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1. Discover
2. Offer
3. Request
4. Acknoledgement
First system started and than we put system on automatic ip address , system goes to find DHCP than system get confirm have DHCP . Request again for Ip To DHCP than DHCp Offer Ip System Take Ip And Send ACk .
It is a four-step shortly reffered to as DORA steps that stand to Discover, Offer, Request, and Acknowledment.
First step:
DHCP client broadcasts DHCP Discover
second step:
DHCP Server Broadacsts DHCP Offer
third step:
DHCP Client broadcasts DHCP Request
fourth step:
DHCP Server Broadcasts DHCP ACK
Then Client get the IP from DHCP IP Pool
The process of obtaining IP address dynamically from DHCP server is called as Lease Generation Process:
first step:
DHCP client broadcasts DHCP Discover
second step:
DHCP Server Broadacsts DHCP Offer
third step:
DHCP Client broadcasts DHCP Request
fourth step:
DHCP Server Broadcasts DHCP ACK
All these messages are broadcast and used mac address to get to the right host
the default leased duration is 8 days and after 50% of the time DHPC cient sends DHCP Request"unicast" to renew the IP and should get DHCP Ack from DHCP server , if not the client will send DHCP request again after 87.5% if there is no DHCP Ack receieved from server and IP expires the client will start the lease generation process again
DHCP operations fall into four phases: server discovery, IP lease offer, IP lease request, and IP lease acknowledgement.
These stages are often abbreviated as DORA for discovery, offer, request, and acknowledgement
DORA stands for discover , offer , request and acknowledgementwhen we install a dhcp server into our network then dhcp server works on the basis of dora process first dhcp server sends a hello message in to the network to discover the clients pc and when any client pc found in the network then , dhcp server offers the IP to client pc. When client pc select any IP from dhcp server then client pc request for selected IP to dhcp server then dhcp server provide that IP to client pc and both send ackonledgement to each other.This process is called DORA process on the basis of this process DHCP server works to provide IP's dynamically to client pc's in network
The macine 's client asks the DNS server about DHCP server , DHCP pool assigned an IP to it.
The system is called as DORA.
DHCP is Dynamic host control protocol
DHCP is used to assign dynamic IP addresses to client computers in the network DHCP assign IP on first come first serve basis
DHCP goes throught DORA structure
Discovery
Offer
Request
Acknowledgement
DORA
