What is the DHCP role?

Answer Posted / kaustubh kumar

he Dynamic Host Configuration Protocol (DHCP) is an auto
configuration protocol used on IP networks. Computers that
are connected to IP networks must be configured before they
can communicate with other computers on the network. DHCP
allows a computer to be configured automatically,
eliminating the need for intervention by a network
administrator. It also provides a central database for
keeping track of computers that have been connected to the
network. This prevents two computers from accidentally being
configured with the same IP address.

In the absence of DHCP, hosts may be manually configured
with an IP address. Alternatively IPv6 hosts may use
stateless address autoconfiguration to generate an IP
address. IPv4 hosts may use link-local addressing to achieve
limited local connectivity.

In addition to IP addresses, DHCP also provides other
configuration information, particularly the IP addresses of
local caching DNS resolvers. Hosts that do not use DHCP for
address configuration may still use it to obtain other
configuration information.

There are two versions of DHCP, one for IPv4 and one for
IPv6. While both versions bear the same name and perform
much the same purpose, the details of the protocol for IPv4
and IPv6 are sufficiently different that they can be
considered separate protocols

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