv6 Server
- Enable IPv6 Routing. As shown in Figure 1, the ipv6 unicast-routing command is required to enable IPv6 routing.
- Interface Commands.
- Enable IPv6 Routing.
- Configure a DHCPv6 Pool.
- Configure Pool Parameters.
- Configure the DHCPv6 Interface.
Which of the following need to add when you are configuring the DHCPv6 stateful?
DHCPv6 Stateful Configuration On the interface you have to add the ipv6 dhcp server command and tell it what pool it has to use. The ipv6 nd managed-config-flag sets a flag in the router advertisement that tells the hosts that they could use DHCPv6.
What is stateless IPv6?
IPv6 defines mechanisms for both stateful address and stateless address autoconfiguration. Stateless autoconfiguration requires no manual configuration of hosts, minimal (if any) configuration of routers, and no additional servers. The stateless mechanism enables a host to generate its own addresses.
Does DHCPv6 provide default gateway?
DHCPv6 does not provide the address, subnet mask, and default gateway that DHCP for IPv4 does.
Why is Slaac and stateless DHCPv6 stateless?
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.
When should I use DHCPv6?
DHCPv6 provides more control to the administrator in assigning addresses. If you really want that sort of control over your IPv6 addresses, you don’t understand IPv6 yet. It also can be used to provide additional configuration parameters beyond the basic address/gateway supported through autoconfiguration.
What is stateless address configuration?
Stateless address autoconfiguration is the process that IPv6 nodes (hosts or routers) use to automatically configure IPv6 addresses for interfaces.
Are there any advantages in using stateless address autoconfiguration instead of DHCPv6?
Advantages of Stateless Auto Configuration Allows hot plugging of network devices – The network devices can be ‘hot-plugged’ to the Internet. Since the devices can configure their own IP addresses, there is no need for manual configuration of the network devices.
Is DHCPv6 needed?
1) For address provisioning DHCPv6 is no longer needed (hosts can do that on their own, via SLAAC), for the default gateway it can’t be used, and the vast majority of systems can get their DNS resolvers via RAs (option 25/RDNSS as of RFC 8106; see also Chris’ post when Windows 10 eventually had it).
Is DHCPv6 required?
DHCPv6 is not necessary for configuring hosts with the addresses of Domain Name System (DNS) servers, because they can be configured using Neighbor Discovery Protocol, which is also the mechanism for stateless autoconfiguration.
What is stateful vs stateless?
Stateful expects a response and if no answer is received, the request is resent. In stateless, the client sends a request to a server, which the server responds to based on the state of the request. This makes the design heavy and complex since data needs to be stored.
