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What is the difference between DHCPv4 and DHCPv6?
DHCPv4 – The administrator enables DHCP for each interface. Administration is on a per-logical interface basis. DHCPv6 – Explicit configuration is not necessary. This protocol is enabled on a given physical interface.
Which is better 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.
Does IPv6 use DHCP?
At the same time that IPv6 was being developed by the Internet Engineering Task Force (IETF), DHCP was updated for IPv6 networks with a new protocol named DHCPv6. DHCP for IPV4 and DHCPv6 are two completely separate protocols, but they do share some characteristics.
Why is it beneficial to use stateless DHCPv6?
Stateless DHCPv6 enables a device that has obtained an IPv6 address/prefix to get other configuration parameters from a DHCPv6 server.
What is DHCP rapid commit?
In Rapid-Commit mode , the DHCP client obtain configuration parameters from the server through a rapid two message exchange (solicit and reply). So unlike the normal commit, the two-message exchange provides faster client configuration, and is beneficial in environments in which networks are under a heavy load.
What is DHCP process named as?
Dynamic Host Configuration Protocol (DHCP) is a client/server protocol that automatically provides an Internet Protocol (IP) host with its IP address and other related configuration information such as the subnet mask and default gateway.
Is Slaac stateful or stateless?
Here’s what to remember: 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.
Is DHCPv6 necessary?
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. DHCPv6 prefix delegation provides a mechanism for configuring such routers.
Why is DHCP stateful?
A stateful DHCPv6 server provides IPv6 addresses and “other information” to hosts. In IPv4 DHCP server typically provides default gateway addresses to hosts. In IPv6, only routers sending Router Advertisement messages can provide a default gateway address dynamically.
Should I use stateless or stateful IPv6?
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’s the difference between DHCPv6 and DHCP for IPv4?
DHCPv6 uses DHCP Unique Identifiers (DUIDs) (RFC 6355) whereas DHCP for IPv4 uses MAC addresses to identify the client. Their message type names are different, but perform many of the same functions (DHCP message types, DHCPv6 message types).
Which is the ISP side of the DHCPv6 server?
The customer premises edge (CPE) interface toward the provider edge (PE) can be a stateless or stateful DHCPv6 client. In either case, the ISP-side DHCPv6 server might provide configuration parameters such as Domain Name System (DNS) server addresses, domain names, and Simple Network Time Protocol (SNTP) servers to the DHCP client on the CPE.
How is the preference option used in DHCPv6?
The two DHCPv6 servers use the DHCPv6 server preference option to tell the end-nodes which of the two DHCPv6 servers they should use. End-nodes will always chose the DHCPv6 server with the highest preference. Therefore, any DHCPv6 lease will be given by the preferred server.
Why do I need to use DHCPv6 on my router?
Router advertisement (RA) messages sent from this interface inform clients that they should use DHCPv6 for “other” (for example, nonaddress) configuration information. The client has no obvious DHCPv6 configuration.