DHCP Flashcards
DHCP
dynamic host configuration protocol
what is it used for?
used to provide quick, automatic distribution of IP addresses. this means network administrators do not need to manually assign IP adresses to network devices.
advantages
you dont have to keep a record of the IP adresses assigned
automatically assigns new IP adresses if the client moves to a different subnet
IP adresses can be released if the computers offline and assined to a new device
automatically tracks the IP adress assignments so it is not possible to duplicate the adress
the DHCP server can detect unauthorised DHCP servers on the network
how does it work?
when a DHCP server recieves a request from a client it chooses an IP adress and other related information from a pool of adresses known as a scope and offers it to the client. if the client accepts the adress the IP adressing information is leased for a specific time. the client renews the adress assignment everytime it logs onto the network. once the lease has expired it is retured back to the pool for reassignment
are certain adresses excluded from distribution?
certain adresses are excluded because they have already been assigned as static adresses.